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Slough Berkshire

Installation & commissioning of 1 x 15/30MVA, 33/11.5kV transformers

Client:
Undisclosed

Slough, Berkshire

Scope of work

Design, manufacture and testing of 1 x 15/30MVA, 33/11.5kV power transformer.
The transformer was delivered fully built using a low loader then off-loading via mobile crane and lifted into position.

Full in-house routine & partial discharge testing.

Full commissioning works as per the customer’s specification which includes;

Insulation resistance of each winding, core & secondary circuits
Transformer ratio check
Vector group check by 3 phase low voltage energisation of transformer
Checks on all CTs & VTs for insulation resistance
Ratio & magnetisation curves
Operation of tapchanger through range & operation of limit switches
Operation of protection equipment
Oil sampling for routine
Water & dissolve gas analysis

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