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Hello, could someone help me with Omicron tool for overcurrent protection testing? As far as I understand if I have protection relay with START contact I can set the settings and omicron tool will automatically draw the trip curve, correct? Could you share some template file so I can take a look...

If you are interested in 6,6kv and 11kV ABB AIS SWBD info let me know. Have been working with it for 8years.

Hello RRaghunath, the SIEMENS SWBD was added quickly without our approval or questions, so they just did single bus, if we were consulted we would tell them that ring operation is prohibited (as we have the similar system for ships ring-net system (split ring, short time parallel function). The...

Hi, as far as I know, EF should be used at the beginning of the protected cable on the side of the power source. That is a reason we have DEF there. Both upstream CBs trip at the same time for DEF2low, if we supply only with one CBs everything is OK, The issue is when we feed with 2 of them.

Hi, you need to provide more information. What protection relay indicate? Differential trip? Overcurrent trip? do you have single line diagram?

Hello, all, I have a question/topic to discuss. We are currently building a ship with 11kV distribution. We have one DG running with neutral point resistor. The generator is feeding the main busbar where we have 2 feeders with MV circuit breakers. Both of the feeders are then connected to a...