GE GL317D Instruction Manual page 12

Pole of the circuit- breaker
Description
Diagram
Interrupting
chambers
Support column
Housing of the
mechanism
03- 2017
Description and operation
General description of the circuit- breaker
The pole of the circuit- breaker is made up with three main components :
S The interrupting chambers (1).
S The support column (2).
S The housing of the mechanism (3).
1
1
5
2
3
The pole is comprised of two interrupting chambers (1) - in a ceramic envel-
ope - equipped at each end with a resistor (12) and an HV terminal (5).
The interrupting chambers are laid out horizontally and attached, at their
base, to a common housing (6). This housing contains the mechanism used
to transfer the operating movement to the mobile contacts of both chambers.
The interrupting can also be equipped with capacitors (7).
Consisting of two, three or four ceramic insulators, the support column (2)
allows the circuit- breaker to be ground- insulated and it also encloses the
operating tie- rod which is attached to the interrupting chamber's moving con-
tacts.
The support column can also be equipped with a corona ring (13).
A housing (3) - situated at the base of the column - contains the lever and
crank assembly and which operates the moving contact.
The SF filling and monitoring device (8) is also situated on the housing.
6
GE Information
6
7
12
5
12
7
13
3
8
L12- 039EN/03
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