Microcomputer Motor Protection Relays and Monitoring Device

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otor-Protection-and-Monitoring-Device

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User’s manual of MMPR-610Hb

microcomputer motor protection and

monitoring device

Manufactured by ZuHai Wanlida Electric co Ltd, China.

Sole Distributor in India: EAGLE TECHNOLOGY

Prepared by：

Proofed by：

Approved by：

Document No.：WLD[K]-JY-222-2010 Version No.:V2.02.01

Date of publication: October 2010

Copyright: Zhuhai Wanlida Electric Co., Ltd.

Note: Our company reserves the right to modify this manual. For any inconsistency between

the product and this manual, please contact us for relevant services.

Technical support hotline: 0756-3395398 Fax: 0756-3395500

User’s manual of MMPR-610Hb microcomputer motor protection and monitoring device

WLD[K]-JY-222-2010

2

F o r e w o r d

1. Model description

The structural type of the MMPR-610Hb series protection is Hb. MMPR-610Hb

supports three-phase current protection, also supports two-phase current protection.

When ordering, please specify.

2. Standards referenced

General specification for static protection, security and automatic

equipment, DL 478-2001

Technical code for relaying protection and security automatic equipment

GB/T 14285-2006

Protective relay and automatic equipment design rules of power equipment

GB50062-92

3. Caution

Negative sequence voltage involved in this series of protection is combined with

phase voltage, all of low voltage component depend on line voltage in compound

voltage block, if one of the three line voltages is lower than low voltage setting, low

voltage component will operates and unblock over current protection.

There are 4 standard curves of inverse protection involved in this series of protection,

if the fault current is higher than 15 times of rated current, the inverse protection

component as if the current is 15 times of rated current.

The appearance should be inspected before power is applied, to ensure that the

panel is OK without scratch, the screws are tightened, the device is grounded firmly,

all screws of plug-ins are tightened and in good contact.

When power is applied, the “Run” indicator on the panel should flash, digital tube

displays primary measuring result in cycle, protection and measuring data are

displayed on the lcd in cycle.

The terminal D25～D28 are measuring circuit of 4～20mA DC signal, when testing,

signal should be supplied by special equipment, direct apply signal of relay protection

tester is prohibited(Can be selected or not).

When the device is equipped with ungrounded system, terminal D07，D08 are zero

sequence small current input terminal, the ac current input should be limited to within

2A, the measuring current input should be limited to 6A, pay attention to the signal

input when testing to avoid large signal applied so as to avoid damage to


WLD[K]-JY-222-2010

3

components.

Operating circuit inside the device is only applicable to DC power supply, if AC power

is used, it should be applied with rectifier and filter.

It is prohibited to plug or unplug the plug-ins, in order to avoid damage to the device.

It is prohibited to do digital output test when the device is running with primary

equipments.

1.．． Product description．．．．．．．．．．．．．．．．．．

1.1 Scope of application

The MMPR-610Hb microcomputer motor protection applies to the protection and

monitoring of medium and high-voltage motors with voltage ratings of 3kV~10kV. It can be

used for the integrated protection of large and medium motors of different capacities, and

also for the dual configuration of main protection and backup protection of ultra-large

motors.

1.2 Function and specification

1.2.1 Protective function

Prolonged start time protection(Start Time Over)

2-section definite time limit over-current protection（ instantaneous over-current

protection, locked rotor protection）(Overcurrent)

Negative sequence over-current protection(NS Overcurrent)

Zero sequence over-current protection(ZS Overcurrent)

Overload protection(Overload)

Overheat protection(Motor Over Heat)

Underload protection(Underload PROT)

voltage protection（Under-voltage protection, Over-voltage protection） (Voltage

PROT)

Non-electric quantity protection（2-way）(Non-electric) (Can be selected or not)

Logical control(Joint Trip PROT)

Out-of-step protection（Synchronous motor）(Out-Of-Step PROT)

Asynchronous impact protection（Synchronous motor）(Asynchro.Impact)

1.2.2 Auxiliary function

Under-frequency unloading (Under-frequency)

Soft start function(Soft Startup)

Motor’s normal-reverse function(Nor.Rev.Func.)

Harmonic spectrum analysis

Phase display

Integral energy and impulse energy(Pulse energy can be selected or not)

Self-checking fault alarm of device


WLD[K]-JY-222-2010

4

Remote calling and modification of protection’s settings

Fault recorder(Wave Record)

One or two ways programmable output of 4～20mA

Provide ethernet print function(manual print setting value, manual/auto print reports)

(Can be selected or not).

1.2.3 Monitoring function

Electric quantity（remote measuring quantity）：voltage, current, active power, reactive

power, active energy, reactive energy, power factor, grid frequency, non-electric

quantity measuring(Can be selected or not), etc.

Remote binary quantity: the device has 15-way binary input, in which: 12-way for

external gathering, and 3-way for internal gathering.

1.2.4 Communication capability

2 standard RS485 multipoint communication ports

2 industrial ethernet ports(Can be selected or not)

Supports single, dual network communication, it is fully qualified for network

redundancy and backup

IEC-60870-5-103 （ RS485 communication mode ） ,IEC-60870-5-104 （ industrial

ethernet mode）standard communication protocol(Can be selected or not).

1.2.5 GPS clock synchronization function(Can be selected or not)

The device is able to receive GPS clock minute synchronization (or second

synchronization) through RS485 differentiate voltage, and it can be done with

monitoring system to accomplish GPS precise clock synchronization.

1.2.6 Device specifications

32-bit DSP microprocessor

Real-time multi-task operating system and C++ program techniques, realizing online

programming

Double-screen display (LCD Chinese display and nixie tube display), easy for

inspection

One or two ways 4~20mA DC quantity output, which can be set flexibly as any

corresponding electric quantity (such as current, voltage, power, frequency, etc.)

Collecting 4 ways of 4~20mA DC quantities for measurement of non-electric

quantities, such as temperature, pressure, and realizing online monitoring(Can be

selected or not)

Having the electric energy quality analysis function and perfect harmonic analysis

function

Integrating perfect metering functions

Excellent hardware interchangeability, easy user maintenance and reduced quantity

of spare parts

Protection output relays can be configured flexibly for user convenience

With remote/local changeover switch and trip/closing buttons, reducing the number of

elements on the board/cabinet panel and simplifying wiring


WLD[K]-JY-222-2010

5

Using a 6U, 19/3” standard enclosure in a rear plug-in structure; the device can be

installed in site on a switchboard or combined in a centralized manner

1.2.7 Main technical specifications

Rated data

Power supply: DC/AC 86～265V

Operating voltage: DC 220V or DC 110V

AC voltage: 1 0 0 / 3V or 100V

AC current: 5A or 1A

Frequency: 50Hz

Power consumption

DC circuit: ＜10W（normal operation）；＜15W（protection operation）.

AC voltage circuit:＜0.5VA/ phase

AC current circuit:＜1VA/ phase（In=5A）；＜0.5VA/ phase（In=1A）.

Overload capability

AC voltage circuit: 1.2Un, continuous operation

Current measuring circuit: 1.2Un, continuous operation

Protective current circuit: 2In, continuous operation

10In, allowing 10s

40In, allowing 1s

Range and error of setting value

Maximum range of setting value:

Voltage element: 1V~120V

Current element: 0.1In~20In

Frequency: 45.00Hz~55.00Hz

Timing element: 0.00S~100.00s

Error of setting value:

Current and voltage setting value: ≤±3% of setting value

Frequency setting value: ≤±0.02Hz

Slip setting value: ≤±5% of setting value

Angle setting value: ≤±2°

Whole-group operation time (including relay’s intrinsic time):

Intrinsic operating time of current instantaneous over-current protection:

not greater than 40ms at 1.5 times the setting value

Intrinsic operating time of Difference instantaneous over-current

protection: not greater than 30ms at 2 times the setting value

Measuring accuracy

AC current: Class 0.2

AC voltage: Class 0.2

4~20mA DC quantity input: ≤±1%


WLD[K]-JY-222-2010

6

Power: Class 0.5

Integral energy: Class 1 (active), Class 2 (reactive)

Frequency: ≤±0.02Hz

SOE resolution: ≤2ms

Impulse width of impulse quantity: ≥10ms

4~20mA DC quantity output: ≤±1%

Capacity of trip/closing output contact

Can be connected to DC 250V, 8A for prolonged periods.

GPS clock synchronization error

clock synchronization error≤2ms

Environmental conditions

Ambient temperature:

Operating：-20℃～+55℃。

Storage：-25℃～+70℃, rainproof and snow-proof rooms with relative humidity not

greater than 80%, ambient air free of acid, alkaline or other corrosive and explosive gas;

no excitation quality is applied at the limits, the device shall not have any irreversible

change; after temperature restoration, the device shall operate properly.

Relative humidity: The average relative humidity of the most humid month shall not

be greater than 90%, the average minimum temperature of this month not lower than 25℃

and there shall be no surface condensation; at the highest temperature of +40℃, the

average maximum humidity shall not exceed 50%.

Atmospheric pressure: 80kPa~110kPa (below relative altitude of 2wc)

1.2.8 Hardware structure

The device uses a 6U, 19/3” standard enclosure, with aluminum alloy casing and

installed by overall embedding. The display panel is mounted in the front, and the other

plug-in modules are rear mounted. From the rear view, the power, I/O, CPU and AC

plug-in modules are from the left to the right.

External dimensions and boring diagram


WLD[K]-JY-222-2010

7

Structural and dimensional diagram Boring diagram for installation

Devices fabricated on-screen steps: first release on-screen stents unfastening

screws, remove the stents; installed the device on the screen from the front and push until

close to the fixed plate; install the stent 2, and then stent 1, and then use fastening screw

to insertion hole from rear of stent1, and then screwed into stent 2 and tighten screw; the

stents from up and down are installed in the same way; use grounding screws to connect

grounding line.


