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Non-encapsulated dry-type transformer1
Non-encapsulated dry-type transformer2
Non-encapsulated dry-type transformer3
Non-encapsulated dry-type transformer4
Non-encapsulated dry-type transformer1
Non-encapsulated dry-type transformer2
Non-encapsulated dry-type transformer3
Non-encapsulated dry-type transformer4

Dry-type transformer

Non-encapsulated dry-type transformer

The SG(B) series is an open-type, non-encapsulated dry-type transformer. The windings of this new product are manufactured using the Vacuum Pressure Impregnation (VPI) process and feature a non-encapsulated structure (OVDT); the thermal insulation class is typically Class H (insulation system temperature: 180°C; reference temperature: 145°C; winding temperature rise: 125K).

Product Details Standard Specifications Solutions Related Products

Product Details

The SG(B) series open-type, non-encapsulated dry-type transformer serves as an ideal replacement for oil-immersed distribution transformers and represents a high-performance option among dry-type transformers. It is particularly well-suited for critical locations such as urban power grids, high-rise buildings, business centers, theaters, hospitals, hotels, tunnels, subways, underground power stations, laboratories, railway stations, terminals, airports, and prefabricated substations.

Standard Specifications

SPECIFICATIONS

RatedVoltage

(kVA))

HighVoltage

(kV)

Tap Range

Low Voltage

(kV)

Connection

Mode

No-
load Loss
(W)
Load
Loss

No-load Current

(%)

Impedance

(%)

30

6

6.3

6.6

10

10.5

11

+5\%+2\x2.5% 0.4 Dyn11 / Yyn0 190 760 2.0 4
50 270 1070 2.0
80 370 1480 1.5
100 400 1690 1.5
125 470 1980 1.3
160 540 2280 1.3
200 620 2710 1.1
250 720 2960 1.1
315 880 3730 1.0
400 980 4280 1.0
500 1160 5230 1.0
630 1340 6290 0.85
630 1300 6400 0.85 6
800 1520 7460 0.85
1000 1770 8760 0.85
1250 2090 10300 0.85
1600 2450 12500 0.85
2000 3050 15500 0.70
2500 3600 18400 0.70
1600 2450 13900 0.85 8
2000 3050 17100 0.70
2500 3600 20200 0.70

Solutions

High-quality dry-type transformers with flame-retardant, low-noise and compact design. Compliant with national standards for safe and quiet operation.

01  Urban Civil Building Sector

Solutions

Premium dry-type transformers with strong overload resistance and long service life. Exceeds industry standards for efficient infrastructure power systems.

02  Infrastructure Sector

Solutions

High-efficiency specialized transformers with low loss and anti-harmonic features. Optimizes energy conversion for greener and smarter new energy projects.

03  New Energy Sector

Solutions

Advanced power transmission equipment with strong insulation and digital monitoring. Compliant with grid standards for robust and efficient modern power systems.

04  Power Industry Sector

Related Products

After-Sales Service

01

Rapid Response

The engineering project team provides full-process support from installation guidance to industrial optimization. Through remote video and on-site communication, technical issues are quickly resolved to ensure stable equipment operation.

Technical Guidance

Regular Inspections

02

Technical Empowerment

Provide professional training covering installation, commissioning, and troubleshooting. Through digital technical disclosure, ensure the project site has independent operation and maintenance capabilities, improving global delivery quality.

O&M Practice

Remote Guidance

03

Quality Assurance

Relying on standardized mass production and a complete traceability mechanism, ensure long-term supply of core components, effectively reduce global supply chain risks, and maintain consistent equipment quality.

National Standard Quality

Stable Supply

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