c. Close the switch completely and make sure that the interrupter resets (cocks) for the
next opening operation.
d. In the fully closed position, the lever should rest on the bumper, and stick above the
bumper at least 1/8".
e. These adjustment checks should be repeated on each independent switch blade/phase.
6. The switch is now ready for installation of the conductors.
E. Maintenance
1. Periodically operate the switch and check for actions described in Section D. Lubricate the
jaw, auxiliary contacts and the end of the blade with factory approved grease.
2. With the handle in the closed position of the lock segment, verify that the switch is fully
closed and there is wind-up torque on the operating pipe. If not, readjust the operating
handle and/or the lock segments (per Section C).
3. Refer to ANSI C37.35 for additional recommendations. C37.35 is “IEEE Guide for the
Application, Installation, Operation and Maintenance of High-Voltage Air Disconnecting
and Load Interrupter Switches.”
Phase-over-phase Vector® group-operated switches (600 and 900 A) Instruction Manual
11
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