WLD[K]-JY-222-2010

8

2.．． Function of device．．．．．．．．．．．．．．．．

2.1 Prolonged start time protection(Start Time Over)

When the maximum phase current of the motor rises from zero to above 10% of Ie (Ie is

the motor’s rated current, the same below), the device begins to time, until the current drops to

120% of Ie, this time is known as the motor’s start time (as Tstart). When the start time Tstart

exceeds setting value of the motor’s start time, the protection will operate on the trip. After the

end of starting, the motor’s prolonged start time protection will be switched off. During the

motor’s starting process, the mark “motor starting” is displayed in the lowest line on the LCD.

The value of current Ia can be seen in the report during 30s of motor’s starting.

The motor starting process is shown in Figure 2-1

Figure 2-1 Schematic diagram of motor starting process

2.2 2-section definite time limit over-current protection(Overcurrent)

The device has 2-section definite time limit over-current protection, instantaneous

over-current protection and locked rotor protection, switched On/Off by control word separately,

used to protect the motor from inter-phase short-circuit.

Instantaneous over-current protection is provided. The instantaneous over-current

protection Section I setting value 1 is input; after the end of starting, the instantaneous

over-current protection Section I setting value 2 is input. Thus, mis-operation due to excessive

starting current during the starting process can be avoided effectively and guarantee a high

level of sensitivity during the protection operation.

The locked rotor protection will be switched off automatically during the motor’s starting

process.

The operation logic diagram of the instantaneous over-current protection is shown in

Figure 2-2. The operation logic diagram of the locked rotor is the same as instantaneous

over-current protection.

120%Ie

10%

Tstart

120%Ie

10%

Tstart


WLD[K]-JY-222-2010

9

Figure 2-2 Operation logic diagram of instantaneous over-current protection

2.3 Negative sequence over-current protection(NS Overcurrent)

Where there is great asymmetry in the 3 phase currents of the motor, there will be a high

negative sequence current, which will produce a current of double the line frequency in the

rotor, so that the rotor’s additional heat increases dramatically, endangering the safe operation

of the motor.

The device has negative sequence definite time limit over-current protection and negative

sequence inverse time limit over-current protection, providing protection to abnormal

conditions, such as opposite phase, loss-of-phase, inter-turn short-circuit and serious voltage

asymmetry, etc.

The operation logic diagram of the negative sequence definite time limit over-current

protection is shown in Figure 2-3.

Figure 2-3 Operation logic diagram of negative sequence definite time limit over-current

protection

To avoid any protection mis-operation arising from the asynchronism of the 3 phases

upon closing of the circuit breaker, the set delay should not be less than 0.2s.

As stipulated by the IEC (IEC255-4), the following 4 standard characteristic equations of

the inverse time limit component are usually used:

General inverse time limit: （1）

Unusual inverse time limit: （2）

Extreme inverse time limit: （3）

Long inverse time limit: （4）

Where: Ip is the setting value of the negative sequence inverse time limit over-current

starting current; τp is the negative sequence inverse time limit over-current time constant,

Instantaneous

protection on/off

Negative sequence

over-current on/off I2>negative sequence

settings Protection output

sequence T

p

pIIt

1)/(

802

p

pIIt

1)/(

120

p

pIIt

1)/(

5.13

p

pIIt

1)/(

14.002.0

Ia≥Instantaneous

settings Ib≥Instantaneous

settings Ic≥Instantaneous

settings

Protection output

sequence T

≥


WLD[K]-JY-222-2010

10

within the range of 0~1s; the inverse time limit characteristic can be selected by the setting

value of the negative sequence inverse time limit over-current curve (1: general inverse time

limit; 2: unusual inverse time limit; 3: extreme inverse time limit; 4: long inverse time limit).

2.4 Zero sequence over-current protection(ZS Overcurrent)

The device has the zero sequence over-current protection function, selecting trip or alarm

by control word. The zero sequence current I0 is from the special zero sequence transformer.

For ungrounded system, if the grounding fault occurs in the system, the zero sequence current

at grounding fault point is almost capacitance current, which scope value is very low. The

selectivity is hardly guaranteed that using zero sequence over-current relay to protect from

grounding fault. The device uploads scope value and direction of zero-sequence current by

communication and low current grounding line selection is carried on by position machine.

The operation logic diagram of the zero sequence over-current protection is shown in

Figure 2-4.

Note: When the zero sequence over-current trip is switched on, the zero sequence

over-current alarm will be switched off automatically.

Figure 2-4 Operation logic diagram of zero sequence over-current protection

2.5 Overload protection(Overload)

The device has the overload protection function, selecting trip or alarm by control word.

Overload protection is blocked during motor’s starting process. The operation logic diagram of

the overload protection is shown in Figure 2-5.

Note: When the overload trip is switched on, the overload alarm is switched off

automatically.

Figure 2-5 Operation logic diagram of overload protection

2.6 Overheat protection(Motor Over Heat)

Overheat is an important cause of motor damage, especially rotor overheat due to

negative sequence current. According to the ANSI/UL 2111-2002 Safety standard for motor

Zero-sequence

over-current on/off I0>zero-sequence

settings

Protection output

sequence

T

≥

Ia1>overload settings

Ib1>overload settings

Ic1>overload settings&

After motor’s start

Overload

protection on/off

TProtection output

sequence


WLD[K]-JY-222-2010

11

overheat protection, the judgment criterion of overheat protection operation is:

Where: t —— operating time of protection (s);

τ1—motor’s overheat time constant (s), corresponding to motor’s overload

capability;

I1—positive sequence component of motor’s actual operating current (A);

I2—negative sequence component of motor’s actual operating current (A);

Ie—overheat protection starting current setting value (value of motor’s actual

operating rated current reflected to the CT secondary side);

K1—motor’s positive sequence heating factor. During the starting process, it

can be set within 0~1 with a frequency of 0.01 to evade starting. After the

end of starting, it will turn to 1 automatically;

K2—motor’s negative sequence heating factor; it can be set within 0~10 with a

frequency of 0.01, usually being 6.

The overheat protection has overheat alarm and overheat trip, and has separate control

words for switching On/Off.

The overheat alarm is an anticipating signal that can be set within 30%~100% of the trip

value with a frequency of 1%. When the motor trips due to overheat, the device’s output relay

will remain at the closed state, and the device will radiate heat at the set radiating time

constant until the motor reaches 40% of the trip value, then the output relay will return,

allowing the motor to restart. When emergency starting is required, press the “Reset” key of

the device or enter the [Signal Reset] menu for reset, so that the output relay returns.

2.7 Underload protection(Underload PROT)

The device has underload protection function, selecting trip or alarm by control word.

Underload protection is blocked during the motor’s start process. The operation logic diagram

of the underload protection is shown in Figure 2-6.

Note: When the underload trip is switched on, the underload alarm is switched off

automatically.

Figure 2-6 Operation logic diagram of underload protection

2.8 Voltage protection(Voltage PROT)

2.8.1 Under-voltage protection(Undervoltage PRO)

The device compares the maximum line voltage value. If it is less than the setting

22

22

2

e11

1

05.1)/()/(

eIIKIIKt

Circuit breaker at closed position

Ia≤Underload settings

Ib≤Underload settings

Ic≤Underload settings

&

&

Underload

on/off

Protection

output

sequence

T

Motor’s start over


WLD[K]-JY-222-2010

12

value and reaches the setting delay, the protection operates on the trip. The protection is

via switch position block and PT failure block. The operation logic diagram of protection

is shown in Figure 2-7.

Figure 2-7 Operation logic diagram of under-voltage protection

To avoid any potential protection mis-operation arising from closing of the circuit breaker,

the set delay should not be less than 0.2s.

2.8.2 Over-voltage protection(Overvoltage PROT)

When any line voltage of the bus is greater than the over-voltage protection setting value,

the setting delay is reached; the over-voltage protection will operate on trip. The protection is

blocked at switch position. The operation logic diagram of the over-voltage protection is shown

in Figure 2-8.

Figure 2-8 Operation logic diagram of over-voltage protection

2.9 Logical control protection(Joint Trip PROT)

The device has the 4-way logical control protection function, switched On/Off by control

word. When a control word exits, the corresponding input quantity may be used as an ordinary

input.

2.10 Non-electric quantity protection(Non-electric) (Can be selected or not)

The device has the 2-way non-electric quantity protection function, switched On/Off by

control word, operating on the trip.

2.11 PT failure alarm(PT Failure Alarm)

The judgment criterion of PT failure depends on the wiring mode. When the PT failure

block function is switched on, if PT failure occurs, the under-voltage protection, compound

voltage component and current directional component will be blocked. The judgment criterion

of PT failure is as follows:

V-V wiring mode

The current value of the phase with the maximum current is less than the maximum load

&

Circuit breaker at closed position

Umax<Uddy

PT failure PT failure block &

Under-voltage

protection on/off Protection output

sequence

T

&

Circuit breaker at

closed position

Umax〉Ugdy

Over-voltage on/off/ Protection output

sequenceT


WLD[K]-JY-222-2010

13

current value (using the setting value of the overload current).

① Maximum phase-phase voltage < 30V, and current of any phase > 0.1Ie;

② Negative sequence voltage > 8V

If any of the above conditions is met, the delay (settable) will report PT failure, and will

return when failure disappears.

Y-Y wiring mode

The current value of the phase with the maximum current is less than the maximum load

current (using the setting value of the overload current).

① When |Ua+Ub+Uc| >7V, and the modulus difference between the maximum and minimum

line voltage is greater than 18V, it is thought that one or two phases have PT failure;

② When |Ua+Ub+Uc| > 7V, and the minimum line voltage is less than 18V, used to detect 2-phase

failure.

③ When MAX{Uab, Ubc, Uca}<7V, and the current of any phase > 0.1Ie, it is regarded as PT

3-phase failure.

