Gas Insulated Switchgear Combination switch
126kV Gas Insulated Switchgear Combination switch HGIS
ZHW -126/3150-40 type Combination switch HGUS
Introduction:
1. This kind of GIS has good ability of switch-on and switch-off, it can break short circuit current of 50kA without
shunt capacitor, the breaker is single fracture and the interrupter room is adopted single voltage, bidirectional
and synchronized wind blowing.
2. The ability of witch-off is rather good, the insulation level is very high and the breaker can switch on and off
20 times without maintain.
3. The flow is very good and the breaker does not need any springs and the contactor of spiral spring and
silver coating all guarantee the flow and the high conductivity.
4. The insulation pole has good strength and can endure electricity and impulse, the mechanical longevity is
5000times.
5. It has outstanding operation motors, one kind HMB-4 is hydraulic structure made by , the other is made
by
6. It has good adoption into zones of low temperature and can be used humid and badly polluted areas.
ZHW -126/3150-40 type composite electrical apparatus (HGIS) is
A combined tight type switchgear with SF6 as the insulating gas. It will remove
All combinations of primary electrical components other than transformers and busbars, generally including circuit breakers
Devices, isolating switches, grounding switches, current transformers, fast grounding switches, when needed
It also includes voltage transformers and lightning arresters, with both sides of the equipment connected to conventional ones through outlet sleeves
Open type main busbar connection.
HGIS can be combined into various main wiring methods according to user requirements for transmission and transformation
Open and close no-load, load and fault current, load conversion, isolation circuit, and connection of the electrical system
Ground protection and measurement of electricity consumption, etc.
1. HGIS has high technical and economic indicators, and has reliability and ease of maintenance similar to GIS in terms of performance; Economically, it can benefit users. it
The product price is 53% cheaper than GIS, which is 1.5 times that of AIS. After including the land cost and excavation cost, the total investment of the switch station is estimated to be 45% -50% less than using GIS, and 45% -50% less than using AIS
About 30% more expensive.
4. Quick fault handling. GIS integrates the primary equipment of the entire substation, including circuit breakers, lightning arresters, and busbars, into a sealed tank of sulfur hexafluoride, with a high degree of integration
Very high. However, due to high integration, it can also bring unfavorable factors. Once a component malfunctions, the entire substation will experience a power outage, expanding the scope of the outage,
The loss is relatively large. For example, common air leakage problems are difficult to identify due to their large scope, which increases the difficulty of power outage maintenance and prolongs the duration of power outages. And HGIS
It is to place a phase circuit breaker, isolation switch, and grounding switch as a module in a sulfur hexafluoride sealed tank, with each phase having an independent shell for reliability and flexibility
Higher. Unlike GIS, for HGIS, if a phase has a problem, it can be replaced, greatly reducing the time for power outage maintenance.
2. Due to the use of overall assembly and debugging, transportation, and on-site construction and installation in the manufacturing plant, the construction and installation are simple and convenient. The device only needs to be simply connected on site
Okay. At the same time, the demand for substation supports and steel has been reduced. At the same time, due to the small foundation, small engineering quantity, and low concrete consumption, the basic work and cost expenses are greatly reduced.
main features
3. Complete sets of primary and secondary equipment. The trend towards intelligence and digitization of secondary equipment has laid a good platform for the intelligent construction of substations.
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