Industrial Motor Solutions SEL 710

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Available Data for SEL-710 Retrofit

Motor Data Motor horsepower: 2700 hp

Rated voltage: 4000 V

Full load amperes (FLA): 359 A

Service factor: 1.15

Locked rotor current: 2334 A

Hot stall time: 18 seconds

Overload time at 2 per unit (pu): unknown

System Data System phase rotation: ABC

Phase current transformer (CT) ratio: 500/5

Ground CT ratio: 50/5 (zero-sequence connection)

Phase potential transformer (PT) ratio: 4200/120

Phase PT connection: open delta

Maximum bus fault: 30841 A

Maximum ground fault: 400 A

Contactor interrupting rating: 720 A

Fuse: CLF 38R

Other Application Information Contactor to trip on: Overload

Unbalance Ground overcurrent Phase rotation Load jam Resistance temperature detector (RTD) Acceleration Lockouts Single phase


Solutions

SEL-710 Main Settings

Identifier UNIT ID LINE 1 (16 characters) RID := NAT GAS COMP A

UNIT ID LINE 2 (16 characters) TID := I-44

Configuration PHASE ROTATION (ABC, ACB) PHROT := ABC

PHASE CT RATIO (1 to 5000) CTR1 := 100

MOTOR FLA (0.20 to 5000.00 A) FLA1 := 359.00

TWO SPEED ENABLE (Y, N) E2SPEED := N

NEUTRAL CT RATIO (1 to 2000) CTRN := 10

PHASE PT RATIO (1.00 to 250.00) PTR := 35.00

LINE VOLTAGE (100 to 30000 V) VNOM := 4160

XFMR CONNECTION (WYE, DELTA) DELTA_Y := DELTA

SINGLE V INPUT (Y, N) SINGLEV := N

Thermal Overload Settings: Function 49T

Existing Relay Data Relay type: GE Multilin SR 269+

Minimum pickup: 1.25 full load current (FLC)

Custom curve enabled: no

Selected overload curve: 3

Initial start thermal capacity: 40 percent

Start inhibit enabled: no

FLC thermal capacity reduction: 15 percent

Thermal capacity used (TCU) alarm level: off

Defeat learned cool time: yes

Running cool time: 15 minutes

Stopped cool time: 30 minutes

Defeat RTD thermal memory input: yes


Your SEL-710 Relay Settings OVERLOAD ENABLE (Y, N) E49MOTOR := Y

FULL LOAD SLIP (OFF, 0.0010 to 0.1000 pu) FLS := OFF

THERMAL METHOD (RATING, RATING_1, CURVE) SETMETH := RATING

OL RESET LEVEL (10 to 99 %TCU) 49RSTP := 75

SERVICE FACTOR (1.01 to 1.50) SF := 1.15

MOTOR LRA (2.50 to 12.00 xFLA) LRA1 := 6.50

LOCKD RTR TIME 1 (1.00 to 600.00 seconds) LRTHOT1 := 6.00

ACCEL FACTOR (0.10 to 1.50) TD1 := 1.00

STATOR TC (AUTO, 1.00 to 2000.00 minutes) RTC1 := AUTO

OL WARN LEVEL (OFF, 50 to 99 %TCU) TCAPU := OFF

START INH. LEVEL (OFF, 1 to 99 %TCU) TCSTART := 40

LEARN TCSTART? (Y, N) TCLRNEN := N

STOP COOL TIME (1.00 to 6000.00 minutes) COOLTIME := 61.00

LEARN COOLTIME? (Y, N) COOLEN := N

OL RTD BIASING? (Y, N) ETHMBIAS := N

FLS: This is not a high-inertia motor and therefore does not require this option for starting.

SETMETH: Use the rating method for a retrofit.

49RSTP: This setting maintains a 49T lockout until the stator thermal capacity is low enough to allow for a successful start. Set 49RSTP < 100/SF2.

LRA1: 2334 A/359 A = 6.5

LRTHOT1: Although the coordination curve provided a hot stall time of 18 seconds, the operate time of Curve 3 in the SR 269+ at the LRA is 6 seconds. Therefore, to maintain similarity to the installed settings that have been proven over the years, 6 seconds is selected for this setting.

TD1: This setting should always be 1, unless you know that the load will accelerate in less than the locked rotor time.

RTC1: Because no time constant data for the motor are available, set to AUTO. The relay calculates the motor RTC as follows: RTC = 1.2 6/(60 Ln((6.52 0.81 1.152)/6.52 1.152)) = 20 minutes.

TCAPU: The TCU alarm is turned off in the SR 269+, so turn it off in the SEL-710 as well. Normally, this should be set as TCAPU > 100/SF2.

