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I'm looking for a book about control/Protection of hydro Power plants. Covering subjects such as: Start sequence, stop sequence, emergency stop, MVAr reg. voltage regulator, syncronizing etc. I'm working with commissioning, and are used to work in substations, but power plants is new for me.

I'm looking for a manual or instruction how to test a Mitsubishi electronic trip relay of type ST 1A, which is combined with an Air circuit breaker Mitsubishi AF 1600. I would appreciate any information that could guide me how to maintenance test the unit. BR Gestur

Meassure the current/voltage, and include a chart recorder in your test equipent or use TFR files, include this data with the test report and many problems can be avioded. I also meassure that there is voltage over the trip contact.

Hello Skogsgurra, You can find more info on the contact info on www.turtle.nu from the scandinavian distribution company..also have their own technical team. Best regards Gestur

This sounds like an SVC application for utility use. The reasson for 5:th and 7:th harmonic filter is because these harmonics are generated from the TCR(Thyristor Controled Reactor), also other harmonics are generated but 5, an 7 are generated with highest amplitude. The amount of harmonics...