Protection Relay

    GRV8-63 Voltage protector

    Overvoltage and undervoltage protection for household equipment.

    JVM-1 Protection Relay

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    APR-4VT Protection Relay

    APR-4VT is the relay to prevent the reverse run of three-phase induction motor. In addition...

    APR-3 Protection Relay

    APR-3 is the relay to prevent the reverse run of three-phase induction motor, which can effectively...

    11WRUPS Protection Relay

    11WRUPS is the relay to prevent the reverse run of three-phase induction motor. In addition the...

    A protection relay is the last line of defense for electrical systems. It is a must-have tool in every building, company, or factory. But how does it work? More importantly, what can it do for you? Well, that’s what we’re about to find out.

    What Is a Protection Relay?

    When a protection relay detects a fault, it will trip a circuit breaker. It can protect your devices from:

    • – Over-current
    • – Over-voltage
    • – Over-frequency
    • – Reverse power flow
    • – Under-frequency

    You can use a protection relay to keep equipment such as motors, transformers, generators, and pumps protected.

    Now that you know what it does, the next question is how it works. Well, when a device short circuits or starts to operate in an abnormal manner, the relay will immediately remove it from service. If you don’t have a protection relay, the device might cause damage or tamper with the system’s performance.

    Types of Protection Relays

    There are three distinct ways we can separate protection relays. First, you can categorize them based on the logic of use:

    • – Directional
    • – Differential
    • – Unbalanced
    • – Bus bar protection etc.

    Then, you can categorize a protection relay based on the actuating parameter:

    • – Current
    • – Voltage
    • – Power
    • – Frequency

    Also, we also have a category that’s based on application:

    • – Primary
    • – Backup

    Finally, you can separate them based on construction:

    • – Electromechanical
    • – Induction
    • – Static
    • – Digital
    • – Numerical

    Now, the five main things you need to consider when buying a protection relay are: durability, reliability, speed, sensitivity, and security. But if you go with a model from AlionTimer, you won’t have to worry about any of these things. You can rest assured that your relay will be durable and last you a long time.

    Applications of Protection Relays

    Protection relays have many uses and functions. First, as soon as one of the components in your system starts behaving abnormally, the relay will close the circuit. It can also disconnect any parts that have stopped working. By doing so, it can minimize any potential damage the faulty part would cause your system. But that’s not all.

    Protection relays can improve the performance and reliability of your entire system. They will also ensure that your system is stable, and that it doesn’t fail or stop working. Now, you might not be able to completely avoid damage due to a faulty component. But with the help of a protection relay, you can minimize the faults and help keep your systems safe.