back) to allow testing without flashover or tracking. Cables shall not be connected to other equipment while under test. 2. Perform Insulation-Resistance Test. Test all cables with respect to ground and adjacent cables. All adjacent cables shall be grounded during testing. a. Apply test voltage for a period sufficient to stabilize output voltage and insulation resistance measurement. b. Test data shall include megohm, applied test voltage, and leakage current readings. c. Further testing shall not continue unless the insulation resistance test results meet or exceed the values listed below. Test voltages and minimum acceptable resistance values shall be: Voltage Class Test Voltage Min. Insulation Resistance 5kV 2,500 VDC 1,000 megohms 15kV 2,500 VDC 5,000 megohms 25kV 5,000 VDC 20,000 megohms 35kV 15,000 VDC 100,000 megohms 3. Perform Tan Delta test. Review test readings with the //Resident Engineer// //COR// prior to proceeding with the VLF Withstand test. 4. Perform VLF Withstand test. Utilize test voltages in accordance with IEEE 400.2. // SPEC WRITER NOTE: For renovation project where new and service-aged cables are inter-connected, electrical tests are required. A/E shall specify the tests below for the entire run of the cables. //E. Electrical Tests – Inter-connected New Cables and Service-Aged Cables: After successful Tan Delta and VLF Withstand testing of new cables //and service-aged cables//, perform final splicing between new and service-aged cables. Once new and cables are completely inter-connected, conduct Tan Delta and VLF Withstand tests for the entire inter-connected cable. Utilize maintenance test voltage for VLF Withstand testing.// F. Field Test Report: Submit a field test report to the //Resident Engineer// //COR// that includes the following information: 1. Project Name, Location, Test Date. 2. Name of Technician and Company performing the test. 3. Ambient temperature and humidity at time of test.
back) to allow testing without flashover or tracking. Cables shall not be connected to other equipment while under test. 2. Perform Insulation-Resistance Test. Test all cables with respect to ground and adjacent cables. All adjacent cables shall be grounded during testing. a. Apply test voltage for a period sufficient to stabilize output voltage and insulation resistance measurement. b. Test data shall include megohm, applied test voltage, and leakage current readings. c. Further testing shall not continue unless the insulation resistance test results meet or exceed the values listed below. Test voltages and minimum acceptable resistance values shall be: Voltage Class Test Voltage Min. Insulation Resistance 5kV 2,500 VDC 1,000 megohms 15kV 2,500 VDC 5,000 megohms 25kV 5,000 VDC 20,000 megohms 35kV 15,000 VDC 100,000 megohms 3. Perform Tan Delta test. Review test readings with the //Resident Engineer// //COR// prior to proceeding with the VLF Withstand test. 4. Perform VLF Withstand test. Utilize test voltages in accordance with IEEE 400.2. // SPEC WRITER NOTE: For renovation project where new and service-aged cables are inter-connected, electrical tests are required. A/E shall specify the tests below for the entire run of the cables. //E. Electrical Tests – Inter-connected New Cables and Service-Aged Cables: After successful Tan Delta and VLF Withstand testing of new cables //and service-aged cables//, perform final splicing between new and service-aged cables. Once new and cables are completely inter-connected, conduct Tan Delta and VLF Withstand tests for the entire inter-connected cable. Utilize maintenance test voltage for VLF Withstand testing.// F. Field Test Report: Submit a field test report to the //Resident Engineer// //COR// that includes the following information: 1. Project Name, Location, Test Date. 2. Name of Technician and Company performing the test. 3. Ambient temperature and humidity at time of test.
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