Product classification
66~132kV Insulated Metal Enclosed GIS ( Including SF6+N2 Scheme)
The main technical parameters of this product have reached the leading domestic and international advanced levels, meeting the highest requirements of national standards, power standards, and IEC standards for this voltage level product. Some parameters are higher than national standards and IEC standards. (IncludingSF6+N2Scheme）
- Description
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The main technical parameters of this product have reached the leading domestic and international advanced levels, meeting the highest requirements of national standards, power standards, and IEC standards for this voltage level product. Some parameters are higher than national standards and IEC standards. (IncludingSF6+N2Scheme)
Installation Location Indoor or Outdoor
Ambient Temperature Indoor type -25 ℃~+40 ℃/Outdoor type -40 ℃~+55 ℃
Altitude flat type ≤ 1000m/plateau type ≤ 4500m
Air Pollution level IV
Ice thickness ≤20mm
Seismic intensity: horizontal acceleration of 0.5g, vertical acceleration of 0.5g
Rated Voltage 66~132kV
Rated Frequency 50Hz
Rated Current 3150A
Rated short-time withstand current 40kA/4s
Rated peak withstand current 100kA
Power frequency withstand voltage (Phase to phase, Phase to ground/Fault to fault 230/230+73kV
Lighting impulse voltage (Phase to phase, Phase to ground/Fault to fault 550/550+103kV
► Product Advantages
1) The newly designed miniaturized GIS has a minimum interval width of 0.8m and a standard interval area of 2.8m^2, which is at the leading level in China.
2) The CB equipped with GIS adopts the self-energy arc extinguishing principle of "thermal expansion assisted blowing", with strong breaking ability and short arc ignition time. Fully open and disconnect time of three cycles, long electrical life, 21 full capacity disconnections, and a simple and reliable structure.
3) The circuit breaker is equipped with a CTB-I type spring-operated mechanism, which has a simple and compact structure, high reliability, low maintenance workload, and a mechanical life of up to 10000 times, meeting the requirements of "oil-free“.
4) The GIS shell is made of aluminium alloy material, which is lightweight, requires minimal on-site construction work, has low requirements for foundation load, is corrosion-resistant, has low eddy current loss, and has low shell temperature rise.
5) Radio interference level below 500 μV, suitable for installation near urban and residential areas.
6) Strong environmental adaptability, suitable for areas with harsh environmental conditions (such as severe pollution, high water fog, hail areas, etc.), high-altitude and earthquake-prone areas, as well as busy urban areas with tight land use and the mountainous regions with difficult excavation of earth and stone for hydropower stations.
► Typical Product Layout
1- Overhead Incoming and Outgoing Spacing
► Typical Product Layout
2- Outgoing Cable Interval
► Typical Product Layout
3- Bus PT Interval
Product Overview
Vehicle-mounted Skid-mounted GIS (Switch Truck Module) is an integrated, modular and movable high-voltage switchgear. The core components of 66~132kV GIS (circuit breaker, three-position disconnector, earthing switch, CT/PT, lightning arrester, busbar, etc.) are pre-assembled as a whole on a high-strength skid-mounted chassis, which is adapted to heavy-duty semi-trailers. It forms an independent switch truck unit featuring "factory prefabrication, integral transportation and rapid on-site commissioning".
It can be used alone or combined with a main transformer truck and a secondary equipment truck to form a vehicle-mounted mobile substation, which is widely applied in scenarios such as emergency power supply guarantee, load transfer, substation renovation and temporary grid connection.
Core Product Features
1、HigIntegration and h Ultra-compact Structure
All high-voltage equipment of the entire substation is integrated into a single skid-mounted module, covering only 35% of the floor area of a conventional substation, which greatly saves space.
2、High Mobility and Rapid Deployment
The integrated vehicle-mounted design enables quick transportation to sites and adapts to complex working conditions such as mountainous areas, urban regions and field environments.
3、Factory Pre-fabrication and Reliable Quality
All components are pre-assembled and fully commissioned in the factory, reducing on-site installation errors and construction time.
4、Safety, Intelligence and Easy Operation & Maintenance
Equipped with online SF₆ pressure monitoring, partial discharge monitoring and intelligent control cabinets.
The fully enclosed metal structure combined with reliable grounding prevents electric shocks and misoperations, ensuring superior safety.
5、Reusability and Outstanding Cost-effectiveness
It can be relocated and reused multiple times. Compared with conventional substations, it requires no permanent land acquisition, features lower civil engineering costs and shorter construction periods.
Typical Application Scenarios
1、Emergency Power Supply: Rapidly restore power supply after grid faults and natural disasters to ensure power for people's livelihood and critical loads.
2、Substation Renovation: Provide temporary power supply during the maintenance and renovation of old substations to achieve "zero power outage and zero risk".
3、Temporary Grid Connection: Support temporary grid connection for wind power, photovoltaic and energy storage projects during construction, shortening the grid connection cycle.
4、Load Transfer: Flexibly transfer power loads for capacity expansion in urban core areas and power guarantee for large-scale events.
5、Overseas EPC Projects: Adapt to harsh environments such as high temperature, deserts and high altitudes, enabling quick delivery and commissioning.
Key Technical Parameters
Item Parameter Rated Voltage 66~132kV Rated Frequency 50Hz Rated Current 2500A/3150A Rated Short-circuit Breaking Current 40kA（2s） Rated SF₆ Pressure 0.6MPa（20℃） Annual leakage rate ≤0.1% Mechanical service life ≥10,000 times Partial discharge level ≤5pC (Standard type)
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