Guidelines for Contactor inspection and maintenance
Some general advice
1. Choose correctly
• Nature of the duty
• Positioning of the contactor
• Voltage and frequency
• Frequency of operation
• Safety regulations
• Electrical and mechanical stresses
2. Mounting/installation
• The instructions supplied with every
contactor should be followed.
• In case of drilling in the panel make sure
to protect the contactor from falling
metal shavings that otherwise could
lead to excessive hum or flashovers.
3. Storage and climate
Consider the immediate environment
(variable temperatures, humidity, storage
conditions etc).
4. Connections
Make sure the recommended torque val
ues given in the instructions are followed
and that proper torque checks depending
on the application are done.
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