Operating Handle; Interlocks - Mechanical; Door Interlock - Toshiba JK 400 Series Instruction Manual

Ampere medium voltage controllers fixed type 7.2kv maximum

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Basic Installation and Operation Guide

JK 400 Series Fixed Controllers

E. Operating Handle

The external operating handle shown in Fig. 29 is used to control the operation

of the isolation switch. Moving the handle upward turns the switch on, thus

applying incoming power to the main current-limiting fuses.

Moving the handle down opens the isolation switch, de-energizing all medium

voltage incoming power to the controller compartment. At the same time, an

automatic shutter within the switch closes, providing an effective barrier between

the controller compartment and the incoming supply. The opening of the switch

also causes the line side of the power fuses to be grounded.

Further details on the isolation switch and external operating handle can be

found in the Maintenance section.

Fig. 29 Operating Handle

F. Interlocks - Mechanical

a. Door Interlock

A mechanical interlock is provided to prevent opening or closing the medium

voltage compartment door unless the switch operating handle is off (Fig. 30).

Fig. 30 Door Interlock

TOSHIBA

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