What is a time delay relay?
A. A time delay relay is a solid state device which is triggered by one of two methods. Delay on make and delay on break are the two categories. Delay on make is the relay that starts timing the delay when it receives the signal, and delay on break start timing when it loses the signal. Both are available in various delay times and even with adjustable times where you can set spacing between starts of units rather than bringing all units on at the same time in the case of a demand meter spike scenario. Some areas may have a power company which gives the owner a demand device for billing credits and the demand device may have a 5-7 minute delay on make already built in, so a delay on break would be the most applicable relay to have, because if you have the 5-7 minute delay from the demand device a delay on make of 5 minutes would take the off time to 10-12 minutes instead of the 5-7 minutes. Choose wisely. Many compressors can not start if there is an imbalance in pressures from the con
