RELIABLE GREEN POWER SOLUTIONS 06 05 04 03 07 02 01 11 08 … · 2017. 2. 1. · controller controller controller power stack motor km1 km0 m.v. power supply sensor l1 l2 l3 u v w

RELIABLE GREEN POWER SOLUTIONS

MFS Soft Starter – Technical Brochure Opening up a smart, green, high-efficient power world

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Contents

Introduction 01

Technical Capacity / Services 02

Quality Assurances / Applications 03

Features 04

Principle 06

MFS Series – Extended 08

MFS Series – High Power 14

Technical Applications 17

Technical Parameters 18

Identification code 19

Model selection 20

IntroductionThe MFS series products are the ideal solution for smooth start, smooth and rapid stop of large sized medium voltage synchronous and asynchronous motors under large load torque and smaller starting current conditions.

The MFS Multi Frequency Starters use advanced motor control technology to soft start and stop medium voltage motors under load. A provision for rotating larger motors on a timed basis to prevent the motor shaft distorting under the effects of gravity is also available.

The MFS series product is developed based on a cycle-skip control method and variable frequency technique. The MFS control system generates six periodic triggering signals. At a certain frequency, the five anti-parallel connected power stacks are conducted one by one to follow the preset control strategy to apply a certain voltage and frequency to the motor. The motor is smoothly started from 1/4fe to 1fe and accelerates to the rated speed. 2-step operation is suitable for heavy load starting.

Featuring a LCD keypad and LED mimic for easy identification of the drive status, the starter features fully removable power stacks for ease of maintenance and 4 pump starting curves as standard.

The MFS reduces water hammer, site voltage fluctuations and energy consumption. Because of its multiple frequency operation, applications which would normally have proved difficult with traditional voltage source soft starter can now be easily solved, including motors with moderate or heavy loading at start.

The MFS series provides a flexible, adaptable, process enhancing and cost effective product to satisfy all your soft starter requirements.

Opening up a smart / green / high efficient power world

Technical Capacity Advanced power electronics test base

245 patented items, more than 10 software copyrights and has undertaken 23 national key research science projects

Full load testing centre

Overseas R&D institutions and technical co-operation with recognised universities

Services 24-hour service

Remote and onsite service to our customers

Free upgrade of software

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02 MFS Soft Starter – Technical Brochure

Quality Assurance Comprehensively established the

Quality Management System in line with ISO9001;2008

Passed the international certifications of German TUV and European CE-LVD

Professional PCB manufacturing centre

100% full voltage testing prior to delivery

Applications Industry: Metallurgy, mine, petroleum,

chemical, municipal, ships, etc.

Load: Fan, compressor, axial flow fan, pump, submersible pump, etc.

Special environment: High altitude area, mine drainage, mine explosion-proof, oilfield, vehicle-mounted.

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MFS Soft Starter – Technical Brochure 03

FeaturesWide range of applications

The MFS series are mainly used for standard three-phase synchronous and asynchronous motors. The applicable voltage is from 3.3kV to 13.8kV and the output power range is from 100kW to 50MW.

Advanced smooth starting without impact Combines the traditional phase shift voltage regulation technology without a change in the

hardware structure, variable frequency and stepless voltage regulation technology. The result of the motor soft starting is that the current and mechanical impacts caused by the motor and load could be completely avoided.

Flexible control of motor start and stop There is a range of motor start and stop functionality as follows; Start modes have 2 step

variable frequency starting, ramp voltage starting, ramp current starting, constant current starting. Stop modes contain free stop, soft stop and brake stop.

Comprehensive protection function of motor The MFS Soft starter has a built-in multifunctional motor protector that is implemented when

the motor is starting and running.

Advanced thyristor triggering and protection technologies The photoelectric triggering technique ensures simultaneous firing of all thyristors connected

in series. The thyristor pulse and dynamic measurement technology also helps to protect the safety of the motor.


Humanised safety design Photoelectric isolation technology is applied between high and low voltages to

intensify the safety, reliability and anti-interference performance. Delivering a low voltage pretesting function.

Rich communication Interface Industrial network interfaces such as Modbus, Profibus, Canbus and Ethernet are

provided to satisfy any automation requirements for different industrial applications.

Maintenance free design The MFS adopts advanced protection technology and high-redundant design techniques,

which can make it maintenance free and save maintenance cost.

Excellent electromagnetic compatibility The harmonic waves generated in staging are in compliance with international standard

(IEEE19-1992) and national standard (GB/E14529-93 Power Quality-Harmonics of Utility Grid), saving the installation of a filter. The electromagnetic compatibility complies with the relevant national standards.

Customised service Customised special design, such as an incoming supply isolator switch, local

compensation, multi-split, special dimension. Customised for special applications, such as low power, high power, super power, vehicle-mounted, ships, long distance transmission, coal mine explosion-proof and intrinsically safe.