If any of the above conditions is met, the delay (settable) will report PT failure, and will

return when failure disappears.

Figure 2-9 Operation logic diagram of PT failure

2.12 CT failure alarm(CT Failure Alarm)

When the CT failure block function is switched on, if CT failure occurs, the device sends

alarm signal.

When the current value of any phase exceeds the setting value of the overload protection

current, CT failure detection will be disabled.

Protection CT 3-phase wiring

During normal operation, the sum of the 3 phase currents at any side is zero (less than

PT failure operation

information

&

TPT

PT failure on/off

|MaxU-MinU|>18V

&MinU<18V

&

MaxU<7V MaxU=Max(Uab,Ubc,Uca)MinU=Min(Uab,Ubc,Uca)

&

MaxU<30V

U2>8V

≥

&V-V wiring

Max{Ia,Ib,Ic}>0.1*Ie

≥

Max{Ia，Ib，Ic}<Igfh

&

≥

&

Max{Ia,Ib,Ic}>0.1*Ie

7V|cUbUaU|

7V|cUbUaU|

PT

failu

re c

om

po

nen

t


WLD[K]-JY-222-2010

14

0.1Ie). In case of CT failure in any phase, the sum of the 3 phase currents is not zero (greater

than 0.1Ie). To differentiate from ground fault, the following judgment is required:

①In the 3 phase currents, the current value of the phase with the minimum current is zero (less

than 0.1Ie).

②The value of the phase with the maximum current is not zero (greater than 0.1Ie), and its

current value is less than the setting value of the overload current.

Protection CT 2-phase wiring

The current of one phase is greater than 0.15Ie and less than the setting value of overload

current , and current of another phase is less than 0.08 Ie, then, it is judged as CT failure.

2.13 Under-frequency unloading protection(Under-frequency)

The frequency is derived from software calculation. Using the frequency of Uab, the

under-frequency unloading protection is blocked by under-voltage block, under-current

block or slip block, in which slip block can be switched On/Off. The operation logic of

under-frequency unloading is shown in Figure 2-10.

Figure 2-10 Operation logic of under-frequency unloading

2.14 Synchronous motor protection(Synchrodyne)

Out-of-step protection(Out-Of-Step PROT)

The synchronous motor is one running at a certain speed determined by its number of

poles and AC frequency. This speed is known as the synchronous speed, which is determined

by the grid frequency and number of pole pairs:

Namely, m i n )/(60

rP

fn

f-grid frequency; P-number of pole pairs

The synchronous motor’s key function is conversion between mechanical energy and

constant frequency AC power.

Characteristics of synchronous motor: The speed does not vary with the load and voltage,

and is related to the frequency only, featuring high stability. When the motor speed cannot

reach the synchronous speed determined by the system frequency due to excessive external

load or reduced load-carrying capacity arising from the motor’s internal fault, the synchronous

motor is “out of step”.

The judgment criterion of the synchronous motor out-of-step protection is the protection


WLD[K]-JY-222-2010

15

IDZ

t

current relative to the setting value IDZ.

When the circuit breaker is closed, out-of-step occurs and the out-of-step protection

setting delay is reached, the out-of-step operation will operate on the trip. In case of the current

disappears, the out-of-step protection will return.

Figure 2-11 Schematic diagram of out-of-step oscillating current

Asynchronous impact protection(Asynchro.Impact)

The asynchronous impact protection of this device is based on the reverse power

protection principle. When the reverse power is greater than the setting value of asynchronous

impact protection and the setting delay is reached, the asynchronous impact protection will

operate. The operation logic diagram of the asynchronous impact protection is shown in Figure

2-12. The reverse power (Pn) is calculated from the protection current and voltage.

Figure 2-12 Operation logic diagram of asynchronous impact protection

Note: synchronous motor loss-of-excitation protection

This device realizes the synchronous motor’s loss-of-excitation protection via the contact

by which the logical control protection is connected to the loss-of-excitation relay.

2.15 Normal-reverse function of motor(Nor.Rev.Func.)

For the positive or negative rotate motor, the protection device provides positive and

negative rotate function.

After the normal-reverse function switched on, the device judges motor’s

normal-reverse on binary input. Select phase changing mode of current according to

on-the-spot phase changing. The device can automatically adjust the calculation of

Asynchronous impact On/Off Reverse power >asynchronous

impact setting value

Protection output

sequence

T


WLD[K]-JY-222-2010

16

negative sequence current and power to adapt the motor’s normal-reverse.（Note: When

the motor is at phase changing state, the motor should be off. It is regarded as the motor

stops when MAX{IA、IB、IC}<0.1Ie, it can change phases, otherwise it will be regarded as

the last state by default.

2.16 Soft starting function(Soft Startup)

The device has soft starting function, which is suitable for the self-starting control of

large-scale asynchronous motor.

Figure 2-13 Operation logic diagram of soft starting

2.17 Start current effective value record(MotorStart Value)

During motor’s start process, record the effective value of protection current Ia1 for

reference of analysis of motor’s start process. The device records 150 effective values of

protection current Ia1, which is at intervals to record for 200ms. It can be looked up in the

report menu.

2.18 Impulse energy/integral energy

Impulse energy(Can be selected or not)

The impulse circuit of the device uses an internal power supply; passive energy impulses

are input from the outside; and accumulation of impulse energy is finished by the software.

Integral energy

The software accumulates active and reactive powers into active and reactive energy in

real time.

Former current >

Irqdset

Current < Irqdset

Circuit breaker

closure

QF2 open

Start time

Pattern 1

&

&

Former current >

Irqdset

Current < Irqdset

Start time

≥

&

Pattern 2

&

&

&

Send command of

closing B29-B30

outputs，return

after 500ms, check

QF2 position after

3s.

QF2

failure,

QF trip

QF2 closure

r e t u r n

successfully

Soft start on/off


WLD[K]-JY-222-2010

17

2.19 Fault recorder(Wave Record)

See the communication coding table for the protection voltage and current waveform data

collected by the recording unit.

3.．． Setting of parameters and setting values of the device

3.1 System parameters

Parameter Range Description

Settings of setting value zone number

Setting value zone

number(Setting Zone

No.)

0-7 Set step:1（factory default 0）

Communication settings

RS485

address(RS485

Address)


RS485 baud

rate(RS485 Baudrate) 0-5

Set step:1（factory default 1）

0：2.4KB；1：4.8KB；2：9.6KB；3：19.2KB；4：

38.4KB；5：115.2KB；

Pulse confirmation

time(Pulse Input Time) 1-1000ms Set step:1（factory default 1）

IP address(IP Address) It has four

sections. The

range of

every section

is

0-255

One section set step:1（factory default

192.168.6.117）

Subnet mask (Subnet

Mask)

One section set step:1（factory default

255.255.255.0）

KW default value(KW

Default) One section set step:1（factory default 8.168.6.1）

Setting of basic parameters(B.Parameters)

Secondary value of rated

current (In) ( Rating

Current)

0-1 Set step:1（factory default 0）00：5A；01：1A

PT transformation ratio(PT Ratio)


CT transformation ratio(CT Ratio)


CT wiring mode(CT Wiring Mode)

0-1 Set step:1（factory default 0）00：3-phase;01：

2-phase

PT wiring mode(PT Wiring Mode)

0-1 Set step:1（factory default 0）00：Y-Y；01：V-V

Selection of harmonic

monitoring 0-12

For harmonic calculation, select the corresponding

reference quantity:


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channel(Harmonic

Channel)

0：exit from harmonic calculation function

1:Ia,2:Ib,3:Ic,4:I0,5:IA,6:IB,7:IC,8:Ua,

9:Ub,10:Uc,11:U0

Fault recorder(Wave

Record) 1/0 1/0：On/Off (factory default Off)

Neutral point

grounding mode（Earth

Mode）

0-1

00：Ungrounded

01：Major grounding

（It is provided in the unground method if there is no

special instruction.）

Out-of-step

cycle(Out-Of-Step CY) 0.50-100.00s Set step:0.01s（factory default 10s）

FC block delay(FC Block

Delay) 0-5000ms Set step:1 ms (factory default 200ms)

D/A channel setting(D/A Setting)

DA1～2 channel

selection 0-14

Select DA1~2 to output corresponding reference quantities:

0:No D/A output

1:IA,2:IB,3:IC ,4:Ua,5:Ub,6:Uc,7:Uab,8:Ubc,

9:Uca,10:P,11:Q

Voltage reference quantity:0—120V responding to

4mA—20mA.

Rating 5A：

Current reference quantity: 0—6A responding to 4mA—20mA，

Power reference quantity:0—1000W responding to

4mA—20mA.

Rating 1A：

Current reference quantity: 0—1.2A responding to

4mA—20mA，

Power reference quantity:0—200W responding to

4mA—20mA.

DA1～2 adjustment

factor 0.5-1.5 Adjust D/A channel 1～2（4-20mA）parameters

Pulse energy setting

Pulse 1 0-4294967295 Set step: 1

Press “confirm” for reservation, and revert to last

menu.

Pulse 2 0-4294967295

Pulse 3 0-4294967295

Pulse 4 0-4294967295

Positive active energy 0-4294967.29

5kWh

Set step:0.001

Press “confirm” for reservation, and revert to last


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Positive reactive

energy

0-4294967.29

5kvh

menu.

Negative active

energy

0-4294967.29

5kWh

Negative reactive

energy

0-4294967.29

5 kvh

Opening Count Clearing (Trip Times Clear)

Press “confirm” for reservation, and revert to last menu.

Channel factor setting(Channel Coef.)

Channel data 1～12 0.5-5

Set step:0.001（factory default 1）

Channel data 1-12 are corresponded to the

channel factor of analog quantity 1-12.

Channel data 13～14 0.5-5

Set step:0.001（factory default 1）

Channel data 13,14 are corresponded to channel

factor of DC quantity 1,2.

