L&T Electrical & Automation GIS GV3N, Руководство по эксплуатации и техническому обслуживанию

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DISCONNECTING SWITCH
Operation & Maintenance Manual 03
3.1 - External View
The disconnecting switch (DS) provided in the panel is of a
3-position type. The whole driving mechanism is accessible from
the front panel, which is air insulated. The moving contacts,
3.0 DISCONNECTING SWITCH
Figure 3.1 - DS Fascia
3.1.1 - Fascia of Disconnecting Switch
The driving force from the operation device is transferred
through the connecting shaft to the rod and blade.
As the shaft rotates, the insulating rod drives the blade to select
xed contacts and the drive link are located inside a gas
compartment.
The operation can be performed by both the motor spring drive
(CLOSE/OPEN) or manual-spring drive (CLOSE/OPEN/ EARTH).
one of three positions - CLOSED, OPEN, OR EARTHED.
The gas sealing of the drive rod is well taken care by a double 'O'
ring and gas seal.
1) Disconnecting Switch Position Indication
2) DS operating mechanism
3) DS Operating handle Socket
Front View Side View
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