11kV Dry Type Distribution Transformer

Name: China 11kV Dry Type Distribution Transformer Manufacturers Suppliers Factory - Tianrun Electric
Brand: Tianrun
SKU: 316728734

Product: SCB10 Series 10kv Distribution Transformer
Rated Power: Up to 6300kVA (Customized)
Primary Voltage: 6kV, 6.3kV, 6.6kV, 10kV, 10.5kV, 11kV, 20kV, 22kV (Customized)
Secondary Voltage: 0.4kV, 0.8kV, etc. (Customized)
Tap Range: ±2×2.5%, ±5% (Customized)
Vector Group: Dyn11, Yyn0 (Customized)
Frequency: 50Hz, 60Hz (Customized)
Phase: 3 phase

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Product Introduction

Zhejiang Tianrun Electric Co., Ltd. is one of the leading manufacturers and suppliers of 11kv dry type distribution transformer in China. We are committed to providing high quality customized products with competitive price. We warmly welcome you to buy bulk advanced 11kv dry type distribution transformer from our factory. Also, quotation is available.

Product Overview

The SCB10 is a proven general-purpose dry-type transformer built on mature and widely-validated resin-casting technology, fully compliant with IEC international standards. It adopts vacuum epoxy resin casting and LV foil winding technology, with a stepped-lap core structure that delivers stable magnetic-circuit performance and reliable temperature rise control. As a classic baseline model, it retains all inherent dry-type advantages including flame retardancy, maintenance-free operation, low noise and strong grid adaptability. Equipped with standard temperature control and optional cooling & protection devices, it fits global 50/60Hz indoor power distribution scenarios. With well-established manufacturing processes, stable supply chain and excellent economy, it serves as a cost-effective workhorse for ordinary overseas commercial and industrial projects where proven reliability and budget control are the priority.

Core Exclusive Advantages

Mature and Proven Technology

The SCB10 is built on long-term validated resin-casting and winding processes, with accumulated field operation data across numerous projects worldwide. Its design has been fully stabilized, delivering consistent and predictable performance that customers and contractors can rely on without qualification risks.

High Reliability and Strong Grid Adaptability

The robust winding and core structure provides dependable load capacity and dynamic adaptability to fluctuating grid conditions. It effectively handles local thermal stress under variable load cycles, ensuring safe and stable operation in common commercial and industrial environments.

Low Noise and Environmental Friendliness

Effective vibration damping and noise suppression structures keep operating vibration and acoustic levels within comfortable ranges. With good acoustic environmental performance, the transformer is suitable for indoor substations, commercial buildings and populated service areas.

Outstanding Economy and Cost Performance

Benefiting from mature manufacturing and a stable supply chain, the SCB10 offers competitive acquisition cost while meeting all standard performance requirements. It is the ideal choice for large-volume projects, budget-sensitive tenders and routine replacement programs where reliable performance per dollar matters most.

Meaning of product model

product-842-330

Note: More technical parameters of the transformer can not be reflected in the model, more information is required to check the technical parameters.

Product Parameter

SCB 10 Series 10kV Transformer Technical Parameters

Rated capacity (kVA)	Voltage combinations			Vector group	No-load loss	Load loss	Short circuit impedance	No-load current
Rated capacity (kVA)	High voltage (kV)	High-voltage tap range (%)	Low voltage (kV)	Vector group	W	W	%	%
30	6 6.3 6.6 10 10.5 11	±5%, ±2x2.5%	0.4	Dyn11 Yyn0	190	710	4.0	2.0
50					270	1000		2.0
80					370	1380		1.5
100					400	1570		1.5
125					470	1850		1.3
160					540	2130		1.3
200					620	2530		1.1
250					720	2760		1.1
315					880	3470		1.0
400					980	3990		1.0
500					1160	4880		1.0
630					1300	5960	6.0	0.85
800					1520	6960		0.85
1000					1770	8130		0.85
1250					2090	9690		0.85
1600					2450	11700		0.85
2000					3050	14400		0.70
2500					3600	17100		0.70

Notes: The technical parameters of our transformers are for reference only. Customized solutions are available, with specifications adjustable according to project‑specific requirements.