3.2 Setting value list


Pro

tectio

n O

n/O

ff w

ord

Prolonged start

time(Start Time

Over)

1/0 1/0: On/Off (factory default Off)

Instantaneous

over-current

protection(Inst.PRO

T)


Locked rotor

protection(Locked-r

otor)


Negative sequence

definite time

over-current(NS

OC DT)


Negative sequence

inverse time

over-current(NS

OC IT)



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Zero sequence

over-current

alarm(ZS OC

Alarm)


Zero sequence

over-current trip(ZS

OC Trip)


Overload

alarm(Overload

Alarm)


Overload

trip(Overload Trip) 1/0 1/0: On/Off (factory default Off)

Motor overheat

alarm(Motor OH

Alarm)


Motor overheat

trip(Motor OH Trip) 1/0 1/0: On/Off (factory default Off)

Underload

alarm(Underload

Alarm)


Underload

trip(Underload Trip) 1/0 1/0: On/Off (factory default Off)

Under voltage

protection(Undervol

tage PRO)


Over voltage

protection(Overvolt

age PROT)


Logic control 1

protection(Joint Trip

1)


Logic control 2


2)



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Logic control 3


3)


Logic control 4


4)


Non-electric

quantity 1

protection(Non-elec

tric 1)


Non-electric

quantity 2

protection(Non-elec

tric 2)


PT failure alarm(PT

Failure Alarm) 1/0 1/0: On/Off (factory default Off)

PT failure block(PT

Failure Lock) 1/0 1/0: On/Off (factory default Off)

CT failure alarm(CT

Failure Alarm) 1/0 1/0: On/Off (factory default Off)

FC block alarm(FC

Lock Alarm) 1/0 1/0: On/Off (factory default Off)

Out-of-step

protection(Out-Of-S

tep PROT)


Asynchronous

impact

protection(Asynchr

o.Impact)


Under-frequency

unloading

protection(Under-fr

equency)


Slip block(Slip

Lock) 1/0 1/0: On/Off (factory default Off)


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Soft start(Soft

Startup) 1/0 1/0: On/Off (factory default Off)

Normal-reverse

function

(Nor.Rev.Func.)


Prolonged start time protection of motor(Start Time Over)

Motor rated current(Ie)

(Rated Current) （0.1－1.2）In Set step:0.01A(factory default 1.0In)

Motor start time(Startup

Time) 0.0-1000.0s Set step:0.1s(factory default 100s)

Motor’s over-current protection(Overcurrent)

Current of instantaneous

over-current 1

（instantaneous

over-current at start）

(Inst.PROT 1)

（0.1-20）In Set step:0.01A(factory default 20In)

Current of instantaneous

over-current 2

（instantaneous

over-current after start）

(Inst.PROT 2)


Instantaneous

over-current

delay(Inst.Time)

0.00-100.00s Set step:0.01s(factory default 100s)

Current of locked rotor

protection(Locked-rotor C) （0.1-20）In Set step:0.01A(factory default 20In)

Locked rotor protection

delay(Locked-rotor T) 0.00-100.00s Set step:0.01s(factory default 100s)

Negative sequence over-current protection(NS Overcurrent)

Negative sequence definite

time limit over-current(NS

DT Current)


Negative sequence definite

time limit delay(NS DT

Time)



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Negative sequence inverse

time limit curve(NS IT

Curve)

1-4 Set step:1(factory default 1)

Negative sequence inverse

time limit constant(NS IT

Constant)

0.00-1.00s Set step:0.01s (factory default 1s)

Inverse time limit starting

current(NS IT Start C) （0.1-2）In Set step:0.01A(factory default 1In)

Zero sequence over-current protection(ZS Overcurrent)

Current of zero sequence

over-current(ZS OC Value) 0.00-2.00A Set step:0.01A(factory default 2A)

Zero sequence over-current

delay(ZS OC Time) 0.00-100.00s Set step:0.01s(factory default 100s)

Overload protection(Overload)

Overload current(Overload

Current) （0.1-20）In Set step:0.01A(factory default 20In)

Overload delay(Overload

Time) 0.00-100.00s Set step:0.01s(factory default 100s)

Overheat protection(Motor Over Heat)

Heating time

constant(Heating T) 1.0-1000.0s Set step:0.1s(factory default 100s)

Radiating time

constant(Diffusion T) 0.10-10.00 Set step:0.01(factory default 10)

K1 0-1 Set step:0.01(factory default 1)

K2 0-10 Set step:0.01s(factory default 6)

Overheat alarm

coefficient(Alarm Coeff.) 50.00-100.00% Set step:0.01%( factory default 80%)

Underload protection(Underload PROT)

Underload

current(Underload C) （0．1－2）In Set step:0.01A(factory default 0.1In)

Underload

delay(Underload Time) 0.50-100.00s Set step:0.01s(factory default 100s)

Voltage protection(Voltage PROT)

Under-voltage setting

value(Undervolt. Value) 1.00-100.00V

Set step:0.01V(factory default 90V)

Note: set by inter-phase voltage

Under-voltage 0.20-100.00s Set step:0.01s(factory default 100s)


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24


delay(Undervolt. Time)

Over-voltage setting

value(Overvolt. Value) 100.00-120.00V

Set step:0.01V(factory default 120V)

Note: set by inter-phase voltage

Over-voltage

delay(Overvolt. Time) 0.00-100.00s Set step:0.01s(factory default 100s)

Logical control protection(Joint Trip PROT)

Logical control 1

delay(JointTrip 1 Time) 0.00-100.00s Set step:0.01s(factory default 0s)

Logical control 2


Logical control 3


Logical control 4


Non-electric quantity protection(Non-electric)

Non-electric quantity 1 setting value (Non-elec.1

Value)

4.00-20.00mA Set step:0.01mA(factory default 20mA)

Non-electric quantity 1 delay(Non-elec.1 Time)


Non-electric quantity 2 setting value(Non-elec.2

Value)

4.00-20.00mA Set step:0.01mA(factory default 20mA)

Non-electric quantity 2 delay(Non-elec.2 Time)


Failure and FC block(PT/CT&FC Lock)

PT failure delay(PT Failure Time)


CT failure delay(CT Failure Time)


FC breaking current(FC Current)


Synchronizer protection(Synchrodyne)

Out-of-step protection

current(Out-Of-Step C) （0.1-20）In Set step:0.01A(factory default 20In)

Out-of-step protection

delay(Out-Of-Step Time) 1.00-100.00s Set step:0.01s(factory default 100s)

Setting value of

asynchronous

impact(Asynchr.Impact)

1.0～1000.0W Set step:0.1W(factory default 1000W)

Asynchronous impact

delay(Asynchr.Imp.Time) 0.00-100.00s Set step:0.01s(factory default 100s)

Under-frequency unloading(Under-frequency)

Under-frequency 45.00-50.00Hz Set step:0.01Hz(factory default 48Hz)


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unloading setting

value(Under-freq.Value)

Under-frequency

unloading delay setting

value (Under-freq.Time)


Under-frequency

unloading low current

block setting value(Low

Current Lock)

0.2-5A Set step:0.01A(factory default In)

Under-frequency

unloading under-voltage

block setting value

(Undervolt. Lock)

60.00-90.00V Set step:0.01V(factory default 90V)

Under-frequency

unloading slip block

setting value (df/dt Lock)

0.5-8.00Hz/s Set step:0.01Hz/s(factory default 1Hz/s)

Soft starting function(Soft Startup)

Soft start

current(Starting Current) 0.5-20A Set step:0.01A(factory default 20A)

Soft start

method(Starting Mode) 1-2 Select method 1 or 2

Motor’s normal-reverse function( Nor.Rev.Func.)

Current commutating

method (Commutation

Mode)

（1-3）

1：AB commutating；2：BC commutating；3：

CA commutating

Set step:1(factory default 1)


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4.．． Description of binary input, output and analog quantity．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．． 4.1 Monitoring of analog quantities

Analog quantities can be monitored under the [Protection Data Display], [Measured Data

Display] and [Impulse Energy] menus in the [State Display] menu, press the ““, ““ keys to

flip over. The factory precision of the device has been calibrated. The protection current is

calibrated at double the rated current and the measuring current at a single rated current. The

list is as follows:

Note: for protection CT 3-phase, PT Y-Y wiring; due to the under-frequency unloading

protection of this device, the frequency display is put in the protection data.

Analog quantity

terminal Analog quantity name Test method

Terminals D01,D02 Protective Phase A

current (Ia)

Add double the rating, displayed deviation

not exceeding 1%

Terminals D03,D04 Protective Phase B

current (Ib)


not exceeding 1%

Terminals D05,D06 Protective Phase C

current (Ic)


not exceeding 1%

Terminals D07,D08 Zero sequence current

at high voltage side (I0)

Add 1A, displayed deviation not exceeding

0.2%

Terminals D09,D10 Measured Phase A

current (IA)

Add a single rating, displayed deviation not

exceeding 0.2%

Terminals D11,D12 Measured Phase B

current (IB)


exceeding 0.2%

Terminals D13,D14 Measured Phase C

current (IC)


exceeding 0.2%

Terminals D15,D16 Phase A voltage (Ua) Add 50V, displayed deviation not exceeding

0.5%

Terminals D15,D16 System frequency F Add 50V 50Hz, displayed deviation not

exceeding ±0.02Hz

Terminals D17,D18 Phase B voltage (Ub) Add 50V, displayed deviation not exceeding

0.5%

Terminals D19,D20 Phase C voltage (Uc) Add 50V, displayed deviation not exceeding

0.5%

Terminals D21,D22 Zero sequence voltage

(U0)

Add 50V, displayed deviation not exceeding

0.5%

Terminals D25,D26 4～20mA DC Input 1 Add 10mA, displayed deviation not

exceeding 3%

Terminals D27,D28 4～20mA DC Input 2 Add 10mA, displayed deviation not


WLD[K]-JY-222-2010

27

Analog quantity

terminal Analog quantity name Test method

exceeding 3%

Terminals D09、D10；

D13,D14 add current by

polarity；D15,D16；

D17,D18；D19,D20 add

voltage by polarity

3-phase active power

Add a single rating to current and 100V to

line voltage

Alter phase angle, displayed power deviation

not exceeding 0.5%

Terminals D09,D10；

D13,D14 add current by

polarity；D15,D16；

D17,D18；D19,D20 add

voltage by polarity

3-phase reactive power

Add a single rating to current and 100V to

line voltage

Alter phase angle, displayed power deviation

not exceeding 2%

Terminals C12 and

C16(common terminal of

impulse +24V)

Impulse 1（MC1） Connect each point once, add 1 to the count

Terminals C13 and


impulse +24V)


Terminals C14 and


impulse +24V)


Terminals C15 and


impulse +24V)


4.2 Monitoring of binary input

Binary input can be monitored under the [Binary input] menu in the [State Display] menu,

press the ““, ““ keys to flip over.

