DISTRIBUTION TRANSFORMERS – HERMETICALLY SEALED CATALOGUE GUIDE

DISTRIBUTION TRANSFORMERS – HERMETICALLY SEALED CATALOGUE GUIDE
Hermetically sealed oil-immersed distribution transformers according to standards EN 60076 and EN 50464, up to 36 kV.

Characteristics

• Rated power from 100 up to 2’500 kVA, operating voltages up to 36 kV, 50 Hz
• Hermetically sealed execution without air cushion
• Tapping range on primary voltage: ± 2x2,5% or according to customer request
• Maximum ambient temperature 40°C, average annual temperature 20°C
• Maximum temperature rise of copper 65 K, top oil 60 K, natural air cooling ONAN
• Maximum installation altitude 1’000 m above sea level
• High voltage bushings: plug-in bushings according to DIN 47636 or porcelain bushings according to DIN 42531 for indoor- or
outdoor installation
• Low voltage bushings: porcelain bushings according to EN 50386 with or without flat connection plate
• Compact and leightweight
• 2 loss ranges: normal losses and low-loss design
• Routine tests according to EN 60076
• Low-radiation execution with 8 point symmetric low voltage bushings on request
• Integrated oil retention vat on request (mounted between tank and chassis frame)
• Increased winding insulation and earthed screen between HV/LV windings for non-sinusoidal load on request
• Integrated safety detector, pressure relief valve, filling level indication on request

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