Eaton 150VCP-W1000 - Insulation Integrity Check; Wipe Indication Procedure

I.B. 32-255-1G
Page 37
Effective 12/02
Figure 6-4 Wipe Indication Procedure (Performed Only with Breaker Closed)
in service. If a solvent is required to cut dirt, use Stod-
dard’s Solvent Cutler Hammer 55812CA or commercial
equivalent. Secondary control wiring also requires inspec-
tion for insulation damage.
6-7 INSULATION INTEGRITY CHECK
Primary Circuit:
The integrity of primary insulation may be checked by
the 60Hz AC high potential test. The test voltage
depends upon the maximum rated voltage of the break-
er. For the breaker elements rated 4.76 kV, 8.25 kV, 15
kV and 27 kV, the test voltages are 15 kV, 27 kV, 27 kV
and 45 kV RMS respectively. Conduct the test as
follows:
Close the breaker. Connect the high potential lead of
the test machine to one of the poles of the breaker.
Connect the remaining poles and breaker frame to
ground. Start the machine with output potential at zero
and increase to the test voltage. Maintain the test volt-
age for one minute. Repeat for the remaining poles.
Successful withstand indicates satisfactory insulation
strength of the primary circuit.
If a DC high potential machine is used, make certain
that the peak voltage does not exceed the peak of the
corresponding AC rms test voltage.
Secondary Circuit:
Isolate the motor by pulling apart the two insulated quick
disconnecting terminals in the two motor leads provided
for this purpose (Figure 3-3). Connect all points of the
Any part of Red or Gray Indicator Visible
— “Wipe” Satisfactory
Red or Gray Indicator Not Visible
— “Wipe” Unsatisfactory
Any part of “T” Shape Indicator Visible
— “Wipe” Satisfactory
“T” Shape Indicator Not Visible
— “Wipe” Unsatisfactory
Any part of Indicator Visible
— “Wipe” Satisfactory
Indicator Not Visible
— “Wipe” Unsatisfactory
WHITE CONTACT SPRINGS
BLUE OR RED
CONTACT SPRINGS
ORANGE OR BLACK
CONTACT SPRINGS