SIS-24/630(1250)-20(25)-31.5
VDE, CCC, ISO9001
Aluminum Alloy
Medium Voltage
Fixed
Cabinet
AC
V D C F PT
<=2000m
12kv
630A 1250A
MINGZHE
Pallet Wooden
600x900x2000
China
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
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" |
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°rees | |||
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 | ||||