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Low Volt Relay Control Wiring Diagram
©Copyright Dave Rongey - Summary:
When the 24V is applied to the relay the relay just “Buzzes” but contacts in the relay don’t close to pass through the 240V AC. The relay has a manual test button and if I press this everything works fine…
Considerations When Wiring Low Voltage Control Relays
Question: I am using 24VDC relays to switch 240VAC (15Amp)on irrigation line. My 24V DC supply is only 1000 MAmp. When the 24V is applied to the relay the relay just “Buzzes” but contacts in the relay don’t close to pass through the 240V AC. The relay has a manual test button and if I press this everything works fine.The Relay is a 782-2C-24D DP relay. I have tested the input voltage at 25.7V DC. Any suggestions.
This electrical question came from: Gerry, a Homeowner from Fernvale Queensland
Thanks for your electrical question Gerry.
Gerry, you may have to increase the size of the control voltage power supply. Check the operational power requirements for the relay. Check the wire size and length of the control wiring as well.
The Following links will assist you with your electrical question:
Electrical Relay Articles
This section will cover the use of relays that are sometimes needed to control special device loads such as Air Conditioners and other high demand equipment from starting at the same time.
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