Insulation Resistance
Electrical FOR: Insulation $1,820This test determines the insulation resistance of a finished wire sample. Insulation resistance is of interest in high impedance circuits and as an insulation process quality control test. When used as part of a wire/cable environmental testing, prolonged thermal exposure, and/or extended high voltage testing, changes in the insulation resistance can be used as an indicator of insulation deterioration.
The pass/fail criteria for the test is based on the particular product specification
More information about insulation resistance testing is available here.
Procedure
- Perform visual examination of the specimen and record any defects.
- Strip the ends of the specimen and submerge the sample in a saline solution with the ends above the fluid line.
- Allow specimen to soak for the specified duration.
- Attach specimen to test circuit.
- Apply DC voltage and slowly raise to target voltage. Allow system to dwell at the specified voltage for the specified duration.
- Measure the leakage current. Remove voltage from the specimen.
- Report the sample length, leakage current, applied voltage, and insulation resistance per 1000 ft.
Covered specifications
- AS4373 Method 504
- AS22759 Paragraph 5.4.2
- AS85485 Method 4.7.18
- ASTM 3032 Section 6
- BSS7324 Method 7.34
- EIA-364 Method 21
- EN3475 Method 303
- FED-STD-228 Method 6031
- MIL-STD-202 Method 302
- MIL-STD-2223 Method 3003
- MIL-DTL-24643 C Method 4.9.5
- MIL-DTL-26482
- MIL-DTL-38999 Method 4.5.10.1
- MIL-PRF-55339 C Method 4.5.8
- MIL-DTL-81381 Method 4.7.4.2
- MIL-DTL-83513 Method 4.5.7
- AS81044 Method 4.7.5.2
- ASTM D1000 Method 91
- ASTM D257
- ASTM D3032 Method 6
- BSS7324 Method 9
- ICEA S-76-474 Method 6.4.1
- ICEA S-81-570 Method 3.3.1
- J1654 Method 5.3
- MIL-C-82621 Method 4.4.3.2
- MIL-DTL-24643D Method 4.9.05
- MIL-DTL-3885 Method 4.4.2
- MIL-DTL-49055G Method 4.7.5
- MIL-M-24041 Method 4.7.4.5
- NEMA WC 70 Method 6.10.2