0.3s-30s,24VAC/DCVAC,1c/o
ABB CT-E electronic time relay CT-ERE 0.3s-30s, 24VAC/DC, VAC, 1c/o
1、中间继电器(intermediate relay)：用于继电保护与自动控制系统中，以增加触点的数量及容量。 它用于在控制电路中传递中间信号。中间继电器的结构和原理与交流接触器基本相同，与接触器的主要区别在于：接触器的主触头可以通过大电流，而中间继电器的触头只能通过小电流。所以，它只能用于控制电路中。 它一般是没有主触点的，因为过载能力比较小。所以它用的全部都是辅助触头，数量比较多。新国标对中间继电器的定义是K，老国标是KA。一般是直流电源供电。少数使用交流供电。
1, intermediate relay (intermediate relay): used in the relay protection and automatic control system to increase the number and capacity of the contact. It is used to transfer intermediate signals in a control circuit. The structure and principle of intermediate relay are basically the same as that of AC contactor. The main difference between the relay and contactor is that the main contact of the contactor can pass through a large current, while the contact of the intermediate relay can only pass through a small current. So, it can only be used in the control circuit. It is generally not the main contact, because the overload capacity is relatively small. So it uses all the auxiliary contacts, and the number is much more. The new national standard is defined as K for intermediate relays, and the old national standard is KA. Generally, it is DC power supply. A few use AC power supply.
2、时间继电器（time relay）是指当加入（或去掉）输入的动作信号后，其输出电路需经过规定的准确时间才产生跳跃式变化（或触头动作）的一种继电器。是一种使用在较低的电压或较小电流的电路上，用来接通或切断较高电压、较大电流的电路的电气元件。同时，时间继电器也是一种利用电磁原理或机械原理实现延时控制的控制电器。它的种类很多，有空气阻尼型、电动型和电子型等。
2, time relay (time relay) is a relay that produces a jump change (or contact action) after the input action signal is added (or removed), and its output circuit needs to pass the specified time accurately. A circuit used in a circuit with a lower voltage or a small current to connect or cut off the electrical components of a circuit with high voltage and large current. At the same time, time relay is also a kind of control electric appliance that uses electromagnetic principle or mechanical principle to realize time delay control. There are many types of it, such as air damping, electric and electronic.
