Epoxy Resin Transformers 800kVA/10/0.4kV, Shipped To The Project Site - News

Introduction

The moment the final temperature rise test results are confirmed, these epoxy cast resin dry-type transformers are ready for duty. As we watch them being hoisted securely onto the truck, our hearts swell with the unique pride and responsibility of their creators.

Product Features

Voltage Class	35kV and below
Capacity	30~3150kVA
Frequency	50Hz or 60Hz
Vector Group	Dyn11, Yyn0, or as per customer requirements
Cooling Method	AN or AN/AF
Insulation Class	F or H
Protection Level	IP00, IP20, IP30, or others
Environmental Conditions	Altitude below 1000 meters, ambient temperature below 40°C. (Customizable for special environments)

Optional Accessories

Cooling System

The series adopts both Air Natural (AN) and Air Forced (AF) cooling methods. The use of a radial-flow air cooling device can increase the transformer capacity by 40%. It is important to note that the forced air cooling equipment is intended for short-time overload protection and is not recommended for continuous long-term operation.

Temperature Controller

The temperature display and control unit employs an intelligent signaling thermometer. It monitors and regulates the transformer through temperature sensing elements pre-embedded at the end of the low-voltage winding. The controller automatically tracks and cyclically displays the temperature values of all three phases during operation.

Enclosure

The surface of the enclosure panels undergoes phosphating and electrostatic spraying treatment, providing high corrosion resistance. Its modular design offers robust mechanical strength and allows for convenient on-site assembly. Both the front and rear are equipped with access doors and ventilation openings. The enclosure color can be customized according to customer requirements.

Casting Process

The wound coils, after pre-drying, are transferred to the casting chamber of an epoxy resin vacuum casting equipment for vacuum drying to remove moisture and gases from the insulation. Simultaneously, materials such as epoxy resin and curing agents are continuously degassed in separate preparation tanks. Upon completion of this treatment, the computer-controlled system precisely injects various chemical materials into the mold according to the set ratio via a precision metering system. Following casting, the coils are thermally cured in an oven to form the final solid coils.

Quality Control

Test Items	Test Type	Test Items	Test Type
Winding Resistance Measurement	Routine Test	Induced Voltage Withstand Test	Routine Test
Voltage Ratio Measurement and Vector Group Verification	Routine Test	Partial Discharge Measurement	Routine Test
No-Load Loss and No-Load Current Measurement	Routine Test	Sound Level Measurement	Type Test
Load Loss and Impedance Voltage Measurement	Routine Test	Lightning Impulse Test	Type Test
Insulation Resistance Measurement	Routine Test	Temperature Rise Test	Type Test
Applied Voltage Withstand Test	Routine Test	Short-Circuit Withstand Test	Special Test

Answering Demand

VKE Transformer provide:

Electrical solutions that reduce energy consumption, improve power reliability, and enhance safety and comfort in living and working environments.

Hydraulic and electrical solutions that both increase machine productivity and save energy.