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RTD for the 11 kV Air Cored Series Reactor winding temperature measurement

RTD for the 11 kV Air Cored Series Reactor winding temperature measurement

RTD for the 11 kV Air Cored Series Reactor winding temperature measurement

(OP)
We have a requirement to procure 11 kV Air Cored Series Reactor as part of the 40 MVAR Compensation equipments. The specification calls for providing the RTDs to measure the reactor winding temperature. But the supplier is telling that it is difficult to provide due to the constructional features of Air Cored Reactor.
The feeder protection relays are adequate for the protection of series reactor. Also, if there is any overloading in the equipment, the equipment overload detection should protect the reactor also. AS such the reactor[s][/s] alone cannot be over loaded, since it is in series with the capacitors. Any views?

RE: RTD for the 11 kV Air Cored Series Reactor winding temperature measurement

Temperature indicators in transformers and reactors are not provided for protection purposes,but only for monitoring. But there is no reason why RTD cannot be provided in series reactors for winding temperature indication. It will require a bushing CT to feed to RTD heater plus a thermowell at tank top. Due to high leakage magnetic field it may have to be of a non ferrous material.You may ask manufacturer foe exact reason for his inability.

RE: RTD for the 11 kV Air Cored Series Reactor winding temperature measurement

Prc, the post refers to an air cored reactor. I think your comments relate to an oil filled reactor.

Regards
Marmite

RE: RTD for the 11 kV Air Cored Series Reactor winding temperature measurement

Marmite, Thank you for correcting me. I messed up with oil filled reactor.So manufacturer is correct.

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