TCSTART: This defines the rotor thermal capacity required for a successful start. The relay prevents a motor start until the rotor thermal capacity is less than 100 TCSTART. From the SR 269+ setting for initial start thermal capacity, set this to 40 percent.

TCLRNEN: The SR 269+ setting for start inhibit enabled allows the relay to learn the thermal capacity required to start the motor and set the initial start thermal capacity setting in the relay. Because this is set to no in the SR 269+, the TCLRNEN setting in the SEL-710 should be set to N.


COOLTIME: Although the SR 269+ is set with a running cool time of 15 minutes and a stopped cool time of 30 minutes, the SEL-710 requires that COOLTIME > 3 RTC. Therefore, set COOLTIME = 3 20 + 1 = 61 minutes.

COOLEN: The SR 269+ setting for defeat learned cool time is set to yes.

ETHMBIAS: The SR 269+ setting for defeat RTD thermal memory input is set to yes.

Note: The SR 269+ setting for FLC thermal capacity reduction defines the thermal capacity the element drops to when the current equals the FLC. This setting is not required in the SEL-710, which accurately tracks temperature at and below the FLC.

Immediate Overload Alarm Settings: Function 50P1


Immediate overload level: 1.50 FLC

Alarm time delay: 0 seconds

Your SEL-710 Relay Settings PH OC WARN LVL (OFF, 0.10 to 20.00 xFLA) 50P2P := 1.50

PH OC WARN DLAY (0.00 to 5.00 seconds) 50P2D := 0.00

Neutral Overcurrent Settings: Function 50N1


Element name: 50G

Minimum alarm pickup: 0.6 CT

Alarm time delay: 1 second

Minimum trip pickup: 1.0 CT

Trip time delay: 0.5 seconds

Your SEL-710 Relay Settings NEUT OC TRIP LVL (OFF, 0.01 to 650.00 A) 50N1P := 50.00

NEU OC TRIP DLAY (0.00 to 5.00 seconds) 50N1D := 0.50

NEUT OC WARN LVL (OFF, 0.01 to 650.00 A) 50N2P := 30.00

NEU OC WARN DLAY (0.00 to 120.00 seconds) 50N2D := 1.00

50N1P: 1.0 50 = 50 A primary

50N2P: 0.6 50 = 30 A primary


Load Jam Settings: Function LJ


Mechanical jam alarm level: off

Rapid/mechanical jam trip level: 4.0 FLC

Rapid trip delay: 4 seconds

Your SEL-710 Relay Settings JAM TRIP LEVEL (OFF, 1.00 to 6.00 xFLA) LJTPU := 4.00

JAM TRIP DELAY (0.00 to 120.00 seconds) LJTDLY := 4.00

JAM WARN LEVEL (OFF, 1.00 to 6.00 xFLA) LJAPU := OFF

Current Unbalance Settings: Function 46UB


Alarm minimum pickup: 15 percent

Alarm time delay: 5 seconds

Trip minimum pickup: 20 percent

Trip time delay: 5 seconds

Your SEL-710 Relay Settings CI TRIP LEVEL (OFF, 5 to 80 percent) 46UBT := 20

CI TRIP DELAY (0.00 to 240.00 seconds) 46UBTD := 5.00

CI WARN LEVEL (OFF, 5 to 80 percent) 46ABT := 15

CI WARN DELAY (0.00 to 240.00 seconds) 46ABTD := 5.00


Starting Settings


Acceleration time: 10 seconds

Starts per hour: 3

Single-shot restart enabled: no

Special external reset enabled: no

Backspin timer: off

Time between starts: off

Defeat speed switch input: yes

Your SEL-710 Relay Settings START MOTOR TIME (OFF, 1.00 to 240.00 seconds) START_T := 10.00

STAR-DELTA ENABL (Y, N) ESTAR_D := N

STARTS/HR. (OFF, 1 to 15) MAXSTART := 3

MIN. OFF TIME (OFF, 1.00 to 150.00 minutes) TBSDLY := OFF

RESTART BLK TIME (OFF, 1.00 to 1500.00 minutes) ABSDLY := OFF

SS TRIP DELAY (OFF, 1.00 to 240.00 seconds) SPDSDLYT := OFF

SS WARN DELAY (OFF, 1.00 to 240.00 seconds) SPDSDLYA := OFF

Phase Reversal Settings: Function 47T


Enable voltage phase reversal: no

Your SEL-710 Relay Settings PH REV. ENABLE (Y, N) E47T := N


RTD Settings: Function 49RTD


Sensor type: 100 platinum

RTDs connected: yes

RTD message display: Celsius

Number of stator RTDs: 3

RTD 1 alarm level: 130C

RTD 1 high alarm level: off

RTD 1 trip level: 140C











RTDs 4, 6, 9, and 10 are not used.

