Sub A Fdr A1 East Housing Relay.pdf
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- Solicitation number
- FA466126R0010
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This is a Record of Protective Relay Test Results documenting the performance validation of a GE SR 760 multifunction microprocessor relay (Serial Number B70272) at Dyess Air Force Base, Texas. The test was performed by CEMIRT on August 24, 2016, using a Megger MPRT 8430 relay test set and conducted by Mr. Willet and SSgt Miron.
The relay was configured with Phase Time Overcurrent (OC1) settings of 0.30 amperes pickup at 1.20 multiplier with an extremely inverse time curve, and Neutral Time OC1 settings of 0.15 amperes pickup at 1.20 multiplier. All pickup tests for phases A, B, and C demonstrated actual pickup values of 1.50 amperes, matching expected values within acceptable ranges (minimum 1.42 amps, maximum 1.58 amps), with all three phases passing. Time overcurrent testing across all three phases at multiples of 2.00x, 3.00x, and 5.00x tap showed actual response times closely aligned with expected values and within acceptable tolerances. Neutral pickup testing yielded an actual value of 0.76 amperes against an expected 0.75 amperes (range 0.71–0.80 amps). Neutral time overcurrent testing at 3.00x, 4.00x, and 5.00x multiples confirmed times within specification ranges. All test results across all parameters and phases passed acceptance criteria.
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Record of Protective Relay Test Results Performed By:
CEMIRT
Base: Dyess AFB TX Relay: Multifunction Substation: Alpha Device: Microprocessor Feeder: A1 East Housing Manufacturer: GE Tested By: Mr. Willet/SSgt Miron Inst. Bklt: GEK-86132 Date Tested: 08/24/2016 Relay Test Set: Megger MPRT 8430
Setting: Value: Description:
RID 1 CEMIRT Relay Identifier Circuit Designator A1 Circuit Identifier Model SR 760 MFG Model Type Serial Number B70272 MFG Serial Number Phase Time OC1 Pickup 0.30 Pickup Current x5 Curve Extremely Inverse Time Curve Shape Multiplier 1.20 Time Curve Multiplier Neutral Time OC1 Pickup 0.15 Pickup Current x5 Curve Extremely Inverse Time Overcurrent Curve Multiplier 1.20 Time Curve Multiplier
Relay 1: A-Phase Pickup Test
Actual Pickup Expected Pickup Min Range Max Range Pass/Fail (Amps) (Amps) (Amps) (Amps) (Result)
1.50 1.50 1.42 1.58 Pass
Relay 1: B-Phase Pickup Test
Relay 1: C-Phase Pickup Test
CEMIRT
Base: Dyess AFB TX Relay: Multifunction Substation: Alpha Device: Microprocessor Feeder: A1 East Housing Manufacturer: GE
Relay 1: A-Phase Time Overcurrent Test
Multiple Actual Time Expected Time Min Range Max Range Pass/Fail (X Tap) (Seconds) (Seconds) (Seconds) (Seconds) (Results)
2.00 2.11 2.09 1.99 2.20 Pass
3.00 0.80 0.79 0.75 0.83 Pass
5.00 0.29 0.30 0.28 0.31 Pass
CEMIRT
Base: Dyess AFB TX Relay: Multifunction Substation: Alpha Device: Microprocessor Feeder: A1 East Housing Manufacturer: GE
Relay 1: B-Phase Time Overcurrent Test
2.00 2.10 2.09 1.99 2.20 Pass
3.00 0.81 0.79 0.75 0.83 Pass
5.00 0.31 0.30 0.28 0.31 Pass
CEMIRT
Base: Dyess AFB TX Relay: Multifunction Substation: Alpha Device: Microprocessor Feeder: A1 East Housing Manufacturer: GE
Relay 1: C-Phase Time Overcurrent Test
2.00 2.12 2.09 1.99 2.20 Pass
3.00 0.78 0.79 0.75 0.83 Pass
CEMIRT
Base: Dyess AFB TX Relay: Multifunction Substation: Alpha Device: Microprocessor Feeder: A1 East Housing Manufacturer: GE
Relay 1: Neutral Pickup Test
0.76 0.75 0.71 0.80 Pass
Relay 1: Neutral Time Overcurrent Test
3.00 0.78 0.79 0.75 0.83 Pass
4.00 0.46 0.44 0.42 0.46 Pass
File details come from the government source that posted it. Updated .