Three Phase Dry Type Transformer 1000kVA 3.3kv/0.415V Generator High Efficiency Outdoor Type

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 Dry Type Transformer 1000kVA 3.3kV/0.415V Generator High Efficiency Outdoor Type

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 Inspection → Core Cutting & Stacking → Coil Winding → Resin Casting / VPI & Curing → Coil Finishing → Core-Coil Assembly → Wiring → Accessories & Enclosure Installation → Factory Tests → Surface Treatment → Final Inspection & Packing
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

Company Profile
Jiangsu Shendian Electric – 30,000 m² plant, 200+ staff, 30 R&D engineers.

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

Certificates and Test Reports

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
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 compared with oil-immersed transformers?

A: Dry-type transformers feature fire resistance, low pollution, simple maintenance, and can be installed indoors or close to load equipment. They are suitable for high safety requirement sites such as data centers, VFD systems and buildings.

Q: Can the dry-type transformer be designed for VFD application?

A: Yes. We can manufacture VFD dedicated dry-type transformers. Please provide parameters including rated capacity, input/output voltage, phase shifting requirement and pulse number for custom design.

Q: What is your standard insulation class for resin cast dry-type transformers?

A: Our standard insulation class is F class. H class is available as optional upon request.

Q: What routine tests will be carried out before factory delivery?

A: We will complete resistance test, voltage ratio test, vector group check, no-load loss, load loss, impedance voltage, partial discharge and power frequency withstand voltage test, and provide the factory test report.

Q: What is your lead time for dry-type transformers?

A: Normally 4–8 weeks after receiving your deposit and confirmed technical specification. The exact time depends on model and accessories.

Q: Can you customize the connection group and impedance voltage as per end user’s requirement?

A: Yes. Connection group, impedance voltage, tapping range can be customized. Please send your technical datasheet for evaluation.

Q: What accessories are included in the standard scope of supply?

A: Standard supply includes temperature controller, cooling fans, clamping parts and nameplate. Enclosure, shock pads and other extra items are optional.

Q: What is the maximum operating altitude and ambient temperature for your dry-type transformer?

A: Standard design: altitude ≤1000m, ambient temperature -20℃ ~ +40℃. For higher altitude or extreme temperature, special design is needed.

Q: Do you provide on-site installation guidance or after-sales service?

A: We can supply installation manuals and remote technical support. On-site service can be arranged upon separate agreement.

Q: What is your product warranty period?

A: 24 months after shipment or 18 months after commissioning, whichever comes first, against manufacturing defects.

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.