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2 PRODUCT DESCRIPTION
2.3SPECIFICATIONSSPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
The operating times include the activation time of a trip rated form-A output contact unless otherwise indicated.
FlexLogic operands of a given element are 4 ms faster. Take this into account when using FlexLogic to interconnect
with other protection or control elements of the relay, building FlexLogic equations, or interfacing with other IEDs or
NOTE
power system devices via communications or different output contacts. If not specified, the operate times given
here are for a 60 Hz system at nominal system frequency. Operate times for a 50 Hz system are 1.2 times longer.
THERMAL MODEL
Thermal overload curves: standard curve (Motor), FlexCurve™,
standard curve (Motor) with voltage
dependent function, IEC curve
Standard curve (motor) time multiplier: 0.00 to 16.00 in steps of
0.01
Motor curve time multiplier: 0.00 to 16.00 in steps of 0.01
FlexCurve curve time multiplier: 0.00 to 600.00 in steps of 0.01
IEC curve time constant: 0 to 1000 in steps of 1
Thermal overload pickup: pu = overload factor FLA
Overload factor (OF):
1.00 to 1.50 in steps of 0.01
Motor full load current (FLA): 0.050 to 1.000 pu in steps of 0.001
Standard overload curve, cutoff effect:
TD
2.2116623
------------------------------------------------------------------------------------------------------------------------------------------------
t
=
trip
I
2
motor
------------- - 1
0.02530337
–
FLA
Standard overload curve, shift effect:
TD
--------------------------------------------------------------------------------------------------------------------------------------------------------------------
t
=
trip
I
motor
0.02530337
------------------------ - 1
–
OF
FLA
Motor rated voltage:
1 to 50000 V in steps of 1
Thermal model biasing: current unbalance, RTDs
Thermal model update rate: 1 power cycle
Stopped/running time cool constants: 1 to 65000 min. in steps of 1
Stopped/running time cool constants decay: exponential
Hot/cold safe stall ratio: 0.01 to 1.00 in steps of 0.01
Current accuracy:
per phase current inputs
Current source:
true RMS
Timer accuracy:
±100 ms or ±2%, whichever is greater
Timer accuracy for voltage dependent overload:
±100 ms or ±4%, whichever is greater
STATOR DIFFERENTIAL
Pickup:
0.050 to 1.00 pu in steps of 0.01
Slope 1 and 2:
1 to 100% in steps of 1
Break 1:
1.00 to 1.50 pu in steps of 0.01
Break 2:
1.50 to 30.00 pu in steps of 0.01
Operate time:
<¾ cycle at I
GE Multilin
I
motor
-------------- 1
0.05054758
+
–
FLA
2.2116623
2
I
motor
0.05054758
------------------------ - 1
+
–
OF
FLA
> 5 × pickup
diff
M60 Motor Protection System
2.3.1 PROTECTION ELEMENTS
GROUND TOC
Current:
Phasor or RMS
Pickup level:
0.000 to 30.000 pu in steps of 0.001
Dropout level:
97% to 98% of pickup
Level accuracy:
for 0.1 to 2.0 CT:
±0.5% of reading or ±0.4% of rated
(whichever is greater)
for > 2.0 CT:
±1.5% of reading > 2.0 CT rating
Curve shapes:
IEEE Moderately/Very/Extremely
Inverse; IEC (and BS) A/B/C and Short
Inverse; GE IAC Inverse, Short/Very/
Extremely Inverse; I
(programmable); Definite Time (0.01 s
base curve)
Curve multiplier:
Time Dial = 0.00 to 600.00 in steps of
0.01
Reset type:
Instantaneous/Timed (per IEEE)
Curve timing accuracy
at 1.03 to 20 x pickup:
±3.5% of operate time or ±½ cycle
(whichever is greater) from pickup to
operate
PHASE/NEUTRAL/GROUND IOC
Current:
Phasor only
Pickup level:
0.000 to 30.000 pu in steps of 0.001
Dropout level:
97 to 98% of pickup
Level accuracy:
0.1 to 2.0 CT rating: ±0.5% of reading or ±0.4% of rated
(whichever is greater)
> 2.0 CT rating
±1.5% of reading
Overreach:
<2%
Pickup delay:
0.00 to 600.00 s in steps of 0.01
Reset delay:
0.00 to 600.00 s in steps of 0.01
<16 ms at 3 pickup at 60 Hz
Operate time:
(Phase/Ground IOC)
<20 ms at 3 pickup at 60 Hz
(Neutral IOC)
Timer accuracy:
±3% of operate time or ±1/4 cycle
(whichever is greater)
2.3 SPECIFICATIONS
2
2
t; FlexCurves™
2-17
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