Dry Type SCB18 400kVA 11kv Three Phase Power Distribution Transformer Shopping Mall

Product Description
Key technical innovation points:
Low-Loss Core Design:High-grade grain-oriented silicon steel with step-lap mitred joints reduces no-load loss by 15-20% vs conventional models
Epoxy Resin Cast Coil:Vacuum pressure impregnation (VPI) casting eliminates partial discharge, ensures moisture resistance and extends insulation life
Fire-Safe Construction:No oil, no explosion risk. Epoxy resin is self-extinguishing, meeting strict fire codes for indoor and crowded areas
Partial Discharge Control:PD level below 10pC at rated voltage, verified by factory partial discharge test on every unit

The cast resin dry-type transformer is a three-phase distribution transformer whose windings are encapsulated in epoxy resin under vacuum pressure. Unlike oil-immersed transformers, it contains no insulating liquid, making it inherently fire-safe and environmentally clean.
Designed for indoor installation, the transformer uses air as the cooling medium (natural AN or forced AF with fans). It is widely deployed in commercial buildings, data centers, hospitals, metro systems, industrial plants and other locations where fire safety, low noise and zero maintenance are critical requirements.
Structural Features
Core:High-grade grain-oriented silicon steel sheet, step-lap mitred cutting, low no-load loss and low noise
HV Winding:Epoxy resin cast, copper foil or wire, vacuum pressure impregnation, excellent insulation and PD control
LV Winding:Copper foil winding with inter-layer insulation, strong short-circuit withstand capability
Clamping Structure:Steel tie rods and pressure plates ensure solid coil clamping, preventing looseness under short-circuit
Enclosure:Optional IP20 / IP23 sheet steel or aluminum enclosure with ventilation grilles and protection grille
Temperature Control :Built-in PTC / PT100 sensors and temperature controller with fan start, alarm and trip functions
Product Structure Introduction
Epoxy Resin Cast Coil: Vacuum cast epoxy resin encapsulates copper winding, high mechanical strength, anti-short circuit capability.
Silicon Steel Laminated Core: Low loss cold rolled silicon steel sheet, optimized core structure to reduce noise & no-load loss.
Temperature Controller: Real-time winding temperature monitoring, alarm and trip protection.
Mounting Base & Bracket: Heavy-duty steel base for stable installation.
Enclosure (Optional IP20/IP30): Prevent accidental touch and dust ingress.
Data Center & Critical Loads
Urban & Commercial Distribution
Solar & Wind Step-Up Stations
Heavy Industry & Mining
Mining & Remote Sites
Utility & EPC Projects

Product parameters

SCB12-800/10 Dry-Type Transformer

No.	Parameter	Specification
1	Energy Efficiency Class	SCB12
2	Rated Capacity	800 kVA
3	Rated Voltage (HV/LV)	10 kV / 0.4 kV
4	Rated Current (HV/LV)	46.19 A / 1154.7 A
5	Voltage Ratio	10 ± 2 × 2.5% / 0.4 kV
6	Short-Circuit Impedance	6%
7	Vector Group	Dyn11
8	Rated Frequency	50 Hz
9	Insulation Class	Class F
10	Temperature Rise Limit	100 K
11	Rated Insulation Level	35/5 kV
12	Lightning Impulse Withstand Voltage (HV Side)	75 kV
13	Power Frequency Withstand Voltage (HV Side)	35 kV / 60 s
14	Power Frequency Withstand Voltage (LV Side)	5 kV / 60 s
15	Power Frequency Withstand Voltage (Neutral Point)	5 kV / 60 s
16	No-Load Loss	1.215 kW
17	Load Loss	6.96 kW
18	No-Load Current	0.70%
19	Efficiency	≥99%
20	Partial Discharge Level	<10 pC
21	Noise Level	≤60 dB

Our advantages

Guaranteed Loss Values

No-load and load loss figures are contractually guaranteed and verified by routine test reports – no hidden energy cost.

100% Copper Winding

We use pure copper conductors, not aluminum. Higher conductivity, lower load loss, longer service life.

Every Unit Tested

Routine tests (ratio, resistance, insulation, PD, no-load/load loss) on every transformer before shipment.

Custom Engineering

We design to your specification – special voltages, impedance, vector groups, noise limits and accessories.

Fast Lead Time

Standard models ship in 25-35 days. Batch orders with phased FAT and delivery to match your project schedule.

Complete Documentation

Datasheet, GA drawing, wiring diagram, test reports, O&M manual, material certificates – all ready for site acceptance.

