252KV Gas-insulated Metal-enclosed switchgear(GIS)

252kv GIS has high safety and reliability,easy maintenance and repair,low noise ,short installation period. ZF16-252(L)/Y4000-50 Gas-insulated Metal-enclosed switchgear

This product is developed on the basis of research on GIS for many years and absorption of domestic and foreign GCB technology;

Feature:

 1,Epoch-making compact:volume contracted GIS is merely 40% of common deflection phase type GIS.

2,Minimum volume,light weight and earthquake resistant:it is product of minimum volume among similar domestic GIS compartment units,standard compartment width is only 1.2 to 1.5m;casing and conductor adopt aluminum alloy material ,which features corrosion resistant,light weight and good earthquake resistant performance ,standard compartment weight is about 2 to 4 MT.

3,Strong breaking capacity:circuit breaker adopt self-energy arc extinction principle,has very high short circuit breaking and closing capacity,charging current of breaking and closing circuit has no re-strike and re-arcing phenomena.electric life reaches 16 times;isolating switch could meet the requirement of closing bus transfer current and bus charging current ,earth switch could meet the requirement of closing short circuit current and closing induction current;

Rated voltage	252kv;
Rated frequency	50Hz(60);
Rated current	2000--4000.
Rated short time withatand current	30KA/3S
Rated peak withstand current	125KA
Rated short time power frequency withatand voltage	To earth:460kv
	Between fractures:460+145kv
	Phase to phase:460+200kv
Rated lightning impulse withatand voltage	To earth :1050kv
	Between fracture:1050+200kv
SF6 gas pressure(20) rated value/alarm value/locking value	Compartment:0.6/0.55/0.5Mpa
SF6 gas pressure (20) rated value/alarm value	Other compartment:0.5/0.4Mpa
SF6 gas water content(volume ratio) control value/permissible value	Circuit breaker compartment: 150/300ppm
	Other compartment:<250/500ppm
Yearly leakage rate of SF6 gas	<0.3%
Control circuit and auxiliary circuit voltage	DC110 or 220v,AC 220 or 380v
Interval width	2.1M

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