LWX65-12 Solid insulated ring network cabinet
Brand: Henan Mingkong
Model: LWX65-12
Product Type: 12kV Solid Insulated Ring Main Unit (RMU)
Rated Voltage: 12kV
Core Feature: Fully sealed solid-insulated design, APG epoxy encapsulation, modular V/C/F functional units
Key Advantage: Maintenance-free operation, IP67 gas chamber protection, compact footprint for space-constrained substations
Application: Urban distribution networks, renewable energy projects, industrial parks, coastal and high-altitude environments
Conditions of Use: Altitude ≤ 5000m, ambient temperature -45°C to +65°C
Introduction
A: Product Overview
The LWX65-12 Solid Insulated Ring Main Unit is a high-performance 12kV compact switchgear developed for modern power distribution demands, widely adopted in urban power grids, industrial parks, commercial buildings and new energy power generation projects. Adopting advanced fully sealed solid insulation structure and APG pouring technology, this ring main unit integrates primary conductive parts inside epoxy resin, completely isolating internal components from external humid, dusty and corrosive environment, greatly improving overall insulation performance and operational stability.
Different from traditional air-insulated and SF6 gas-insulated cabinet types, LWX65-12 features small overall size, ultra-compact installation space and flexible modular combination design. It can freely match load switch unit, circuit breaker unit and fuse combination unit, supporting multiple wiring schemes such as incoming line, outgoing line and ring network power supply, which can perfectly meet the layout requirements of various limited-space distribution stations.
The equipment is equipped with a standard five-proof interlock protection structure, effectively preventing misoperation such as live opening and closing, grounding closing and live grounding, ensuring the safety of operation and maintenance personnel. It adopts high-reliability integrated operating mechanism, with fewer transmission parts, stable mechanical performance and long service life, and supports manual and electric operation modes to adapt to different automatic power distribution system needs.
Suitable for long-term stable operation under complex working conditions such as high altitude, coastal humidity and severe pollution, LWX65-12 realizes truly maintenance-free daily operation, reduces later maintenance cost and workload, and is an ideal preferred solution for medium voltage indoor and outdoor compact power distribution engineering projects.
B: Model meaning
According to the functional units in the system, they are classified into: the incoming cabinet, the outlet cabinet, the femalecabinet, the metering cabinet, the PT cabinet, the lifting cabinet, etc., which are represented by the wiring scheme number,According to the main switch component type: load switch cabinet, load switch-fuse combination electrical cabinet, circuitbreaker cabinet and isolation switch cabinet, etc, respectively.F(fuse combination),V(circuit breaker,C(oad Switch) and so on.
C: Conditions of Use
- The altitude does not exceed 5000m;
- Ambient temperature:-45°C-+65°C;daily average is not greater than+45°C;
- Relative humidity:the daily average is not more than 95%,and the monthly average is not more than 90%;
- An environment that is not subject to obvious pollution such as corrosive or flammable gases;
- No fire,explosion hazard,no frequent and severe vibration;
- Note:When the use of different environmental conditions or other special requirements,the manufacturer can benegotiated to provide products under special conditions of use;
D: Technical parameters
The LWX65-12 Solid Insulated Ring Main Unit delivers reliable 12kV performance across V, C, and F units. With rated currents up to 1250A and short-circuit breaking capacity up to 31.5kA, it meets strict dielectric strength requirements (42/48kV power frequency, 75/85kV lightning impulse). High mechanical endurance (up to 10,000 operations) and low partial discharge (≤20PC) ensure long-term stability. IP4X/IP67 protection provides safe, maintenance-free operation in diverse environments.
E: Recommended Further Reading
1. XGN17-40-5 Box-Type Fixed AC Metal-Enclosed Switchgear
For high-voltage applications up to 40.5kV, the XGN17-40.5 Box-Type Fixed AC Metal-Enclosed Switchgear features a compact, robust design ideal for fixed installation in industrial and commercial power distribution projects. Built with high-quality materials and proven manufacturing processes, it delivers reliable performance and long-term stability, making it a trusted solution for substations, factories, and urban power grid systems.
2. KYN28A-24 Armored Removable AC Metal-Enclosed Switchgear
The 24kV-rated KYN28A-24 Armored Removable AC Metal-Enclosed Switchgear adopts a professional draw-out structure with simple structure and convenient maintenance. It operates stably and safely, and is widely applied in power grid renovation, urban power distribution, industrial parks and commercial supporting engineering projects.
