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25KVA Three Phase Photovoltaic Transformer 3 Phase Isolation Transformer 400V 380V

25KVA Three Phase Photovoltaic Transformer 3 Phase Isolation Transformer 400V 380V

3 phase transformer

three phase power transformer

Place of Origin:

Shanghai, China

Brand Name:

Ewen Power/OEM/ODM


CE, ISO:9001

Model Number:


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Product Details
Product Name:
Three Phase Photovoltaic Transformer
Rated Power:
Input Voltage:
Output Voltage:
Photovoltaic Power Generation/Time Relay
Class F
Payment & Shipping Terms
Minimum Order Quantity
1 pc
Packaging Details
Wodden Case
Delivery Time
According to Quantity
Payment Terms
Supply Ability
600 pcs per Month
Product Description

25KVA Three Phase Photovoltaic Transformer 3 Phase Isolation Transformer 400V 380V


1. Quick Details


Product name: three phase transformer

Product model: SG-25KVA

Brand: Ewen

Place of origin: Shanghai, China

Rated capacity: 25KVA

Phase: three phase


Input voltage: 380V/400VAC

Output voltage: 380V/400VAC

Input current: 37.98A/36.08A

Output current: 37.98A/36.08A

Input display: pointer meter/input voltage

Output display: pointer meter/output voltage


Working efficiency: 98%

Working frequency: 50Hz/60Hz

Working temperature: -10~45℃

Working altitude: Less than 2000m


Storage temperature: <80℃

Storage humidity: <90%

Storage altitude: <5000m


Insulation class: F

Insulation resistance: ≥2

Dielectrical strength: 3000vac/min

Wiring way: △/Y, Y/Y, Y/△ etc

Cooling method: air cooling

Temperature rise: <80℃


2. Product Overview


The product introduced here is a three phase photovoltaic transformer with 25KVA rated capacity. Its input voltage is 380V or 400V. Its output voltage is 380V or 400V too. It is mainly used in photovoltaic power generation. The photovoltaic panel collects the direct current, which is transformed into alternative current through an inverter. However, the alternative current transformed through the inverter is not purified. It is full of impurities. Under this circumstance, the three phase isolation transformer would function in eliminating all the impurities and get the alternative current purified. In this way, the alternative current could be connected to the power grid. So three phase isolation transformer is an important part in photovoltaic power generation.


3. Product Features

Anti-interference The transformer is an isolation transformer, which could effectively reduce the interference of harmonics.
Safety Because the primary winding is separated from the secondary one, the transformer is designed for the users' safety.
Time relay design There is a time relay with this transformer, through which you could set the time to power on and power off.
Full capacity The rated capacity of this transformer is 25KVA, which is full capacity.
Clear input and output display The primary and secondary voltage is clearly shown on the pointer meters.


4. Pre-shipping Tests

Before leaving the factory, every product should pass a series of vigorous tests, performed with various measurements.


Necessary Tests
Appearance (enclosure, windings, small parts) Insulation resistance
Winding resistance Voltage ratio check
Short circuit impedance and load loss No load loss and current
Optional Tests
Temperature rise test Efficiency
Connection method Inrush current test
Waterproof test Frequency


There are necessary tests and optional tests. If you have any special requirement, please tell us in advance.

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