Product Introduction

The 250 kVA epoxy resin cast dry type transformer was delivered to Georgia in 2022 for a national project. Transformers are used on the highway.

The rated power of the dry type transformer is 250 kVA with AN cooling, the primary voltage is 10 kV with ±2*2.5% tapping range(NLTC), the secondary voltage is 0.4kV with delta star connection.

Cast resin technology provides excellent insulation and environmental protection, this together with the foil winding technology inside the resin offers the ultimate dry type transformer in terms of dielectric performance and short circuit withstand ability and ensures long term reliability for both distribution and special applications. cast resin transformers can be supplied with either aluminum or copper windings together with possibility of class F or class H insulation system, they can be designed to in-door or out-door installation with different enclosures.

We ensure that each one of our delivered units has undergone rigorous full acceptance testing. We provide one-package service from consulting, quoting, manufacturing, installation, commissioning, training to after sale services, our products are now operating in more than 50 counties in the world. We aim to be your most reliable supplier as well as your best partner in business!

Advantages

Fire resistant /Self-extinguishing(F1)

Environmental class(E2) and climatic class (C2)

From IP00-IP56 enclosure with AN, AF, ANAF or AFWF cooling

Maintenance free

Environmental friendly ,＞90% of material recyclable

Temperature control system

Built-in PT100 probes in 3 phase windings to detect the real-time temperature of windings and cycle display them in the digital screen.

Open circuit alarm and fault self-check alarm display and signal output.

3 stages automatically actions while the temperature reached to the set value, 1st stage the cooling fans start automatically, 2nd stage high temperature alarm,3rd stage over temperature trip.

Fans manual/auto control switch, timing start/stop, history data output.

4-20mA current output

RS485 Modbus communication protocol

Environment temperature measurement

Core temperature measurement

Scope of Supply

Product: resin cast dry type transformer

Voltage level: up to 35KV

Rating level: up to 20MVA

The transformer can be designed according to customer’s requirements

Technical Data Sheet

250 KVA Dry Type Transformer specifications and data sheet

250kVA-10/0.4kV Transformer Drawing

250 kVA transformer diagram drawing and size.

Finished 250kVA-10/0.4kV Transformer

How to solve the abnormal temperature rise?

1.Modify or replace the instrument

2.Reduce the load, balance the load of each phase, increase the transformer capacity

3. Change the wiring

4.Clean the dust

FAQ

1. Where is your main market?

We had exported our transformers to more than 50 countries in the world, our main market is Africa countries, South and North American countries, and Asia countries.

2. What certificate do you have?

We have KEMA, CESI, CTQC type test report for our transformers.

3. How long is your delivery time?

30 days after drawing confirmed by buyer for distribution transformers below 5000kva, bigger transformers depend on the capacity and components, normally 30-90days(with imported components)