252kV Gas-Insulated Switchgear (GIS)

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L/C,T/T

Incoterm:

FOB,CFR,CIF

Min. Order:

1 Set/Sets

Delivery Time:

30 Days

Transportation:

Ocean,Land,Air

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Product Description

Product Attributes
Product Feature
Product description

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Overview

Product Attributes

Model No.: ZF12-252 / HGIS-252

Brand: HENGFENGYOU

Application: Power distribution

Phase: Single-phase Enclosure (Standard for 252kV)

Rated Voltage: 252kV

Rated current: 3150A / 4000A

Frequency: 50Hz / 60Hz

Degree of protection: IP67 (Gas Compartment)

Standard: IEC 62271-203

Certificate: CB CCC SABS

Shell Material: Steel

Origin: China

Packaging: Plywood

Delivery Time: 30 Days

Product Feature

Product description

Product Overview
The 252kV Gas-Insulated Switchgear (GIS) serves as the critical cornerstone for provincial hubs and backbone power grids. Engineered for high-voltage transmission networks, this system provides a High Interrupting Capacity to manage massive short-circuit currents while maintaining the highest levels of system stability and reliability under extreme grid stress.
Key Features
High Interrupting Capacity: Designed with advanced arc-quenching technology, it is capable of clearing severe faults in backbone networks with absolute precision and speed.
Superior Environmental Resilience: Specifically optimized for harsh conditions, including high-altitude plateaus and high-salt spray coastal zones, ensuring consistent performance where traditional air-insulated gear fails.
Aluminum Alloy Enclosure: The high-grade Aluminum Alloy Enclosure offers exceptional natural corrosion resistance and significantly reduces eddy current losses, extending the equipment's service life beyond 30 years.
Ultra-Low Leakage Rate: Utilizing advanced sealing technology, the system guarantees an annual Gas Leakage Rate of $\le$ 0.1%, meeting the "Life-long Sealing" quality benchmark.
Double-break Structure Option: For critical nodes requiring enhanced isolation security, we offer a Double-break structure configuration to provide redundant safety during maintenance and network switching.
Technical Specification

Parameter	Specification
Rated Voltage	252kV
Rated Current	3150A / 4000A
Rated Breaking Current	40kA / 50kA
Annual Gas Leakage Rate	≤ 0.1%
Mechanical Endurance	10,000 Operations (M2 Class)

Application Environment
Provincial Hub Substations: The core switching authority for 252kV backbone transmission lines.
Extreme Altitude Projects: Reliable dielectric strength maintained in low-pressure environments above 3000m.
Offshore & Coastal Wind Hubs: The Aluminum Alloy shell prevents salt-air corrosion, making it the top choice for maritime energy landing points.
Heavy Industrial Infrastructure: Provides uncompromising power security for massive smelting plants and national-level manufacturing bases.
Why Choose Us (HENGFENGYOU ELECTRIC)
Backbone Grid Expertise: Our 252kV GIS is designed to meet the rigorous demands of national power authorities, focusing on "Zero Failure" operational philosophy.
Modular Engineering: Despite its high voltage rating, the Modular Design allows for efficient transport and Rapid on-site assembly, significantly reducing civil construction time.
Rigorous Testing: Every unit undergoes exhaustive partial discharge and impulse voltage testing in our state-of-the-art labs before shipment.
FAQ
1. Is this 252kV unit suitable for high-altitude regions?
Yes. By optimizing the internal gas pressure and external insulation distances, our 252kV GIS is engineered to operate reliably in high-altitude regions without derating.
2. What is the benefit of the Double-break structure?
The double-break option provides an additional layer of physical isolation. It is particularly valued by grid operators for critical hub substations where a "visible" and redundant gap is required for maximum maintenance safety.
3. How does the Aluminum Alloy enclosure improve efficiency?
Unlike steel, aluminum is non-magnetic. This prevents the generation of eddy currents when high currents pass through the conductors, reducing heat generation and saving significant amounts of energy over the life of the substation.
4. What kind of maintenance does a 252kV GIS require?
Due to the sealed-for-life design and the $\le$ 0.1% leakage rate, primary maintenance is minimal. It mainly involves periodic infrared thermography and remote monitoring of the gas density gauges.

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