China Electrical Power Transformer manufacturer

Pad Mounted Transforme Outdoor Three Phase Box Type 550KV Power Transformer Distribution Substation with steel structure

Product Details:
Place of Origin: China
Model Number: ZGS
Payment & Shipping Terms:
Minimum Order Quantity: 1
Price: 2000-200000/piece
Packaging Details: wooden case
Delivery Time: 30 days
Payment Terms: LC T/T
Supply Ability: 5000 pieces/year
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Detail Information

Material: Stainless Steel Standard:: IEC60076
Coil Structure:: Toroidal Color:: Customized Or Gray
Rated Capacity:: 315-2400kw Cooling:: AN Or AF
Application:: Industrial Power Supplies Rated Voltage:: 11kV-33kV
Material:: Copper Or Aluminum Usage:: Power
High Light:

power distribution substation


electrical distribution substation

Product Description

750kVA Pad Mounted Transformer 13.8kV-400/230V 60Hz with loop feed



Step-up substation is designed as box type and specially for new energy generation industry, which can adjust the low voltage from inverter station to high voltage and then run in power grid. So a box-type inverter station and a step-up station can be integrated into one power generation station. It’s widely applied in Solar Energy Power Plant, Wind Energy Power Plant and Nuclear Power Plant, etc.




1. One of the drafters of the National Standard Mine Flameproof Mobile Substations (GB/T 8286-xxxx ), which will replace the existing national standard (GB/T 8286-2005 ) and it was submitted for trial in Beijing.

2. +20 years experience R&D team, derived from a 60 years of history transformer manufacturer in Changsha, Hunan, China since 1956.

3. Full range of transformer types with customized functions are available.

4. CE & ISO certificated.



Below are the tests conducted by Varelen before delivery. Other tests required by clients can also be done accordingly.

Insulation resistance

Resistance of all windings

Check voltage ratio and vector group

No-load test at rated frequency and rated voltage

Impedance test

Withstand voltage test

Induced over-voltage withstand test

Partial discharge measurement


Product Features

1. Intelligient control, integrated with enclosure, compact structure and high environmental adaptability for outdoor applications.



2. The three-limb iron core is made of oblique cut Grain-oriented, seven-step silicon steel laminations insulated on both sides, guaranteeing low losses and low noise. These values are even improved by laser treatment. It is protected on the surface with a flash-proof varnish in order to prevent the sheet from corrosion and to reduce the noise.


3. Clamping frame: it is processed by CNC cutting, bending and then one-time punch forming, the hole’s size is accurate and the appearance looks delicate.


4. The winding coil is made of oxygen-free copper, class H for main insulation materials and coil is insulated by NOMEX paper of DUPONT brand, LV winding is isolated by copper foils. All these make the heat-resistant is up to 220℃, with excellent overload capacity and low loss, but high efficiency.



5. Varelen practices strictly exclusive casting system of F(155℃) or H(180℃), and the epoxy resin is injected and casted in the vacuum machine, so it’s highly insulated, dust-proof and moisture-proof, which ensures stable and reliable performance

Pad Mounted Transforme Outdoor Three Phase Box Type 550KV Power Transformer Distribution Substation with steel structure 0

Main specifications:

Dry-type transformer type Cast resin
Manufacturing standards IEC62271
Rated capacity up to 25MVA
Rated output voltage Up to 36KV
Rated output power 315 ~2400kW
Phases Single or three phase
Tapping With tapping links or on-load tap changer
Impedance On request
Frequency 50Hz or 60Hz
Vector groups Dy, Yy, Yd as standard. Other on request
class insulation According to IEC 60085, Class F or Class H
Temperature rise With ambient temperature in accordance with IEC 60076-11
Type of cooling AN/AF
IP rate IP00 to IP54
Environment class E2
Climate class C2
Fireproof class F1


Pad Mounted Transforme Outdoor Three Phase Box Type 550KV Power Transformer Distribution Substation with steel structure 1


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