Maintenance
9229 0020 176 0B
51
2019-04-02
Maintenance
Maintenance and servicing
Maintenance
The vacuum circuit-breaker SION
®
is maintenance-free under normal operating
conditions (up to rated current). We do, however, recommend you carry out regular
visual inspections. The highest permissible mechanical operating cycle number is
10 000.
Preliminary work
• Prior to starting work on the vacuum circuit-breaker, observe the local safety
regulations for high-voltage devices and the "5 safety rules" as per EN 50110-1.
• Switch off the supply voltage and secure against reclosing.
• On the vacuum circuit-breaker, actuate the OPEN, CLOSE and OPEN pushbut-
tons manually one after the other. This ensures that the vacuum circuit-breaker
is open and the closing spring is discharged.
Cleaning
The insulating parts must be clean if their insulating capacity is to be guaranteed.
Rub insulating parts with a moist cloth.
As a cleaning agent, use only warm water with a mild, liquid household detergent
added and leave to dry.
Joints and bearings that cannot be disassembled must not be washed out with a de-
tergent prior to work.
DANGER
High voltage - danger to life!
Touching live parts is fatal or causes serious physical injury.
Before beginning maintenance work, note the 5 safety rules for high-voltage
equipment specified in EN 50110-1, namely:
• Isolate from the power supply
• Secure against reclosing
• Verify safe isolation from the power supply
• Earth and short-circuit
• Cover or cordon off neighbouring live parts
WARNING
Risk of crushing!
Mechanical parts can move quickly, even if they are remote-controlled.
Contact with mechanical parts or parts under spring charge can lead to crushing
of body parts.
• Do not remove covers.
• Do not reach into openings.
• Do not touch pole assemblies or circuit-breaker shaft.
WARNING
Risk of burns!
Touching the hot heater will cause burns.
Do not touch the heater before it has cooled off.
Summary of Contents for SION 3AE6113-0
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Page 44: ...Installation 44 9229 0020 176 0B 2019 04 02 Blank page ...
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