Strong adaptability The MFS soft starter is suitable for power grid frequency fluctuation, generator power,

high altitude and varying ambient conditions.



PrincipleThe MV Soft Starter is connected in series between the MV power supply and the MV motor. By using thyristors in a phase angle control mode, reduced voltage control can be achieved.

Phase control makes it possible to gradually increase the motor terminal voltage from an initial set point up to the rated voltage level.

The related starting current and the starting torque can be optimally adjusted to the motor/load conditions.

NoteIf the motor current on start exceeds the current limit set by the user by more than 500% then the output voltage will increase on a linear scale to the rated voltage preset by the user.

Current limit startAdjustable range of limit current is:100-400%. FLA limit is only active during start up and not whilst the motor is running at full speed or on soft stop.

2 step variable frequency startMFS series product is developed based on a cycle-skip control method and variable frequency technique.

The MFS control system generates six periodic triggering signals. At a certain frequency, the five anti-parallel connected power stacks are conducted one by one to follow the preset control strategy to apply a certain voltage and frequency to the motor. The motor is smoothly started from 1/4fe to 1fe and accelerates to the rated speed. 2-step operation is suitable for heavy load starting.


Working Principle – Introduction to starting modesSoft stop• Deceleration, soft stop (ramp down time).

• For deceleration control of high friction load.

• User defined ramp down time by control of the motor voltage.

Soft curve• During soft starting, the peak torque of the motor

is equal to about 3 times the rated torque value. In pump application the above peak torque value may lead to high pipe pressure.

• MFS series soft starter provides a choice of four different start curves.

• Curve 0: Used to start lightly loaded motors.

• Curve 2: Standard curve (default). Apply to start light-load motor.

• Start curves 1 and 3 are optional user defined curves.

Stop curve• If a pump is stopped and is not under control from

a soft stop device, when the liquid level is high, the motor torque will quickly decrease below the load torque which will make the motor stop suddenly. This situation can be eliminated by using the soft stop function of the MFS unit to smoothly reduce the speed of the pump motor to zero, preventing “water hammer”.

• MFS series soft starter provides four soft stop curves.

• Curve 0: Standard curve (default) free stop.

• Curve 1, 2 and 3 are user defined according to the actual pump characteristics, you can choose the soft stop curve, also you can select other stop curves. The adjustable ramp down times are available between 1– 30 seconds.

MFS Series Extended Type MV Soft Starter

Rate voltage: 3-13.8kV (-15% to +10%)

Power range: 100kW—5000kW

Quantity of thyristors: 18 SCRs; 24 SCRs; 30 SCRs (model dependent)

Control supply voltage: 110V AC/DC or 220V AC/DC, 2000VA (customer supply)

Overload capacity: 400% full-load current of the motor / 60s 500% full-load current of the motor / 30s

Bypass vacuum contactor is within the normal scope of supply, line vacuum contactor, fuses and load break switches are optional.


~ ~ ~

KM1

KM0

M M MM.V. POWER SUPPLY

SENSOR

E-PT

U V WL1 L2 L3

SOFT STARTER

E-1 TYPEE-2 TYPEE-3 TYPE

CABINET

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CONTROLLER CONTROLLER CONTROLLER

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KM0


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KM0


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KM0

M.V. POWER SUPPLY

SENSOR

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U V WL1 L2 L3


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HMIHMI HMI

KM1

M.V. POWER SUPPLY

SENSOR

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U V WL1 L2 L3


POWER STACK

MOTOR





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FRONT VIEW WITH DOORS BACK VIEW WITH DOORS

INTERNAL SIDE VIEW

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Three phase voltage measurement signal

Three phase current measurement signal





Feedback signal

Trigger signal

Control power

Feedback signal

Trigger signal

Control power

Line vacuum contactor (optional)

Bypass vacuum contactor

Feedback signal

Trigger signal

Control power

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DIGITAL CONTROLLER

DIGITAL CONTROLLER

DIGITAL CONTROLLER

EXTENDED TYPE SOFT STARTER

PTCT

HIGH POWER TYPE SOFT STARTER


Bypass contactor

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Digital controllerThe Digital controller is formed of three main areas, trigger control module, peripheral control module and the HMI.

HMI The Electronic Potential Transformer (EPT) converts the three phase Medium Voltage supply to low voltage so that it can be displayed on the HMI.

Sensors are fitted on all three phases to monitor the current and can be displayed on the HMI.

Both the EPT and current sensors used within the MFS soft starter are of high quality and accuracy. They offer a safe, reliable and convenient to use option to monitor the voltage and current.

The HMI is completely sealed and is resistant to dust, moisture, vibration and shock.

