Time relay is the relay from the input signal to the beginning of the contact action has a certain delay, the delay and meet the accuracy requirements of the relay, it is actually a delay relay with a voltage relay, the delay There are two characteristics of the power delay and power-off delay; its contacts also have instantaneous action and delay action of two, time relay is generally used as an auxiliary component in a variety of protection and automatic devices, so that the controlled element action The required delay. Time relay action principle can be divided into the following two categories: 1. Mechanical time relay. It can be divided into damping (including oil damping, air damping or air bag, electromagnetic damping), mercury, clock and bimetallic four kinds. 2. Electrical time relay. It can be divided into electric, counter, thermistor and RC (including electromagnetic, electronic ) and other four. At present, a wider range of electromagnetic damping, air damping, motor and electronic time relay. According to the delay mode can be divided into the following two categories: 1. Power delay type. The relay coil in the input signal (or power), immediately began to delay, until the delay is completed, the implementation of the part (ie, contact) output signal (ie action). When the input signal disappears, the relay resumes the action before the state. The action of the situation, that is, from the coil energized to contact the action of the time (T) that the power delay time. 2. Power delay type. The relay and the former contrary, when the input signal (power), the executive part of the output signal immediately when the input signal disappears, (power) relay after a certain delay, to return to the pre-action state, from the coil power to the contacts The reset time is the power-off delay time. Dinner Bowls,White New Bone china,Porcelain Dessert Plates,Porcelain Dishes Plate HANDAN OURAY I/E CO., LTD , https://www.ourayceramicware.com