Three Phase Cast Resin Dry Type Industrial 1250kVA 11kv/0.415kv Class F Transformer

Product Description

Brief Description
This epoxy resin cast dry-type transformer uses high-quality silicon steel core and copper windings, encapsulated with epoxy resin under vacuum casting. It has no insulating oil, featuring flame retardant, explosion-proof, low partial discharge, low noise and minimal maintenance. Ideal for indoor power distribution, high-rise buildings, hospitals, data centers, subway, photovoltaic and wind power stations. Suitable for environments with strict fire safety & environmental requirements.

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.

three Phase Cast Resin Dry Type Industrial 1000kVA 11kV/0.415kV Class F Transformer

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.

Application Scenarios

1.Commercial & residential high-rise buildings
2.Hospitals, schools, public facilities
3.Data centers
4.Metro / tunnel projects
5.Solar & wind renewable power plants
6.Industrial workshops

Product Advantages

1. Fire Safety – IEC 60076-11 Class F1
Epoxy resin self-extinguishes instantly. No oil – ideal for hospitals, subways, data centers, and high-rises.
2. Zero Maintenance & Low Operating Cost
No oil checks, pits, or separate rooms required. Lower total cost than oil-immersed units.
3. Energy Efficiency – GB 20052-2024 Grade 1
~30% lower no-load losses vs. SCB12. Operating noise: 45-52 dB(A).
4. Short-Circuit Withstand
Vacuum casting and full-oblique core joints provide up to 8% impedance withstand.
5. Partial Discharge < 5 pC
Vacuum casting eliminates voids, achieving <5 pC PD for decades of reliable insulation.
6. Compact & Environmentally Friendly
30-50% smaller footprint. No contamination risk. Installable at load centers. Fully recyclable.

Production Process
Raw material preparation → Silicon steel core lamination → Winding of high & low voltage coils →

Vacuum drying → Epoxy resin vacuum casting → Thermal curing → Core and coil assembly →

Fitting cooling fan, temperature controller and enclosure → Routine electrical tests → Final inspection and packaging.
Technical Specifications – 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

Product Range:

• Epoxy resin cast dry-type transformers (≤35 kV)

• Oil-immersed transformers

• Photovoltaic boost transformers

• YB12 box-type substations

• Intelligent high/low-voltage switchgear

• Prefabricated box transformers for EV charging

• Smart charging piles

• Distributed photovoltaic products
Global market case
EV Gigafactory, Shangha

Deployed across renewable energy plants, urban distribution networks, industrial facilities, commercial buildings, and critical infrastructure.

Oil-Immersed Transformers – Indonesia
Export Power Distribution
S13/S20 series oil-immersed distribution transformers supplied for Indonesian grid and industrial networks.
Dry-Type Transformers – Australia
Export Commercial building
SCB14/SCB18 series cast-resin dry-type transformers, 11/22 kV class, supplied to Australian commercial and data-center networks. Fire-safe, maintenance-free, engineered to AS/NZS 60076.

Total Quality Management (TQM)

ISO 9001, ISO 14001, OHSAS 45001 certified. Full-chain quality control from material to delivery.

A. Incoming Quality Control (IQC)
All raw materials undergo full testing before production. Non-conforming materials rejected.

B. In-Process Quality Control (IPQC)
10+ QC inspections: core stacking, excitation, winding resistance, insulation, partial discharge, dimensional checks.

C. Final Quality Control (FQC)
Every unit 100% tested before shipment:

Routine Tests (IEC 60076-11):
• Winding resistance
• Voltage ratio & vector group
• No-load loss & current
• Load loss & short-circuit impedance
• Insulation resistance
• Applied voltage (hi-pot)
• Induced voltage
• Partial discharge (<5 pC)
Type Tests (on request):
• Temperature rise
• Lightning impulse (95 kV)
• Short-circuit withstand
• Acoustic noise
Special Tests:
• Zero-sequence impedance
• No-load current harmonic analysis
D. Certifications
• ISO 9001
• ISO 14001
•CE
• IEC 60076

Transportation

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 are the main advantages of dry-type transformers?

A: They are fire-resistant, low noise, environmentally friendly, no oil leakage. Suitable for indoor, data center and solar projects.

Q: What is the difference between dry-type and oil-immersed transformers?

A: Dry type uses epoxy resin without oil. Oil immersed uses insulating oil for cooling. Dry type is safer for indoor installation.

Q: Can you customize voltage and capacity for dry-type transformers?

A: Yes. We support custom voltage, capacity and accessories according to your project requirements.

Q: What tests will be done before delivery?

A: We perform ratio test, load loss, no-load loss, partial discharge, withstand voltage and visual inspection.

Q: How long is your production lead time?

A: Normally 20–35 working days, depending on model and order quantity.

Q: What is the warranty period?

A: Standard warranty is 2 years after shipment. Lifetime technical support is available.

Q: Can dry-type transformers be installed outdoors?

A: It can work outdoors with IP protective enclosure. Without enclosure, it is for indoor use only.

Q: What accessories come with the transformer?

A: Normally temperature controller, cooling fans, base frame. Other optional parts can be added.

Q: What is the maximum operating temperature?

A: The winding temperature class is F (155℃) or H (180℃), we can select based on your demand.

Q: What payment terms do you accept?

A: We commonly accept T/T, L/C at sight. Other terms can be discussed.

Packaging
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.