Answer / jatinder singh

Please do the megger testing of HV winding.May be the
winding was short circuited.

Answer / gurucharan singh

When cable burnt, it is clear that there was over current
in the 2.5mm2 cable. That means load connected may faulty,
or oversize then the capacity of 2.5mm2 cable current
carrying.

Answer / engr. l. o. osuji

Thanks to the respondent.I would like to tell him that no
load was connected besides linking Aa in accordance with
the method for the test. Also, note that similar 2.5mm2
cable has been used on a similar Unit Auxiliary 2.5MVA
11/3.3kV delta-star T/F and 60MVA 132/11kV star-delta T/F
respectively. No burning occurred. Test results were
satisfactory. This piece of information should guide any
contributor. Thanks.

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