Protective relay test

A protective relay test includes the review of protective devices in a system. Protective devices and periodic reviews are very important above all for the safe operation of power supply networks. The protective relay test refers to the protective relay. The proper operation of a protective relay has to be monitored over its entire life or period of operation. This ranges from initial development to production and on-site commissioning to regular testing.

Protective relay test of protective relays

This applies to all varieties of electric power systems, for example by energy suppliers in the production, but also in the distribution and transmission. Similarly, this also applies to areas such as ship or rail technology, commercial or industrial. Thus, the fully functional operation is ensured by this crucial network element, a corresponding protection test must be performed. This test should be run regularly.

Implementation of a protective relay test

To ensure that a protective relay in the given parameters is safe and reliable, the relay must be checked before commissioning on various criteria. Be tested this fault conditions, shifts or steady-state operating conditions, logic diagrams, and other things. Since, in normal operation of the system is not the protective relay used routine tests to be carried out at regular time intervals are required. This routine tests ensure continuous protection of the system by the relay and also extend the life of the relay.

Tasks in a protective relay test

Nowadays, the tasks in a protective relay test are very different. Usually you have to check within the same plant for all kinds of relays. These range from electro-mechanical relays to modern models. Ideally, one should be able to cover each exam for the relay generations with a single instrument. Since modern protective relays usually have a very high number of functions, its structure is very complex. Different manufacturers of protective systems use this very individual philosophies for operation, or testing and algorithms. This in turn means that there is a particularly high cost for the training and instruction for each new system that is to be looked after.

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