GE Industrial Solutions Entellisys System Test Kit - Manual (Page 35)

System Test Kit 36
Test results
Under Frequency Settings Under Frequency settings will be displayed depending on the settings from
CCPU.
Phase Loss settings Phase Loss settings will be displayed depending on the settings from CCPU.
Power Reversal Power Reversal settings will be displayed depending on the settings from
CCPU.
High Current High Current Settings will be displayed depending on the settings from CCPU.
Pre-Defined Settings Depending on the current Messenger settings, Selected Level, Phase selected,
Frequency or Multiplier value IA, IB, IC, IN, VA, VB, VC will be calculated and
displayed on the screen.
Table 1-10 Test results
Time Stamp Table Once the test is performed, it displays the time stamping of circuit breaker
status and the device that actuated the circuit breaker (Flux Shifter or Breaker
Open).
Expected Trip Time Expected trip time automatically calculated from the pickup, delay band
settings, and circuit breaker clearing time.
Observed Trip Time Observed trip time displayed after the test is performed.
Test Summary LED Specifies the test results by comparing the observed trip time with the
expected trip time.
Green Successful (within +/– 20% of expected time)
Red Unsuccessful
Gray Test Aborted
Table 1-11 Default values for pre-defined relay protection tests
Type of Test Prefault Fault Post Fault
Over Frequency System Frequency Pickup *1.01 System Frequency
Under Frequency System Frequency Pickup * 0.99 System Frequency
Overvoltage 100% of PT Pickup * 1.05 96% of PT
Undervoltage 100% of PT Pickup * 0.95 100% of PT
Phase Loss 0% Pickup + 1% 0%
Power Reversal 10 KW Positive Power Pickup * 1.1 Reverse Power 10 KW Positive Power
High Current Pickup * 0.5 Pickup * 1.1 Pickup * 0.5
Table 1-9 Selections and controls