RTDs 7 and 8 are bearing RTDs.

Enable stator RTD voting: yes


Your SEL-710 Relay Settings RTD ENABLE (INT, EXT, NONE) E49RTD := INT

RTD1 LOCATION (OFF, WDG, BRG, AMB, OTH) RTD1LOC := WDG

RTD1 TYPE (PT100, NI100, NI120, CU10) RTD1TY := PT100

RTD1 TRIP LEVEL (OFF, 1 to 250C) TRTMP1 := 140

RTD1 WARN LEVEL (OFF, 1 to 250C) ALTMP1 := 130









RTD7 LOCATION (OFF, WDG, BRG, AMB, OTH) RTD7LOC := BRG




RTD8 LOCATION (OFF, WDG, BRG, AMB, OTH) RTD8LOC := BRG




WIND TRIP VOTING (Y, N) EWDGV := Y

BEAR TRIP VOTING (Y, N) EBRGV := Y

EBRGV: Because the SR 269+ does not have an option for specifying bearing RTDs or voting for them, follow the same pattern as the stator winding RTDs.


Analog Output


Parameter: motor load as a percent of full load

Scale: 4 to 20 mA

Motor load full scale: 100 percent

Your SEL-710 Relay Settings AOx01 ANALOG QTY (OFF, 1 analog quantity) AOx01AQ := MLOAD

AOx01 TYPE (I, V) AOx01TYP := I

AOx01 AQTY LOW (2147483647 to +2147483647) AOx01AQL := 0.000

AOx01 AQTY HI (2147483647 to +2147483647) AOx01AQH := 1.000

AOx01 LO OUT VAL (20.480 to +20.480 mA) AOx01L := 4.000

AOx01 HI OUT VAL (20.480 to +20.480 mA) AOx01H := 20.000

AOx01AQ: Select the MLOAD analog quantity from the table in Appendix J of the SEL-710 Instruction Manual. This gives the motor load in per unit of FLA.

AOx01TYP: You need a current-based analog output.

AOx01AQL: The lower end of the range is 0.000 pu.

AOx01AQH: The upper end of the range is 1.000 pu.

AOx01L: The lower end of the output current range is 4.000 mA.

AOx01H: The upper end of the output current range is 20.000 mA.

Contactor Trip, Alarm, and Output Logic for the SEL-710


Relay alarm latch code: 1

VALUE TRIP ALARM AUX. 1 AUX. 2

1 Latched Unlatched Unlatched Latched

2 or 3 Latched Latched Unlatched Latched

4 or 5 Latched Unlatched Latched Latched

6 or 7 Latched Latched Latched Latched

(Latched = manual reset; unlatched = automatic reset)


Relay fail-safe code: 1

VALUE TRIP ALARM AUX. 1 AUX. 2

1 FS NFS NFS FS

2 NFS FS NFS FS

3 FS FS NFS FS

4 NFS NFS FS FS

5 FS NFS FS FS

6 NFS FS FS FS

7 FS FS FS FS

8 NFS NFS NFS FS

(FS = fail-safe; NFS = nonfail-safe)

Overload: trip

Unbalance: trip

Rapid trip: trip

Stator RTD: trip

RTD: trip

Acceleration: trip

Inhibit lockouts: trip

Single phase: trip

Overload warning: alarm

Ground fault: alarm

Unbalance: alarm

Stator RTD: alarm

Stator RTD high: no

RTD: alarm

RTD high: no

No sensor: alarm

Meter communications: alarm

Self-test fail: alarm


Your SEL-710 Relay Settings TRIP EQUATION (SELOGIC control equation) TR := 49T OR 50N1T OR JAMTRIP OR 46UBT

OR BRGTRIP OR WDGTRIP OR SMTRIP

UNLATCH TRIP EQN (SELOGIC control equation) ULTRIP := TRGTR

OUT101 FAIL-SAFE (Y, N) OUT101FS := N

OUT101 := HALARM OR SALARM OR 50P2P OR

50N2P OR 46UBA OR BRGALRM OR

WDGALRM OR RTDFLT

OUT103 FAIL-SAFE (Y, N) OUT103FS := Y

OUT103 := TRIP

TR: The inhibit lockout functions are included in the trip logic by default and do not need to be included in the TR equation, as shown in the following trip logic from the SEL-710 Instruction Manual.

ULTRIP: Relay Word bit TRGTR asserts when the {TARGET RESET} pushbutton on the front panel is manually pressed or the command is issued remotely via supervisory control and data acquisition (SCADA).

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Industrial Motor Solutions SEL 710