Neutral Bonding to Ground on WYE Generators

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daniej2

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We assembled generator package units from 208 to 12,470 volts with a range up to 2Megg. I noticed that some of these units consist of a bond from the neutral buss to the chassis ground. The transformers that we connect to are an open neutral WYE and Delta type. I was told that UL is requiring these units to have this connection. I've been trying to find some information on this with limited sucess. Second, should the bond be removed for testing since a neutral is not provided from the generator to the neutral buss of the transformer and/or to the Delta Transformer. Thanks in advance Jim
 
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