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Stockinish Isle of Harris

Installation & commissioning of 1 x 2.5MVA, 33/11.5kV transformer

Client:
Undisclosed

Stockinish, Isle of Harris

Scope of work

Design, manufacture and testing of 1 x 2.5MVA, 33/11.5kV transformer.
Full in-house routine testing & partial discharge.
Delivery of new 2.5MVA transformer from Winder Power, Leeds to Stockinish, Isle of Harris and off-loading using 100t crane off-loaded onto hydraulic skidding equipment which was then skidded 5m in the transformer housing and jacked down into position.

Disconnection and removal of the customers existing transformer located at Stockinish.

Full commissioning works as per the customers 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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