China
Long Term
2020-12-18 11:20
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6MVA 13.8kV Power Transformer 6000kVA Transformer
Applicable Standards
6000kVA 13.8kV Oil immersed Power transformer
Description | Unit | |
Type | NA | SafeHerm™ |
Catalog No. | NA | 6000kVA/13.8kV |
Insulation Type | NA | Oil |
Cooling Method | NA | ONAN |
Coil Configuration | NA | 2 Winding |
Rating | kVA | 6000 |
Vector Group | NA | Ynd11, Yd11 |
Tapping Range | % | ±2×2.5 |
Primary Voltage | kV | 13.8 |
Secondary Voltage | kV | 4.16 |
No-load loss | kW | 6.30 |
Load-loss(75℃) | kW | 65.10 |
Impedance | % | 6.5 |
Short circuit current | % | 0.4 |
Primary Insulation Level | kV | LI95 AC34 |
Secondary Insulation Level | kV | LI160 AC19 |
Temperature rise | ||
Oil | ℃ | 60℃ |
| Windings | ℃ | 65℃ |
More rated capacities are available
Design Concept of our Transformer
Our transformers are designed and manufactured through verification from the design stage using design program, electromagnetic field analysis program, and structural analysis program
| Our transformers guarantee dielectric strength to withstand impulse voltage thanks to high-technology design which ensures low capacitance between winding and the ground and proper coordination of insulating material and solves creepage problem. | |
| Heat generated from coils which form electric circuit inside the transformer and heat from iron cores form magnetic circuit and is transmitted to insulating oil. Heat transmitted to insulating oil radiates to the air through the cooler. Cooling effect is very important as it is directly linked to insulation life and the capacity of the transformer. Our transformers lay emphasis on improving cooling performance and regulating temperature of the hottest spots by using an effective cooling system. | |
| Reliability of transformers manufactured by us is excellent because of winding and tank design which distributes mechanical force evenly in case of short circuit and supports short-circuit strength effectively. | |
Manufacture Procedure
01 Windings
Windings are composed of two parts, namely, a conductor and insulation material. For the conductor, we use high grade electrolytic copper or aluminium. Our Oil Immersed Transformers obtain high thermal capacity with the use of Epoxy coated Insuldur Kraft Paper, which has higher short time overload capacity than any other Kraft paper type.
02 Core
Core design is essential because it determines the transformer’s efficiency and noise level. For high dimensional accuracy, the core cutting processing of us is controlled by a computerized system. By Step-Lap core stacking, Our Oil Immersed Transformers attain to optimal characteristics for each customer.
03 Winding Support System
Coils are sized and clamped by being pressed with a special hydraulic fixture after assembly with the core. With Axial and Radial direction, we reinforce the winding support system. This secure structure helps withstand harsh short circuit forces.
04 Radiator
The transformer will be furnished with panel or corrugated radiators assuring that the temperature rise of the windings or oil will not exceed their specified limit when the transformer continuously operates at the rated full load.
More Capacities:
Glances in workshops:
Why choose us
| Hunan Electric Union is a diverse electric equipment manufacturer group located in middle south of China. |
| Limit Innovation |
We are in a traditional business since transformers and switches are developed over hundred years, even the so called “new technologies” of cast resin technology, vacuum arc distinguish technology and digital policy on our mature products |
| 1. Update products only if latest standards revision officially issued 2. Produce new products only if related technology are maturely developed. 3. Focus limit innovation on external updates to make products easy to use and transport. |
| Our Mission |
progress, the manufacturing industries have gradually entered a world-class level, and many well-known international companies have chosen to set up factories in China. so our mission is to provide the most cost effectiveproducts to world, and these products are transformed to meet relevant international Eventually, we could help the developing regions to update their energy quality and improve people’s life. |
Products 2. Gas insulated switchgear (GIS) 72.5-252kV 11. Compact Substation |
Services |
| Products Features We defined four rules to estimate our products, 1. Standards: All products should comply with IEC or IEEE standard codes. 2. Requirements: All products should comply with technical agreement from end user. 3. Easy to Use: All products should tested in factory and deliver with full, readable drawings and manuals. 4. Fit to Container: All products should designed to load on a container. |
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