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5
Safety
IB-50022A
8. For service, the device must be in the OPEN
position and all operating springs must
be discharged. These conditions should
be verified before removing any covers or
attempting any service.
9. Store the electrically operated ground and
test device in a clean, dry area free from
dust, dirt, moisture, caustic atmosphere,
and vermin.
10. Keep all insulating surfaces, which include
primary support insulation and insulation
barriers, clean and dry.
11. Check all primary circuit connections to
make certain that they are clean and tight.
12. Take extreme care while using this device to
avoid contacting “live” or “hot” (energized)
terminals.
13. Check for dielectric integrity at 27kVAC
across the terminals to ground with the
grounding switch OPEN.
E. X-R
AYS
When high voltage is applied across the
contacts of a vacuum interrupter, there is the
possibility of generation of X-rays. The intensity
of the X-radiation is dependent on the peak
voltage and the contact gap. At the normal
operating voltage for this type of equipment,
the radiation levels are negligible. At the
voltages specified for testing, test personnel
shall be in front of the ground and test device
such that the two layers of steel used in
the frame and front cover construction are
between the test personnel and the vacuum
interrupters, and that the test personnel be no
closer than one meter (3’) from the front of the
circuit breaker.
THE ELECTRICAL GROUND
AND TEST DEVICE SHALL BE EITHER FULLY
OPEN, OR FULLY CLOSED WHEN MAKING
HIGH POTENTIAL TESTS. DO NOT TEST
WITH CONTACTS PARTIALLY OPEN.
F. S
AFETY
L
ABELS
The equipment described in this document
has
DANGER
,
WARNING, CAUTION,
and
instruction labels attached to various locations.
All equipment
DANGER
,
WARNING,
CAUTION,
and instruction
labels shall be observed when
the circuit breaker is handled, operated, or
maintained.
Warning and Caution labels are located in
various places in and on the switchgear and
on the circuit breaker removable element.
Always observe these warnings and caution
labels. Do NOT remove or deface any of these
warning/caution labels.
IMPORTANT
IMPORTANT
!