Manufacturer Advantages

Full in-house production from core processing to final testing, key processes non-outsourcing.
Independent test lab, support routine test, type test and FAT for project acceptance.
Powerful custom engineering, comply with IEC and various local utility specifications.
Traceable high-grade raw materials with material certificates provided.
Reliable lead-time, support batch & phased delivery for EPC projects.
Complete technical documentation package for overseas tender & site acceptance.
Export-standard moisture-proof & shock-proof packing for long-distance ocean shipping.
Global remote technical support and clear warranty policy.
About us
JIANGSU SHENDIAN ELECTRIC CO., LTD. WAS ESTABLISHED IN AUGUST 2007. HEADQUARTERED IN JIANGSU PROVINCE, CHINA, THE COMPANY OCCUPIES A SITE AREA OF 25,000 SQUARE METERS, HOUSING 30,000 SQUARE METERS OF PRODUCTION FLOOR SPACE ACROSS ITS MULTI-LEVEL MANUFACTURING WORKSHOPS, AND EMPLOYS MORE THAN 150 PROFESSIONALS.
AS AN INTEGRATED POWER DISTRIBUTION EQUIPMENT MANUFACTURER, SHENDIAN ELECTRIC SPECIALIZES IN THE R&D, ENGINEERING DESIGN, MANUFACTURING, SALES, INSTALLATION, AND OPERATION & MAINTENANCE OF ADVANCED ELECTRICAL SOLUTIONS. THE COMPANY IS COMMITTED TO DEVELOPING INTELLIGENT POWER DISTRIBUTION SYSTEMS AND PROVIDING RELIABLE, ENERGY-EFFICIENT PRODUCTS FOR CUSTOMERS WORLDWIDE.
THE COMPANY’S CORE PRODUCT PORTFOLIO INCLUDES:
• ENERGY-SAVING EPOXY CAST RESIN DRY-TYPE TRANSFORMERS UP TO 35 KV
• ENERGY-EFFICIENT OIL-IMMERSED DISTRIBUTION TRANSFORMERS
• PHOTOVOLTAIC STEP-UP TRANSFORMERS FOR RENEWABLE ENERGY PROJECTS
• PREFABRICATED SUBSTATIONS
• HV, MV, AND LV SWITCHGEARS, INCLUDING AUTHORIZED SWITCHGEAR PANELS
AT JIANGSU SHENDIAN ELECTRIC, TECHNOLOGICAL INNOVATION IS DRIVEN BY A CONTINUOUS COMMITMENT TO QUALITY, RELIABILITY, AND CUSTOMER VALUE. THE COMPANY BRINGS TOGETHER A TEAM OF EXPERIENCED PROFESSIONALS WHO ARE PASSIONATE ABOUT THE POWER INDUSTRY AND DEDICATED TO SUPPORTING THE GLOBAL TRANSITION TOWARD SAFER, SMARTER, AND MORE SUSTAINABLE ENERGY SYSTEMS.
BY COMBINING EXTENSIVE INDUSTRY EXPERIENCE, ADVANCED MANUFACTURING TECHNOLOGIES, PROFESSIONAL EXPERTISE, AND INDEPENDENTLY DEVELOPED PRODUCTION EQUIPMENT, SHENDIAN ELECTRIC CONTINUOUSLY IMPROVES ITS PRODUCT CAPABILITIES AND MANUFACTURING STANDARDS. THROUGH COOPERATION WITH DOMESTIC AND INTERNATIONAL POWER INDUSTRY PARTNERS AND THE INTRODUCTION OF LEADING TECHNICAL TALENT, THE COMPANY DELIVERS STANDARDIZED, RELIABLE, LOW-CARBON ELECTRICAL PRODUCTS DESIGNED TO MEET THE EVOLVING NEEDS OF MODERN POWER SYSTEMS.
WITH A STRONG FOCUS ON QUALITY, INNOVATION, AND SUSTAINABILITY, JIANGSU SHENDIAN ELECTRIC AIMS TO BECOME A TRUSTED GLOBAL PARTNER IN INTELLIGENT POWER DISTRIBUTION AND CLEAN ENERGY SOLUTIONS.
Shipping Methods:
• Sea (FCL/LCL) via major Chinese ports: 15-45 days.
• Rail: China-Europe Railway Express: 15-20 days.
• Road: Regional deliveries.
• Air: For urgent small shipments.
Trade Terms:
EXW, FOB, CIF
Lead Time:
• 30-630 kVA: 20-30 days.
• 800-2,500 kVA: 35-45 days.

Q：What is a dry-type transformer? A：Dry-type transformer is cooled by air instead of oil. It uses epoxy resin casting or vacuum impregnation insulation, no flammable oil, safe and environmentally friendly.

Q：What are its main advantages compared with oil-immersed transformer? A：Fireproof, explosion-proof, low pollution, simple maintenance, small footprint, suitable for indoor, dense urban and high safety requirement places.

Q：What voltage levels can you supply for dry-type transformers? A：Mainly 10kV, 20kV, 35kV high voltage side, low voltage 0.4kV. Custom voltage ratios are available upon request.

Q：What is the insulation class of your dry-type transformer? A：Standard insulation class F and H. Class H can withstand higher temperature, suitable for high ambient temperature working conditions.

Q：Can dry-type transformers be installed indoors? A：Yes, it is the preferred type for indoor installation, such as data center, commercial building, subway and hospital. It can also be outdoor with proper protective enclosure.

Q：What is the standard efficiency level of your dry-type transformer? A：We offer high-efficiency models including SCB13, SCB14, SCB18, meeting international energy efficiency standards, low no-load loss.

Q：Does dry-type transformer need regular oil replacement? A：No. There is no insulating oil inside. Daily inspection focuses on dust cleaning, temperature check and fastener tightening.

Q：What protection devices are equipped? A：Built-in temperature sensor and fan. It supports over-temperature alarm, trip and automatic cooling fan control.

Q：Can you customize capacity, tapping and accessories? A：Yes. Capacity from 30kVA to 25000kVA, on-load or off-load tap changer, IP20/IP30 enclosure, wheels, surge arresters are optional.

Q：What is the typical lead time? A：Standard models: 15–25 working days. Customized special specifications will take 30–45 working days.

1. Transformers Package
Packed in solid plywood wooden cases. The crates are reinforced with timber frames, equipped with bottom skids for forklift handling. Internal moisture-proof and shockproof protection is applied to safeguard electrical parts during sea & land transit.
2. Large Prefabricated substation / Complete Substation package
No wooden box packing. The whole unit is fixed and secured on flatbed trucks with tension straps. We adopt professional heavy-load binding scheme, and take protective measures on exposed fittings. Direct shipment as an integrated module to cut re-assembly work for clients.
All packages comply with export shipping standards, suitable for ocean freight, land transportation and multi-modal transport.