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Pad-Mounted Transformer (American-Type)

Product Description

The ZGS-Z(H)-12/0.4kV pad-mounted transformer (also known as American-type prefabricated substation) serves as an important power supply unit in power distribution networks, placing the high-voltage load break switches and high-voltage fuses inside the transformer tank. The oil tank adopts a fully sealed structure, where the transformer oil within provides excellent insulation and heat dissipation performance. It offers the advantages of small size, light weight, convenient installation and maintenance, safety, reliability, and an aesthetic appearance. It is widely applied in outdoor power supply locations such as cities, residential communities, factories and mines, airports, wharves, and railways.

The ZGS-Z(H)-24/0.4kV pad-mounted transformer (also known as American-type prefabricated substation) serves as an important power supply unit in power distribution networks, placing the high-voltage load break switches and high-voltage fuses inside the transformer tank. The oil tank adopts a fully sealed structure, where the transformer oil within provides excellent insulation and heat dissipation performance. It offers the advantages of small size, light weight, convenient installation and maintenance, safety, reliability, and an aesthetic appearance. It is widely applied in outdoor power supply locations such as cities, residential communities, factories and mines, airports, wharves, and railways.

The ZGS-Z·G-40.5 pad-mounted transformer for renewable energy is a factory-prefabricated, outdoor compact power distribution solution that integrates high-voltage switchgear, a distribution transformer, and low-voltage distribution apparatus based on a specific wiring scheme. Designed for three-phase AC networks with a rated voltage of 40.5/0.4kV, it delivers efficient grid connection and power allocation. It is highly suitable for industrial zones, residential communities, and specialized environments characterized by high salt spray or high altitudes.

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Product Advantages

Pad-Mounted Transformer (American-Type)

ZGS-Z(H)-12/0.4kV | 24/0.4kV | 40.5/0.69(0.8)kV
ItemParameter
Maximum Equipment Voltage24kV
Rated Capacity100~800kVA
Rated Voltage20/0.4kV
Rated Frequency50Hz
Vector GroupYyn0, Dyn11
Tap Range±2*2.5%
Number of Phases3
Insulation LevelLightning Impulse Withstand Voltage (Full Wave, Peak)
Power Frequency Withstand Voltage 1min55kV
Low Voltage Side Power Frequency Withstand Voltage 1min (Main Circuit)2.5kV
Phase-to-Phase and Phase-to-Ground 1min (Control and Metering Circuit)2.0kV
Insulation Heat Resistance ClassA
Enclosure MaterialSteel Plate / Galvanized Steel / Stainless Steel, etc.
IP RatingIP54
Outline DimensionsSelected based on transformer capacity and type
ItemParameter
Maximum Equipment Voltage24kV
Rated Capacity100~800kVA
Rated Voltage20/0.4kV
Rated Frequency50Hz
Vector GroupYyn0, Dyn11
Tap Range±2*2.5%
Number of Phases3
Insulation LevelLightning Impulse Withstand Voltage (Full Wave, Peak)
Power Frequency Withstand Voltage 1min55kV
Low Voltage Side Power Frequency Withstand Voltage 1min (Main Circuit)2.5kV
Phase-to-Phase and Phase-to-Ground 1min (Control and Metering Circuit)2.0kV
Insulation Heat Resistance ClassA
Enclosure MaterialSteel Plate / Galvanized Steel / Stainless Steel, etc.
IP RatingIP54
Outline DimensionsSelected based on transformer capacity and type
ItemParameter
Maximum Equipment Voltage40.5kV
Rated Capacity4000kVA
Rated Voltage38.5/0.69 (0.8) kV
Rated Current60/2886.8A
Rated Frequency50Hz
Short-Circuit Impedance7.00%
Maximum Pressure60kPa
Vector GroupDy11
Tap Range±2*2.5%
Number of Phases3
Full Wave200kV±3%
Chopped Wave220kV±3%
Insulation Heat Resistance ClassA
Enclosure MaterialSteel Plate / Galvanized Steel / Stainless Steel, etc.
IP RatingIP54
Outline DimensionsSelected based on transformer capacity and type

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