Binary input

terminal

Binary input name Test method

B01 Common terminal of binary

input -

（Should be connected to

External power supply of 220V or 110V

DC can be applied, connect the

negative terminal to terminal B01,


WLD[K]-JY-222-2010

28

DC220V or DC110V

negative terminal of external

power supply）

positive terminal to terminal B02～B13,

in [Binary input] menu in the [State

Display], the status of binary input can

be seen.

The device also has a 24V DC

supply, if it is used, terminal B14 can be

connected to terminal B02～B13, in

[Binary input] menu in the [State

Display], the status of binary input can

be seen.

The binary input “input by manual

trip”, “input by manual closing”,

“operating circuit” is gathered from

operating circuit , which can monitor the

state of operating circuit. In the test,

negative controlling power is connected

to terminal A19(-WC), and positive

controlling power to A15 （ manual

closing input）, A17（manual trip input）.

Manual closing/ manual trip state can

be seen in the【input quantity】menu.

The positive controlling power is

connected to terminal A20（+WC） ,

negative controlling power to trip

position monitoring terminal A13 or

closing position monitoring terminal

A14. Open/closing state of operating

circuit can be seen in the 【 input

quantity】menu.

Please note about the binary input

voltage upon ordering, it is set to

DC220V by default.

B02 Circuit breaker

position(Breaker)

B03 Carriage operation

position(Trolley Run)

B04 Carriage test position(Trolley

Test)

B05 Ground knife position(Earth

Switch)

B06 Spring is not energized(Spring)

B07 Logical control 1(Joint Trip 1)




B11 QF2 contact(QF2 Node)

B12 Motor’s

normal-reverse(Nor.Rev.Func.)

B13 Binary input 12(Input 12)

Binary input in

operation

circuit

Binary input by manual

trip(Manual Trip)

Binary input by manual

closing(Manual Close)

Operation circuit(Operate CIR)

B14 Positive terminal of internal

24V power supply

4.3 Monitoring of binary output

Binary output can be monitored under the [Binary output] menu, press the ““, ““ keys


WLD[K]-JY-222-2010

29

to flip over.

Binary output terminals Binary output name Test method

B15-B16 Device Failure

Select open and close menu, use “+”,

“-” key to operate and test the

corresponding terminals. B31-B32

and B34-B35 are common open

terminals that should close.

B17-B18 Trip Signal

B19-B20 Alarm Signal

B21-B22 Output 4

B23-B24 Output 5

B25-B26 PROT Output 1

B27-B28 PROT Output 2

B29-B30 Softstart Output

B31-B32（Common

open） Output 9

B32-B33

B34-B35（Common

open） Output 10

B35-B36

A22-A23 Remote Close

A22-A24 Remote Trip


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5.．． Operation instructions．．．．．．．．．．．．．．．．．．．．． 5.1 Control panel of device

128*64 matrix LCD (The LCD will go off after a period of absence of keyboard operation;

the LCD will be illuminated automatically when any key is pressed or in case of

protection trip or alarm.)

Signal indicator: operation, communication, operation, alarm, reclosure, fault (of the

device)

Circuit breaker state indication: indicating the current state of the circuit breaker (“Open”,

“Close” position indication)

Remote/local selection signal, local opening/closing button

Key pad: , , , , Cancel, -, +, Enter, Revert

The 6-bit nixie tube displays the primary measured values in real time: IA, IB, IC, Uab,

Ubc, Uca, P, Q, Cosφ. (Please set the PT, CT transformation ratios properly in the System

Parameters menu). The maximum display range of the power on the nixie tube is: 99999.

Note: Measurement IA: AA, measurement IB: bA, measurement

IC: CA, voltage Uab: AbkV, voltage Ubc: bCkV,

voltage Uca: CAkV, active power: PkW, reactive power:

qkvar, power factor: H

5.2 Instructions for use of key pad and LCD display

During the device’s normal operation, it will display the measuring current, voltage,

power, time and operation state of motor (indicating motor’s normal-reverse) in cycle.

Press the “Enter” key to enter the main menu, which is a multi-level tree menu. Press the


WLD[K]-JY-222-2010

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““, ““ keys to move the cursor to the desired entry, press the “Enter” key to enter this

entry, and press the “Cancel” key to return to the next higher level of screen. If this screen

is still a menu, continue to press the ““, ““ key to select the desired entry, press the

“Enter” key to enter the next level of screen, and press the “Cancel” key to return to the

next higher level of menu. If there is no menu screen, be sure to press the “Cancel” key to

return to the next higher level of menu. The main menu is shown at the center of the

following figure, with the corresponding submenus on both sides.

The main interface displays the primary operating parameters in turn. The maximum

displayed value of the primary is 6000.0A. For systems with a rated current of 5A, the set

CT transformation ratio shall not exceed 2000. If the primary power is greater than

1000kW, the display unit is MW, otherwise is kW.

Main menu

1. State Display

2. Signal Revert

3. Report Display

4. Output Test

5. SYS Parameters

6. Setting Value

7. Clock Setting

8. Password

9. Version Info.

5. Parameters

Setting Zone No.

Comm. Setting

B.Parameters

D/A Setting

Pulse Energy

Trip Times Clear

D/A setting

Impulse energy setting

分闸次数清零

Type:MxPR-610Hb

Ver ：V□.□□.□□

Date:20□□-□□-□□

XXXCRC: □□□□□□□□□

1. State Display

Protection data

Measuring data

Binary input

Pulse Energy

Phase Angle

Harmonic Data

DC Input Data

Trip Times

3. Report Display Trip Report Binary Report Event Report MotorStart Value

6. Settings（Note 3）

Protection On/Off 。。。。。。 Note: See protection setting table for detailed setting menus.

4. Output Test

Device Failure

Trip Signal

Alarm signal

Output 4

Output 5

PROT Output 1

PROT Output 2

Softstart Output

Output 9

Output 10

Remote Close

Remote Trip

Operate All

7. Clock setting

Date：□□-□□-□□

Time：□□:□□:□□

8. Input Password

□□□□

2. Signal Revert

Enter


WLD[K]-JY-222-2010

32

Note 1：Only the motor’s protective and monitoring device has this item.

Note 2：The system parameters such as basic parameters, output matrix and D/A

settings are variable with the different devices. See the device description.

Note 3：The setting menu is shown in the device description.

State Display

The [State Display] menu contains 8 submenus, including protection data, measuring

data, binary input, impulse energy, angle display, harmonic data, DC measurement and

trip statistics. It is described as follows:

1.1Protection data ↑ ↓

Ia＝□□□.□□A

Ib＝□□□.□□A

Ic＝□□□.□□A

Uab＝□□□.□□V

Ubc＝□□□.□□V

Uca＝□□□.□□V

I1＝□□□.□□A

I2＝□□□.□□A

I0＝□□. □□□A

U1＝□□□.□□V

U2＝□□□.□□V

U0＝□□□.□□V

Pn＝□□□□.□W

F＝□□□.□□Hz

I0js＝□□□.□□A

U0js＝□□□.□□V

Protection current

Bus line voltage

Positive sequence current of protection

Negative sequence current of protection

Zero sequence current of high-voltage side

（analog）

Positive sequence voltage

Negative sequence voltage

Zero sequence voltage（analog）

Reverse power

Frequency

Zero sequence current（calculation value）

Zero sequence voltage（calculation value）

1.2 Measuring data ↑ ↓ IA＝□□.□□□A IB＝□□.□□□A IC＝□□.□□□A Ua＝□□□.□□V Ub＝□□□.□□V Uc＝□□□.□□V P＝ □□□□.□W Q＝ □□□□.□var CosΦ＝□.□□□

Measuring current

Bus phase voltage（no display in VV

wiring mode）

Active power

Reactive power

Power factor


WLD[K]-JY-222-2010

33

Note: In the standard configurations, the input circuit has the connection to an

external 220VDC control power supply. When no DC control power supply or control

system is available on site, but a 110VDC control power supply is available, a 110VDC

control power supply may be used for direct connection through local hardware

adjustment, or the 24V power supply of the device may be used as the input power supply

(when the input common terminal is +24V, terminal number: B14, Terminal B01 is kept

float). However, this must be specified upon ordering.

Binary input ↑ ↓

Breaker：□

Trolley Run:□

Trolley Test:□

Earth Switch:□

Spring:□

Joint Trip 1 ：□

Joint Trip 2 ：□

Joint Trip 3 ：□

Joint Trip 4 ：□

。。。。。。

At Closed, circuit breaker is at closed position; at Open,

circuit breaker is at open position. Note：The The position

of the circuit breaker relates to protection logic, with

fixed position.

