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  • Users: gce1991
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  1. gce1991

    Generator Transformer vector group

    we have a power system with 132 kV/11 KV YYnd0 , 20 MVA Transformer and two TG's 12 MW and 16 MW connected to 11 kV with resistance earthing 400 A thro NGR. Now we want to add additional 22 MW TG at the 11 kv level.In order to isolate the earthing of new TG it is proposed high impedence...
  2. gce1991

    Power contactor to work at 360 to 800hz

    Dear All, I am in a stange situation to design a DOL starter for a Matrix controller to be used in aero space application .The Voltage is 3 Phase 200V and frequency range is 360 to 800 HZ and rated current is approximatly 100A. I need to select the Moulded Case Circuit Breaker (MCCB), power...
  3. gce1991

    Curent transformer ANSI standard

    Hi , I need clarification when I specify accuracy class of a current transformer as 0.3 B 1.8 what exactly it means? Regards ESW,
  4. gce1991

    Transformer sizing

    Dear All, I need to size a step down tansformer for 3 PH, 50Hz ,600 H.P ,6600V motor .The Voltage to the primary of the transformer is 11000V .Please assume typical fault level . Thanks in advance Regards Eswaran ESW,

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