IG-322-EN version 03; 22/07/2022
29
General instructions
SF
6
-insulated circuit-breaker panel:
Type
gae
.630 -1LSV(G)-/5/
in modular extensible design up to 24 kV, 20 kA
Technical description
4.6. Vacuum circuit-breaker
The vacuum circuit-breaker is a three- pole, indoor circuit-
breaker with rated voltages of 12 kV or 24 kV.
It comprises the base frame, to which the actuator and pole
part are fitted.
The switch poles take up the vacuum switch tubes with
contact system, the contact pressure spring and the
opening spring.
The following circuit-breakers are used:
•
LSV 24/20/630
(gas insulated Vacuum circuit-breaker
with motor winding).
•
LSV 24/20/630-H
(gas insulated Vacuum circuit-breaker
with manual winding).
The operating mechanism is a stored energy spring
mechanism. It is connected to the vacuum contact
chambers via a system of levers and a gas-tight stainless
steel bellow.
The stored energy spring mechanism is tensioned by using
a crank handle or winding motor. The circuit-breaker can be
tripped manually by means of a pushbutton or electrically
by means of an actuator.
When switched ON, the closing spring relaxes and closes
the contacts in the vacuum chamber via a series of levers.
The opening spring is simultaneously tensioned. Re-
tensioning the closing springs immediately after switching
the circuit-breaker ON allows makes it possible to switch a
brief interruption OFF-ON-OFF.
The standard circuit-breaker is always equipped with the
ON and OFF pushbutton, the switch position indicator,
the spring accumulator indicator and the operating cycles
counter.
The basic equipment for controlling and triggering the
circuit-breaker with manual wind-up comprises the
following auxiliary units:
• transformer-operated trip Y5
• four-pole auxiliary switch for messaging purposes
• fleeting contact, message OFF.
Summary of Contents for ORMAZABAL gae.630
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