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200kVA 20kV Oil-immersed Distribution Transformer S(B)13-NX3 Energy Efficiency Level 3

Specifications

Brand Name :

GuangGao

Model Number :

Certification :

ISO CESI UL KEMA

Place of Origin :

Guangzhou

MOQ :

Payment Terms :

T/T L/C

Packaging Details :

Export Standard Package

Phase :

Input Voltage :

6kV、6.3kV、6.6kV、10kV、10.5kV、11kV

Output Voltage :

0.4kV

Winding Material :

Copper / Aluminum

Core Material :

Silicon Steel Core / Amorphous Core

Application :

Power

Rated Capacity :

30-2500KVA

Warranty :

2 years

Vector Group :

Dyn11 Yzn11 Yyn0

Cooling Method :

ONAN

Standard :

IEC Standard

Name :

Oil Immersed Distribution Transformer

Description

20kV Oil-immersed Distribution Transformer S(B)13-NX3 Energy Efficiency Level 3

Product Specifications

20kV oil-immersed distribution transformer S(B)13-NX3 energy efficiency level 3
Capacity(kVA)	Voltage Combination			Vector group	No load loss (W)	Full Load Loss (W)	Short Circuit Impedance (%)
Capacity(kVA)	HV(kV)	H.V. Tapping Range	LV(kV)	Vector group	No load loss (W)	Full Load Loss (W)	Short Circuit Impedance (%)
30	20 20(10) or others	±5%/ ±2×2.5%	0.4	Dyn11 Yzn11 Yyn0	80	660/630	5.5
50					100	960/910
63					120	1140/1090
80					140	1370/1300
100					160	1640/1570
125					190	1980/1880
160					230	2410/2300
200					270	2850/2720
250					320	3340/3180
315					380	4000/3810
400					460	4720/4490
500					540	5640/5380
630					650	6480	6
800					780	7840
1000					920	10700
1250					1100	12500
1600					1330	15100
2000					1560	19100
2500					1870	22200
The full load loss “/” is followed by the data of the vector group Yyn0

* Above specification may be changed to improve performance.

* Transformer of other specification than listed above can be made to order.

Product Overview

1. Product Technical Attributes

This product is a three-phase oil-immersed distribution transformer, which mainly uses mineral oil as a dual-function medium—it not only undertakes the role of insulation and isolation but also realizes heat conduction and cooling. Compared with other types of transformers, its prominent advantage lies in high thermal cycle efficiency, which can quickly conduct the heat generated by the iron core and windings out. Additionally, it has significant competitive advantages in material selection and manufacturing costs, making it more suitable for cost-sensitive project requirements.
2. In-depth Interpretation of Model Parameters
"S(B)": As the core identifier of three-phase oil-immersed distribution transformers, "S" clearly indicates that the product is designed for three-phase power supply, adapting to mainstream three-phase power consumption scenarios; "B" represents that the low-voltage side adopts a foil winding structure. Compared with the traditional wire winding method, this structure can greatly reduce the DC resistance of the windings, reduce copper loss, and at the same time improve the current-carrying capacity and short-circuit impact resistance.

"13": It is a classic technical series code in the field of oil-immersed transformers. The corresponding design scheme has undergone long-term market verification, with mature technology in iron core loss control and oil tank structure stability, low operation failure rate, and controllable later maintenance costs.

"NX3": It is an adaptive model developed specifically for basic power distribution network scenarios. It can be compatible with conventional voltage levels (such as 10kV/0.4kV), meet the basic power supply needs of residential areas, small industrial areas, etc., and the installation and commissioning process is simplified.

"Energy Efficiency Class 3": It meets the national basic energy efficiency standards for oil-immersed distribution transformers. It has balanced energy efficiency performance under medium load rate (50%-70%) working conditions, and is suitable for projects that do not have extreme requirements on energy consumption and pay more attention to initial investment costs.