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JGAIS-12 series Environmental-friendl煙校y Gas Insulated Ring學懂 Main Unit

Full Gas Insulated Intellige離厭nt Ring Main Unit

As global warm費女ing becomes increasingly pro水現minent, the environmental 草如awareness of people also incre喝用ases. Medium voltage 火自switch devices have been increasing煙光ly used in the grid 對山distribution system by l樹為ots of middle voltage users. 湖有

As global warming beco草綠mes increasingly prominent醫書, the environmental awa商子reness of people also 土問increases. Medium voltage swi要志tch devices have been&事厭nbsp;increasingly&nbs站金p;used in the grid distribution說慢 system by lots of middle呢校 voltage users.They are also the es空友sential products of Stro舊懂ng Smart Grid, which relate di體煙rectly to the safe and reliab銀的le operation of the grid. Wh爸生ile the economy is developing sustainab火影ly and cities are expanding, medium vo讀友ltage gas insulated switchgears空海 (GIS), with merits such as small vol文內ume, free of maintenance, 得靜high reliability und跳街er harsh climates and術個 notable economic benefits, have devel錯靜oped prosperously since 19廠動90s, and the demand is also growing. 理務However, the SF6 gas used開月 in the middle voltage G亮劇ISs is one of the six kinds 說舊contributing to the g我愛reenhouse effect, and is w土少idely questioned. Therefore笑人, scale production of GISs wit妹兒hout / with less SF6 wi跳金ll increase the economy and pro雜公vide excellent stability of p麗得erformance and a structu會志re of light weight simultaneou家劇sly. It is an irreversible 長水trend for metal-enc老筆losed switchgears wi長雨thout / with less SF6 gas to take p林靜lace of air-insulated an自光d SF6 gas-insulated metal-en生紙closed switchgears.

For the above ment樹頻ioned purpose, the switch manufac呢動turing industry has worked hard for m海海ore than ten years seeking an enviro路草nmentally friendly kind of substitu來海tive gas. It’s been a significant resea音月rch subject to study the prop船東erties of substitutive g西林as and develop middle voltage GISs 美一without / with less SF6.路銀

With their abundant R &a暗有mp; D and manufacture experience體場 on vacuum circuit breaker都訊s and fully enclosed GISs, the R 現玩& D team of Jilin Ji綠多nguan Electric Co., Ltd. has, bas制明ed on the design con舊市cept of environmental protection and 用路 intelligence, developed the JGAIS s友得eries environmentally friendly gas-in場花sulated metal-enclosed switchgear相劇s. Instead of SF6 ga習不s, such switchgears use dry air a北農s their insulation m好舞edium. The primary main ci通靜rcuit is enclosed a gas tank, which i吧坐s welded with advanced robot welding te放又chnology and helium mass spectrom美南eter leak detected. A vacuum 農地arc chute of reliability and ma個些turity is employed a那到s the circuit breaker and th窗自e main on-off element of the loa物睡d switch. All items mentioned above 筆照plus a uniquely desi報道gned three-location is門對olating switch make sure the operatio大銀n and maintenance of the distribution答醫 network is safe and reliable. 子間

S/N	Item			Unit	Parameter
1	Rated voltage 北問			kV	12
2	Rated current 還計			A	630/1250匠林
3	Rated insulation level 知近	1min power freq些冷uency withstand voltage 多答	Phase to phase and phas計輛e to ground	kV	42
		1min power freq些冷uency withstand voltage 多答	Fractures	kV 舊公	48
		Lightning impulse w空師ithstand voltage (peak)分聽	Phase to phase and ph銀路ase to ground 兒中	kV	75
		Lightning impulse w空師ithstand voltage (peak)分聽	Fractures	kV	85
4	Circuit breaker 通風	Rated short-cir音司cuit open current 學地		kA	20/25
		Rated short-circuit 理時closing current (peak) 會暗		kA	50/63
		Rated short-time withstan習唱d current (4 s)		kA	20/25
		Rated peak withstan林裡d current		kA	50/63 林中
		Rated operation sequence 體章		—	O-0.3s-CO-180s-C能理O
		Mechanical life	Circuit breaker	Times	10000 知明
		Mechanical life	Three-position disconnector and雨飛 grounding switch	Times 懂藍	5000
5	Load-break switch	Rated short-time wit樹爸hstand current		kA	20
		Rated peak withstand 年如current		kA	50
		Mechanical life	Load-break swit姐事ch	Times	10000
		Mechanical life	Three-position 木長disconnector and grounding s站又witch	Times	5000
		Load switch opening and clos黃間ing cycle level		Level	E3
6	Rated inflation pr來通essure of gas tank （gage pressure a窗飛t 20℃）（filled with dry air）有弟			MPa	0
7	IP grade of gas t拿光ank			—	IP67
8	IP grade of cabine村錯t			—	IP4X
9	Annual leak rate			—	≤0.05% 市對

1. Employs vacuum arc extinction techn區海ology and uses environmentally 能時friendly dry air as the m錯草ajor insulating medium instea你文d of SF6 gas;

2.The cabinet is designed to be 女吃fully enclosed and insulated 匠機without any exposed live parts a答司nd can therefore operate in sever自很e environment for a long time日在;

3. The gas tank is design坐窗ed to be zero gauge pressure with a p白喝rotection grade of IP 6話但7. The occurrence of leaks is小跳 reduced to almost none to 朋坐significantly prevent th照弟e possibility of inva光海sion of dust and damp;

4. The gas tank is designed 自有to be zero gauge pres嗎喝sure, therefore it can run safely u懂對nder zero gauge pressure and fu從下lfill all related test st對拍andards.

5. An explosion-proof membrane is p高還rovided to the bottom of腦科 gas tank. In the case that the press我坐ure increases due to internal內嗎 faults, the membran靜電e will explode to release the 東亮pressure and the gas will be discharg低技ed to the back to avoid damaging不站 operators in front of the cabin時和et;

6. By upper isolation, it is a請可ble to be grounded and cl書志osed with the arc extinguishing chamber車窗, thus ensuring the safety and relia森雪bility.

7. The three phases at the事說 disconnector fracture are independe答這nt and visible. Contactor positi商外ons are directly visible and pr計鐘ovided with LED ligh多技ting;

8. The switch cabinet has passed the i男子nternal arcing test, IAC志店-AFL/20KA, 1S;

9. The structure is designed as 大空standardized and modularized for the e家能xtension of circuits, exchange of東也 units and alteration of plan;

10. The functions are compl林兒eted by fundamental functio輛時n units such as load s中開witches and circuit breake愛議rs and typical function u說關nits such as enhancement cabi家風net, contact cabinet, PT 物那cabinet and measure c議司abinet;

11. Fully modularization is ful藍友filled by plug-in type extension busbar學刀 through arbitrary co不算mbinations;

12. Small volume and sm農得all occupied area with the minimum vo多來lume for a single device t來工o be: 450*905*1500 (mm).

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