Cable tests that are not equivalent, and why
IEC 60502-2 (partial discharge) ≠ IS 10810-46
Not equivalent, because The method's pre-stress and sensitivity are weaker than those of IEC 60502-2; only the product standard (IS 7098-2) brings the limit to 10 pC.
IEC 60502-2 (partial discharge)
- Held at 2 U0 for 10 s, then no discharge above 10 pC at 1.73 U0 (type test: 5 pC). Sources: IEC 60502-2:2014, 16.3 and 18.2.5, pp. 27, 33 (read in the standard)
IS 10810-46
- Raised only 0.25 U0 above the measuring voltage, for at most 1 min; routine sensitivity 20 pC (40 pC for PVC). Sources: IS 10810 (Part 46):1984, cl. 8.2.2, 8.4, pp. 2-3 (read in the standard)
- The product standard sets the limit: IS 7098-2, at most 10 pC routine and 5 pC type at 1.73 U0. Sources: IS 7098 (Part 2):2011, cl. 20.2, p. 9 (read in the standard)
Values as the sources print them, every one with its source and how it was seen; where a value is not held, it says so. The cable's own standard and the specification decide which test applies.
Questions and answers
Is IS 10810-46 equivalent to IEC 60502-2 (partial discharge)?
No. The method's pre-stress and sensitivity are weaker than those of IEC 60502-2; only the product standard (IS 7098-2) brings the limit to 10 pC.