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Fengguang Transformer
250 kVA 20 kV Dry-Type Transformer Low Loss — Fengguang Transformer SC(B)10 Cast-Resin Dry-Type Transformer

Standards

GB / IEC 60076

Testing

Routine report

Origin

China

SC(B)10 Type Dry-Type Transformers

250 kVA 20 kV Dry-Type Transformer Low Loss

250 kVA 20 kV SC(B)10 Cast-Resin Dry-Type Transformer

250KVA 20KV Low Loss Dry Type Transformer : The Preferred Energy-Saving Equipment for Industrial Power Distribution

Quick answer. 250 kVA 20 kV Dry-Type Transformer Low Loss is a SC(B)10 Cast-Resin Dry-Type Transformer rated 250 kVA at 20 kV. Typical applications include Commercial buildings, Light industry, Public infrastructure. It is designed to GB 1094.1 and IEC 60076, with routine tests recorded against the approved datasheet.
Product type
SC(B)10 Cast-Resin Dry-Type Transformer
Rated capacity
250 kVA
Voltage class
20 kV
Insulation
Cast epoxy resin, Class F/H
Cooling
AN / AF
Winding
Copper or aluminium (project-specific)

Final ratings, losses, impedance and dimensions are confirmed on the approved datasheet. Website values are for family selection.

  • Routine test report with the unit
  • English GA drawing and O&M manual
  • Copper or aluminium winding options
  • 50 Hz / 60 Hz and harsh-site options
GB 1094.1· GB/T 6451· IEC 60076· ISO 9001 / 14001 / 45001· CE where applicable

Product overview

250KVA 20KV Low Loss Dry Type Transformer : The Preferred Energy-Saving Equipment for Industrial Power Distribution

In the current power distribution industry, high energy consumption and poor operational stability of traditional transformer equipment are common pain points. Many enterprises face challenges such as high equipment maintenance costs and insufficient adaptability to various operating conditions. To address these issues, this 250KVA 20KV Low Loss Dry Type Transformer utilizes a new casting process and energy-saving structural design to specifically optimize the core performance of the equipment. This equipment effectively reduces power distribution operating losses, improves power supply stability, and is suitable for various harsh industrial scenarios. Compared to traditional equipment, it significantly reduces energy consumption and failure frequency, enabling enterprises to achieve long-term energy savings and cost reduction. In a complete power distribution system, it can complement and adapt to different operating conditions with Oil-Immersed Transformers. It can also be used with Box Type Substations, High And Low Voltage Switchgear , and is compatible with Electric Power Converters, Combined Photovoltaic Substations , and other photovoltaic and electrical control equipment. It is widely used in various power supply scenarios such as factory power distribution, photovoltaic power plants, commercial buildings, and industrial parks, making it a core energy-saving transformer in high and low voltage power distribution systems.

Core Product Features

1. Ultra-Low Loss Energy-Saving Performance: The equipment uses low-loss core materials and optimized winding structure, effectively reducing no-load and load losses. Long-term operation can significantly reduce enterprise power consumption, meeting the industry demand for energy conservation and emission reduction, and is suitable for power distribution scenarios with long-term continuous operation.

2. Safe, Maintenance-Free, and Highly Adaptable: Compared to traditional oil-immersed equipment, Dry Type Transformers have no oil leakage or fire hazards, excellent insulation performance, and outstanding moisture-proof, dust-proof, and anti-aging capabilities. They require no frequent inspections or maintenance and are suitable for various installation environments, including indoor and outdoor enclosed spaces.

Installation & maintenance notes

  • Compatible Installation: The equipment must be installed with a High and Low Voltage Switchgear of the corresponding specification. When networked with Combined Photovoltaic Substations or Electric Power Converters, voltage parameters must be calibrated in advance to ensure the stable and coordinated operation of the entire power distribution system.
  • Routine Maintenance: No complex daily maintenance is required. Simply clean the surface dust regularly and check the tightness of the wiring terminals to effectively extend the equipment's lifespan and reduce the probability of failure.
  • Frequently Asked Questions (FAQ)
  • Q1: What are the differences in applicable scenarios between this 20KV dry-type transformer and the Oil Immersed Transformer ?
  • A1: This product is safe and environmentally friendly, with no fuel hazard, making it more suitable for indoor, densely populated areas, and photovoltaic power stations. The Oil Immersed Transformer is more suitable for outdoor open spaces and large-capacity, long-distance power distribution scenarios. The two can be flexibly combined and used according to project conditions.
  • Q2: Can the equipment be used in integrated power distribution scenarios with photovoltaic support?

Design features

What the design is built around

Cast-resin insulation

Epoxy resin encapsulation protects windings from dust, humidity and accidental contact.

Fire-safe design

No insulating oil is used, making the unit suitable for indoor and fire-sensitive buildings.

Low partial discharge

Vacuum casting and controlled curing keep partial discharge low over the service life.

Low noise

Core and clamping design reduce structure-borne noise for hospitals, offices and data centres.

Typical specification

Specifications to confirm on the datasheet

Product type SC(B)10 Cast-Resin Dry-Type Transformer
Rated capacity 250 kVA
Voltage class 20 kV
Insulation Cast epoxy resin, Class F/H
Cooling AN / AF
Winding Copper or aluminium (project-specific)
Standards GB 1094.1, GB/T 6451, IEC 60076-11
Testing Routine tests, partial discharge and temperature-rise type tests

The table is a family-level starting point. The approved datasheet fixes the guaranteed values, drawing dimensions and test plan for the specific order.

Typical applications

  • Commercial buildings
  • Light industry
  • Public infrastructure
  • District heating and cooling
  • Indoor distribution rooms

Confirm before ordering

  • Rated capacity, voltage ratio and tap range
  • Impedance, fault level and parallel operation
  • Ambient temperature, altitude and enclosure
  • Winding material, losses and efficiency class
  • Terminations, protection and monitoring
  • Tests, inspection, packing and shipping limits

Buyer questions

FAQ for 250 kVA 20 kV Dry-Type Transformer Low Loss

What is 250 kVA 20 kV Dry-Type Transformer Low Loss best used for?
This model is specified at 250 kVA and 20 kV. It is used where the site load, fault level and environmental conditions match the approved datasheet. Share the load profile, ambient temperature, altitude and grid code and the design can be checked against the application.
What is the typical lead time for 250 kVA 20 kV Dry-Type Transformer Low Loss?
Standard distribution units typically ship in 25-40 days after drawing approval. Large power transformers and integrated stations are scheduled by design review, core and winding production, tanking, testing and packing. The exact date is confirmed in the quotation.
Which standards and tests apply to dry-type transformers?
Dry-type units follow GB 1094.1, GB/T 6451 and IEC 60076-11. Routine tests cover winding resistance, ratio, impedance, no-load and load loss, insulation resistance and power-frequency withstand. Partial-discharge and temperature-rise type tests are available.
Can a dry-type transformer be installed outdoors?
A standard cast-resin unit is intended for indoor, well-ventilated rooms. For outdoor use an IP enclosure, anti-condensation heaters and a corrosion class must be specified. In many coastal or dusty sites an oil-immersed or prefabricated station is a better fit.
How do I choose between copper and aluminium windings?
Copper gives higher short-circuit strength and a more compact winding; aluminium can reduce first cost for lightly loaded units. The choice depends on fault level, load profile, loss evaluation and the buyer's specification. Both are available.

Project inquiry

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Load, voltage class, site conditions, standards and required documents are enough to start. We reply through the inquiry thread.

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