JHARKHAND STATE ELECTRICITY BOARD

7) Accuracy & routine tests:
The metering panels shall be tested for following tests as per IS:3427 by the representative of
purchaser before accepting the supplies
i) power frequency voltage dry test
ii)
iii)
voltage test on auxiliary circuits
Verification of wiring.
The 28 kV pf withstand voltage for one minute as per relevant ISS will be carried on 10% of units
and remaining 90% units shall be tested at 75% of 28 kV i.e. 21 kV pf with stand tests on the
offered lot.
7.2) Following CTs & PTs of same specification are to be supplied free of cost along with cubicles :-
i) Single phase PT- 70 nos.
ii) Single phase CT- 140 nos.
Electrical Superintending Engineer
(Purchase) JSEB, Ranchi.
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