11kv Flame Retardant Epoxy Resin Transformer

• Customization: Available
• Application: Power
• Phase: Three
• Model NO.: SC(B) series
• Core: Core-type Transformer
• Cooling Method: Dry-type Transformer
• Winding Type: Two-winding Transformer
• Certification: ISO9001-2000, ISO9001
• Usage: Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: All Shapes
• Brand: Chbeb
• Certification Authority: CE(Udem), GOST-R
• Test Report: ≤25000kVA(25mva)
• Vpi: Vacuum Pressure Impregnated
• Casting: Epoxy
• Quality Guarantee: 30 Years of Maintenance-Free
• Guaranteed to Be Brand New: New Silicon Steel Sheet
• Nx(Energy Efficiency): Level 1 /Level 2 Energy Efficiency,(Nx1/Nx2)
• Transport Package: Composite Board
• Specification: 210*130*195
• Trademark: CHBEB
• Origin: China
• HS Code: 85043490
• Production Capacity: 50000pieces/Year
• Package Size: 230.00cm * 150.00cm * 200.00cm
• Package Gross Weight: 4500.000kg

Product Description

Product Description

11kV Flame Retardant Epoxy Resin Transformer

Key Features:

1.High-Efficiency Copper Winding

 --- 99.9% pure copper conductors, low losses (compliant with IEC 60076)

2.Fireproof Design

---Epoxy resin vacuum casting, UL94 V-0 flame retardant, oil-free & explosion-proof

3.Eco-Friendly

----PCB-free, 100% recyclable.

----Low noise: ≤55 dB(A), meeting urban environmental standards.

---Pollution-free, maintenance-free, ideal for indoor/sensitive environments

The SC(B) series dry-type transformers are at the forefront of cutting-edge technology and innovation, offering unparalleled features that ensure efficient and reliable power supply solutions.
Crafted with exceptional precision, these transformers boast high-voltage windings made from the finest quality enameled copper wire while low-voltage windings utilize superior copper foil. This meticulous construction guarantees both durability and heightened efficiency. 

The high-voltage windings are expertly wrapped in robust glass fiber mats and hermetically sealed with the utmost precision, using high-grade imported epoxy resin under vacuum conditions. This process ensures remarkable structural integrity.
This meticulous process results in a powerful and cohesive structure, endowing the transformers with extraordinary mechanical strength, effectively eliminating partial discharge, and significantly boosting overall reliability.

Classification of Dry-Type Transformers

 By Insulation Type

Epoxy Resin Cast

Vacuum Pressure Impregnated (VPI) with NOMEX

--Features: Hermetically sealed, IP54 protection, resistant to humidity/chemicals (e.g., marine, chemical plants).

Models: SCB10 (10kV), SCB13 (energy-efficient).

--Features: Lightweight, superior thermal cycling performance for renewable energy (wind/solar inverters).

Models: SG10 (open-type), SGB11 (encapsulated).

By Cooling Method

1.Air Natural (AN)

--Applications: Light loads (≤65% rating), well-ventilated indoor sites (e.g., commercial buildings).
--Advantages: Zero auxiliary power, 30-year lifespan.

2.Air Forced (AF)

--Applications: Short-time overload (120% capacity), high ambient temperatures (e.g., steel mills).
--Control: Auto-activated fans via WTK-12 temperature controller.

 By Voltage Class

Category	Standard Models	Applications
Medium Voltage (10-35kV)	SCB12, SCB14	Industrial plants, solar farms
High Voltage (66-110kV)	SCZ(B)9	Rail traction, offshore platforms
EHV (220kV custom)	Prototype units	HV testing labs

Classified by capacity

Capacity Range	Standard Models	Key Specifications	Efficiency & Losses	Cooling Options	Typical Applications	Special Features
Small Capacity (≤630kVA)	SCB9, SCB10, SCB12	- Voltage: 11kV/400V - Insulation: Class F (155°C) - Protection: IP20-IP55	- Efficiency: 98.2% (IE3) - No-load loss: 0.5kW (500kVA) - Load loss: 4.2kW (500kVA)	AN (Natural Air)	- Commercial buildings - Solar farms (30-500kVA) - Backup power systems	- Compact design - Low noise (<55dB)
Medium Capacity (800-2500kVA)	SCB11, SCB13, SCB14	- Voltage: 11kV/400V or 6.6kV - Insulation: Class H (180°C) - Protection: IP55	- Efficiency: 98.5% (IE4) - No-load loss: 1.1kW (1000kVA) - Load loss: 7.5kW (1000kVA)	AN/AF (Forced Air)	- Industrial plants - Data centers - Hospital power systems	- 120% overload capacity - Optional IoT sensors
Large Capacity (>2500kVA)	SCB15, SCB18, SCZ10	- Voltage: 11kV-33kV - Insulation: Class H (180°C) - Protection: IP55	- Efficiency: 99.0% - No-load loss: 2.4kW (2500kVA) - Load loss: 15kW (2500kVA)	AF (Forced Air) with dual fans	- Steel mills - Wind farms - Metro power systems	- Harmonic monitoring - Remote control ready

