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As a dedicated manufacturer with a strong focus on quality and innovation, Jinhua Dika Electrical Equipment Co., Ltd. proudly presents our advanced Gas Insulated Metering Unit designed for 33KV/11KV/110V applications in utility and grid networks. Our commitment to excellence, backed by a robust portfolio of international certifications including ISO9001 and ISO14000, ensures that every unit we produce meets the highest standards of reliability and performance for markets worldwide, from North America and Europe to Southeast Asia and Africa. This metering unit is engineered to provide accurate energy measurement, enhanced safety, and superior durability in demanding electrical distribution environments.
This Gas Insulated Metering Unit represents a significant leap in switchgear technology, offering a compact, maintenance-friendly solution for high-voltage metering. Its core value lies in providing utilities and grid operators with a reliable, space-saving, and environmentally resilient method for monitoring and billing electricity consumption at critical distribution points.
Key Product Features & Technical Advantages:
- Superior Insulation & Safety: Utilizing SF6 gas as the primary insulation medium, the unit offers exceptional dielectric strength and arc-quenching capabilities. This design significantly reduces the risk of internal faults and fire hazards compared to air-insulated systems, ensuring operator safety and system integrity.
- Compact & Space-Saving Design: The metal-enclosed, gas-insulated construction allows for a much smaller footprint than traditional air-insulated switchgear (AIS). This is ideal for urban substations or locations where space is at a premium.
- High Reliability & Low Maintenance: Sealed in a stainless steel or aluminum enclosure, the internal components are protected from environmental contaminants like dust, moisture, salt, and pollution. This results in a highly reliable system with minimal maintenance requirements over a long service life.
- Accurate Metering Bay: The unit integrates high-precision Current Transformers (CTs) and Voltage Transformers (VTs) specifically calibrated for metering accuracy class (e.g., 0.2S, 0.5S). This ensures precise measurement of energy for billing and load analysis.
- Modular & Flexible Configuration: Designed with a modular bay approach, it can be customized to include circuit breakers, disconnectors, earthing switches, and the metering compartment as per specific project requirements and single-line diagrams.
- Enhanced Environmental Resistance: Suitable for installation in harsh climates and polluted areas, the sealed construction prevents performance degradation, offering consistent operation from -25°C to +40°C ambient temperatures.
Technical Specifications Overview:
| Parameter | Specification |
| Rated Voltage (Ur) | 33 kV / 11 kV / 110 V |
| Rated Frequency | 50 Hz / 60 Hz |
| Rated Normal Current | 630 A, 1250 A, 2000 A (Customizable) |
| Insulation Medium | SF6 Gas |
| Short-Time Withstand Current (Isc) | 25 kA / 31.5 kA / 40 kA (1s) |
| Metering Accuracy Class (CT/VT) | 0.2S / 0.5 / 3P, 0.2 / 0.5 / 3P (Optional) |
| Degree of Protection (Enclosure) | IP54 / IP65 |
| Operating Temperature Range | -25°C to +40°C |
| Design Standards | IEC 62271-1, IEC 62271-100, IEC 61869 Series |
Benefits for Our Clients:
- Reduced Total Cost of Ownership: Lower land cost due to compact size, coupled with minimal maintenance needs, leads to significant long-term savings.
- Uninterrupted Revenue Collection: High metering accuracy ensures correct billing, protecting utility revenue streams.
- Future-Proof Infrastructure: The modular design allows for easy system expansion or reconfiguration as grid demands evolve.
- Improved Grid Stability: Reliable fault interruption and accurate load data contribute to overall network stability and efficient load management.
- Simplified Logistics & Installation: Pre-assembled, tested bays reduce on-site installation time and complexity.
Trust in Jinhua Dika Electrical is built on a foundation of proven manufacturing expertise and a global track record. With an annual export value ranging between US$1 Million and US$1.5 Million and a dedicated team of 11-50 professionals, we serve a diverse clientele across North America, South America, Europe, Asia, Africa, and Oceania. Our commitment to rigorous quality management systems, as evidenced by our ISO 9001 certification, and our comprehensive approach covering environmental (ISO 14000) and occupational health (OHSAS 18001) standards, guarantees a product that is not only high-performing but also responsibly manufactured. We ensure seamless delivery through major ports like Shanghai, Tianjin, Guangzhou, and Ningbo. Choosing our 33KV Gas Insulated Metering Unit means investing in a robust, accurate, and dependable solution that safeguards your grid operations and enhances your metering efficiency for years to come. Contact us today to discuss your specific project requirements.
Frequently Asked Questions (FAQ):
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Q: What are the primary advantages of a Gas Insulated (GIS) metering unit over an Air Insulated (AIS) one?
A: GIS units offer a compact footprint (saving up to 70% space), superior immunity to environmental conditions (dust, moisture, pollution), higher reliability, and significantly lower maintenance needs, making them ideal for space-constrained or harsh locations. -
Q: Can this unit be customized for different voltage ratios, like 33KV/11KV/110V?
A: Absolutely. The unit's design is modular. The voltage transformer (VT) ratios and the overall bay configuration can be tailored to match your specific system voltage requirements, including the standard 33KV/11KV/110V for metering purposes. -
Q: What is the typical delivery lead time for such a product?
A: Lead time depends on the order complexity and customization. For standard configurations, it typically ranges from 8 to 12 weeks ex-works. We provide accurate timelines upon receipt of detailed specifications. -
Q: How is the SF6 gas handling managed to ensure environmental safety?
A: The unit is factory-sealed with a guaranteed low leakage rate. We adhere to strict handling procedures, and the design often includes pressure relief devices and gas monitoring points. We recommend certified personnel for any servicing involving SF6. -
Q: Does the metering unit come fully assembled and tested?
A: Yes. Our standard practice is to supply complete, pre-assembled bays that undergo rigorous factory acceptance tests (FAT), including dielectric tests, mechanical operation tests, and primary injection tests for CTs/VTs, ensuring performance before shipment. -
Q: What after-sales support and documentation do you provide?
A: We provide comprehensive documentation (drawings, test reports, manuals), offer technical support for installation and commissioning, and supply spare parts. Our support network extends across our main global markets. -
Q: Are the internal Current and Voltage Transformers (CTs & VTs) replaceable?
A: Yes, the metering compartment is designed for accessibility. While the core GIS modules are sealed, the metering CTs and VTs are typically housed in accessible chambers or can be specified as withdrawable units for easier maintenance or calibration. -
Q: What standards does this product comply with?
A: The unit is designed and manufactured in accordance with international IEC standards, primarily the IEC 62271 series for high-voltage switchgear and the IEC 61869 series for instrument transformers. Compliance with specific regional standards (e.g., ANSI) can be discussed as an option.
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