GE Industrial Solutions AKD-20 Low Voltage Switchgear - Manuel (Page 17)

AKD-20 Low Voltage Switchgear
Chapter 3. Description
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Primary disconnect shutters, Figs. 3-7 and 3-8, are available as
options to provide protection against contact with the energized
stationary primary disconnects when the breaker is removed from its
compartment. Shutters are supplied as standard components in the
main and tie breaker compartments of double-ended substations.
The shutters are constructed from glass-reinforced polyester
insulating material.
Referring to Fig. 3-7, the shutters (movable barriers) prevent frontal
access to the primary disconnect line and load stationary
disconnects.
1. Cassette Walls
2. Shutters (retractable barrier)
3. Operating lever
4. Secondary disconnects
5. Drawout rails
6. Racking shaft
Fig. 3-7. AKD-20 primary disconnect shutter assembly (30-inch wide compartment) shutters in closed position
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