Specification

Electrical Performance

Safety Performance

Environmental Adaptability

--Rated Voltage: 220V AC ±10%

--Rated Current: 5A

--Power Factor: ≥0.95

--Insulation Resistance: ≥100MΩ

Protection Rating: IP65 (Dustproof & Waterproof)

Overload Protection: Auto Power-off

Short-Circuit Protection: Response Time <0.1s

Certifications: CE, UL Certified

Operating Temperature: -20℃ ~ +60℃

Storage Temperature: -30℃ ~ +70℃

Humidity Range: 10% ~ 90% RH (Non-Condensing)
Vibration Resistance: Complies with IEC 60068-2-6

Product Parameters

 Dry-Type VS Oil-Immersed Transformers Technical Comparison

Parameter	Dry-Type Transformer	Oil-Immersed Transformer
Insulation & Cooling	• Epoxy resin (Class F/H) • Air-cooled (AN/AF) Details	• Mineral oil/synthetic ester • ONAN/ONAF cooling Details
Safety Features	• Fireproof (IEC 60076-11) • No oil leakage risk Certificates	• Pressure relief valve • Gas protection relay • Biodegradable oil option
Electrical Performance	• Efficiency: 98-99% • Higher load losses • Better harmonic resistance	• Efficiency: 99-99.5% • Lower load losses • Superior overload capacity
Economic Factors	• Higher initial cost • Lower lifetime cost (maintenance-free) TCO Calculator	• Lower initial cost • Moderate lifetime cost (oil changes required)
Environmental Adaptability	• Temp range: -25°C to +40°C • Indoor use only • 90% RH max Test Video	• Temp range: -30°C to +50°C • Outdoor installation • Altitude ≤1000m
Typical Applications	• Data centers • High-rise buildings • Hospitals	• Substations • Industrial plants • Renewable energy projects

Company Profile

CHBEB

     CHINA BEI ER BIAN (CHBEB) GROUP proudly stands with a robust registered capital of 218 million, marking its prestigious origins from the renowned Beijing Beierbian Transformer Group Co., Ltd

.

    Strategically headquartered in the vibrant city of Beijing, our focus lies in innovative technology research and groundbreaking development.

     Meanwhile, our expansive trio of production industrial parks, located in Nanjing, Jiangsu Province, and Yueqing, Zhejiang Province, are dedicated to crafting a range of superior-quality products.

About us 

     Our diverse product portfolio encompasses power transformers, state-of-the-art box-type substations, innovative wind and solar energy box-type substations, sophisticated high and low voltage switchgear assemblies for seamless power transmission and distribution, cutting-edge ring main units, advanced outdoor high-voltage vacuum circuit breakers, comprehensive power transmission and transformation support, and much more.

    Our unparalleled quality products and tailored solutions are trusted across a spectrum of industries, including the national grid, electric power, metallurgy, steel, petrochemical, machinery manufacturing, and pharmaceutical sectors.

 Exhibitions

    As a professional transformer manufacturer, we actively participate in leading global power industry exhibitions to showcase our technical capabilities and product advantages.

   At these events, we highlight our latest energy-efficient transformer series, including dry-type and oil-immersed transformers, attracting utilities, EPC contractors, and industry partners from around the world.

    On-site, we provide expert technical presentations and product demonstrations, allowing clients to directly observe core manufacturing processes and performance features.

     Our engineering team is available to answer technical inquiries and offer customized solutions tailored to specific requirements. These exhibitions also serve as a valuable opportunity to stay updated on international standards and emerging market trends.

Packaging & Shipping

    In our packing workshop, each transformer undergoes triple protection: windings are vacuum-sealed with moisture-proof film, then secured in custom steel-wood crates (≥8cm thickness with shock-absorbing EPS foam), and bushings are protected with PE corner guards. GPS-tracked transportation uses temperature-controlled trucks (±3℃), complying with IEC 60076-14 vibration standards.

  For sea freight, humidity loggers are placed inside containers, with post-delivery unpacking inspection reports provided.

Certifications

The quality of our products has been officially certified by the authorities.

We have obtained ISO9001 quality management system certification, 

CCC certification, etc.

About Advantages

   

  At CHBEB, we are passionately committed to delivering electric power solutions that are not only secure and clean but also efficient and convenient, strictly adhering to the pinnacle of industry standards.

   We, at CHBEB, fully comprehend that superior production equipment is paramount in our pursuit of unparalleled excellence.

   This understanding drives us to make substantial investments in the most advanced production and processing equipment, sourced from the world-renowned manufacturers in Germany and the United States.

    Our state-of-the-art assembly line plays a pivotal role in ensuring that our products consistently embody the highest standards of reliability and quality, reflecting our steadfast dedication to excellence.