Citadel 2.0 - Instruction Manual - page:
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Visual Inspection
The purpose of visual inspection is to check the visible exterior of the breaker in its usual
operation and withdrawn positions. Once a year, a general visual inspection should be
carried out. The outer insulation parts should be wiped with a rag more frequently if the
breakers are exposed to dust.
Annual Inspection Check List
The Visual Inspection List
Inspection
Description
Circuit Breaker
Check if position indicator is normal
Check for the presence of dust or moisture
Check for unusual noise, smell or discoloration
Operate breaker electrically
Temperature Rise
Check primary finger clusters or terminals for discoloration or for
traces of overheating.
1. Clean circuit breaker, especially post insulators and any insulating couplers.
2. Check all terminal screws.
3. Check all screw connections and locking devices on mechanism parts that looks suspect.
4. Insure all electrical connections are tight and have low electrical resistance values.
Hazardous voltage and high-speed moving parts will cause death,
serious injury and property damage.
De-energize all equipment before working on it.
Read instruction manuals, observe safety instructions and ONLY allow
trained ,qualified personnel to engage with this equipment for service,
maintenance and operations.
DANGER
TABLE 16
Cleanliness check
Figure 11 (page 39)
is a side view of the circuit breaker with the insulating barriers removed
(if furnished) to show the vacuum interrupter, and the upper and lower connection pads.
All of these components must be clean and free of dirt or any foreign objects. Use a dry
lint-free cloth. For stubborn dirt, use a clean cloth dipped in isopropyl alcohol (except for
the vacuum interrupters). For stubborn dirt on a vacuum interrupter use a cloth and warm
water and a small amount of mild liquid-household detergent as a cleaning agent.
Dry thoroughly using a lint-free cloth.
Inspection of flexible connectors:
Inspect the flexible connectors that connect the
bottom movable contacts of the vacuum interrupters to the lower connection pad for
tightness and absence of mechanical damage, burning or pitting.
M A I N T E N A N C E
