22
Instruction Book
IB182221EN September 2017 www.eaton.com
GE AM [Cable or Hard Bus Application]
Ground and Test Device
SECTION 6: INSPECTION AND
MAINTENANCE
6.1 INTRODUCTION
DANGER
DO NOT WORK ON A GROUND AND TEST DEVICE IN THE “CONNECTED”
POSITION.
DO NOT DEFEAT ANY SAFETY INTERLOCKS.
FAILURE TO FOLLOW ANY OF THESE INSTRUCTIONS MAY CAUSE DEATH,
SERIOUS BODILY INJURY, OR PROPERTY DAMAGE. SEE SECTION 2 - SAFE
PRACTICES FOR MORE INFORMATION.
6.2 FREQUENCY OF INSPECTION
Inspect the Ground and Test Device at least once a year or before
each use, especially in a severe service condition.
6.3 INSPECTION AND MAINTENANCE PROCEDURES
Insulation
Visually inspect all insulating barriers. Ensure that there is not dirt
visible on the surface of any of the barriers. If dirt is found, clean
with a lint-free cloth. If a solvent is required to cut dirt, use isopropyl
alcohol.
Hardware
Visually inspect all hardware. Replace any damaged or missing
hardware with parts equivalent to those provided with the Ground
and Test Device.
Power Frequency Withstand Test
Individually energize each terminal (without cables, but with
insulating barriers) with the frame and device ground connection
system and all other terminals grounded. See Section 6-4 for
procedure.
6.4 INSULATION INTEGRITY CHECK
A sinusoidal AC voltage shall have a crest value of no less than 1.414
times the rated power frequency withstand voltage value specified,
and shall be applied to each terminal as specified in Section 6.3. The
frequency shall be /- 20% of the rated power frequency. For
5kV, the test voltage shall be gradually increased from zero to 15 kV
rms and held for 1 minute without flashover. For 7.5kV and 15kV, the
test voltage shall be gradually increased from zero to 27kV rms and
held for 1 minute without flashover.
