Model NO.: Ring Main Unit Switchgear
Outing Structure: Metal-Enclosed Structure or Metal Clad
Components: Switches, Circuit Breakers, Fuses, Arrestors
Functions: Protection, Isolation, Electricity Distribution
Warranty Period: One Year
Product Type: OEM or ODM Customized Switchgear Products
Cabinet Parts: Incoming, Outing, Metering, Compensating
Protective Level: IP Level Value According The Applied Environment
Certification 01: GB/T 19001-2008/ISO9001:2008
Certification 02: GB/T 28001-2011/Ohsas18001:2007
Certification 03: GB/T 24001-2004/ISO14001:2004
Trademark: SHENRONG ELECTRIC
Transport Package: Normal Exporting Package
Specification: XGN15-12/24
Origin: China
HS Code: 8537109090
1. Product Name: Â Â Xgn15-12 High Voltage Air Insulated Metal Clad Ring Main Unit Switchgear
2. Product description:
   XGN15-12 Model High Voltage Enclosed Type Medium Voltage Arc Proof Air Insulated Metal Clad Ring Main Unit Switchgear is metal-enclosed combined type 10KV switch device, being applied to various distribution post,sub-section post and transformer substation as high voltage device of secondary distribution with its excellent performance, all performance parameters of which reach to and exceed domestic similar products' standard. GN15-12 series high voltage Ring Main Unit Switchgear is used intensively in the electronic power system in recent years and is promoted preferentially as high voltage product. It has completely replaced by the similar imported products.
3. Model explanation
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4. Performance features:
(1)XGN15-12/24 type unit/ modular SF6 ring main unit is a new generation full cabinet of SF6 switchgear, which is applied in distribution automation, compact and extensible metal sealed switch equipment, which has those features of simple structure, flexible operation, reliable inter-lock and convenient installation and so on. It can provide satisfied technology solution for various applied places according to different users' demand. Added the advanced technology parameters, portable and flexible assemble solution, the sensor technology and the newest protective relay is used and then it can fully meet the demand of market changing.Â
(2)The switch of XGN15-12/24 type modular SF6 ring main unit use FLN36/FLN48 model SF6 load switch, Schneider SC6 series load switch, ABB original SFG model, SF6 load switch/GN30 model isolated switch respectively and also it can assemble VS1 breaker or ABB original VD4 breaker and various fixed type breaker according to users' demand.
5. Main application:
  XGN15-12/24 type modular SF6 ring main unit is applied in electricity system of alternative current 50Hz,12/24KV and widely is used in cable ring of industrial and civil and power supply terminal engineering project.
6. Technology Parameters:
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| Incoming line cabinet |  |  |
| Item | Unit | Parameters |
| Rated voltage | kV | 12/24 |
| Rated current | A | 630/630 |
| Rated active load breaking current | A | 630/630 |
| Rated short time power frequency tolerant voltage 1 min | kV | 42/65 |
| Rated tolerant voltage by lightning impulse(Peak value) | kV | 75/125 |
| Rated short time tolrant current 3S | kA | 20/20 |
| Rated short time closing current(peak) | kA | 50/63 |
| Mechanical endurance | Time | ≥2000/2000 |
| Protection level of shell | - | IP3X / IP3X |
| Outing line cabinet |  |  |
| Item | Unit | Parameters |
| Rated voltage | kV | 12/24 |
| Rated current | A | 125/630 |
| Rated closed loop breaking current | A | 630/630 |
| Rated short circuit breaking current | kV | 31.5/ Limited fuse |
| Rated short-circuit closing current(peak) | kV | 80/ Limited fuse |
| Rated transfer current | A | 1700/1400 |
| Rated short time power frequency tolerant voltage 1 min | kA | 42/65 |
| Rated tolerant voltage by lightning impulse(Peak value) | kA | 75/125 |
| Mechanical endurance | Time | ≥2000/2000 |
| Protection level of shell | - | IP3X / IP3X |
7. Pictures as below:
8. FAQ
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| 001 | Q | What is electrical switchgear |
| A | Electrical switchgear is a key component in electrical power systems and is used to both distribute electrical power and to selectively isolate electrical loads. The switchgear is a switching device comprising of connecting or disconnecting switches, fuses or circuit breakers, protective and controlling devices which can be used to isolate electrical apparatus in faulty condition or during maintenance period, or to connect the same in desired healthy conditions. |