When Closed, trolley at operating position

When Closed, trolley at test position

When Closed, trolley at closed position

When Closed, energy storage not completed

Pulse Energy ↑↓

MC1：□□□□□□□□□□

MC2：□□□□□□□□□□

MC3：□□□□□□□□□□

MC4：□□□□□□□□□□

＋□□□□□□□·□□□kWh

＋□□□□□□□·□□□kvh

－□□□□□□□·□□□kWh

－□□□□□□□·□□□kvh

Accumulation of the device’s real-time active and reactive calculations

over time, + for positive direction, - for negative direction

External impulse energy input counting (4-way)

Phase Angle↑ ↓

Ua： 0 0 0 ·0 0°

Ub：□□□·□□°

Uc：□□□·□□°

Ia：□□□·□□°

Ib：□□□·□□°

Ic：□□□·□□°

IA：□□□·□□°

IB：□□□·□□°

IC：□□□·□□°

Phase angle relative to Ua, Ua as 0° by default. When wiring method is

VV, it displays line voltages relative to Uab, the same as follows

Phase angle of protection current relative to Ua

Phase angle of measuring current relative to Ua

Description varies with model, see corresponding terminal diagram

for details


WLD[K]-JY-222-2010

34

Signal revert

In the [Signal Revert] menu, press the “Enter” key, the signal relay and the “Operation”

indicator on the panel will be reset.

Report Display

The [Report Display] menu includes 4 submenus, including trip report, remote signal

report, event report and clear report. Event recording includes: device self-check fault,

device setting value modification, system parameter modification and setting zone

number modification, etc. Trip report can be recorded for the last 50 events, remote signal

report for 100, event report for 30 at most. Beyond this, the latest report will overwrite the

earliest one. Press the “Enter” key to enter the corresponding [To view xx report, please

enter report number: 00 ] menu, and enter any figure within storage volume, press the

“Enter” key to display the contents of that report. The screen is as follows:

Press key to see the specific operation value. Press and keys to flip over.

Operation values

Trip statistics

Total: □□□□ times

Harmonic↑ ↓

I2： □□□·□□%

I3： □□□·□□%

I4： □□□·□□%

I5： □□□·□□%

。。。。。。

I11： □□□·□□%

2~11st harmonics for which analog channels have been selected in system

DC Input

DC1：□□□·□□mA

DC2：□□□·□□mA External DC input 4~20mA (2-way)

Report No.：□□ ↓

20□□-□□-□□

□□：□□：□□：□□□

□□□□□□

Report No. of this report

Year, month, day, hour, minute, second and

millisecond when it took place

Description of report’s contents


WLD[K]-JY-222-2010

35

Output test

After entering the [Output Test] menu, the correct password is required to enter the

[Output Test] menu. It displays the following:

Press “Enter” key

——————＞

＜——————

Press “Cancel” key

(Note: After signal relay closed, press the “Revert ” key or enter the【Signal revert】

menu, press “Enter” to make the signal relay reverted. When the test is performed on

the 6 protection outputs, the starting relay will be in the “Closed” state automatically.

The “+”, “-” keys are used for switching between the “Close/Open” control.)

4．Output test ↑ ↓

Device Failure

Trip Signal

Alarm signal

Output 4

Output 5

PROT Output 1

PROT Output 2

Softstart Output

Output 9

Output 10

Remote Close

。。。。。。

Operate all relays

Device Failure

On Off

Ia = □□□·□□ A

Ib = □□□·□□ A

Ic = □□□·□□ A

Uab = □□□·□□ V

Ubc = □□□·□□ V

Uca = □□□·□□ V

I1 = □□□·□□ A

I2 = □□□·□□ A

I0 = □□·□□□ A

U1 = □□□·□□ V

U2 = □□□·□□ V

U0 = □□□·□□ V

Ua = □□□·□□ V

Ub = □□□·□□ V

Uc = □□□·□□ V

I0js = □□□·□□ A

U0js = □□□·□□ V

Pn = □□□□·□ W

DC1 = □□□·□□ mA

DC2 = □□□·□□ mA

F = □□□·□□ Hz

Protection current

Bus line voltage

Positive sequence, negative sequence, zero sequence of

protection current

Zero sequence is as analog.

Positive sequence voltage

Negative sequence voltage

Zero sequence voltage

Bus phase voltage

Zero sequence current calculation value at high-voltage side

Zero sequence voltage calculation value

Reverse power

Non-electric quantity DC

Frequency


WLD[K]-JY-222-2010

36

System parameters

After entering the [System Parameters] menu, the correct password is required to

enter the [System Parameters] menu. It displays the following:

Setting zone number setting: range 00~07.

Communication setting

5．Parameters↑ ↓

Setting Zone No.

Comm. Setting

B.Parameters

D/A Setting

Pulse Energy

Trip Times Clear

Com. Setting ↑ ↓

RS485 Address

□□

RS485 Baudrate

□□

Pulse Input Time

□□□□ms

IP Address

□□□. □□□. □□□. □□□

Subnet Mask

□□□. □□□. □□□. □□□

KW Default

□□□. □□□. □□□. □□□

Communication address of device 01～99

00：2.4KB；01：4.8KB；02：9.6KB；03：19.2KB；

04：38.4KB；05：115.2KB

Confirmation time of 4-way impulse

energy, >10ms, < impulse width of kilowatt-hour

meter

For Ethernet communication


WLD[K]-JY-222-2010

37

Setting of basic parameters (see the description of the protection device for basic

parameters)

D/A setting

The device has two 4~20mA outputs. The DA1~DA2 adjustment factor is used to

adjust the accuracy of the channel output. The DA1~DA2 channel selection is used to

select the corresponding analog quantity channel (see the description of the protection

device for specific reference quantities). In the accuracy test, make sure the field ground

is in good contact; otherwise the accuracy might be affected.

Impulse energy setting

Energy base numbers can be set, including Impulse 1, Impulse 2, Impulse 3, Impulse

4, positive active energy, positive reactive energy, negative active energy and negative

reactive energy.

Clear trip count

It is used to clear the trip count.

Settings

After entering the password, you can enter the [Settings] menu. See the settings

description of the protection device for the detailed description.

Clock setting

A battery-back real-time clock is provided in the device, which can perform time

adjust remotely via the communication network or in-site time adjust in the [Time Setting]

menu.

Setting the CT secondary current rating 00：

1A；01：5A

Setting the PT transformation ratio 1～1500

Setting the CT transformation ratio 1～5000

Setting the CT secondary wiring mode 00：

3-phase；01：2-phase

Setting the PT secondary wiring mode 00：YY；

01：VV

Setting analog quantity channels 0~12 for

harmonic monitoring, select 0 to exit from the

harmonic calculation function.

B.Parameters

Rating Current

□□

PT Ratio

□□□

CT Ratio

□□□

CT Wiring Mode

□□

PT Wiring Mode

□□

Harmonic Channel

□□

。。。。。。


WLD[K]-JY-222-2010

38

Enter this menu and press the “Enter” key, the clock will stop refreshing and a cursor will appear. Move the

cursor to the desired position for modification by pressing the ““, ““ keys, modify to the desired value with

the “+”, “-” keys. Press the “Enter” key to complete setting. If the “Cancel” key is pressed, the setting will be

cancelled and the screen continues to refresh the clock.

Password

The [Password] menu is used to modify the password for entry into the Settings,

System parameters and Output Test submenus. The initial password is provided by the

factory. The universal password is “1000”.

Move the cursor to the desired position for modification by

pressing the ““, ““ keys, modify to the desired password with

the “+”, “-” keys. Press the “Enter” key to enter the new password

setting menu as above; press the “Cancel” key to cancel the setting.

GPS clock synchronization

The GPS clock synchronization signal is input as rs485 differential voltage, the

device is able to receive GPS clock minute synchronization (or second synchronization). If

there is GPS signal, there will be and flashing on the bottom of cycle menu;

otherwise won’t.

The principle of GPS clock synchronization: The second pulse or minute pulse act

with the monitoring system, the time base with second precision is sent by monitoring

system, when the GPS second differential signal arrives, the time base is unified and the

milliseconds are cleared.

Version Info

In the main menu, after entering the [9. Version Info] menu, the model, software

version No. and date of the device will be displayed.

Note: For a corresponding nonstandard model, the device’s displayed model does not

have to be changed.

7. Clock setting

Date：20□□－□□－□□

Time： □□：□□：□□

Input Password

0 0 0 0


WLD[K]-JY-222-2010

39

6.．． Check of protection function．．．．．．．．．．．．．．．．．．．．．．．．．

6.1 Check of prolonged start time protection(Start Time Over)

Wire as Figure 6-1, switch on the prolonged start time protection. Set motor’s rated

current and starting time according to motor’s nameplate parameters or real measuring

value. The current （>1.2Ie）is input, when the motor’s starting time is exceeded, the

protection will operate. The terminals B17-B18, B25-B26, B27-B28 should be shorted.

Figure 6-1

6.2 Check of 2-section over-current protection(Overcurrent)

Wire as Figure 6-1, switch on instantaneous over-current protection. The current 1 of

instantaneous over-current (at starting) and current 2 of instantaneous over-current (after

starting) are be set separately. If the fault current is input at starting time or after starting time,

the protection will operate. The terminals B17-B18, B25-B26, B27-B28 should be shorted.

Switch on FC block alarm, 50ms is added up to instantaneous over-current protection delay at

this moment. When the fault current exceeds FC breaking current, (the current setting value

should be greater than over-current setting value), FC block instantaneous over-current

protection will operate. Locked time can be set in the system parameters.

Locked rotor protection is provided after starting, which checking way is the same as

instantaneous over-current after starting.

