How Electrical On-Delay Staging Relays Work
Summary: 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.
© By: Dave Rongey
Problem Solvers for Air Conditioners
- Energy Savers for Large Electrical Loads
This method will help prevent nuisance tripping of sub-feed circuit breakers and reduce the electrical demand on your utility service which could lead to much higher energy bills.
DELAY ON MAKE.
• 3 or 5 minute fixed.
• Works with anticipator thermostats.
MODE OF OPERATION:
When power is applied to the input, the time delays begins. After the time delay is
complete, the load energizes and remains energized as long as power is applied.
The control is reset by removing power during or after the time delay period.
1. Disconnect power.
2. Connect terminals in series with the
starting device as shown in the wiring
3. Reapply power, check operation.
4. Trickle current bypass resistor
T1 to T3 <1K ohm.
• Voltage: 18-30 VAC
• Frequency: 50/60 Hz
• Output Ratings:
– Maximum: 1.5 amps
– Minimum: 40 mA
– Inrush: 15 amps
• 3 or 5 minute fixed
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Electrical Relay Construction and Purpose On Delay - 1854