GE Multilin T60 settings question
GE Multilin T60 settings question
(OP)
GE Multilin relays are not popular here and we haven't experience with them. Local utility has several Multilin relay protections installed by foreign contractor. They had several wrong trips of transformer differential protection T60 during out-of-zone ground faults. During inspection of settings today we found that it is wrongly set the following transformer parameter: Winding 3/ Grounding/ Not within zone. Actually that winding has solidly grounded neutral point. Parameter was changed accordingly to: Within zone, what I hope should resolve the problem.
But my question is for the next parameter: Winding 3/Resistance. Default value for this parameter is 10 Ohms. I suppose it is resistance of the neutral grounding, and in our case (solidly grounded) it should be set to 0 Ohms. But in the Manual for T60 I cannot find any explanation about that parameter.
Could somebody with experience with that protection help me with understanding of this parameter ?
But my question is for the next parameter: Winding 3/Resistance. Default value for this parameter is 10 Ohms. I suppose it is resistance of the neutral grounding, and in our case (solidly grounded) it should be set to 0 Ohms. But in the Manual for T60 I cannot find any explanation about that parameter.
Could somebody with experience with that protection help me with understanding of this parameter ?
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It may be like this in theory and practice, but in real life it is completely different.
The favourite sentence of my army sergeant






RE: GE Multilin T60 settings question
RE: GE Multilin T60 settings question
RE: GE Multilin T60 settings question
We seldom set that function. We just leave it at the default 10 ohm. If the client wants to use that feature, they can dig up the data and program the relay.
RE: GE Multilin T60 settings question
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It may be like this in theory and practice, but in real life it is completely different.
The favourite sentence of my army sergeant