Opening And Closing Switchgear

With the continuous development and progress of society, China's urban power grid has undergone great changes, and most cities have formed or are forming from more power load intensive areas. In the past, the power supply from the substation 12/24kV line (or branch line) to the direct user has been difficult to meet the requirements of urban development. Therefore, a new power supply method is produced by opening and closing the power supply to the user. However, with the intensification of urban densification, some of the original civil type openings and closures have been limited by land and urban planning, so a more advanced and practical outdoor intelligent openings and closures (outdoor ring cabinet) has emerged. This opening and closing house does not need civil construction and occupies less area, the configuration is very flexible and the power supply mode is more reliable, the construction and installation, debugging time is greatly shortened, and the overall cost is reduced.Intelligent opening and closing (outdoor ring network cabinet) is the use of foreign advanced technology, the 12/24kV switchgear, circuit breaker, load switch. Current and voltage backbone, 12kV power supply PT, switching station FTU, RTU, communication control terminal (CCU), 12/24kV metering and automatic meter reading, USP power supply and indicating instrument are installed and adjusted into a movable, sealed and moisture-proof stainless steel box. Thus, the integration and modular assembly of the primary and secondary systems of the urban distribution network are realized, the construction period is shortened, and the reliability of the urban power network operation is greatly improved.

With the continuous development and progress of society, China's urban power grid has undergone great changes, and most cities have formed or are forming from more power load intensive areas. In the past, the power supply from the substation 12/24kV line (or branch line) to the direct user has been difficult to meet the requirements of urban development. Therefore, a new power supply method is produced by opening and closing the power supply to the user. However, with the intensification of urban densification, some of the original civil type openings and closures have been limited by land and urban planning, so a more advanced and practical outdoor intelligent openings and closures (outdoor ring cabinet) has emerged. This opening and closing house does not need civil construction and occupies less area, the configuration is very flexible and the power supply mode is more reliable, the construction and installation, debugging time is greatly shortened, and the overall cost is reduced.Intelligent opening and closing (outdoor ring network cabinet) is the use of foreign advanced technology, the 12/24kV switchgear, circuit breaker, load switch. Current and voltage backbone, 12kV power supply PT, switching station FTU, RTU, communication control terminal (CCU), 12/24kV metering and automatic meter reading, USP power supply and indicating instrument are installed and adjusted into a movable, sealed and moisture-proof stainless steel box. Thus, the integration and modular assembly of the primary and secondary systems of the urban distribution network are realized, the construction period is shortened, and the reliability of the urban power network operation is greatly improved.

With the continuous development and progress of society, China's urban power grid has undergone great changes, and most cities have formed or are forming from more power load intensive areas. In the past, the power supply from the substation 12/24kV line (or branch line) to the direct user has been difficult to meet the requirements of urban development. Therefore, a new power supply method is produced by opening and closing the power supply to the user. However, with the intensification of urban densification, some of the original civil type openings and closures have been limited by land and urban planning, so a more advanced and practical outdoor intelligent openings and closures (outdoor ring cabinet) has emerged. This opening and closing house does not need civil construction and occupies less area, the configuration is very flexible and the power supply mode is more reliable, the construction and installation, debugging time is greatly shortened, and the overall cost is reduced.Intelligent opening and closing (outdoor ring network cabinet) is the use of foreign advanced technology, the 12/24kV switchgear, circuit breaker, load switch. Current and voltage backbone, 12kV power supply PT, switching station FTU, RTU, communication control terminal (CCU), 12/24kV metering and automatic meter reading, USP power supply and indicating instrument are installed and adjusted into a movable, sealed and moisture-proof stainless steel box. Thus, the integration and modular assembly of the primary and secondary systems of the urban distribution network are realized, the construction period is shortened, and the reliability of the urban power network operation is greatly improved.