Setting value of

instantaneous

over-current (A)

1.2 Ie 2 Ie 5 Ie 10 Ie

Instantaneous

over-current

delay (s)

10 5 2 1

Current 1 of

instantaneous

over-current

（ at starting

time）(A)

MMPR-610Hb

D01

A01

D03

D05

A02

D02(D04,D06)

Ia

Ib

Ic

Ia’(Ib’,Ic’)

Power supply


WLD[K]-JY-222-2010

40

Current 2 of

instantaneous

over-current

（ after starting

time） (A)

Instantaneous

over-current

time (s)

6.3 Check of negative sequence over-current protection(NS Overcurrent)

Negative sequence current is derived from protection current calculation. Wire as

Figure 6-1.

6.3.1 Negative sequence over-current definite time limit(NS OC DT)

Switch on negative sequence over-current definite time limit protection, inputting

currents of 3-phase in negative sequence mode. See the following table and set,

measuring operation current value for record.

Setting value of negative

sequence current (A) 0.2 Ie 0.4 Ie 0.6 Ie 0.8 Ie

Negative sequence

current delay (s) 10 5 2 1

Negative sequence

current operation value

(A)

Negative sequence

current operation time (s)

6.3.2 Negative sequence over-current inverse time limit(NS OC IT)

Switch on negative sequence over-current inverse time limit, select one curve in

inverse time limit modes（01：Standard inverse time limit；02：Unusual inverse time limit；

03：Extreme inverse time limit；04：Long inverse time limit）, the time constant Tp of inverse

time limit is set as 0.50s and the current Ip of inverse time limit is set as 5A. See the

following table and set. When over-current inverse time limit protection operates, the

measuring terminals B17-18, B25-26, B27-B28 should be shorted.

Curve type Operation value

of inverse time

limit

2Ip(A) 3Ip(A) 5Ip(A)

01：Standard

inverse time limit

Reference

operation time

5.105s 3.15s 2.140s


WLD[K]-JY-222-2010

41

Ip=5A，τp=0.5s Actual

operation time

02：Unusual

inverse time limit

Ip=5A，τp=0.5s

Reference

operation time

6.750s 3.375s 1.688s

Actual

operation time

03：Extreme

inverse time limit

Ip=5A，τp=0.5s

Reference

operation time

13.333s 5.000s 1.667s

Actual

operation time

04：Long inverse

time limit

Ip=5A，τp=0.5s

Reference

operation time

60.000s 30.000

s

15.000s

Actual

operation time

6.4 Check of zero sequence over-current protection(ZS Overcurrent)

Zero sequence over-current protection can select trip or alarm. When zero

sequence over-current protection trip is switched on, the alarm will be switched off

automatically. Wire as Figure 6-2.

Figure 6-2

See the following table and set, measuring the operation current value for record. If

the zero sequence over-current protection operates, the measuring terminals B17-18,

B25-26, B27-B28 should be shorted. If zero sequence over-current alarm is provided, the

measuring terminals B19-B20 should be shorted.

Setting value of zero

sequence current A) 0.20 0.50 1.00 1.50

Setting value of zero

sequence current delay5 3 2 1

MMPR-610Hb

D07

A01

A02

D08

I0

I0’

Power supply


WLD[K]-JY-222-2010

42

（s）

Operation value (A)

Operation time（s）

6.5 Check of overload protection(Overload)

Overload protection uses the maximum current of phase for judgment. Trip or alarm

can be selected. Wire as Figure 6-1, switch on overload trip. When the overload trip is

switched on, the alarm is switched off automatically.

See the following table and set, measure operation current value and keep a record

in the table. When the overload alarm operates, the measuring terminals B19-20 should

be shorted. When the overload trip operates, the measuring terminals B17-B18, B25-26,

B27-B28 should be shorted.

Setting value of

overload (A) 5 10 15 20

Overload delay (s) 10 5 2 1

Overload operation

value (A)

Overload operation

time (s)

6.6 Check of overheat protection(Motor Over Heat)

Wire as Figure 6-1, switching on overheat protection, the other protections are

switched off. The motor starting time is set as 5s and set K1=1.0，K2=0; The heating time

constant is set according to the following table. Input the current showed in the following

table（Ie is the rated current）, and then record the operation time. If it operates correctly,

the measuring terminals B17-B18, B25-26, B27-B28 should be shorted, and the operation

time should accord with the calculation value derived from overheating judgment criterion.

Overheating alarm time = Trip output time × Overheating alarm factor（％）. When

overheating alarm operates, the measuring terminals B19-B20 should be shorted.

Input

current value

Heating constant

1.5Ie 2Ie 4Ie 6Ie

100

1000

6.7 Check of underload protection (Underload PROT)

Wire as Figure 6-3, and switch on the underload protection, imitating the state of

circuit breaker closing. Input starting current（>0.1Ie）and imitate motor start. After starting

time, the motor is put into the operation state. Reduce the fault current and make it be less


WLD[K]-JY-222-2010

43

than the setting value of underload, the underload protection will operate. The underload

protection can be switched On/Off on alarm or trip. When it operates on the trip, the

measuring terminals B17-B18, B25-26, B27-B28 should be shorted; When it operates on

the alarm, the measuring terminals B19-B20 should be shorted.

Figure 6-3

6.8 Check of voltage protection(Voltage PROT)

6.8.1 Check of under-voltage protection(Undervoltage PRO)

Under-voltage protection uses the maximum line voltage for judgment. In case of PT

failure, the under-voltage protection will be blocked. Wire as Figure 6-4, and switch on

under-voltage protection, PT failure and PT failure block are switched on.

Figure 6-4

See the following table and set, measuring the operation voltage value for record.

When the under-voltage operates, the measuring terminals B17-B18, B25-B26, B27-B28

should be shorted. When PT failure occurs, the under-voltage will be blocked.

Setting value of

under-voltage (V) 95 90 85 80

Under-voltage delay

(s) 10 5 2 1

MMPR-610Hb

D01(D03,D05)

A01

D02(D04,D06)

B01

A02

B02

Ia(Ib,Ic)

Ia’(Ib’,Ic’)

Power supply

Auxiliary contact of breaker

MMPR-610Hb

D15(D17,D19)

A01

D16(D18,D20)

B01

A02

B02

Ua(Ub,Uc)

Ua’(Ub’,Uc’)

Power supply

Auxiliary contact of breaker


WLD[K]-JY-222-2010

44

Operation value of

under-voltage (V)

Operation time of

under-voltage (s)

6.8.2 Check of over-voltage protection(Overvoltage PROT)

Over-voltage protection uses the maximum line voltage for judgment. Wire as Figure

6-4, and switch on the under-voltage protection.

See the following table and set, measuring the operation voltage value for record.

When the over-voltage operates, the measuring terminals B17-B18, B25-B26, B27-B28

should be shorted.

Setting value of

over-voltage (V) 105 110 115 120

Over-voltage delay

(s) 10 5 2 1

Over-voltage

operation value (V)

Over-voltage

operation time (s)

6.9 Check of logic control protection(Joint Trip PROT)

Switch on all the logic control protection, the delay is set as 0s.

Terminal B01 is connected to negative pole of DC220V, and terminals B07, B08, B09, B10

is connected to the positive pole of DC220V separately, then the logic control protection

will operate separately. The measuring terminals B17-18, B25-26, B27-28 should be

shorted.

6.10 Check of non-electric quantity protection(Non-electric)

Wire as Figure 6-5, and switch on non-electric quantity protection. Take non-electric

quantity 1 protection for example.

Figure 6-5

MMPR-610Hb

D25 A01

D26 A02

DCSIn+

DCSIn-

Power supply


WLD[K]-JY-222-2010

45

See the following table and set, measuring the DC operation value and keep a

record in the table. When the protection operates, the measuring terminals B17-18,

B25-26, B27-28 should be shorted.

Setting value of

non-electric quantity 1

(mA)

5 10 15 18

Non-electric quantity 1

delay (s) 10 5 2 1


operation value (mA)


operation time (s)

6.11 PT/CT failure

Currents of 3 phases are wired as Figure 6-1, imitate all kinds of CT failure, the

device will send alarm signal, the measuring terminals B19-B20 should be shorted.

Voltages of 3 phases are wired as Figure 6-4, imitate all kinds of PT failure, the device

will send alarm signal, the measuring terminals B19-B20 should be shorted.

6.12 Check of synchronous motor protection(Synchrodyne)

6.13.1 Check of out-of-step protection(Out-Of-Step PROT)

Wire as Figure 6-3, switch on out-of-step protection, imitating circuit breaker closing

state. Input impulse current and set the setting value according to the following table.

Measure the operation delay for record. When the out-of-step protection operates, the

measuring terminals B17-18, B25-26, B27-28 should be shorted.

Setting value of

out-of-step current

（A）

1.2 Ie 2 Ie 3 Ie 4 Ie

Setting value of

out-of-step delay

（s）

4 3 2 1

Out-of-step

operation delay（s）

6.13.2 Check of asynchronous impact protection(Asynchro.Impact)

Wire as the testing power method, switch on the asynchronous impact protection.

The asynchronous impact delay is set as 1s. See the following table and set, measuring

the operation delay value for record. When the asynchronous impact protection operates,


WLD[K]-JY-222-2010

46

the measuring terminals B17-18, B25-26, B27-28 should be shorted.

Setting value of

asynchronous impact （W）

10 50 100 150

Setting value of

asynchronous impact delay

（s）

10 5 2 1

Asynchronous impact

operation delay（s）

6.13 Check of under frequency unloading protection(Under-frequency)

The frequency of under frequency unloading protection is derived from measuring

frequency of voltage Uab. To prevent the load feedback, the frequency slip block (On/Off)

and low current block can be used. To prevent fast voltage drop from mis-operation of

frequency protection, under-frequency unloading protection has under-voltage block. Wire

as Figure 6-6, switch on under-frequency unloading protection. The slip block is provided

when measuring the slip frequency. Switch off the slip block when measuring frequency

operation value, operation delay, so as not to affect the operation accuracy.

