Sis Solid Fully Insulated Closed Switchgear

• Customization: Available
• Certification: VDE, CCC, ISO9001
• Shell Material: Aluminum Alloy
• Model NO.: SIS-12/(1250)
• Voltage Level: Medium Voltage
• Installation: Fixed
• Structure: Cabinet
• Current: AC
• Sold Units: V D C F PT
• Altitude: <=2000m
• Rated Voltage: 12kv
• Rated Current: 630A 1250A
• Transport Package: Pallet Wooden
• Specification: 600x900x2000
• Trademark: MINGZHE
• Origin: China
• Production Capacity: 2000PCS/Week

Product Description

Product Description

SIS-12/630(1250)-20(25)-31.5 solid insulated ring network switchgear is a new generation environmentally friendly composite insulated ring network cabinet developed by ourcompany. 
Mainly composed of three components,V unit (circuit breaker unit), C unit (load switch unit), F unit (combined with electrical unit),each unit can be used alone or freely expandable, and its structure is divided into intelligent control instruments Room,operating mechanism and primary part, the instrument room can be equipped with microcomputer protection (controller), the primary part adopts APG automatic gel process,the isolating switch and arc extinguishing chamber are completely sealed in epoxy resin,and there are use specially joints and bus bars to connect.The arc extinguishing chamber adopts special copper-chromium contact material, R-type longitudinal magnetic field contact,and a complete one-time sealing process. The interrupting short-circuit current capabilityand stability,electrical life, temperature rise and insulation level of the arc extinguishingchamber are all higher than before The arc extinguishing chamber (copper-aluminumcontact material, cup-shaped longitudinal magnetic field contact structure, and incompleteone-time sealing process) has been significantly improved.The operating mechanismadopts a spring-operated mechanism that cooperates with the switch, that is, the isolationswitch and the main switch spring-operated mechanism are integrated, which canfacilitate interlocking, and has fewer mechanical parts, reduces unnecessary transmissionlinks, and has high reliability.And can realize electric operation according to user needs.Solid insulation fully enclosed switchgear: it uses solid insulation material as the maininsulation medium and conductive connection, isolation switch, grounding switch, mainbus bar, branch bus bar and other main conductive loops, single or combined, and thencovered and packaged with solid insulation medium into one or more A fully insulated andfully sealed module with certain functions that can be combined or expanded again

 

1.IEC62271-1-2007  "High Voltage switchgear and Control Equipment, Part-General Specification"
2.GB1985 2004  "High Voltage AC Isolating Switch and Grounding Switch"
3.IEC620071-200-2003  "1-52KV AC Metal-enclosed Switchgear and Control Equipment"
4.GB3804 2004 "3.6KV ~ 40 5KV High Voltage AC Load Switch"
5.GB3906-2006 "3.6~ 40.5KV AC Metal-enclosed switchgear and control equipment"
6.DL/T404-2007 "3 6KV-40.5KV AC metal enclosed Switchgear and Control Equipment
7.DL/T593006 "Standard Common Technical Conditions for High Voltage Sswitchgear control equipment.
8.GB/T11022-1999 "Common technical conditions for high voltage switchgear and  Control Equipment Standrand.
9.GB1984-2003 "High Voltage AC Circuit Breaker"
10.Q/GDW7302012 "12KV solid Insulated ring main unit technical conditions"

 