Power Units There are three independent power units in each MFS module.

Each power unit contains the thyristor, power card, control card and the relevant protection devices.

The design of these power units allows them to be quickly and easily replaced in the unlikely event of a fault.

Bypass contactor A vacuum bypass contactor, controlled by the MFS soft starter, will be activated when the motor has reached full speed, returning the motor to direct on line operation.

The low power MFS soft starter (<630A) has a built-in bypass vacuum contactor.

The high power MFS soft starter (>630A) requires the bypass vacuum contactor to be specified, as it is optional. Additional consideration is necessary by the user regarding the operational usage of the vacuum circuit breaker as a bypass switch.

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MFS Series High Power Type MV Soft Starter

Rate voltage: 6-13.8kV (-15% to +10%)

Power range: 4000kW-10000kW (6kV) / 5000kW-10000kW (10kV)

Quantity of thyristors: 24 SCRs; 30 SCRs; 42 SCRs (model dependent)

Control supply voltage: 110V AC/DC or 220V AC/DC, 2000VA (customer supply)

Overload capacity: 400% full-load current of the motor / 60s 500% full-load current of the motor / 30s

Bypass contactor is optional and needs to be specified

CONTROLLER


SENSOR

C1

L1 L2 L3

MV POWER SUPPLY MOTOR

U V W

SOFT STARTERCABINET

POWER STACK

M

E-PT

HMI



MFS Series High Power Type MV Soft Starter

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1540

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1050

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INTERNAL SIDE VIEW

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R55R35

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4-R6.5

20

7001050

1000

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8298

6.96

8

1200

210

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17510

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14501540

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Incoming

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INTERNAL SIDE VIEW

Incoming

Outgoing

Incoming

FRONT

BACK

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OutgoingIncoming

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C1

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L1 L2 L3

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INCOMING OUTGOING

BASIC TYPE SOFT STARTER

DIGITAL CONTROLLER

DIGITAL CONTROLLER

DIGITAL CONTROLLER

EXTENDED TYPE SOFT STARTER

PTCT

HIGH POWER TYPE SOFT STARTER


Bypass contactor

2370

1196

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R55

1600

15401450

1600

2370

650

202

R7.5

4-R6.5

13801600

30

1390

92

122

1000

1000

200

FRONT VIEW WITH DOORS INTERNAL SIDE VIEW

CABINET FOUNDATION

CABINET FOUNDATION

CABINET FOUNDATION

FRONT

BACK

LEFT RIGHT

BACK VIEW WITH DOORS

Incoming

IncomingOutgoing

Outgoing


MFS Series Technical Applications to start several motors

M M M M

M1 M2 M3 M4

AC 10kV

MFS TO START SEVERAL MOTORS – UP TO 4 MOTORS SEQUENTIALLY

MFS TO START SEVERAL MOTORS SUPPLIED FROM DIFFERENT BUS BARS

KM1

MFS

QF1 QF2 QF3 QF4 QF5

KM2 KM3

50Hz

1CB CB1

MFS

C1 C2 C3 C4

2CB CB2 3CB CB3 4CB CB4

10kV BUS BAR 1 BUS BAR 2 BUS BAR 3 BUS BAR 4

KM4

The MFS series can be used in various configurations to start several motors, for example, up to four motors sequentially or motors that are supplied from different Bus bars.


Technical Parameters

SUPPLY DATA

Main voltage 3 phase, AC 2.3kV/3kV/3.3kV/4.16kV/6kV/6.6kV/10kV/11kV/13.8kV (-15% to +10%)

Power range 100kW – 10000kW

Overload capacity 400% full-load current of the motor/60s500% full-load current of the motor/30s

Frequency 50Hz/60Hz ± 2Hz (customised)

ENVIRONMENTAL

Applicable place Indoor, non-explosive or corrosive gas, low dust

Ambient operating temperature 0°C - 40°C (optional - 20°C to 0°C with heaters)

Humidity 5% - 95%, non-condensing

Altitude < 2000m

STARTING DATA

Start current < 4 rated current of motor (adjustable)

Start time 60s (adjustable)

Start times 6 times/hour (20°C)

CONTROL

Control supply voltage 110V AC/DC or 220V AC/DC, 2000VA (customer supply)

Power circuit 18 thyristors, 24 thyristors, 30 thyristors, 36 thyristors, 42 thyristors (model dependent)

Communication protocol Modbus RTU, Profibus (option), Ethernet (option)

Communication interface RS-485

Event history It can display continuous recording 100 recent events of all kinds of action, such as start, stop, alarm, trip, external fault, etc.

