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Normal Pressure Sealed Fully Insulated Ring Main Unit

Normal Pressure Sealed Fully Insulated Ring Main Unit

BCQ-12
Normal pressure sealed fully insulated ring main unit, it adopts environmentally friendly gas dry air insulation (zero gauge pressure), vacuum arc extinguishing, fully enclosed structure, has strong environmental adaptability, small size, saves space, no SF6 gas, safe and reliable, is a modular design, with a perfect unity of fixed and flexible expansion, to meet the requirements of end users or network nodes, while meeting the requirements of various distribution switchgear, box-type substations, cable branch boxes, with compact structure, safety and reliability, long service life, maintenance-free, etc.
In modern power systems, it is crucial to choose the right switchgear. We recommend you a solution that combines reliability, efficiency and environmental protection - atmospheric pressure air insulated ring main unit.
Safe and reliable
The atmospheric pressure air insulated ring main unit adopts advanced air insulation technology to ensure the stable operation of the equipment in various environments. Its design has been rigorously tested and can maintain excellent performance under extreme conditions. Whether it is a high temperature or humid environment, this ring main unit can provide reliable power transmission and distribution.
High efficiency and energy saving
Compared with traditional equipment, the atmospheric pressure air insulated ring main unit has higher electrical strength and smaller volume. This means that it can take up less space at the same power output, thus saving valuable space resources. In addition, due to its good insulation performance, it reduces power loss and improves overall efficiency.
Environmentally friendly
The atmospheric pressure air insulated ring main unit uses non-toxic and harmless air as the insulating medium, completely avoiding the environmental problems caused by the use of harmful gases such as sulfur hexafluoride (SF6). This not only meets the current global requirements for environmental protection, but also reduces operating costs and maintenance difficulties.
Easy to maintain
The design of the ring main unit is simple and compact, which is easy to install and maintain. All key components are carefully designed for easy access and replacement. This not only reduces operating costs but also ensures long-term reliability. At the same time, our professional team is on call at any time to provide you with a full range of technical support and services.
Widely applicable
The atmospheric pressure air insulated ring main unit is suitable for a variety of application scenarios, including but not limited to urban power grids, industrial power distribution systems, commercial buildings, etc. Whether you are building a new project or upgrading an existing facility, this ring main unit can meet your needs.
If you are looking for a safe and efficient solution to manage your power system, please consider our atmospheric pressure air insulated ring main unit. We will provide you with professional technical support and services to help you achieve optimal performance.

Rated voltage

12kV

Rated current

630A

Rated frequency

50Hz

Rated short-circuit duration

4S

Rated short-circuit closing current

63kA

Protection level

IP4X, compartment IP2X, gas box IP67

Closing time

30-70ms

Opening time

20-50ms

Rated short-time withstand voltage dry test

42kV relative to ground, 48kV break

Rated lightning impulse withstand voltage

95kV relative to ground, 110kV break

Rated short-time withstand current

25kA

Rated peak withstand current

630A

Rated AC component of short-circuit breaking current

25kA

Operating temperature

Maximum temperature +70℃ Minimum temperature -40℃

Operating humidity

≤90%

Insulation resistance

500mΩ

Dielectric strength

DC2500V (leakage current 10mA)

Electrostatic discharge

Level 4

Lightning surge

Level 4

Fast pulse group

Level 4

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