SZ13-M-2500/10 - TAIXUANTECH

SZ13-M-2500/10 Three-Phase Oil-Immersed Hermetically Sealed Power Transformer

10kV Oil-Immersed Distribution Transformer Series

SZ13-M-2500/10 Three-Phase Oil-Immersed Hermetically Sealed Power Transformer

The SZ13-M-2500/10 is a three-phase oil-immersed fully sealed distribution transformer with an on-load tap changer, rated capacity of 2500kVA and a high-voltage side rating of 10kV. The transformer features a fully sealed tank structure that isolates the transformer oil from air, effectively delaying insulation aging. It adopts ONAN (Oil Natural Air Natural) cooling, ensuring reliable heat dissipation under natural oil circulation and air convection. The core is made of high-quality cold-rolled silicon steel, and both high and low voltage windings use oxygen-free copper conductors. With the on-load tap changer, it can automatically regulate voltage without interrupting power supply, making it ideal for grids with frequent voltage fluctuations. The product is designed with S13 loss level, complying with GB/T 6451-2023 technical requirements for 10kV distribution transformers. It is suitable for 10kV distribution systems, providing reliable power supply for industrial, commercial, and agricultural applications with higher load demands.

Industrial & Commercial Utility & Grid

Rated Capacity: 2500 kVA
Rated Voltage Ratio: 10/6.3 kV
Connection Group: Dyn11
Cooling Method: ONAN
Energy Efficiency Class: N/A
Standard：IEC 60076, GB/T 6451-2023

Product Details

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Product Model SZ13-M-2500/10

No-Load Loss ≤2.14 kW

Rated Capacity 2500 kVA

No-Load Current ≤0.32%

Phase 3-phase

Load Loss (75°C) ≤21.6 kW

Rated Voltage Ratio 10/6.3 kV

Short-Circuit Impedance 5.0%

HV Tapping Range ±4×2.5%

Temperature Rise Limit Top oil ≤55K, Winding ≤65K

Rated Frequency 50 Hz

Noise (Sound Pressure Level) ≤62 dB(A)

Connection Group Dyn11 (Yyn0 available upon request)

Protection Degree IP45

Cooling Method ONAN

Standard IEC 60076, GB/T 6451-2023

Insulation Class A, LI75 AC35 / AC5

Energy Efficiency Class N/A

01.

Core advantages

On-Load Tap Changer (OLTC)

Equipped with an on-load tap changer, the transformer can automatically regulate voltage without interrupting power supply. Ideal for grids with frequent voltage fluctuations.

Low Loss Design (S13 Level)

Optimized core and coil design achieves low no-load and load losses, complying with GB/T 6451-2023 technical requirements for 10kV distribution transformers.

Fully Sealed Structure

Fully sealed tank isolates transformer oil from air, slows down insulation aging, and extends service life with minimal maintenance.

02.

Application scenarios

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01.

Authoritative Certification

Our transformers are CE certified, ensuring full compliance with EU safety, health, and environmental standards.

Our transformers are UL certified, confirming they meet rigorous ANSI/IEEE safety standards for North American market entry.

ASTA

Our transformers have obtained ASTA type-test certification, verifying IEC 60076 compliance.

EAC

Our transformers are EAC certified, ensuring compliance with safety and EMC regulations for the Eurasian market.

SASO

We provide SASO-compliant transformers and assist clients in obtaining the Batch Certificate of Conformity (CoC) through the SABER platform.

02.

Quality Assurance

Partner Factory Audit

Regular on-site audits of partner factories to verify ISO, CE, and UL certifications.

Full-Process Quality Control

From raw material inspection to pre-shipment final inspection, every unit is checked against specifications.

Comprehensive Test Reports

Each transformer includes a detailed factory test report. 100% full inspection before dispatch.

Third-Party Inspection Support

SGS, BV, or other accredited third-party inspection available upon customer request.

01.

Technical Documents

No data was found

02.

Certification Materials

No data was found

10kV Oil-Immersed Distribution Transformer Series – Full Specifications

10kV, 3-phase, 2-winding, oil-immersed, on-load tap-changer, distribution transformer, 200-2500kVA
Model	Rated Capacity (kVA)	HV (kV)	HV Tapping Range	LV (kV)	Vector Group	No-Load Loss (kW)	Load Loss (75°C) (kW)	Impedance Voltage (%)
SZ13-M-200/10	200	10，10.5	±4×2.5%	0.4	Dyn11	0.305	2.900	4.0
SZ13-M-250/10	250	10，10.5	±4×2.5%	0.4	Dyn11	0.350	3.420	4.0
SZ13-M-315/10	315	10，10.5	±4×2.5%	0.4	Dyn11	0.425	4.100	4.0
SZ13-M-400/10	400	10，10.5	±4×2.5%	0.4	Dyn11	0.510	4.950	4.0
SZ13-M-500/10	500	10，10.5	±4×2.5%	0.4	Dyn11	0.610	5.890	4.0
SZ13-M-630/10	630	10，10.5	±4×2.5%	0.4	Dyn11	0.770	7.260	4.5
SZ13-M-800/10	800	10，10.5	±4×2.5%	0.4	Dyn11	0.895	8.890	4.5
SZ13-M-1000/10	1000	10，10.5	±4×2.5%	0.4	Dyn11	1.090	10.400	4.5
SZ13-M-1250/10	1250	10，10.5	±4×2.5%	0.4	Dyn11	1.250	12.300	4.5
SZ13-M-1600/10	1600	10，10.5	±4×2.5%	0.4	Dyn11	1.540	14.700	4.5
SZ13-M-2000/10	2000	10，10.5	±4×2.5%	0.4	Dyn11	1.820	18.600	5.0
SZ13-M-2500/10	2500	10，10.5	±4×2.5%	0.4	Dyn11	2.140	21.600	5.0
Note： 1.Tapping range options are available. ±4×2.5% is shown as default in this table. Other tapping ranges are available upon request. 2.Other low voltages are available upon request. 3.Other vector groups are available upon request. 4.For IEC, ANSI, or other standards, or special voltage/frequency requirements, please contact us for a customized datasheet.

* For specific product requests, please Contact Us for customized solutions to your needs.

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SZ13-M-2500/10 Three-Phase Oil-Immersed Hermetically Sealed Power Transformer

10kV Oil-Immersed Distribution Transformer Series

SZ13-M-2500/10 Three-Phase Oil-Immersed Hermetically Sealed Power Transformer