HBG-12 Environmental Protection Gas Closed Loop Network Switchgear
Model and meaning
Product features
comprehensive functions,combined product
The inflatable shell of the switchgear is made of high-quality 2.5mm.thick stainless steel plate by laser welding to make the gas tank sealed reliably with high mechanical strength, highly resistant to corrosion, and the protection grade of the inflatable shell is lp67: the gas tank is equipped with explosion-proof diaphragm to effectively prevent any damage to people and equipment due to high gas pressure, all conductive parts are enclosed in the gas tank to prevent influence of external environments and make it run reliably, free from maintenance (or with little maintenance), at the same time,it is compact as required.The main circuit is equipped with three-position switch (closing+ breaking + grounding) and vacuum arc-extinguishing chamber, is a mature configuration and ideal for current power grid operation and maintenance.
Environment-friendly without pollution
HBG-12 Environmental Protection Gas Closed Ring Main Unit Switchgear adopts level-zero dry air(purchased) or 99.99% pure N2 in accordance with GB/T 8979-2008, any gas leaked will not impactexternal environments, no need to recycle.
Flexible expansion design
HBG-12 Environmental Protection Gas Closed Ring Main Unit Switchgear has a modular design, and various modules are connected by special bus connectors for diverse combinations to meet the demands for these complicate and diverse power distribution design schemes in various areas of china as much as possible.
Complete mechanical interlocking
The operation panel of HBG-12 Environmental Protection Gas closed Ring Main Unit switchgear has complete five mechanical interlocks, all interlocks are configured inside; it is convenient to operate according to the operation manual.
1.Low-voltage instrumentation room
2.Marking
3.Operation chamber
4.Observation tube
5.Electric display
6.Cable chamber
7.Vacuum circuit breaker/load switch
8.Three position insulation/grounding switch
9.Pressure relief device
10.Switching mechanism
11.Three-position mechanism
12.Five-protection interlocking mechanism
13.incoming/outgoing cable through-wall bushing
Main technical parameters(circuit breaker cabinet)
| Item | Unit | Parameter | ||
| Rated voltage | kV | 12 | ||
| Rated frequency | Hz | 50 | ||
| Rated insulation level | 1min power frequency withstand voltage | Phase-to-ground,phase-to-phase | kV | 42 |
| Insulation breaking | 48 | |||
| Lightning impulse withstand voltage (peak ) | Phase-to-ground,phase-to-phase | kV | 75 | |
| Insulation breaking | 85 | |||
| 1min power frequency withstand voltage(phase-to-ground)of auxiliary/control circuit | kV | 2 | ||
| Rated current | A | 630 | ||
| Ratedinstantaneous withstand current(RMS) | Main circuit/grounding switch | kA | 25/4s | |
| Grounding circuit | kA | 21.7/4s | ||
| Rated peak withstand current | Main circuit/grounding switch | kA | 63 | |
| Grounding circuit | kA | 54.5 | ||
Main technical parameters(circuit breaker cabinet)
| Item | Unit | Parameter | |
| Rated short-circuit breaking current and times | kA/Time | 25/30 | |
| Rated short-circuit closing current(peak) | kA | 63 | |
| Rated cable charge breaking current | A | 25 | |
| Rated operating sequence of circuit breaker | O-0.3s-C0.180s-CO | ||
| Mechanical life | Circuit breaker/insulation switch | Time | 10000/3000 |
| Protection grade | Sealed enclosure | IP67 | |
| Switchgear shell | IP4X | ||
| Gas pressure | Rated gas charge level(20°C,gauge pressure) | Mpa | 0.02 |
| Minimum gas function level(20℃,gauge pressure) | Mpa | 0 | |
| Sealperformance | Annual leak rate | %/year | ≤0.05 |
Main technical parameters(Load switchgear)
