Wholesale 110kV Series Power Transformer with On-Load Tap Changer Suppliers, Factory

1 / 2

Wholesale 110kV Series Power Transformer with On-Load Tap Changer Suppliers, Factory

Our 110kV class power transformers are developed based on advanced technologies absorbed from both domestic and international sources. Aiming to enhance product reliability, we have continuously improved R&D, processes, and structures, and implemented strict quality control. The resulting products feature low loss, low noise, low partial discharge, high mechanical and electrical strength, and fully sealed core-pull-free design, which can significantly reduce operating costs and improve the economic efficiency and safety of power grids.

Send Inquiry

Product Description

Type & Meaning

Item	Meaning / Specification
1	Three-Phase
2	Oil-Immersed Forced Air Cooling (self-cooling omitted)
3	Three-Winding (two-winding omitted)
4	On-Load Tap-Changing (off-load tap-changing omitted)
5	Performance Level Code (*)
6	Rated Capacity (kVA)
7	Voltage Class (kV)

(*) Type 9, 10, 11 or even lower loss products can be provided as required.

Product Features

Core Design Adopts fully mitered, multi-step joints and high-permeability silicon steel sheets, reducing no-load loss. Optimized cross-section design for core limbs and yokes improves clamping and reduces transformer noise.

Winding Structure Supported by formed paper cylinders; inner windings have additional support points to enhance mechanical strength. Improved transposition and combined conductors effectively reduce load loss. Computer simulation of winding thermal fields optimizes heat dissipation and oil guiding, significantly reducing the temperature difference between copper and oil.

Body & Insulation Key parts use pulp-molded components for reasonable electric field distribution. All lead connections adopt cold-pressed joints to control partial discharge. The body is dried and pressurized as a whole, with a new clamping structure and more compression points ensuring tightness and reliability. Systematic electric field calculation of leads ensures reasonable and firm layout, greatly improving short-circuit withstand capability.

Tank Construction Plate-reinforced steel tank with an elegant appearance. The control box is mounted on the transformer body, eliminating the need for a separate foundation (corrugated tanks are available upon customer request).

Accessories & Valves All valves are made of high-quality alloy steel to prevent leakage and ensure reliability. Square seamless steel pipes are used for radiator oil collection, eliminating leakage and improving the overall appearance.

Product Display

Technical Parameters

Technical Parameters of SFZ9 Type 110kV Series Two-Winding On-Load Tap-Changing Power Transformer

Rated Capacity (kVA)	Voltage Combination & Tap Range			Connection Symbol	Loss (kW)		Short-Circuit Impedance (%)	No-Load Current (%)	Weight (kg)	Overall Dimensions (mm)	Wheelbase (mm)
Rated Capacity (kVA)	High-Voltage (kV)	Tap-Changing (%)	Low-Voltage (kV)	Connection Symbol	No-Load	Load	Short-Circuit Impedance (%)	No-Load Current (%)	Weight (kg)	Length(L) × Width(W) × Height(H)	Wheelbase (mm)
10000	110 121	±8×1.25	6.6 6.3 10.5 11	YNd11	13.7	53	10.5	0.85	21500	5560 × 3500 × 4780	1475 × 1475
12500					15.7	63		0.8	25000	5650 × 3580 × 4850	1475 × 1475
16000					18.4	77		0.75	30300	5700 × 3650 × 4900	2040 × 1475
20000					21.1	94		0.7	36000	5950 × 3850 × 5000
25000					24.3	111		0.65	41500	5980 × 4100 × 5050
31500					27.9	133		0.6	50100	6100 × 4120 × 5100
40000					33.3	157		0.55	59000	6400 × 4250 × 5200
50000					39.6	194		0.5	68000	6600 × 4450 × 5400
63000					50.4	234		0.45	81000	6800 × 4650 × 5600

Note: The overall dimensions and weight data in the table are for reference only; no prior notice will be given for any changes.

