Products Description
What is Automatic Ring Main Unit?
Automatic Ring Main Unit is a medium-voltage ring network power supply equipment that integrates automated control and intelligent monitoring. It can realize intelligent control such as power distribution, fault detection, fault isolation, and remote control. Compared with traditional ring network cabinets, it adds intelligent control systems and multi-dimensional Sensors, communication modules and other new devices. The advantages are that it can reduce operation and maintenance inspections, reduce the risk of misoperation, make it almost non-perceptible for users in fault areas to lose power, and reduce high losses caused by power outages.
Established
years experience
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Our advantages
Safe fully insulated, fully sealed design
The primary live components of the automatic ring main unit, namely the movable parts of the busbar and the high-voltage switch, are encapsulated in an epoxy resin casting. The ring main unit is fitted with a connecting sleeve complying with DIN 47636, which can be connected to the incoming and outgoing cables via fully insulated, fully shielded separable connectors (cable joints). The protection class of the main circuit reaches IP67, providing anti-condensation and short-term flood-proof performance.
Standard modular design
Comprising a load switch unit (C), a load switch + fuse combined electrical unit (F), a circuit breaker unit (V), a busbar segmented switch unit (VL), a metering unit (M), a busbar PT unit (PT), and the like, the different modules may be arbitrarily combined to form a ring network cabinet. The automatic ring main unit can connect various standard modules through dedicated busbar connectors to achieve a variety of unit combinations to maximize the satisfaction of complex and diverse power supply and distribution design solutions in various places in China.
Zero gas risk: no leakage, no gas monitoring required, meeting the mandatory requirements of the "Code for Fire Protection Design of Buildings" for crowded places. Long-life design: the gas tank is laser welded by a robot, and its service life is up to 30 years.
Perfect mechanical interlocking
The operation panel of the inflatable cabinet has a complete five-proof mechanical interlocking function. All interlocking functions have been configured internally. Please operate in the order of the operating instructions during operation. It is very convenient to use.
Flexible Expanded Design
The automatic ring main unit inflatable cabinet has a modular design, which can realize diversified unit combinations of various modules through dedicated busbar connectors, maximizing the need to meet the complex and diverse power distribution design solutions in various places.
| Project | Unit | XGNGZXD2-12C | XGNGZXD2-12/F | XGNGZXD2-12/V | |
| Rated Voltage | kV | 12 | 12 | 12 | |
| Rated Frequency | Hz | 50 | 50 | 50 | |
| Rated Current | A | 630 | Depend on Current Rating of the Fuse | 630 | |
| Rated Insulation Level | Rated Power-frequency Withstand Volatage (between Phases, to Earth) | kV | 42 | 42 | 42 |
| Rated Power-frequency Withstand Voltage (Across the Isolating Distance) | 48 | 48 | 48 | ||
| Rated Power-frequency Withstand Voltage (Control and Auxiliary Circuit) | 2 | 2 | 2 | ||
| Rated Lightning Impulse (between Phases, to Earth) | 75 | 75 | 75 | ||
| Rated Lightning Impulse (Across the Isolating Diatance) | 85 | 85 | 85 | ||
| Rated Short-time Making Current | kA | 50 | Limited by High Voltage Fuse | 50 | |
| Rated Short-time Breaking Current | kA | - | Limited by High Voltage Fuse | 20 | |
| Mechar Vcal Life | Load Switch/Circuit Breaker | Times | 10000 | 10000 | 10000 |
| Disconnector/Earthing Switch | 3000 | 3000 | 3000 | ||
| Resistance of Main Circuit | μΩ | ≤120 | - | ≤120 | |
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