KSD3415MA

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Time Delay Relays, such as KSD3415MA are used to achieve delay functions in electric control circuits. These relays usually are composed of instantaneous relay, electric contact, delay circuit and delay coils etc. In simpler terms, the time delay relay is a type of relay which, upon application of the energizing voltage, allows some predefined time interval before it closes its contact or perform some other action.

The KSD3415MA, specifically, is an electronic time relay which is generally used for time control in the electrical circuit. It possesses a variety of functions such as time delay ON/OFF, single-time delay ON, single-time delay Off and cycling time delay. It is widely used in automatic control and protection system, especially in the area of electrical equipment protection. Its greatest advantage is that it is able to control precisely according to the user’s need, with different delay time could be set by changing the internal resistance value.

The working principle of the KSD3415MA time delay relay is a bit complicated. It can be divided into two parts: static and dynamic. During the static stage, the relay is energized, and the Time Relay Unit (TRU) connected with the MOS Drive Unit 1 (MDU1) is excited step by step. Then the volatage generated by the resistances is kept for a certain time. Finally, the collector current is accumulated to a certain level through the contact resistance and enters into the MDU1, then a time delay is successfully achieved. During the dynamic stage, the relay maintains a dynamic balance under the drive of the MDU in a completely closed or completely open manner. After predetermined period of time, the internal voltage reaches the control threshold, and this control threshold is set by the user by adjusting the internal resistance value. When the threshold is reached, the relay is triggered and the control circuit is activated according to user’s specific requirements.

In conclusion, the KSD3415MA time delay relay is an important type of delay which has a wide range of uses. Its precise performance, durable construction, and ability to be programmed to specific needs make it a popular choice for time control.

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