Manuals through 2025 now available!
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LEMON is the spiritual successor to CHARM, I recommend you try it!
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Power Distribution Relay: Testing and Inspection
Normally-open type A:Check for continuity between the terminals.
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There should be continuity between the No.1 and No. 2 terminals when power and ground are connected to the No.3 and No. 4 terminals.
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There should be no continuity between the No.1 and No.2 terminals when power is disconnected.
Accessory socket relay