With the continuous development and progress of society, China's urban power grid has undergone great changes, and most cities have formed or are forming from more power load intensive areas. In the past, the power supply from the substation 12/24kV line (or branch line) to the direct user has been difficult to meet the requirements of urban development. Therefore, a new power supply method is produced by opening and closing the power supply to the user. However, with the intensification of urban densification, some of the original civil type openings and closures have been limited by land and urban planning, so a more advanced and practical outdoor intelligent openings and closures (outdoor ring cabinet) has emerged. This opening and closing house does not need civil construction and occupies less area, the configuration is very flexible and the power supply mode is more reliable, the construction and installation, debugging time is greatly shortened, and the overall cost is reduced.Intelligent opening and closing (outdoor ring network cabinet) is the use of foreign advanced technology, the 12/24kV switchgear, circuit breaker, load switch. Current and voltage backbone, 12kV power supply PT, switching station FTU, RTU, communication control terminal (CCU), 12/24kV metering and automatic meter reading, USP power supply and indicating instrument are installed and adjusted into a movable, sealed and moisture-proof stainless steel box. Thus, the integration and modular assembly of the primary and secondary systems of the urban distribution network are realized, the construction period is shortened, and the reliability of the urban power network operation is greatly improved.

KYN28-12 indoor metalclad withdrawable switchgear is designed to be complete distribution equipment with three-phase A.C. singe busbar and single busbar section system having a rated voltage of 3.6~12kV and rated frequency of 50Hz.The switchgear is mainly employed in receiving and distribution of power energy from the network as well as starting of large-sized HV motors. In addition, the switchgear is provided with controlling, protection and monitoring functions. The switchgear conforms to IEC 298, GB 3906, DL/T404-91 and other standards. The switchgear itself owns five prevention functions such as prevention of misoperation of circuit breakers, prevention of pushing or pulling truck with load, prevention of closing earth switch under voltage, prevention of supplying power when earth switch is at the earth position and prevention of entering the electrical separation zone by accident. The switchgear selects not only VS1 vacuum circuit breakers but also ABB made VD4 vacuum circuit breaders, thus recogninzed as power distribution equipment with excellent performance.

1. Introduction
KYN28-12 indoor metalclad withdrawable switchgear is designed to be complete distribution equipment with three-phase A.C. singe busbar and single busbar section system having a rated voltage of 3.6~12kV and rated frequency of 50Hz.The switchgear is mainly employed in receiving and distribution of power energy from the network as well as starting of large-sized HV motors. In addition, the switchgear is provided with controlling, protection and monitoring functions. The switchgear conforms to IEC 298, GB 3906, DL/T404-91 and other standards. The switchgear itself owns five prevention functions such as prevention of misoperation of circuit breakers, prevention of pushing or pulling truck with load, prevention of closing earth switch under voltage, prevention of supplying power when earth switch is at the earth position and prevention of entering the electrical separation zone by accident. The switchgear selects not only VS1 vacuum circuit breakers but also ABB made VD4 vacuum circuit breaders, thus recogninzed as power distribution equipment with excellent performance.

2. Working condition
2.1 altitude: 1000m
2.2 temperature: -10celsius degree ~+40celsius degree
2.3 relative humidity: daily average value 95%, monthly average value 90%
2.4 saturated vapor pressure: daily average value 2.2 10-3MPa, monthly average value 1.8 10-3MPa
2.5 earthquake intensity: less than 8 degree
2.6 protect the product from fire, explosion, earthquake and corrosion atmosphere.

3. Main features:
3.1. the enclosure is completely adopts the aluminum-zinc alloy coated steel sheet, which are machined and bent by machine tool and then bolted;
3.2. all the operations are under the door closing condition
3.3. with high protection category, can prevent intruding of sundries and insects
3.4. simple efficient 5 protection function can prevent operating incorrectly
3.5. the removing compartment of the switchgear may be assembled with VS1(ZN63A) or VD4 vacuum circuit breaker according to customer s demand
3.6. the replacing of VCB is simple and the interchangeability of truck is good.
3.7. the cabinet body can be installed against the wall, so the maintenance can be made in front of the cabinet and the cover area can be reduced too.
3.8. cable compartment has enough room, can connect muti-cable
3.9. high speed earthing switch is used for grounding and loop short circuit
3.10. VCB vault, relay vault and cable vault can add extra heater separately according the demand of customer, in order to avoiding condensation pheromone and corrosion.
3.11. VCB vault and cable compartment can add extra lighting device separately, in order to convenient maintenance.