LCD display 3.5"

Cooling Natural cooling

Ingress protection of enclosure IP4X

Painting RAL7035 (customised)

STANDARDS

The MFS Soft Starter is fully EU CompliantIEC EN61800-3: 2004IEC EN61800-5-1: 2007


PROTECTION PARAMETER

Over-current protectionOver-current alarm and trip setting range: 100 – 300% of full-load current Over-current trip time: 1 - 20 seconds Anti time-limit function

Under-current protection Under-current alarm and trip setting range: 10 - 90% of full-load current Over-current trip time: 1 - 60 seconds

Over-voltage protection Over-voltage alarm and trip setting range: 100 - 150% of full-load current Over-current trip time: 0.1 - 60 seconds

Under-voltage protection Under-voltage alarm and trip setting range: 5 - 90% of full-load current Over-current trip time: 0.1 - 60 seconds

Motor short-circuit protection Over-current trip setting range: 300 – 800% of full-load current Short-current trip time: 0 - 3 seconds

Motor locked-rotor protection Over-current trip setting range: 300 – 1000% of full-load current Locked- rotor trip time: 1 - 10 seconds

Phase unbalanced protection Phase unbalance alarm and trip setting range: 5 - 30% of optional 2 phases unbalance alarm and trip setting time: 1 - 20 seconds

Load phase-loss protection Trip value: 10 – 90% FLATrip time: 1 – 60 seconds

Power factor protection Alarm and trip setting range: 0.1 – 1.0 Alarm and trip setting time: 1 – 20 seconds

Starting overtime protection Starting time setting range: 1 – 60 seconds

Start interval protection Setting range: 1 – 6 times Interval of each task: 0 – 60 minutes

NOMINAL VOLTAGE CODE CONTROL VOLTAGE CODE

A 3kV B 3.3kV C 4.16kV D 6.0kV A single phase 110 – 120V AC B single phase 220 – 240 VAC

E 6.6kV F 10kV G 11kV H 13.8kV C single phase 110 – 120V DC D single phase 220 – 240 VDC

Identification code


Model Selection

ORDER NO. VOLTAGE POWER WEIGHT REFERENCE TYPE REMARK

MFS-A(S)-B200B-I 3.3kV 200kW 800kg E Type Low Power









MFS-A(S)-E500B-I 6.6kV 500kW 800kg E Type Low Power
























ORDER NUMBER VOLTAGE POWER WEIGHT REFERENCE TYPE REMARK

MFS-A(S)-E4500B-I 6.6kV 4500kW 1200kg H Type High Power






MFS-A(S)-G500B-I 11kV 500kW 800kg E Type Low Power






















MFS-A(S)-G5500B-I 11kV 5500kW 1200kg H Type High Power





10000kW-50000kWFor these high power starters please contact Severn Drives & Energy

01 Severn Glocon Group plc Gloucester England UK Severn Drives & Energy Gloucester England UK Mars Valve UK Gloucester England UK Ionex SG Nailsworth England UK L.B.Bentley Stroud England UK02 Severn Subsea Technologies Redruth England UK03 Severn Utilities Valves Rugby England UK

04 Severn Unival Brighouse England UK

Severn Leeds Brighouse England UK05 Severn Ball Valves Aberdeen Scotland UK06 Severn Norway Bergen Norway07 Severn Glocon Atlantic Canada Newfoundland Canada Falcon SG Limited Newfoundland Canada08 Severn Glocon Calgary Canada

09 Severn Glocon Houston Texas USA10 Severn Glocon Rio Brazil11 Borkit SG Atyrau Kazakhstan12 Severn Valve Solutions Basra Iraq13 Severn Glocon Saudi Arabia14 Severn Glocon Doha Qatar15 QTRCO SG Dubai

16 Severn Glocon FZE Dubai17 Severn Glocon India Chennai India18 Severn Glocon Kuala Lumpur Malaysia19 Severn Glocon Australia Perth Australia20 Severn Glocon Beijing China21 Severn Glocon Seoul Korea22 Severn Glocon Tokyo Japan

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PRECISION I RELIABILITY I PERFORMANCE

[email protected] www.severnglocon.com

The Severn Glocon Group policy is one of continuous improvement and we reserve the right to modify these specification details without notice. Brochure design by verycreativepeople.co.uk

RELIABLE GREEN POWER SOLUTIONS

UK Olympus Park Quedgeley Gloucester Gloucestershire GL2 4NF England

For MENA/CASPIAN Area PO BOX 18665 Jebel Ali Freezone Dubai

T. +971 (0)4802 8900 F. +971 (0)4880 8820 [email protected]

T. +44 (0)845 223 2040 F. +44 (0)845 223 2041 [email protected] www.severnde.co.uk

Documents

RELIABLE GREEN POWER SOLUTIONS 06 05 04 03 07 02 01 11 08 … · 2017. 2. 1. · controller controller controller power stack motor km1 km0 m.v. power supply sensor l1 l2 l3 u v w