Hermetically Sealed Transformer

The hermetically sealed oil transformers are normally manufactured with a sealed tank equipped with fins that allow the expansion at the temperature variations.

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99 in stock

Delivery from: 2 weeks

Professional installation available

Quality approval

The hermetically sealed oil transformers are normally manufactured with a sealed tank equipped with fins that allow the expansion at the temperature variations. The tightness of the tank is up to 0.5 Bar. This type of transformer is the most widely used in the world. In the hermetically sealed transformer, the oil does not come into contact with the air and its electrical properties are therefore not compromised, ensuring a long life span of the transformer. For powers exceeding 3150kVA, or in case of a transformer with radiators, the transformer can still be hermetically sealed by means of a nitrogen cushion.

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Power

50 kVA - 5MVA

Voltage Class

1.1kV - 52kV

Material Temperature Classes

A , F

Environmental Temperature

-60 a + 60

Winding Materials

Aluminium or Copper

Oil

Mineral, Silicone, Ester or Vegetable Type

Accessories

Overpressure valve, thermometer, oil level, anti-vibration device, protective boxes

Strengths

Outdoor installation even with aggressive environmental conditions; compact size for high voltages, excellent resistance to overvoltages in resonance