High-Quality China Suppliers Factory SG(B)10 Series 10kV Non-encapsulated Coil Dry Type Power Transformer for Reliable Power Supply Factories, Companies
High-Quality China Suppliers Factory SG(B)10 Series 10kV Non-encapsulated Coil Dry Type Power Transformer for Reliable Power Supply Factories, Companies
High-Quality China Suppliers Factory SG(B)10 Series 10kV Non-encapsulated Coil Dry Type Power Transformer for Reliable Power Supply Factories, Companies
High-Quality China Suppliers Factory SG(B)10 Series 10kV Non-encapsulated Coil Dry Type Power Transformer for Reliable Power Supply Factories, Companies
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High-Quality China Suppliers Factory SG(B)10 Series 10kV Non-encapsulated Coil Dry Type Power Transformer for Reliable Power Supply Factories, Companies
High-Quality China Suppliers Factory SG(B)10 Series 10kV Non-encapsulated Coil Dry Type Power Transformer for Reliable Power Supply Factories, Companies
High-Quality China Suppliers Factory SG(B)10 Series 10kV Non-encapsulated Coil Dry Type Power Transformer for Reliable Power Supply Factories, Companies
High-Quality China Suppliers Factory SG(B)10 Series 10kV Non-encapsulated Coil Dry Type Power Transformer for Reliable Power Supply Factories, Companies

High-Quality China Suppliers Factory SG(B)10 Series 10kV Non-encapsulated Coil Dry Type Power Transformer for Reliable Power Supply Factories, Companies

The SG(B)10 series 10kV non-encapsulated coil dry type power transformer is a top-tier three-phase unit, featuring a UL-approved NOMEX insulation system. This transformer is designed for safety, reliability, and energy efficiency, making it an ideal choice for various demanding environments. With its exceptional fire resistance and low maintenance requirements, it stands out among products from other suppliers. The advanced design and optimized structure, combined with low partial discharge levels, reduced no-load and load losses, and minimized noise, ensure high-performance operation even in high-humidity conditions. This versatile transformer is perfect for applications in high-rise buildings, airports, hospitals, power plants, and more. As a leading China factory, we provide superior power solutions that guarantee a stable power supply in any critical setting
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Product Description

Type & Meaning

SG(B)10-3 Dry Type Transformer Model Breakdown
No. Meaning
1 Three-Phase
2 Dry Type
3 Low-Voltage Foil-Wound Coil
4 Performance Level Code
5 Rated Capacity (kVA)
6 Voltage Class (kV)

Product Features

  • The carefully designed coil structure and vacuum impregnation process result in low partial discharge for the SG(B)10 transformer, with no cracking or insulation degradation throughout its service life.
  • The high-voltage side adopts a continuous winding, and the low-voltage side uses foil winding. The whole unit undergoes vacuum impregnation and curing, supported by high-strength ceramic insulators, providing excellent resistance to sudden short-circuit currents.
  • Flame-retardant, self-extinguishing, non-toxic, and fireproof design ensures operational safety in harsh environments.
  • Almost no toxic smoke is generated when the SG(B)10 transformer is subjected to high-temperature open flames.
  • The transformer utilizes Class H (180°C) insulation, with DuPont NOMEX® paper (Class C) as the main insulation material.
  • The insulation layer is thin and uniform, enabling strong short-time overload capacity. It can operate at 120% load continuously and 140% load for 3 hours without forced cooling. Due to the non-aging properties of the material, it can immediately carry full load at -50°C.