Technical Parameters of SFS9 Type 110kV Series Two-Winding On-Load Tap-Changing Power Transformer

Rated Capacity (kVA)	Voltage Combination & Tap Range				Connection Symbol	Loss (kW)		Short-Circuit Impedance (%)		No-Load Current (%)	Weight (kg)	Overall Dimensions (mm)	Wheelbase (mm)
Rated Capacity (kVA)	High-Voltage (kV)	Tap-Changing (%)	Medium Voltage (kV)	Low-Voltage (kV)	Connection Symbol	No-Load	Load	Step-Up	Step-Down	No-Load Current (%)	Weight (kg)	Length(L) × Width(W) × Height(H)	Wheelbase (mm)
10000	110 121	±2×2.5	35 38.5	6.6 6.3 10.5 11	Yyn0 Dyn11	15.3	67	High-Medium: 17-18 High-Low: 10.5 Medium-Low: 6.5	High-Medium: 10.5 High-Low: 17-18 Medium-Low: 6.5	0.9	24000	5350 × 3100 × 5000	1475 × 1475
12500						17.5	78			0.85	28500	5450 × 3150 × 5200	1475 × 1475
16000						19.8	95			0.8	34000	5500 × 3200 × 5400	2040 × 1475
20000						23.4	112			0.75	38500	5600 × 3250 × 5500
25000						26.5	133			0.7	44500	5800 × 3600 × 5650
31500						30.6	157			0.65	52800	6250 × 3950 × 5800
40000						36	189			0.6	62800	6500 × 4100 × 5900
50000						43.5	225			0.55	73000	6750 × 4200 × 6050
63000						51.2	270			0.5	88000	7000 × 4450 × 6250

Note: The overall dimensions and weight data in the table are for reference only; no prior notice will be given for any changes.

Frequently Asked Questions

What does the model designation SFZ or SFS stand for?

"S" indicates Three-Phase, "F" signifies Oil-Immersed Forced Air Cooling, "S" (in SFS) indicates a Three-Winding configuration, and "Z" designates On-Load Tap-Changing capability.

Are lower-loss transformer designs available for this series?

Yes, beyond the standard performance level codes, Type 9, 10, 11, and custom lower-loss configurations can be provided to meet specific project energy efficiency specifications.

How does the winding and core structure minimize operational losses and noise?

The core utilizes high-permeability silicon steel with fully mitered joints and optimized cross-sections to suppress noise and reduce no-load losses. The windings feature transposed combined conductors, formed paper support cylinders, and computer-modeled thermal oil circulation.

What measures are taken to prevent oil leakage?

All valves are constructed of high-grade alloy steel, and square seamless steel pipes are incorporated for radiator oil collection, preventing oil seepage and enhancing structural integrity.

Can alternative oil tank configurations, such as corrugated tanks, be supplied?

Yes, while the standard unit comes with a plate-reinforced steel tank having integrated body-mounted control boxes, corrugated tanks can also be configured based on customer needs.

What ensures the short-circuit withstand capability of the unit?

Mechanical integrity is bolstered by pulp-molded insulation parts, systematic lead electric field calculations, comprehensive whole-body drying and pressuring, and high-density clamping structures across multiple compression points.

Wholesale 110kV Series Power Transformer with On-Load Tap Changer Suppliers, Factory

Product Description

Related Products

ODM S11-M Type 10kV Series Fully-Sealed Distribution Transformer Supplier, Companies

High-Quality SC(B)10 Type 10kV Series Resin Insulation Dry Type Power Transformer Manufacturers, Companies

Wholesale S13-M Type 10kV Series Hermetically Sealed Distribution Transformer Supplier, Manufacturer

High-Quality SC(B)11 10kv Resin-Insulated Dry Casting Transformer for Electric Supply Supplier, Manufacturers

Wholesale 110kV Series Power Transformer with On-Load Tap Changer Suppliers, Factory

ODM SZ11 Type 10kV Series On-Load Voltage Regulator Power Transformer Factories, Company

ODM SZ11,SFZ11 Type 35kV Series On-load Regulator Power Transformer Supplier, Manufacturer

China S11 Type 35kV/6-10kV Series Power Transformer Factories, Company

Wholesale S11 Type 35kV Series Distribution Transformer Factories, Factory

ODM ZGS11-H(Z) Combined Transformer Manufacturers, Company