Detailed Introduction
Product Description:
The 110 kV GIS Single-phase Voltage Transformer is an electromagnetic voltage transformer specifically designed for use with 110 kV gas-insulated metal-enclosed switchgear (GIS). It features a fully enclosed metal tank structure, with the interior filled with SF₆ gas at rated pressure as the primary insulation medium. The device connects directly to the GIS busbar via a bushing-type insulator, enabling precise acquisition of system operating voltage signals and providing stable, reliable voltage parameters for relay protection, measurement and metering, and monitoring devices. It meets the integrated, compact installation requirements of 110 kV GIS equipment. The product strictly complies with current domestic and international standards, including GB/T 20840 and IEC 61869, and is suitable for the voltage acquisition and safety‑protection needs of various 110 kV GIS substations.
Product Features:
1. A brand-new, custom-designed 110 kV GIS single-phase miniaturized voltage transformer, featuring a compact structure and a neat, well-defined appearance, with minimal installation footprint, perfectly compatible with the integrated layout of GIS equipment.
2. Employing a high-permeability, low-loss core and a high-precision winding design, the device delivers high measurement accuracy, strong load capacity, and excellent error characteristics, meeting both Class 0.2 metering and Class 0.5 protection requirements.
3. All-metal sealed tank structure, with internal insulation using SF₆ gas and no exposed insulating components, offering resistance to pollution flashover, condensation, and humidity, and adapting to complex atmospheric and insulation conditions.
4. Equipped with a built-in optimized equalizing shield system, it ensures uniform and smooth electric field distribution, extremely low partial discharge levels, stable long-term insulation performance, and eliminates the risk of discharge‑induced breakdown.
5. The sealing structure has undergone multiple reliability validations, with an annual SF₆ leakage rate well below 0.1%. It requires no gas replenishment or maintenance throughout its entire lifecycle, significantly reducing operation and maintenance costs.
6. Exhibits outstanding resistance to resonance and overvoltage, can withstand short-term system overvoltages and switching surges, demonstrates excellent saturation‑resistance, and ensures high operational safety.
7. Fully enclosed metal housing provides robust protection, unaffected by harsh environmental conditions such as high altitude, salt spray, sand and dust, acid rain, and humid heat; suitable for both outdoor and indoor use.
8. The winding insulation employs a multi-layer composite structure, providing ample insulation margins between turns, between layers, and between phases, with excellent resistance to aging and corona discharge, ensuring a long service life.
9. The enclosure is made of corrosion- and rust-resistant alloy, with a surface treated by special processes such as coating and passivation, ensuring excellent weather resistance and reliable long-term outdoor operation.
10. The installation method is flexible, allowing for horizontal or vertical mounting; the interface connectors are standardized and compatible with mainstream GIS equipment, ensuring convenient and efficient on-site installation and commissioning.
Parameter
Model number | JDQXF-66 | JSQ-66 | JDQXF-110 | JSQ-110 | JDQXF-220 | JDQXF-330 | JDQXF-500 | JDQXF-765 | |
Maximum Equipment Voltage (kV) | 72.5 | 126 | 252 | 363 | 550 | 800 | |||
Rated frequency (Hz) | 50/60 | ||||||||
Installation method | Upright/Inverted/Horizontal | ||||||||
Insulation type | SF6 | SF6 or mixed gas | SF6 | ||||||
Rated voltage factor | 1.2 times, consecutive | ||||||||
1.9 times, 8 hours | 1.5 times, 30 seconds | ||||||||
Rated Power-Frequency Withstand Voltage (kV) | 160 | 230 | 460 | 520 | 740 | 975 | |||
Rated Lightning Impulse Withstand Voltage (kV) | 350 | 550 | 1050 | 1175 | 1675 | 2100 | |||
Secondary winding (1a–1n) | Accuracy class | Class 0.2, Class 0.5 | |||||||
Rated Output (VA) | 50 | 100 | 50 | ||||||
Secondary winding (2a–2n) | Accuracy class | Class 0.5, Class 3P | |||||||
Rated Output (VA) | 50 | 100 | 50 | ||||||
Remaining winding (da-dn) | Accuracy class | 3P level | |||||||
Rated Output (VA) | 300 | ||||||||
SF6 rated pressure (20°C) (MPa) | 0.5 | 0.4 | |||||||
SF6 recharging pressure (20°C) (MPa) | 0.45 | 0.35 | |||||||
SF6 leakage rate (%) | <0.05% | ||||||||
SF6 trace moisture content (μL/L) | ≤150 | ||||||||
External dimensions | Height (mm) | 792 | 1000 | 792 | 1000 | 1310 | 1545 | 1725 | 2395 |
Length (mm) | 420 | 795 | 420 | 795 | 666 | 720 | 974 | 1358 | |
Width (mm) | 420 | 795 | 420 | 795 | 666 | 720 | 974 | 1358 | |
Base mounting dimensions | Mounting hole (mm) | 4×φ24 | 4×φ26 | 4×φ24 | 4×φ26 | 4×φ30 | 4×φ26 | 4×φ26 | 8×φ34 |
Hole spacing (mm) | 330×330 | 550×550 | 330×330 | 550×550 | 560×560 | 590×590 | 700×700 | 480×680/ 680×480 | |
Total product weight (kg) | 150 | 460 | 350 | 650 | 950 | 1800 | |||
Quotation Inquiry
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JDQXF-110
Product Installation and User Manual Download:
Keywords:
Voltage transformer for GIS
Contact Information
Service Hotline:
Service email: tkhgqscb@163.com
Company Address: No. 11526, Longtan South Road, High-tech Zone, Tai’an City, Shandong Province
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Specializing in the production of electrical metering and protection equipment.
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Service Hotline:
Service email: tkhgqscb@163.com
Company Address: No. 11526, Longtan South Road, High-tech Zone, Tai’an City, Shandong Province