Product Display

SG(B)10 Dry Type Transformer Unit
SG(B)10 Series Dry Type Transformer Enclosure

Technical Parameters

Technical Parameters of SG(B)10 Series 10kV Non-Encapsulated Coil Dry-Type Transformers

Rated Capacity (kVA) Voltage Combination and Tap Range Connection Symbol No-Load Loss (W) Load Loss (W)
145℃		 No-Load Current (%) Short-Circuit Impedance (%) Main Unit Weight (kg) Overall Dimensions (mm) Wheelbase (mm)
High Voltage (kV) Tap Changer (%) Low Voltage (kV) Length×Width×Height
(Without Enclosure)		 Length×Width×Height
(With Enclosure)
100 6
6.3
6.6
10
10.5
11		 ±5
Or
±2×2.5		 0.4 Yyn0
Or
Dyn11		 400 2160 1.7 4 750 1050×600×1000 1300×1000×1500 550×550
160 560 3100 1.5 950 1120×770×1100 1400×1100×1500 710×660
200 650 3970 1.4 1150 1160×770×1150 1450×1100×1500 710×660
250 750 4670 1.3 1358 1220×770×1200 1500×1150×1500 710×710
315 880 5610 1.1 1600 1260×700×1250 1550×1150×1550 710×710
400 1040 6630 1.1 1750 1320×770×1300 1600×1150×1600 710×710
500 1200 7940 1.0 2050 1360×820×1350 1650×1200×1650 760×710
630 1340 9770 0.9 6 2400 1420×820×1400 1700×1200×1700 760×710
800 1690 11560 0.75 2800 1500×980×1550 1850×1250×1800 920×820
1000 1980 13340 0.65 3200 1550×980×1600 1850×1250×1850 920×820
1250 2380 15640 0.6 3800 1600×980×1650 1900×1250×1900 920×820
1600 2730 18100 0.6 4500 1700×980×1700 2000×1300×2100 920×920
2000 3320 21250 0.5 5600 1800×980×1800 2100×1300×2200 920×920
2500 4000 24730 0.45 6300 1850×980×1900 2100×1300×2300 1020×920
Note: The overall dimensions and weight data in the table are for engineering reference only; specifications may vary based on design customization.

Applicable Standards

  • GB 6450-1986 Dry-Type Power Transformers
  • GB/T 10228-1997 Technical Parameters and Requirements for Dry-Type Power Transformers
  • GB/T 17211-1998 Loading Guide for Dry-Type Power Transformers
  • GB 1094.3-2003 Power Transformers - Part 3: Insulation Levels, Dielectric Tests and External Air Clearances
  • JB/T 10088-2004 Sound Levels for 6~500kV Power Transformers
  • JB/T 56009-1998 Product Quality Grading for Dry-Type Power Transformers

Frequently Asked Questions (FAQ)

What insulation class and materials are used in the SG(B)10 transformer?

The SG(B)10 transformer utilizes Class H (180°C) insulation, with DuPont NOMEX® paper (Class C) serving as the primary insulation material. This thin, uniform insulation layer ensures long-term thermal resistance without cracking or degradation over its operational life.

Can this dry-type transformer operate under severe cold and overload conditions?

Yes. The unit features strong short-time overload capability, permitting continuous operation at 120% load and 140% load for up to 3 hours without forced cooling. Due to the elasticity and aging-resistant qualities of NOMEX® insulation, it can be cold-started to full load at -50°C.

What are the key fire safety features of the SG(B)10?

The transformer is completely flame-retardant, self-extinguishing, non-toxic, and fireproof. In the event of an external fire, it does not release harmful toxic emissions and generates virtually no smoke when exposed to high-temperature flames.

How does the coil structure prevent partial discharge and short circuits?

The system uses continuous winding on the high-voltage side and foil winding on the low-voltage side. Treated by vacuum pressure impregnation (VPI) and curing processes, combined with high-mechanical-strength ceramic insulators, it delivers unmatched short-circuit withstand capabilities with low partial discharge.

What manufacturing standards do these dry-type transformers meet?

SG(B)10 transformers strictly adhere to standards such as GB 6450-1986, GB/T 10228-1997, GB/T 17211-1998, GB 1094.3-2003, JB/T 10088-2004, and JB/T 56009-1998, ensuring compliance in electrical performance, low noise, and insulation protection.

Can the unit be installed inside a protective enclosure?

Yes, the SG(B)10 series can be configured and supplied with or without heavy-duty protective metal enclosures depending on indoor or outdoor operational specifications and customer requirements.

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