4. Main technical parameters
4.1 main technical of vacuum switchgear

item unit parameter
Rated voltage kV 3.6 7.2 12
Rated current A 630 1250 1600 2000 2500 3150
Rated frequency Hz 50
Rated short-time withstand current kA 16 20 25 31.5 40
Rated peak withstand current kA 40 50 63 80 100
Rated power-frequency withstand voltage kV 42/1min
Rated lightning impulse withstand voltage kV 75
Rated duration of short circuit S 4
Degree of protection IP4X


4.2main technical parameters of vacuum circuit breaker
Item Unit Parameter
Rated voltage kV 12
Rated current A 630 1250 1600 2000 2500 3150
Rated short circuit breaking current kA 25 31.5 40
Rated short-time withstand current kA 25 31.5 40
Rated short circuit making current kA 63 80 100
Rated short-time power-frequency withstand voltage kV 42/1min
Rated lightning impulse withstand voltage (peak) kV 75
Rated short circuit duration S 4
Closing time (rated voltage) ms 35 t 70
Opening time (rated voltage) ms 20 t 50
Rated breaking times of short circuit times 50 (40kAis 30)
Mechanical life times 20000

4.3main technical parameters of operation mechanism
Item Unit parameter
Rated operation voltage Opening coil V DC220/110
AC220/110
Closing coil
Rated operation current Opening coil A (DC/AC)220/110V: 0.9/1.8
Closing coil (DC/AC)220/110V: 1.0/2.0
Power of energy storage motor W 70
Rated voltage of energy storage motor V DC220/110 AC220/110
Energy storage time S 15

5. Structure instruction
The basic structure of switchgear panel comprises the panel itself and a removing part (truck). The enclosure and clap-board of the switchgear is bolted with Al-Zn alloy coated steel.Enclosure protection degree of switchgear is IP4X, and the protection degree of every vault is IP2X.


800/1000*1500*2300mm.

ASN3-12 air-insulated metal-clad enclosed switchgear is a new mv switchgear on the basis of introducing advanced techniques from foreign, abstracting our experiences in manufacturing the center located switchgear and assembling the world top class numeral controlled equipments. It is major used in 3.6~12kv 3-phase ac50/60hz power system to receive and distribute electrical power. Also it is used to control, protect and monitor the circuit.

1.The surfaces of conductors in the primary circuit are all disposed with vulcanization process. Thus the insulation lay have the characteristic of good attachment, high temperature endurance and even surface comparing with the static electricity process.
2.The frame is made of aluminum-clad zinc board together with rivet nut and high strength bolt.
3. Can be fitted with vn3 series center located high voltage ac vacuum circuit breaker.
4. With the function of manual urgent open switch, the operation is more convenient.
5. Equipped with new ek6 earthing switch, which make the operation convenient and the maintenance easily.
6.All switch operation is proceed with the door of high voltage compartment closed. Also the switchgear has the function of forcible closing the door and the safety is higher. The door can endure the inside fault current.

Product Description
XGN2-12 Trunk stationary metal sealed switchgear (hereinafter called switchgear) is used in the distribution system of 3. 6-12KV three phase 50Hz for electricity reception and distribution. It is especially suitable for the place where the operation is running frequently. Its bus bar system has the structure of single or double bus bar. We can also supply the type of insulation strengthened products according to the requirements of customers. This switchgear is in accordance with the standard of 'GB3906 3-35KV Metal Closed AC Switchgear' .

XGN2 Type Modular High Voltage Switchgear,High Voltage Switchgear,High and Low Voltage Switchgears
XGN2 type modular high-voltage switchgear cabinet is applied to receive and distribute the electrical energy in three-phase AC power system with rated voltage 3, 6, 10KV and rated frequency 50HZ
Product Description
XGN2 type modular high-voltage switchgear cabinet is applied to receive and distribute the electrical energy in three-phase AC power system with rated voltage 3, 6, 10KV and rated frequency 50HZ, especially for the frequently operated occasion. Its busbar system is a single busbar (which can derive the single busbar with bypass and double busbar structure). The switchgear cabinet is in line with the requirements of the National Standards GB3906 3-35KV AC Metal-enclosed Switchgear and the international Standard IEC298, also there are proposed "five anti" interlocking functions such as anti-breaking and closing by mistaken for circuit breaker, anti-breaking and closing disconnector switch with load, anti-breaking and closing grounding wire/switch with load, anti closing circuit breaker/disconnector switch with grounding wire/switch, anti entering charged interval by mistaken.

Product Features
The main switch of the switchgear applies ZN28A-10 series vacuum circuit breakers, equipped with CD117 series of electromagnetic operating mechanism and CT19 series of spring operating mechanism. Using GN-30 rotary isolating switch.
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