Figure 6-6

See the following table and set, measuring the operation value for record. When the

under-frequency unloading protection operates, the measuring terminals B17-18,

B25-B26, B27-B28 should be shorted.

Setting value of

under-frequency (Hz) 49.5 49 48.5 48

Setting value of

under-current (A) 0.5 0.5 1 1

Setting value of

under-voltage (V) 10 20 30 60

Setting value of slip

block (Hz/s) 3 4 5 7

MMPR-610Hb

D01

A01

D02

D15(D18)

A02

D16(D17)

Ia

Ia’

Ua(Ub)

Ua’(Ub’)

Power supply


WLD[K]-JY-222-2010

47

Setting value of

under-frequency operation

delay (s)

0.5 1 2 3

Operation value of

under-frequency (Hz)

Operation time of

under-frequency (s)

Slip block value

(Hz/s)

6.14 Normal-reverse function(Nor.Rev.Func.)

Switch on the normal-reverse function. Input DC220- at binary input terminal B01 and

DC220+ at B12 when there is not protection current in the motor. If the mark “M-” is

displayed in the position of motor operation state where is in the lowest line of cycling

display menu, it proves that the motor is in the reverse state at this moment. Then select

the current commutating mode, and input commutating current to check if the negative

sequence current or power data is correct.

6.15 Soft starting function(Soft Startup)

Switch on the soft starting function and the soft starting mode is set as “ON”. The

starting method selection expresses that the relation of starting current and starting time

is “and” or “or”, setting the soft starting current. The binary input terminal B01 is

connected to negative pole of DC220V, and the terminal B02 is connected to the positive

pole of DC220V（imitating the circuit breaker state）.The binary input terminals are not

connected to the positive pole of DC220（the auxiliary contact QF2 is at opening

position.）. See the motor’s starting current curve（Figure 2-1）, input single phase current

and make it be greater than setting current value at motor’s starting time, and then make

it drop to be less than soft starting setting current value. Until the motor’s starting time,

the device will send a command of operating gear closing, and the terminals B29-B30

are closed for 500ms. If after closing operating gear for 3 seconds, the device don’t

detect QF2 is closed（binary input terminal B11）, the breaker will trip and report soft

starting failue. The terminal B11 is connected to positive pole of DC220V, the soft

starting is successful.

Figure 6-7 is wiring diagram of controlling circuit.


WLD[K]-JY-222-2010

48

Figure 6-7

QF2

QF

High-voltage resistor or reactor


WLD[K]-JY-222-2010

49

1.IA1、IB1、IC1为保护电流。

2.I0为零序电流。

3.Ia、Ib、Ic为测量电流。

4.Ua、Ub、Uc为母线电压。

5.U0为零序电压。

6.UL为线路电压。

7.DCSIn为2路4～20mA直流

输入。

CPUI/O AC

ON

OFF

Power

Ne

t 2

Ne

t 1

De

bu

g

Appendix 1: Terminal diagram of device

Appendix 1 Terminal diagram of MMPR-610Hb motor protection and monitoring device

Input 12

Pulse 1（MC1）

D26

D28D27

D25 DCSIn1+

DCSIn1-

DCSIn2-

DCSIn2+

A07

A09A08

A11A12A13A14A15A16A17

A10

-WC

+WC

A18

A20

A19

A22

A24A23

A21

C01 GPSA

GPSB

C03

C05C04

C02COM1A

C07

C06

COM1A

COM1B

C09

C08

COM1B

C11C10

C12

C15C14

DCS1+

C16

DCS1-C18

DCS2-C20C19 DCS2+

C17

C13

Run

Net1

Net2

COM1

COM2

Debug

COM2B

COM2B

COM2A

COM2A

IB'

I0'

AC

IA'

Ic'

Ib'

Ia'

CPU

B33

B36B35B34

B32

B31B30

A03 B15

A05A06

A04

B22

B29B28B27B26B25B24B23

D23

D21

D19

D17

B20B21

B19

B16

B18B17

Power off

Power off

D15

D13

IA

D11

D09

I0

A01

A02

B07

B11

B13

B14

B12

B09B08

B10

OFFD07

IB

D05 Ic

D03 Ib

D01 Ia

B03B04B05B06ON

B02B01

POWER I/O

D24

D22

D20

D18

D16

D14

D12

D10

D08

D06

D04

D02

IC IC'

Ua Ua'

Ub Ub'

U0'U0

Uc'Uc

(+24V)

Pulse 2（MC2）

Pulse 3（MC3）

Pulse 4（MC4）

1.Ia,Ib,Ic are protective currents.2.I0 is zero-sequence current.3.IA,IB,IC are measuring currents.4.Ua,Ub,Uc are bus voltages.5.U0 is zero-sequence voltage.6.DCSIn is 2-way 4～20mA DC input.7. Net1,Net2 are ethernet interfaces,COM1,COM2 are 485 interfaces.8. If +24V on IO board is standard configuration or not,it is used as input power supply only when using internal 24V.

QF2 Node


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Appendix 2: Typical wiring diagram

Appendix 2 Typical wiring diagram of MMPR-610Hb motor protection and monitoring

device

pulse

currentvoltage

b reaker

Net2

Net1Ethernet port

Softstart

Output

PROT Output 2

PROT Output 1

Output 5

Output 4

Alarm signal

（24V+）

Trip Signal

DCSIn1-

DCSIn2-

DCSIn2+

DCSIn1+

AC plug-in

Output contact 10

normally closed

Output contact 10

common terminal

I/O plug-in unit

Alarm signal

Output 4

PROT Output 2

Softstart

Output

Output contact 9

normally open

Output contact 9

normally closed

Output contact 10

normally open

Output contact 9

common terminal

Operating circuit failure

Power off

Trip position

Closing position

AC plug-in unit

Bus voltage Zero-sequence Protection current Zero-sequence Measuring current

Note： 1.As shown in the figure,ZK（remote/local changeover switch）and KK（manual operating switch）are installed on the panel,when remote/local changeover switch and manual operating switch of device panel are used,terminal A21 is connected to +WC. 2.As shown in the figure,PT secondary is wye-connected,when it is in V-V wiring,terminals D15,D20 are connected to phase A of PT secondary，terminals D16,D17 to phase B of PT secondary，terminals D18,D19 to phase C of PT secondary.

Shielded ground

plug-in unit

plug-in unit

Joint Trip 1

IB IB'

Pulse common ＋24V

Negative reactive

pulse

Negative active pulse

Positive reactive

Positive active pulse

DCS2-

DCS2+

DCS1-

Pulse 4（ 4）

Pulse 3（）

Circuit

IC IC'Uc'UcUb'UbUa'Ua IA'IAI0'I0

DCS1+

2

2

2

2

Shielded ground

1

1

1

1

Pulse common ＋24V

Pulse 2（ 2）

Pulse 1（）

Input common

terminal-

Breaker

Trolley Run

Trolley Test

Earth Switch

Spring

Joint Trip 2

Joint Trip 3

Joint Trip 4

QF2 Node

Nor.Rev.Func.

Input 12

Device Failure

Device Failure

Trip Signal

+

Manual trip input

Remote control trip

Device panel＋

Manual closure input

Remote control closure

Remote control common terminal

-

Closing coil

Trip position monitoring

Trip coil

Closing position monitoring

Power supply-

Shielded ground

Power supply+

U0 U0' Ia Ia' Ib Ib' Ic Ic1'

Pow

er

Ethernet port

Debugging port

MMPR-610Hb

microcomputer motor protection monitoring device

CP

U

PROT Output 1

Output 5


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Appendix 3: Operating circuit of MXPR-600Hb series device

Traditional operating circuits are started by current, while a voltage maintaining circuit

realizes electric trip prevention. An anti-trip relay will be selected depending on the current

of the trip/closing circuit of the circuit breaker. However, this has poor generality and can

hardly be realized for circuit breakers with low trip and closing currents (such as 10kV

circuit breakers from AEG Company in Germany, whose trip and closing currents are not

greater than 0.2A). To simplify wiring and design finalization, and to improve the generality

of the product, we offer a new operating circuit shown below.

TBJ2

TBJTCJ1

SHJ

YTJ

HBJA20

HBJ

TCJ2

STJ

STJ

1LP

JnTn3

Tn4

HWJA10

TWJA09

DLA13

HWJ

TWJ

A08TWJ

A12HWJ

A14

A20

A07

A11

TCJ

SHJ

TBJ1

Tn2

A24

Tn1

Jn

A22YHJ

A18

A19

A17

A23

A15 Closing circuit

Trip circuit

Fuse

Small bus

TQDL

HQDL

KK84 5

ZK2

2LP

7KK

686ZK

3ZK

1

A16

Schematic diagram of operating circuit

In the diagram, KK is a traditional operating switch, used for manual trip/closing

operations, ZK is a changeover switch, used for changeover of local and remote control.

When ZK is at the “Remote” position, the power of the remote control circuit will be

switched on, i.e., Terminal A22 of the device is connected to +KM, and the power of the

manual operating circuit is cut off, disabling manual closing and manual trip. On the

contrary, when ZK is at the “Local” position, the power of the manual operating circuit is


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switched on and that of the remote control circuit is cut off.

Note: The dotted line outlines the internal circuit of the protection device. All our

devices marked with “anti-trip circuit” are designed on this operating circuit.

Terminals Tn1, Tn2 corresponding to the protection relay Jn are determined by the

corresponding protection output control word. Jn can be any one or more of Protection

outputs 1-8.

Whether local or remote control, the precondition to jump is Terminal A15 of the device is

always connected to +WC. After manual or remote controlled closing, if a short-circuit fault

occurs, the protection will operate to trip the circuit breaker. Though Terminal A15 of the

device is connected to +WC, the closing circuit is disconnected by TBJ1 and will not be closed

again. In this way, circuit breaker jump is effectively prevented.

Documents

Microcomputer Motor Protection Relays and Monitoring Device