Hipot Tests - GE SPA11A Instructions Manual

Hi pot Tests
Remove internal connection from surge capacitor buses to surge ground
a)
terminals 6 and 16.
b) Common Mode Hi pot Tests (All terminals to case)
Temporary connections should be made to tie all relay terminals together. Hi pot
voltage can then be applied between this common connection and the relay
case.
c)
Transverse Mode Hi pot Tests (Between circuits)
For hipot tests between circuits of the relay, the surge capacitors must be
temporarily disconnected from the surge capacitor buses inside the relay. Hipot
voltage can then be applied between any two of the circuit groups indicated in
Table IX. Where there is more than one terminal in a group, those terminals
should be jumpered together.
An alternate test using a 500 DC MeggerTM can be performed between the
circuit groups of Table IX with the surge capacitors connected in their normal
manner. While this method does not test the relay to its full dielectric rating, it
will detect some cases of degraded insulation.
CIRCUIT GROUPING FOR TRANSVERSE MODE HI POT TESTS
SPA11A
SPA 11B
SPA12A
SPA 12B
GEK-65512
TABLE IX
RELAY
TERMINALS OF CIRCUIT GROUPS
a. 4,5
b. 7, 8
c. 9, 10
d. 12, 13
e. 14, 15
f. 17, 18
Same as SPA 11A plus:
19, 20
I.
a. 4,5
b. 7, 8
c. 9, 10
d. 12, 13
Same as SPA 12A plus:
e. 1, 11
f. 2, 3
g. 19, 20
16