|
| 002 | Q | Do we need to monitor the switchgear conditions |
| A | Yes, Because switchgear distributes electrical current, heat build-up becomes an important characteristic to monitor. In particular, unexpected temperature rise at a particular location could indicate corrosion or some other type of defect. Thermal effects are especially visible in medium voltage switch gears used in distribution networks, where electrical currents may rise to few thousands of amperes. Thus keeping switchgears in proper condition over their long life becomes a critical issue. | |
| 003 | Q | What are the main causes of arc flashes in industrial switchgear? |
| A | The main causes of arc flashes in industrial switchgear are: the application of tools to energize switchgear, deteriorated insulation on phase bus bars, and loose electrical connections that overheat. These things can be prevented by proper safety measures and regular maintenance. |
|
| 004 | Q | What is the lowest voltage at which arc flashes occur? |
| A | 120 volts is generally considered the lowest voltage at which arc flashes occur. The voltage of industrial switchgear can exceed this voltage by hundreds of thousands of times. |
|
| 005 | Q | What is Metal Enclosed Switchgear? |
| A | Metal Enclosed Switchgear is a switchgear assembly that encloses all necessary equipment and device in separate metal vertical structure (i.e MCCs, PCC), however they each metal compartment are not separated from one another by metal barriers. It's used often with low voltage equipment. |
|
| 006 | Q | What is Metal Clad switchgear? |
| A | Metal Clad Switchgear is a switchgear assembly that encloses all necessary equipment and devices in one metal house, but compartments in this assembly is separated from one another by metal barrier. When metal clad switchgear is used or assumed when MV switchgear is provided. |
|
| 007 | Q | Difference between Metal Enclosed Switchgear and metal Clad Switchgear. |
| A | Metal enclosed switchgear: Assembled with separate metal vertical section Metal Clad Switchgear: Assembled in one metal structure. MES: each compartment is not separated from one another with metal barrier. MCS: each compartment is separated from one another with metal barrier. MES: Frequently used in LV system. MCS: Frequently used in MV System. When MCS is said MV Switchgear is assumed. MES: All breakers and other switching devices are fixed type. MCS: All breakers are withdrawable type. |
9. Ordering Instructions
| Ordering instruction(Armored Movable Alternative Current Metal Sealed Switchgear Equipment) | |
| Please provide those below detailed information, when you order the switchgear. | |
| 001 | Main connection wire solution serial number and single line system diagram, arrangement and plane layout drawing |
| 002 | Main connection line solution serial number, purpose and single line system diagram, rated voltage, rated current, rated short circuit breaking current, distribution electricity chamber plane layout diagram, arrangement diagram of switchgear and so on. |
| 003 | Secondary connection wire diagram, terminals arrangement diagram. If you can't provide terminals arrangement diagram, we will provide the terminals arrangement according to manufacturer's diagram. |
| 004 | Requirement of switchgear control,measurement and protection function and requirement of other shutting and automatic device. |
| 005 | Model, specificaton, quantity of switchgear equipment's electrical apparatus elements |
| 006 | Electrical equipments summary sheet |
| 007 | If the interspace of switchgears or incoming line cabinet need bus line bridge to connect, please provide rated load current of bus line bridge. |
| 008 | If you need busbar (busbar between two array cabinets and busbar between wall cabinets), please provide detailed span and high altitude distance. |
| 009 | If the switch equipments are used in the special environment conditions, please put forward it when you order the switchgear. |
| 010 | When you need other apparatus or exceed attachment supplied equipment list, please put forward model and quantity you need. |
| 011 | Other special requirements. |
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