Specifications; Protection Elements - GE M60 Instruction Manual

SPECIFICATIONS

Other advanced UR order code options are available to support IEC 61850 Ed2.0 (including fast GOOSE, MMS server, 61850
services, ICD/CID/IID files, and so on), IEEE 1588 (IEEE C37.238 power profile) based time synchronization, CyberSentry
(advanced cyber security), the Parallel Redundancy Protocol (PRP), IEC 60870-5-103, and so on.
2.5 Specifications
2
Specifications are subject to change without notice.

2.5.1 Protection elements

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 intelligent electronic
devices (IEDs) or 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) time multiplier: 0.00 to 16.00 in steps of 0.01
Motor curve time multiplier:
FlexCurve curve time multiplier:
IEC curve time constant:
Thermal overload pickup:
Overload factor (OF):
Motor full load current (FLA):
Standard overload curve, cutoff effect:
Standard overload curve, shift effect:
Motor rated voltage:
Thermal model biasing:
Thermal model update rate:
Thermal capacity level accuracy
Stopped/running time cool constants:
Stopped/running time cool constants decay: exponential
Hot/cold safe stall ratio:
Current accuracy:
Current source:
Timer accuracy:
Timer accuracy for voltage dependent overload:
STATOR DIFFERENTIAL
Pickup:
Slope 1 and 2:
Break 1:
2-20
standard curve (Motor), FlexCurve™, standard curve (Motor) with voltage dependent function,
IEC curve
0.00 to 16.00 in steps of 0.01
0.00 to 600.00 in steps of 0.01
0 to 1000 in steps of 1
pu = overload factor × FLA
1.00 to 1.50 in steps of 0.01
0.050 to 1.000 pu in steps of 0.001
1 to 50000 V in steps of 1
current unbalance, RTDs
2 power cycles
±1%
1 to 65000 min. in steps of 1
0.01 to 1.00 in steps of 0.01
per phase current inputs
true RMS
±100 ms or ±2%, whichever is greater
±100 ms or ±4%, whichever is greater
0.050 to 1.00 pu in steps of 0.01
1 to 100% in steps of 1
1.00 to 1.50 pu in steps of 0.01
CHAPTER 2: PRODUCT DESCRIPTION
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL