Precautions for Capacitor Installation
Technical Support
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For high-voltage current-limiting fuses , the rated current should be selected at 1.65 to 2.5 times the rated current of the capacitor.
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For low-voltage protection , high-interrupting capacity fuse-links or circuit breakers should have a rated current of at least 1.35 times the capacitor’s rated current.
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When installing two or more capacitors side by side , maintain a minimum clearance of 8 cm between units to facilitate proper heat dissipation.
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When connecting high-voltage capacitors or outdoor-type low-voltage capacitors in parallel , avoid using copper busbars for wiring.
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The capacity of wiring and switching equipment must be no less than 1.35 times the capacitor’s rated current.
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During maintenance , discharge the capacitors properly:
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For high-voltage capacitors: wait at least 5 minutes after disconnecting power.
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For low-voltage capacitors: wait at least 3 minutes after power-off. Then use an appropriate conductor to discharge between terminals and from terminals to ground. Proceed only after confirming that no residual voltage remains.
For additional safety instructions, refer to the reverse side of the capacitor inspection card or consult the product catalog.