Product Introduction

VOUCHIVAN supplied 2 units of 1600 kVA epoxy resin cast dry type transformer to South Africa in 2022. 

The rated power of the dry type transformer is 1600 kVA with AN/AF cooling, the primary voltage is 22 kV with ±2*2.5% tapping range(NLTC),the secondary voltage is 0.42 kV, they formed a vector group of Dyn11.

The HV and LV cables are top entry, an 800 * 400mm opening is provided on the top of the enclosure for HV cable incoming, an 400*400mm opening is provided on the top of enclosure for LV cable incoming. Which is sealed with temporary low-carbon steel plate. The shock proof rubber pad is installed at the top of the transformer, which has excellent isolation effect and can reduce the impact of live load and seismic force on the transformer. There are three surge arresters installed on the enclosure and connected to each phase of HV terminal.

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

1600 KVA Dry Type Transformer specifications and data sheet

1600kVA-22/0.42kV Transformer Manufacturing Process

Transformer Winding:

Transformer Enclosure

Finished 1600kVA-22/0.42kV Transformer

The epoxy resin dry type transformer has the characteristics of good electrical performance, strong lightning impact resistance, strong short-circuit resistance, small size, and light weight. The temperature display controller can be installed to display and control the operating temperature of the transformer windings to ensure the normal service life of the transformer.

Packing and Delivery

Installation Commissioning and Operation

Dry type transformer routine tests

1.     Separate-source voltage withstand test

2.     Induced voltage test

3.     Voltage ratio measurement and check of polarities and connections

4.     No-load current and no-load loss measurement

5.     Winding resistance measurement

6.     Short-circuit impedance and load loss measurement

7.     Partial discharge measurement in accordance with IEC 60726

FAQ

1.      How soon can you delivery the transformer?

It depends on the quantity and capacity of the transformer, normally within one month since the date drawing confirmed by buyer.

2.      How long can you provide the quality warranty?

12 months since the date transformer operated.

3.      What payment method do you accept?

T/T (wire transfer), L/C both accepted.