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current transformer
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  1. Services and Service Equipment
    Can any one help me out here a little bit? I have a Ground Fault Current Transformer on a 100HP motor. the GFCT is wired direct to the soft start provided with the motor. I know it looks for a current imbalance, but what I need to know is there a way to test these without actually having to...
  2. PLCs, VFDs, Motors and Controls
    So here is the set-up: Three current transformers shall be clamped to the secondary side of a transformer. Then two power analyzers will be connected across two phase of the 3 phase system because I wanted to implement a two-watt hour meter method. The reason for the transformers is to scale...
  3. General Electrical Discussion
    So here is the set-up: Three current transformers shall be clamped to the secondary side of a transformer. Then two power analyzers will be connected across two phase of the 3 phase system because I wanted to implement a two-watt hour meter method. The reason for the transformers is to scale...
  4. General Electrical Discussion
    Hello, does anyone know what this symbol means? Its a current transformer with a 50g relay connected to some 11.5kv substation conduit. It has a couple of 50/51 relays upstream of it (not shown). I do not know what the lines going through the CT meen, does it meen that it is zero sequenced?
  5. General Electrical Discussion
    I was wondering what the difference is between 51G, 51Gs, and 51N Relays? In addition, how do they relate to current transformers (How could you tell which is which based on a schematic of a power system or other ways)?
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