Isolating and grounding a cable requiring repair
1. De-energize cables
A. Open switches at both ends of cable to be isolated.
Refer to Figure 4.
B. Determine that there is adequate working room
around the terminators for parking the grounded
standoff bushings.
C. Determine that there is adequate working room for
handling clampstick around apparatus cabinet.
D. Place insulating rubber blanket on the ground
directly in front of terminators.
E. Inspect and test all operating equipment for
serviceability.
F. Connect grounding elbows to system ground.
G. Connect ground leads of protective caps to system
ground.
H. Connect ground leads of grounded standoff
bushings to system ground.
2. Determine that cables are de-energized
A. Remove 200 A protective cap or arrester from
T-OP II terminators using clampstick and set aside in
a clean, protected area.
B. Insert test probe into 200 A interfaces using
clampstick.
C. Test for voltage by using voltage detector designed
for terminators. Remove probe after testing.
3. Provide a visible ground
A. Close grounding elbows into T-OP II 200 A interface
using a clampstick. Refer to Figure 5.
4. Provide a visible break
A. Clean and lubricate grounded standoff bushing.
B. Mount grounded standoff bushing in the apparatus
parking pocket using a clampstick. Do not tighten
eyebolt–leave grounded standoff bushing loose in
parking stand. Refer to Figure 6.
C. Grasp U-OP operating handle with clampstick, but
do not pull handle completely into clampstick.
Figure 5. Close grounding elbows.
Figure 6. Mount grounded standoff bushing.
WARNING
High Voltage. Do not proceed until cable is de-energized.
Failure to company may result in death, serious personal
injury and equipment damage.
CAUTION
High Voltage. Ground all three phases (Steps 2 and
3) before proceeding. Failure to comply may result in
serouis personal injury and equipment damage.
3
600 A U-OP VISIBLE BREAK CONNECTOR SYSTEM OPERATION INSTRUCTIONS
MN650022EN March 2016