Differences among SCB10, SCB11, SCB12, SCB13, SCB14, SCB18

Dimension	SCB10	SCB11	SCB12	SCB13	SCB14	SCB18
Core material	Standard grain-oriented silicon steel	Higher-grade silicon steel	High-permeability thin-gauge silicon steel	Optimized magnetic circuit, some use amorphous alloy	Premium high-permeability silicon steel	Ultra-thin high-permeability silicon steel, 3D wound core
No-load loss	Highest	High	Medium	Low	Lower	Lowest
Load loss	Highest	High	Medium	Low	Low	Lowest
Noise level	Loudest	Louder	Quiet	Quieter	Quieter	Quietest
No-load current	Highest	High	Medium	Low	Lower	Lowest
Partial discharge	Highest	High	Medium	Low	Low	Lowest
Purchase cost	Lowest	Lower	Medium	Higher	High	Highest
Size & weight	Most compact	Compact	Slightly larger	Larger	Larger	Largest
Typical use	Temporary replacement of old equipment	General industry, backup	Budget-sensitive new projects	Legacy retrofit, noise-sensitive	Commercial buildings, schools, hospitals, industrial, municipal	Data centers, financial hubs, commercial complexes, renewable energy, critical loads

Summary: SCB10 to SCB18 form an efficiency ladder - higher numbers mean better core materials, lower losses, quieter operation, and higher upfront cost, but lower long-term operating cost.

Operating Environmental Conditions

Name		Unit	Project needs value
Ambient temperature	Maximum daily temperature	℃	40
	Minimum daily temperature	℃	-25
	Maximum diurnal temperature range	K	25
	Average temperature in hottest month	℃	30 (or provided by the project unit)
	Maximum annual average temperature	℃	20 (or provided by the project unit)
Humidity	Average daily relative humidity	%	≤95
Humidity	Average monthly relative humidity	%	≤90
Height		m	≤1000
The average maximum wind speed at 10m above the ground for 10 minutes		m/s	35
Seismic fortification capability	Ground level acceleration	m/s²	3
Seismic fortification capability	Safety factor for three cycles of resonance		≥1.67
Installation site (indoor/outdoor)			Confirm with project unit before supply
Atmospheric corrosivity levels (C1/C2/C3/C4/C5/CX)			Confirm with project unit before supply
Protective rating of belt shell			IP31, IP30, IP21, IP20 (or provided by the project unit)

Product Application

Scenarios: commercial buildings, manufacturing plants, hotels, indoor substations.
Working conditions: day-heavy / night-light loads, frequent start-stop, peak-valley cycles.
Markets: Middle East, Latin America, Southeast Asia, Africa.
Best for: budget-sensitive tenders, turn-key projects, routine replacement.

Proccess of Transformer

1-Wire‑wound winding of transfomer

2-Foil‑wound winding of transfomer

3-Vacuum casting of transformer

4-Epoxy resin casting of transfomer

5-Coil assembling over core

6-HV porcelain bushings of oil immersed transformer

7-Lead insulation taping and welding of transfomer

8-Vacuum oil filling of transformer

9-Tank sealing of transformer

Testing of Transformer

1-Measurement of winding resistance testing of transformer

2-Measurement of voltage ratio and check of phase displacement testing of transformer

3-Separate‑source AC withstand voltage testing of transformer

4-Measurement of no‑load loss and no‑load current of transformer

5-Measurement of short‑circuit impedance and load loss of transformer

6-No load loss and no load current testing of transformer

7-Temperature‑rise test of transformer

8-Partial‑discharge measurement of transformer

9-Winding ressitant and voltage ratio testing of transformer

FAQ

Q1: How is the off-circuit tap changer operated?

A: The tap changer must be operated when the transformer is completely power cut. Rotate the handle on the HV side to select the desired tap position, then verify continuity before re-energizing.

Q2: What cooling methods are available?

A: Standard AN (air natural). Optional AF (air forced) with cooling fans increases capacity by up to 40–50%.

Q3: What insulation class is standard?

A: Class F (155°C) is standard; Class H (180°C) is available for higher ambient temperature or overload requirements.

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Dry Distribution Transformer