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Transformer can be Free breathing or hermetically sealed and are supplied complete with fittings to suit individual specifications. Hermetically sealed transformers can be either oil or synthetic liquid filled and have the advantage of being virtually maintenance free. Synthetic liquid filled units can be used indoors in environments where oil cannot be accepted. The high voltage flanges of the transformers are suitable for direct coupling to ring main units fuse switches or oil switches and the low voltage flanges for direct coupling to distribution pillars to form a complete Substation.
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