S&C PMH Instructions For Operation Manual page 18

S&C Source-Transfer PMH Pad-Mounted Gear
Outdoor Distribution (14.4 kv and 25 kv)
SWITCHING WITH UNI-RUPTER — Continued
5. Use the Grappler to remove the dual-purpose front bar-
rier from the "slide-in" position. See Figure 17.
Ç
DANGER
Closing a fuse into a faulted circuit will cause a
loud noise, a flash of light at the Uni-Rupter con-
tacts, and the fuse to blow. Closing a fuse into a
faulted circuit is always a possibility. When closing a
fuse, always turn your face away then use a swift, un-
hesitating thrust since the closing operation is com-
pletely operator dependent. With Uni-Rupter, a fuse
can be closed into a fault current once or twice as
specified in Appendix C, and the Uni-Rupter will re-
main operable and able to carry and interrupt rated
current.
Figure 16. Fuse installed in mounting in the open position.
663-503 INSTRUCTION SHEET
Page 18 of 35
August 14, 1995
With Micro-AT
6. With the Grappler prongs pointed downward, insert the
longer prong into the pull ring of the fuse. See inset of
Figure 18. Then with one's face turned away, close the
fuse with a swift, unhesitating thrust. See Figure 18.
Remove the Grappler from the pull ring.
Ç
After removing the Grappler from the pull ring, make
sure that complete fuse closure was attained by pushing
against the fuse with the Grappler. Failure to com-
pletely close the fuse can result in damage to the
Uni-Rupter.
7. Use the Grappler to hang the dual-purpose front bar-
rier in its normal, suspended position. See Figure 13.
Also install the optional inner barrier panel, if fur-
nished.
8. Close and latch the doors and install a padlock. Pull on
the doors to verify that they are securely latched.
Figure 17. Removing dual-purpose front barrier from the
"slide-in" position using Grappler.
S&C ELECTRIC COMPANY
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Control
NOTICE
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