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Pole Mounted Distribution Transformer 250kVA 7.2kV 60Hz Single Phase 120/240V
Product Spotlights
Durable 250kVA single-phase transformer for 7.2kV to 120/240V conversion. Features robust, weather-resistant construction for pole mounting, high-efficiency core design to minimize losses, and flexible winding options (copper/aluminum). Ensures reliable power for residential and light commercial overhead distribution networks with low maintenance needs.
US$ 5647
≥1 Unit
Key Specifications
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Rated Capacity:
250 kVA
Primary Voltage:
7.2 kV
Secondary Voltage:
120/240 V
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Rated Capacity
250 kVA
Primary Voltage
7.2 kV
Secondary Voltage
120/240 V
Phase
Single Phase
Frequency
60 Hz
Mounting Type
Pole Mounted
Cooling Type
Oil-Immersed, Self-Cooled (ONAN)
Insulation Class
Class A or Higher (Customizable)
Winding Material
Copper or Aluminum (Available)
As a professional manufacturer of electrical equipment, Jinhua Dika is dedicated to providing reliable power distribution solutions for utilities and industrial clients worldwide. Our 250kVA pole mounted distribution transformer is engineered for efficiency and durability in converting 7.2kV primary voltage to a usable 120/240V single-phase supply, perfectly suited for rural electrification, residential subdivisions, and light commercial applications.
This transformer represents our commitment to quality and performance, designed to withstand diverse environmental conditions while ensuring stable voltage regulation. We understand the critical need for dependable infrastructure, and our product is built to deliver just that, offering a robust solution for overhead distribution networks.
Core Product Features & Technical Advantages:
- Robust Construction for Outdoor Durability: The tank is fabricated from high-quality, corrosion-resistant steel. All external hardware, including brackets and lifting lugs, is galvanized or stainless steel to prevent rust. The hermetically sealed design prevents moisture ingress, a common cause of insulation degradation and failure.
- Optimized Magnetic Circuit Design: Utilizes high-grade, grain-oriented silicon steel laminations for the core. This design minimizes core losses (no-load losses) and reduces exciting current, leading to higher overall efficiency and lower operating costs over the transformer's lifespan.
- High-Performance Windings: Windings are meticulously wound using either electrolytic copper or electrical-grade aluminum conductors, based on customer specification. They are impregnated with high-temperature insulation varnish and carefully dried to ensure mechanical stability and excellent dielectric strength.
- Superior Insulation System: The transformer is filled with high-quality, inhibited mineral oil that provides both cooling and insulation. The oil is processed to remove moisture and gases, and the system often includes a sealed conservator or a nitrogen blanket to prevent oil oxidation and maintain insulation integrity.
- Comprehensive Safety & Protection: Standard fittings include a pressure relief device to vent internal gases safely in case of a fault, a liquid level gauge for visual oil inspection, and a thermowell for temperature monitoring. Additional protective devices like lightning arresters and fuse cutouts can be mounted on the structure.
- Flexible Configuration Options: While designed as a standard unit, numerous customizations are available. These include different tap changer arrangements (e.g., no-load tap changer with ±5% taps), alternative bushings (porcelain or polymer), specific paint colors for utility coordination, and mounting configurations to fit various pole sizes.
Technical Specifications at a Glance:
| Parameter | Specification |
| Rated Power | 250 kVA |
| Primary Voltage (High Side) | 7.2 kV |
| Secondary Voltage (Low Side) | 120/240 V (Single-Phase, 3-Wire) |
| Frequency | 60 Hz |
| Vector Group / Connection | Typically 1 Phase, 2 Winding |
| Impedance Voltage | Approximately 2-4% (Standard, customizable) |
| Noise Level | |
| Operating Temperature Rise | 65°C (Average winding rise over ambient) |
Benefits for Your Operations:
- Reduced Lifetime Cost: High efficiency translates to lower energy losses, saving on electricity costs for the utility or end-user over decades of service.
- Minimized Maintenance: The sealed, robust construction and high-quality materials lead to a low-maintenance product, reducing the need for frequent inspections and associated labor costs.
- Enhanced Grid Reliability: Stable voltage output and strong short-circuit withstand capability contribute to fewer service interruptions and improved power quality for customers.
- Easy Installation & Integration: The pole-mounted design is a proven, space-saving solution that integrates seamlessly into existing overhead distribution networks, simplifying the work for line crews.
Backed by Jinhua Dika's manufacturing expertise and a commitment to international quality standards, this 250kVA transformer is a dependable choice for power distributors. With an annual export value reflecting our global reach and a product portfolio supported by relevant management system certifications, we ensure consistent quality and reliable performance. Our presence in major markets from North America to Southeast Asia and Africa demonstrates our ability to meet diverse regional requirements. Choose a partner focused on delivering durable, efficient, and cost-effective distribution equipment. Contact us today to discuss your project specifications or to request a detailed quotation.
Frequently Asked Questions (FAQ)
-
Q: What is the typical delivery lead time for this 250kVA pole transformer?
A: For standard configurations, the lead time is generally 4-6 weeks after order confirmation. Customized specifications may require additional time, which we will confirm upon reviewing your requirements. -
Q: Can this transformer be supplied with aluminum windings instead of copper?
A: Yes, we offer both copper and aluminum winding options. Aluminum windings can provide a cost advantage, and we design them to meet the same performance and efficiency standards. The choice depends on your specific project budget and technical preferences. -
Q: What kind of warranty do you provide for this product?
A: We offer a standard warranty against manufacturing defects. The specific terms and duration are provided with the commercial contract and are based on the final agreed specifications and application conditions. -
Q: Are the bushings included, and what type are they?
A: Yes, bushings are included as standard. We typically supply porcelain bushings, which are known for their durability and tracking resistance. Polymer (composite) bushings are available as an alternative upon request. -
Q: Is this transformer compatible with existing 7.2kV distribution lines in my region?
A: The 7.2kV primary voltage is a common standard. However, we recommend confirming your local grid's specific nominal voltage, BIL (Basic Impulse Level) requirements, and preferred connection types. We can adjust design details like tap settings and bushing BIL ratings to ensure compatibility. -
Q: Do you provide installation guidelines or support?
A: We provide detailed installation, operation, and maintenance manuals with each transformer. For complex projects, technical consultation is available to support your engineering team. -
Q: What are the main differences between your product and other similar transformers on the market?
A> Our focus is on a balanced combination of material quality, precise engineering for low losses, and robust construction for long field life. We emphasize manufacturing consistency and offer flexibility in customization to match specific utility standards, which can be a distinguishing factor. -
Q: From which ports can you ship, and what are the typical shipping terms?
A> We can arrange shipments from major Chinese ports including Shanghai, Tianjin, Guangzhou, and Ningbo. We commonly work on FOB, CIF, or CFR terms, depending on the destination and customer preference.
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1Yr
Business Type
Manufacturer
Annual Export Value
US$1 Million - US$1.5 Million
Total Employees
11 - 50 People
Product Certifications
HACCP, TL900, QS9000, SA8000, ISO9001, ISO9004, ISO17799, ISO9000, ISO14000, ISO10441, ISO16949, TS16969, ISO19011:2000, OHSAS18001, Others
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