What is the wiring method of time relay?

The time relay is a very important component in the electrical control system. Generally divided into two types: power-on delay and power-off delay. From the principle of action, there are electronic type, mechanical type, etc. The electronic type uses the principle of capacitor charge and discharge combined with electronic components to achieve delayed action. There are many mechanical types, including the air bag type that uses air bags and springs.
Time relay wiring method:
1. Control wiring: think of it as a DC relay;
2. Work control: Although the control voltage is connected, whether it takes control is determined by the timer on the panel;
3. Functional understanding: It is a switch, single pole double throw, with an active point movable arm, just like the movable arm of a common knife switch;
4: Load wiring: The neutral wire or negative terminal of the power supply is connected to the neutral wire or negative terminal of the electrical appliance;
5. Working principle: During the timer invalid period, it is equivalent to the normal light switch off state. When it is effective, the relay operates and the electrical appliance is powered to work, which is equivalent to the normal light switch on state.