• 72.5kV 126kV 145kV HV Gas Insulated Switchgear (GIS)
72.5kV 126kV 145kV HV Gas Insulated Switchgear (GIS)
discuss personally
Model
ZF27-145/2000-40
ZF27-126/2000-40
ZF27-72.5/2000-40
Basic info
Brand ROCKWILL
Model NO. 72.5KV 126KV 145KV Gas Insulated Switchgear (GIS)
Rated voltage 145kV
Rated normal current 2000A
Series ZF12B
Product Detail

Description:


Gas Insulated Switchgear (GIS) is a 3-phase AC high-voltage solution engineered for precise control, measurement, protection, and switching of transmission lines. With over 5,000 installed bays globally, it has been exported to countries like Thailand and Equatorial Guinea, attesting to its international acclaim.

The ZF12B -72.5/126/145 (L) GIS integrates essential substation components, including circuit breakers, disconnectors, earthing switches, voltage transformers, current transformers, and surge arresters. Designed with a three-phase, single-enclosure layout, it streamlines functionality. Notably, its innovative 3-working-position DS/ES (disconnector/earthing switch) combination optimizes the structure, delivering a more compact and space-efficient solution.

Main Features:


  • Space-Efficient Design: The 3-working-position DS/ES system offers a compact footprint, flexible configurations, physical mechanical interlocks, and enhanced reliability, ensuring seamless operation and safety.

  • Low-Maintenance Operation: Its oil/gas-free mechanism simplifies construction, reduces upkeep requirements, and guarantees consistent, dependable performance.

  • Robust Construction: Crafted from lightweight aluminum alloy, the enclosure minimizes temperature rise, resists corrosion, and ensures long-term durability.

  • Superior Sealing: Double-sealing technology maintains exceptional gas tightness, with an annual leakage rate below 0.5%, safeguarding insulation integrity.

  • Optimal Performance: Delivers outstanding insulating, conducting, and current-carrying capabilities, meeting the highest industry standards for power distribution.

Technical Parameters:


ZF12B-145(L)GIS.png

What is the principle of the protection function of gas-insulated switchgear?


Protection Function Principles:

  • GIS equipment is equipped with various protection functions to ensure the safe operation of the power system.

Overcurrent Protection:

  • The overcurrent protection function monitors the current in the circuit using current transformers. When the current exceeds a predefined threshold, the protection device triggers the circuit breaker to trip, cutting off the faulty circuit and preventing damage to the equipment due to overcurrent.

Short-Circuit Protection:

  • The short-circuit protection function quickly detects short-circuit currents when a short-circuit fault occurs in the system and causes the circuit breaker to act rapidly, protecting the power system from damage.

Additional Protection Functions:

  • Other protection functions, such as ground fault protection and overvoltage protection, are also included. These protection functions use appropriate sensors to monitor electrical parameters. Once any abnormality is detected, the protection actions are immediately initiated to ensure the safety of the power system and equipment.



Know your supplier
ROCKWILL
Rockwill Electric Group Global Manufacturer of High voltage and medium-voltage power equipment and smart grid solutions. Headquartered in Wenzhou, China. Serving 100+ countries with quality, innovation, and trust. What We Offer: • HV-MV switchgear (VCB, SF₆ circuit breakers, RMU, GIS) • Distribution transformers and substations • Smart grid and monitoring systems • Solar, wind, EV charging, and energy storage solutions • EPC turnkey power projects Certified: ISO 9001 / ISO 14001 / ISO 45001
Main Categories
High voltage
Business Type
Design/Manufacture/Sales
Highest Annual Export (USD)
$150,000,000
Professional Experience
16 years
Workplace
108000m²m²
占位
占位
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