GE SF6 Instruction Manual page 18

Interrupting chamber
Quenching medium
Interrupting principle
Diagram
Description
08- 2016
Description and operation
Description of the interrupting chambers
The quenching medium is pressurized SF
pressurized SF +CF gas mixture.
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The interrupting chamber is of thermal blasting type, using the energy from
the arc, with an auxiliary auto pneumatic effect.
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The interrupting chamber has been designed in such a way as to increase the
mechanical resistance of the working part and take advantage of the low wear
rate of the contacts subjected to the arc in SF
in a leak tight ceramic envelope, providing insulation between the circuit-
breaker input and output.
The chamber is made up of the following elements :
Mark
(1) Envelope
(2) Fixed contact
(4) Moving contact
GE Information
gas or - in particular instances -
6
2
. The working part is enclosed
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Component
Can
distance,
pollution level.
It is worked by the operating
mechanism and contains the
blasting device.
4
Information
have a long creepage
depending on
L12- 105EN/04
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the