SE-105DL

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As one of the most important components of Protection Relays and Systems, SE-105DL plays a crucial role in the power system industry. It can help effectively protect the power system and generator motor from multiple parameters. In this article, we will talk about its application field and working principle.

SE-105DL is a voltage monitoring protection relay which is mainly installed in power systems and distribution systems. It protects the system against phase and ground current, phase under voltage and phase-ground over voltage. Specifically, it applies for the following fields:

• Power line ammeter installation to monitor the current of power lines, protect against short circuit and avoid interruption of power supply
• Installation in generator motor to protect against phase-ground overvoltage and phase current leakage
• Protection against lightning stroke and overvoltage for power distribution systems
• Protection against short-circuit and overvoltage for transformers and wind generator motors

As for the working principle of SE-105DL, it is a three-phase voltage monitoring protection relay with two set points. The first one is operated on the same phase voltage which is used to trigger the start of the protection devices, while the second one is operated by the phase-ground voltage that is used to close the circuit of the protection devices. The dead zone between the two set points is adjustable within the range of 10 ~ 30V. It also can be configured to measure current leakage and operate upon the set current leakage value.

In conclusion, SE-105DL is a powerful voltage monitoring protection relay. It can help protect the power system, distribution systems, generator motors and low voltage transformers from over-voltage, under-voltage and current leakage. It is usually applied for the environment with inherent danger, and it plays an irreplaceable role in safety protection.

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