Detailed Photos

Product Parameters

Use Enviroment
Altitude	≤5000 meters
Adaptto environmental temperature	-50°C ~+70°C
Air relative humidity	≤95% (+25°C)
Ground inclination	≤5°C
Earthquake intensiry	Nomore han&degrees
Switchgear Technical Paramaters
Items
Rated Voltage			Kv	12
Rated Frequency			Hz	50
Rated Current			A	630 1250
Rated Insulation level	Power frequency withstand voltage	Fracture	Kv	48
		Alternate	Kv	42
		Relative to ground	Kv	42
	Lighting impulse withstand voltage	Fracture	Kv	85
		Alternate	Kv	75
		Relative to ground	Kv	75
Rated short-circuit breaking current(1s)			Ka	25  31.5
Rated short-time withstand current(4s)			Ka	25  31.5
Rated peak-withstanddd current (1p)			Ka	63  80
Rated short-circuit making current(peak value)(1ma)			Ka	63  80
Shell protection gradde			IP4X
Operation mode			Spring energy storage type
Circuit Breaker Technical Parameters
Items		Unit	Data	Data
Rated Voltage		Kv	12
Rated Frequency		Hz	50
Rated insulation level	1min Power frequency withstand voltage	Kv	42
	Lighting impulse withstand voltage	Kv	75
Rated Current		A	630	1250
Rated short-circuit breaking current(1s)		Ka	20 25	31.5
Rated short-circuit making current(peak value)(1ma)		Ka	50 63	80
Rated peak withstand current(4s)		Ka	50 63	80
Rated short-time withstand current(effective value)		Ka	20 25	31.5
Rated short-time breaking current breaking times		times	30	30
Rated short-circuit breaking duration		s	4
Rated operation sequence	Automatic reclosing		Opening-0.3s-closing opening-180s-closing opening (rated short-circuit breaking current is below 31.5)
	Non-automatic reclosing		Opening-180s-closing opening -180s-closing opening (rated short-circuit breaking current is below 40ka)
Mechanical life		times	10000
Grounding switch  Technical Parameters
Items		Unit	Data	Data
Rated Voltage		Kv	12
Rated current			630	1250
Rated short-time withstand current(effective value)		Hz	25	31.5
Rated peak withstand current(peak value)		Kv	63	80
1 min power frequency withstand voltage	Between phase andto ground	Kv	42
	Isolation fracture		48
Rated lighting impulse withstand voltage	Between phase andto ground	A	75
	Isolation fracture	Ka	85
Mechanical life of isolating switch(open-close)		Ka	3000
Mechanical life of earthing switch(min-earthing)		Ka	3000
Grounding switch  Technical Parameters
Items		Unit	Data	Data
Rated Voltage		Kv	12
Rated current		KA	630	1250
Rated short-time withstand current(effective value)		Hz	25	31.5
Rated peak withstand current(peak value)		Kv	63	80
1 min power frequency withstand voltage	Between phase andto ground	Kv	42
	Isolation fracture		48
Rated lighting impulse withstand voltage	Between phase andto ground	A	75
	Isolation fracture	Ka	85
Mechanical life of isolating switch(open-close)		Ka	3000
Mechanical life of earthing switch(min-earthing)		Ka	3000
Break Technical Parameters
Items		Unit	Data	Data
Type of interrupter vacuum			Vacuum
Rated current		A	630	1250
Rated short-circuit breaking current	AC component effective value	kv	25
	Number of breaking times	times	30
Rated operating sequence			0-0.3S-CO-100S-CO
Rated short-time withstand current(duration)		ka/s	25/4,
Rated peak withstand current		ka	63
Rated short-circuit making current		ka	63
Average opening andd closing speed Opening speed	Opening speed	m/s	1.4+0.2
	Closing speed		0.8+0.2
Closing bounce time		ms	≤2	31.5
Opening contact rebound amplitude		mm	≤2	80
Closing time		ms	30-70
Opening time		ms	20-50
Three-phase different period		ms	≤2
Different phase grounding fault breaking test	Test current	Ka	21.7
	Test voltage	kv	12
Capacitive current breaking test	Test current	Ka	25
	Test voltage	kv	12
Main circuit resistance		uΩ	≤120
Mechnical life times		times	10000
Combination Appliances Parameters
Item		Unit	Data
Type of interrupter		A	Vacuum
Rated current		ka	125
Rated short-circuit breaking current		A	31.5
Rated transfer current		A	3150
Isolation Switch Paratmeters
Item		Unit	Data
Rated current		A	630 1250
Main circuit resistance		uΩ	≤2
Rated short-circuit withstand current		ka/s	25/4.
Rated peak withstand current		KA	63
Mechanical life		times	3000
Eearthing Switch Paratmeters
Item		Unit	Data
Rated short-circuit withstand current		ka/s	25/4.
Rated peak withstand current		A	63
Mechanical life		times	3000
Fuse tube Paratmeters

Fuse and transformer selection table
It has the following salient features:
1.Combined with vacuum load switch, the transfer current can reach 3150A;
2.Full range of distribution transformer protection, the maximum melting core current can reach 200A;
3.Double grounding pro tection, reliable five-proof interlock, higher safety performance:
4.Select standard fuses, convenient for users to prepare spare parts

Application field
1.Low temperature and cold area: No SF6 gas application, no need to consider the low temperature operation of SF6 gas, and it can operate normallyat -45° C.
2.Plateau area: There is no need to consider the infuence of plateau atmospheric pressure on insulation performance.
3.Areas with strong wind and sand: The safety protection grade of the solid insulation ring main unit is IP67, and the control circuit room adopts special treatment to ensure long-term operation in areas with strong wind and sand.
4.Coastal wet areas: epoxy resin sealing, moisture resistance, salt spray corrosion resistance, to ensure long term use in coastal areas.
5.Areas with high environmental protection requirements: The impact of SF6 gas on atmospheric warming has attracted great attention. The solid ring network cabinet has cancelled SF6 gas, and there is no pollution or harm to the environment and people.
6.In the smart grid: Since the main switch can be electric, the optional smart controller developed by our company can remotely control, remotely measure and remotely communicate the switchgear and and facilitate centralized control.substation site, which can perform decentralized control

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