| Item | Unit | Parameter | ||
| Rated voltage | kV | 12 | ||
| Rated frequency | Hz | 50 | ||
| Rated insulation level | 1min power frequency withstand voltage | Phase-to-ground,phase-to-phase | kV | 42 |
| Insulation breaking | 48 | |||
| Lightning impulse withstand voltage (peak) | Phase-to-ground,phase-to-phase | kV | 75 | |
| Insulation breaking | 85 | |||
| 1min power frequency withstand voltage(phase-to-ground)of auxiliary/control circuit | kV | 2 | ||
| Rated current | A | 630 | ||
| Rated instantaneous withstand current(RMS) | Main circuit/grounding switch | kA | 25/4s | |
| Grounding circuit | kA | 21.7/4s | ||
| Rated peak withstand current | Main circuit/grounding switch | kA | 63 | |
| Grounding circuit | kA | 54.5 | ||
| Rated short-circuit closing current(peak) | Load switch/grounding switch | kA | 63 | |
| Rated active load breaking current | A | 630 | ||
| Rated closed-loop breaking current | A | 630 | ||
| 5%Rated active load breaking current | A | 31.5 | ||
| Rated cable charge breaking current | A | 10 | ||
| Rated active load breaking times | Time | 100 | ||
| Grounding fault current breaking | A/Time | 31.5/10 | ||
| Circuit and cable charge current breaking with grounding fault | A/Time | 17.4/10 | ||
| Mechanical life | Circuit breaker/insulation switch | Time | 10000/3000 | |
| Protection grade | Sealed enclosure | IP67 | ||
| Switchgear shell | IP4X | |||
| Gas pressure | Rated gas charge level(20°C,gauge pressure) | Mpa | 0.02 | |
| Minimum gas function level(20℃,gauge pressure) | Mpa | 0 | ||
| Seal performance | Annual leak rate | %/year | ≤0.05 | |
Product structure diagram
Standard module-vacuum circuit breaker V
Standard Configuration and Features
◆630A bus
◆Vacuum circuit breaker
◆Vacuum switch electric actuator
◆Three-position insulation switch
◆Three-position insulation switch manual actuator
◆Vacuum switch and three-position insulation switch position panel
◆Cable bushing
◆Capacitive voltage indicator for live bushing
◆Gas pressure gauge
◆Padlock
◆Cabinet
◆Grounding bus
◆Handle
◆Current transformer (for protection)
◆Digital relay protector
Optional configuration and features
◆Short-circuit and grounding fault indicator
◆Separable connector (cable gland)
◆Arrester
◆Incoming line live/grounding block
◆Keyed mechanical interlock
◆Loop current transformer and meter
Standard module-load switch C
Standard configuration and features
◆Standard configuration and features
◆630A bus
◆Vacuum load switch
◆Vacuum load switch manual actuator
◆Three-position insulation switch
◆Three-position insulation switch manual actuator
◆Load switch and three-position insulation switch position panel
◆Cable bushing
◆Capacitive voltage indicator for live bushing
◆Gas pressure gauge
◆Padlock
Optional configuration and features
◆Vacuum load switch electric actuator
◆Short-circuit and grounding fault indicator
◆Separable connector (cable gland)
◆Arrester
◆Incoming line live/grounding block
◆Keyed mechanical interlock
◆Loop current transformer and meter
Standard module-potential transformer PT
Standard configuration and features
◆2 current transformers
◆PT protection fuse
◆1 voltmeter with conversion switch
◆Capacitive voltage indicator for live bushing
◆ Cabinet
◆Gas pressure gauge
Optional configuration and features
◆3 potential transformers
◆Arrester
◆Three-position insulation switch
◆Three-position insulation switch manual actuator
Standard module-metering module M
Standard configuration and features
◆630A bus
◆Potential transformer(two)
◆Current transformer (two)
◆PT protection fuse
◆Capacitive voltage indicator for live bushing
◆ Cabinet
Optional configuration and features
◆1 conversion switch
◆1 voltmeter
◆1/2/3 ammeters
◆1 active kilo-watt hour meter
◆1 reactive kilo-watt hour meter
