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Help CenterSingle-phase 35KV Epoxy Cast Insulation Voltage Transformer for Power Distribution
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As a specialized manufacturer with over a decade of experience in electrical equipment, Jinhua Dika Electrical Equipment Co., Ltd. proudly presents our Single-phase 35KV Epoxy Cast Insulation Voltage Transformer. Engineered for reliability and precision in medium-voltage power distribution networks, this transformer is a cornerstone component for safe and efficient energy measurement and protection. Our commitment to the ISO9001 quality management system ensures every unit meets stringent performance criteria, providing utilities, industrial plants, and commercial facilities with a trustworthy solution for voltage monitoring and control.
This voltage transformer is designed to transform high primary system voltage (35KV) to standardized, low secondary voltages suitable for meters, relays, and other instrumentation. Its primary construction feature is the use of high-grade epoxy resin for cast insulation, which provides exceptional dielectric strength, mechanical robustness, and resistance to environmental factors.
Core Product Features & Technical Advantages:
- Superior Epoxy Cast Insulation: The entire active part is vacuum-encapsulated in flame-retardant, tracking-resistant epoxy resin. This process eliminates internal air pockets, creating a solid, monolithic insulation barrier that is impervious to moisture, dust, and corrosive atmospheres. It significantly enhances service life and reduces maintenance needs compared to oil-immersed or air-insulated designs.
- High Accuracy and Stability: Precision-engineered magnetic cores and windings ensure minimal ratio and phase angle errors across a wide range of operating conditions. This stability is crucial for accurate energy metering, billing, and the reliable operation of protective relays.
- Compact and Lightweight Design: The epoxy casting allows for a much more compact form factor than traditional designs. This saves valuable space in switchgear cabinets, substations, and compact secondary distribution units, simplifying installation and logistics.
- Excellent Safety Performance: The solid insulation system is non-flammable and eliminates the risk of oil leakage, making it a safer choice for indoor installations and environmentally sensitive areas. It also features a reliable grounding system for operator safety.
- Wide Operating Range: Designed to perform consistently under varying load conditions and within specified ambient temperature ranges, ensuring dependable operation in diverse climatic zones from the tropics to colder regions.
Detailed Technical Specifications:
The following table outlines key parameters for standard models. Custom specifications for ratio, accuracy class, and terminal arrangements are available upon request.
| Parameter | Specification / Value |
| Rated Primary Voltage (Upr) | 35 kV |
| Rated Secondary Voltage (Usr) | 100V, 110V, or as required |
| Rated Frequency | 50Hz or 60Hz |
| Standard Accuracy Class | 0.2, 0.5, 1.0 |
| Rated Thermal Short-Time Current | Typically 8-10 kA for 1 second |
| Insulation Level | 35KV Power Frequency Withstand Voltage / 95KV Lightning Impulse Withstand Voltage |
| Ambient Temperature Range | -25°C to +40°C (Extended range optional) |
| Protection Class (Enclosure) | IP00 to IP54 (Depending on housing) |
| Mounting | Flange or bracket mounting |
Benefits for Your Power Distribution System:
- Enhanced Grid Reliability: Accurate voltage sensing is fundamental for system monitoring, enabling quick detection of anomalies and preventing widespread outages.
- Cost-Effective Operation: The maintenance-free nature of epoxy cast units reduces lifetime operational costs. Their long service life offers an excellent return on investment.
- Regulatory Compliance: Provides precise signals for metering, helping utilities and large consumers comply with energy measurement standards and regulations.
- System Protection: Delivers reliable input to protective relays, facilitating the rapid isolation of faulted sections to minimize equipment damage and downtime.
- Design Flexibility: Available in various accuracy classes and secondary voltage outputs, allowing seamless integration into both new projects and retrofit applications.
Trust and Global Reach:
Jinhua Dika's dedication to quality is validated by our ISO9001 certification, governing every step from material sourcing to final testing. Our products have gained the trust of clients worldwide, with an annual export value ranging between US$1 Million and US$1.5 Million. We efficiently serve major markets across North and South America, Europe, Asia, Africa, and Oceania through key ports like Shanghai, Tianjin, Guangzhou, and Ningbo. This global footprint and proven export capability mean we understand the specific requirements of international power projects and can deliver reliable products with consistent support. Choosing our 35KV Epoxy Cast Voltage Transformer means partnering with a manufacturer committed to durability, accuracy, and safety—key pillars for any modern power distribution network. Contact us today to discuss your project specifications or request a detailed quotation.
Frequently Asked Questions (FAQ):
-
Q: What are the primary applications for this 35KV voltage transformer?
A: It is predominantly used in 35KV switchgear, ring main units, compact substations, and incoming lines of industrial plants for purposes including revenue metering, system monitoring, synchronizing, and providing a voltage signal to protective relays and control systems. -
Q: How does epoxy cast insulation compare to oil insulation?
A: Epoxy cast insulation is solid, eliminating risks of leakage, fire hazards, and environmental contamination associated with mineral oil. It is also maintenance-free, more compact, and offers better resistance to moisture and pollution, though its heat dissipation is generally lower than oil. -
Q: Can this transformer be used for both indoor and outdoor installations?
A: Yes, but the suitability depends on the specific model's ingress protection (IP) rating. Standard models are typically for indoor use (IP00-IP2X). For outdoor installation, models with higher IP ratings (e.g., IP54) and appropriate housing designs to withstand sunlight and rain are available upon request. -
Q: What accuracy classes do you offer, and how do I choose?
A: We commonly produce units in 0.2, 0.5, and 1.0 accuracy classes. Class 0.2 is for precision metering and billing. Class 0.5 is widely used for general commercial metering and monitoring. Class 1.0 is suitable for general indication and some protection functions. The choice depends on your application's accuracy requirements. -
Q: Do you provide custom voltage ratios and secondary outputs?
A: Absolutely. While standard secondary outputs are 100V or 110V, we can customize the transformation ratio and secondary voltage (e.g., 120V, 66V) to match your specific panel instruments or system standards. Please provide your detailed requirements during inquiry. -
Q: What is the typical delivery lead time for standard models?
A: For standard specifications, the lead time is generally 4-6 weeks after order confirmation. For customized products, the lead time may vary based on the complexity of requirements and current production schedule. We always strive to provide a reliable delivery schedule. -
Q: What testing is performed before shipment?
A: Each unit undergoes a comprehensive routine test protocol, which includes but is not limited to: turns ratio test, polarity verification, winding resistance measurement, power frequency withstand voltage test, and partial discharge measurement (if applicable), ensuring it meets all declared specifications. -
Q: What are the main advantages of sourcing from your company?
A: As a direct manufacturer with ISO9001 certification, we offer competitive pricing, flexible customization, strict quality control, and direct technical support. Our experience in exporting to diverse global markets means we are adept at handling international logistics and understanding regional standards.
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