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Hi all, I have few questions, would like to understand about thermocouple sensors working: 1- We have some thermoucouple sensors (type T), the distance between sensors and transmitters is about 200m. As the thermoucouple output is few millivolts, is this distance can causes drop voltage and...

Thank you all I think i found the right one from Siemens, miniature circuit breaker 1-pole with auxiliary switch NO contact 230 V AC, 60 V DC Mini: miniature

Hi all, I'm looking for Mini CIRCUIT BREAKER 1 POLE 2A with aux contacts (1NO and 1NC for example) I searched but i can't find one with aux contacts, can you suggest some models?

We had rotor winding earth faults before during starting and stator overcurrent protection reacted but the rotor is damaged or has a low insulation resistance in some cases after that. The only thing, that we don't have data on the rotor to analyse what happened because no measurement (specially...

We use 2 or 3 cables for each rotor phase. Failure modes could be low insulation resistance of cables or the rotor itself. We have vibration probes on motor bearings.

Thanks for the help I was thinking to install a manually operated switch-disconnector between the contactor of the liquid rheostat and the rotor but as you said, it will become a test point and a potential source of failure. The problem we do not have any monitoring on the rotor of the motor...

Hi all, We recently installed a Liquid Resistance Starter in replacement of grid rotor resistance for 2 motors 11kV/2700kW. With grid rotor resistance, we could make a rotor to earth insulation test using Megohmmeter insulation tester (we test rotor+cables+resistances connected together). The...