OEM SG(B)10 Type 10kV Series Non-encapsulated Coil Dry Type Transformer Suppliers, Company
OEM SG(B)10 Type 10kV Series Non-encapsulated Coil Dry Type Transformer Suppliers, Company
OEM SG(B)10 Type 10kV Series Non-encapsulated Coil Dry Type Transformer Suppliers, Company
OEM SG(B)10 Type 10kV Series Non-encapsulated Coil Dry Type Transformer Suppliers, Company
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OEM SG(B)10 Type 10kV Series Non-encapsulated Coil Dry Type Transformer Suppliers, Company
OEM SG(B)10 Type 10kV Series Non-encapsulated Coil Dry Type Transformer Suppliers, Company
OEM SG(B)10 Type 10kV Series Non-encapsulated Coil Dry Type Transformer Suppliers, Company
OEM SG(B)10 Type 10kV Series Non-encapsulated Coil Dry Type Transformer Suppliers, Company

OEM SG(B)10 Type 10kV Series Non-encapsulated Coil Dry Type Transformer Suppliers, Company

The SG(B)10 series 10kV non-encapsulated coil dry type power transformer is a three-phase unit designed with a NOMEX insulation system (UL approved). It offers safety, reliability, energy efficiency, fire resistance, and easy maintenance. With advanced design and reasonable structure, it excels in partial discharge level, no-load loss, load loss, noise, and high-humidity adaptability. Suitable for high-rise buildings, airports, hospitals, power plants, and more, it ensures stable power supply in demanding environments.

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Product Description

Type & Meaning

SG(B)10 Model Identification
No. Designation / Characteristic
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 ensuring optimal operational safety.
Almost no smoke is generated when the SG(B)10 transformer is exposed to burning under high-temperature open flame conditions.
The transformer uses Class H (180°C) insulation, with DuPont NOMEX® paper (Class C) as the primary insulation material.
The insulation layer is extremely 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. Thanks to the non-aging and elastic properties of the insulation material, it can immediately carry full load at -50°C.

Product Display

SG(B)10 Dry Type Transformer left view
SG(B)10 Series Dry Type Transformer side view

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) L × W × H (Without Enclosure) L × W × H (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 13580 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
* Notes: The overall dimensions and weight data in the table are for reference only; no prior notice will be given for any changes.

Applicable Standards

GB6450-1986 Dry-Type Power Transformers
GB/T10228-1997 Technical Parameters and Requirements for Dry-Type Power Transformers
GB/T17211-1998 Loading Guide for Dry-Type Power Transformers
GB1094.3-2003 Power Transformers - Part 3: Insulation Levels, Dielectric Tests and Air Clearances for External Insulation
JB/T10088-2004 Sound Levels for 6~500kV Power Transformers
JB/T56009-1998 Product Quality Grading for Dry-Type Power Transformers

Frequently Asked Questions

What type of insulation is used in the SG(B)10 transformer?

The transformer utilizes Class H (180°C) insulation, with DuPont NOMEX® paper (Class C) serving as the main insulation material, offering outstanding thermal stability and flame retardancy.

How does the transformer perform under short-circuit and sudden overload conditions?

Thanks to continuous high-voltage winding, low-voltage foil winding, vacuum impregnation, and high-strength ceramic insulators, it delivers superior short-circuit resistance. It can run continuously at 120% load and withstand 140% load for up to 3 hours without forced air cooling.

Is the SG(B)10 dry-type transformer suitable for extreme low-temperature environments?

Yes, the non-aging and elastic properties of the high-grade insulation materials enable the transformer to immediately support full load operations even at temperatures as low as -50°C.

What are the fire safety and environmental characteristics of this transformer?

The SG(B)10 series is completely flame-retardant, self-extinguishing, and non-toxic. Even when subjected to open flame burning under extreme temperatures, almost no smoke or toxic fumes are generated.

What rated capacity options are available in the SG(B)10 non-encapsulated series?

The standard series covers capacities ranging from 100 kVA up to 2500 kVA, accommodating standard primary voltages such as 6kV, 6.3kV, 6.6kV, 10kV, 10.5kV, and 11kV down to 0.4kV.

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