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Three-Phase Oil-Immersed Distribution Transformer

This three-phase oil-immersed distribution transformer (models: S20-M, S14-M, S13-M, S11-M) is independently developed by our company, covering a rated capacity of 30-2500kVA and high-voltage levels of 10kV/20kV/35kV. It is designed for power transmission and distribution, with stable performance, high efficiency, and compliance with national transformer quality standards. It is widely used in industrial, commercial, and rural power grid projects.

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High-Efficiency Oil Transformer Low-Loss Distribution Tx Short-Circuit Resistant Oil Tx Customizable Oil Transformer Certified 3-Phase Oil Tx

Product Advantage

Model description

Technical Parameters

Product Uses

FAQ

1. High Energy Efficiency & Low Loss: With Level 2 (S20-M) and Level 3 (S13-M) energy efficiency ratings, the no-load loss ranges from 65W to 2360W, and load loss (75℃) from 430W to 23200W. For 1000kVA models, load loss is only 8240W, saving 20% energy compared to traditional transformers. Keywords: high-efficiency oil-immersed transformer, low-loss distribution transformer

2. Strong Short-Circuit Resistance: Adopts a new insulation structure and multi-layer cylindrical windings made of high-quality oxygen-free copper, enhancing anti-short-circuit capability by 30% and extending service life to over 20 years. Keywords: anti-short-circuit transformer, long-life oil-immersed equipment

3. Customizable Specifications: Supports customization of high-voltage tap ranges (±2×2.5%, ±5%), low-voltage 0.69kV, and loss values to meet diverse project needs. Keywords: customizable transformer, 0.69kV low-voltage option

4. Reliable Quality Certification: Passed type tests by the National Transformer Quality Supervision and Testing Center, ensuring compliance with international standards (UL, CE). Keywords: certified oil-immersed transformer, national standard compliance

5. Stable Heat Dissipation: Mineral oil insulation ensures efficient heat dissipation, maintaining stable operation even in high-temperature environments (ambient temperature ≤40℃). Keywords: oil-insulated heat dissipation, stable operation transformer

三相型号描述

Rated Capacity （kVA）	Voltage Combinations			Connection Group Designator	No-load Loss（W）	Load Loss(75℃，W)	No-load Current(%)	Impedance Voltage (%)
Rated Capacity （kVA）	High Voltage(kV)	Tap Range	Low Voltage(kV)	Connection Group Designator	No-load Loss（W）	Load Loss(75℃，W)	No-load Current(%)	Impedance Voltage (%)
30	6 6.3 10 10.5 11	±2*2.5 ±5	0.4	Dyn11 Yzn11 Yyn0	65	455/460	0.30	4
50					80	655/625	0.24
63					90	785/745	0.23
80					105	945/900	0.22
100					120	1140/1080	0.21
125					135	1360/1295	0.20
160					160	1665/1580	0.19
200					190	1970/1870	0.18
250					230	2300/2195	0.17
315					270	2760/2630	0.16
400					330	3250/3095	0.16
500					385	3900/3710	0.16
630				Dyn11 Yyn0	460	4960	0.15	4.5
800					560	6000	0.15
1000					665	8240	0.14
1250					780	9600	0.13
1600					940	11600	0.12
2000					1085	14600	0.11	5
2500					1280	16900	0.11	5

Note:
1. For transformers with rated capacity of 500kVA and below, the load loss value above the slash in the table isapplicable to the Dyn11 or Yzn11 connection group, and the load loss value below the ramp line is applicable to theYyno connection group.
2. According to the needs of users, other high-voltage tap range transfomers can be provided.
3. According to the needs of users, a transformer with a low voltage of 0.69kV can be provided.
4. lf the user needs, other loss values can also be selected.
5. Due to the continyous update of the product. there will be some changes in the dimensions and product weioht inthe table, please refer to the appearance and size diagram provided at the time of ordering.

1. Industrial Parks: Powers heavy machinery, production lines, and auxiliary equipment, with high load-bearing capacity to adapt to fluctuating industrial power demands.

2. Urban Commercial Centers: Supplies electricity to shopping malls, office buildings, and hotels, ensuring stable power for air conditioning, lighting, and elevators.

3. Rural Power Grid Transformation: Suitable for agricultural irrigation, rural households, and small workshops, with customizable tap ranges to adapt to unstable rural voltage.

4. Power Substations: Acts as a core distribution component in 10kV/35kV substations, connecting high-voltage transmission and low-voltage end-users.

1. Q: Can the transformer be used in outdoor environments?

A: Yes, it is suitable for outdoor use, but ensure it is installed in a rainproof, well-ventilated area and avoid direct sunlight.

2. Q: What is the difference between Dyn11 and YynO connection groups?

A: Dyn11 has better anti-interference performance, while YynO is more suitable for low-voltage neutral point grounding systems; choose based on project needs.

3. Q: How often should the transformer oil be replaced?

A: Under normal use, replace the oil every 5 years; if oil moisture exceeds 30ppm, replace it immediately.

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