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VPI Dry-Type Transformer

Designed for reliable power distribution in commercial and industrial facilities, the VPI dry-type transformer uses vacuum pressure impregnation technology to enhance winding insulation and mechanical strength. Its oil-free construction, efficient air cooling, and accessible design support dependable operation across a wide range of indoor electrical installations.

15–5,000 kVA

Rated Capacity

Up to 35 kV

Rated Voltage

VPI Dry-Type

Type

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technical specifications


category

specification

rated capacity

15–5,000 kVA

rated voltage

Up to 35 kV (HV Class)

vector group

Dyn11 / Dyn1 (three-phase configurations)

impedance

4–8% (depending on capacity and design)

cooling method

AN / AF

insulation level

According to IEC 60076-3 and applicable voltage class

tap changer

Off-Circuit Tap Changer (OCTC), where applicable

frequency

50 Hz / 60 Hz

applicable standards

IEC 60076-11 / IEC 60076-1 / IEC 60076-3

operating conditions


category

specification

ambient temperature

−25°C to +40°C

relative humidity

≤ 95% (non-condensing)

altitude

≤ 1,000 m (standard configuration)

installation environment

Indoor electrical rooms with adequate ventilation and protection from direct moisture

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