Customization 12kv Hxgn17-12 Fixed Switchgear Panel Box-Type Metal-Enclosed Ring Main Unit with Vacuum Load Break Switch

• Customization: Available
• Standard: GB, EN, China GB Code, JIS Code, TEMA, ASME
• Surface Treatment: Powder Coated
• Model NO.: HXGN17-12
• Energy Source: Electric Arc
• Material: Stainless Steel
• Transport Package: Box
• Trademark: CHANGJIANG
• Origin: China
• HS Code: 8537209000
• Production Capacity: 10000
• Package Size: 1200.00cm * 600.00cm * 2000.00cm
• Package Gross Weight: 100.000kg

Product Description

Product Overview
The HXGN17-12 box-type fixed AC metal-enclosed ring main unit (hereinafter referred to as "Ring Main Unit" or "RMU") is a new-generation high-voltage switchgear product designed and developed by adopting overseas advanced technologies combined with the power requirements of China. It is a factory-assembled, type-tested indoor power distribution equipment suitable for three-phase AC 50Hz power systems with rated voltage of 3.6~12kV.
This RMU is primarily used for receiving and distributing electrical energy, as well as controlling, protecting and monitoring circuits in three-phase AC ring networks, terminal distribution networks, and industrial power distribution equipment. It is also suitable for installation in box-type substations. The switchgear has been successfully applied in projects such as Shenzhen Gemdale Group, demonstrating its reliable performance in demanding commercial real estate environments.
The cabinet adopts a fully assembled modular structure using KS (8MF) section steel, featuring lightweight and aesthetic design, allowing flexible combination and unlimited expansion. The main switch can be equipped with FZN25-12 type vacuum load break switch or vacuum circuit breakers such as VD4-S upon request. The operating mechanism can be manual or electric, with remote control functionality available. The switchgear complies with GB3906 and IEC 62271-200 standards and has passed relevant type tests.

 

Key Advantages
Vacuum Load Break Switch / Circuit Breaker Configuration Flexibility
The main switch can be equipped with FZN25-12 vacuum load break switch (small size, maintenance-free, three-phase linkage structure with clear isolation gap), or vacuum circuit breakers such as VD4-S type as required, offering flexible configuration options to meet diverse application requirements.
Fully Assembled Modular Structure
The cabinet is assembled using KS (8MF) profile steel, featuring fully assembled modular construction, lightweight and aesthetic design. It allows flexible combination and unlimited expansion extension, making installation and configuration highly adaptable.
Complete "Five-Prevention" Mechanical Interlocking
Equipped with reliable mechanical interlocking device achieving full "five-prevention" functions: preventing moving of trolleys under load, preventing incorrect opening/closing of circuit breakers, preventing closing of earthing switch when live, preventing power transmission when earthing switch is in the closed position, and preventing accidental entry into live compartments. The load break switch adopts linkage protective insulation shutter, covering live contacts to ensure personnel safety.
Compact & Lightweight Design
The RMU features small component dimensions and low cabinet height (2000mm, with 1700mm Italian VEI design optional), saving valuable floor space in distribution rooms. The cabinet adopts front operation and maintenance, with wall-mounted installation available.
Dual Operation Modes & Remote Control
Both manual and electric operation modes are available with remote control functionality upon request. The clear and intuitive design ensures simple and direct operation, suitable for various application scenarios including automated distribution networks.
Observation Window for Easy Monitoring
The cabinet door is equipped with an observation window for easy monitoring of internal component working status without opening the cabinet, improving maintenance convenience and operational safety.
High Environmental Adaptability
Working temperature range: -25°C to +40°C; altitude up to 1000m (2000m optional); relative humidity: daily average ≤95%, monthly average ≤90%. Suitable for installation sites free from fire, explosive danger, chemical corrosion, or severe vibration.
Wide Application Scenarios
Suitable for ring network power supply and terminal power supply, widely used in factories and mines, residential districts, high-rise buildings, schools, parks and other places.

 

Technical Specifications

Parameter	Value
Rated Voltage	3.6 / 7.2 / 12 kV
Rated Frequency	50 Hz
Main Busbar Rated Current	630 A
Rated Current of Load Switch	630 A
Fuse Rated Current (Combination Unit)	100-125 A
Rated Short-time Withstand Current (4 sec)	20 kA
Rated Peak Withstand Current	50 kA
Rated Short-circuit Making Current (Peak)	50 kA
Rated Short-circuit Breaking Current	31.5 kA
Rated Transfer Current	1200-1750 A
Rated Closed-loop Breaking Current	630 A
Rated Active Load Breaking Current	630 A
Rated Cable Charging Breaking Current	25 A
1min Power Frequency Withstand Voltage (Phase-to-phase/Phase-to-earth)	42 kV (rms)
1min Power Frequency Withstand Voltage (Isolating distance)	48 kV (rms)
Lightning Impulse Withstand Voltage (Phase-to-phase/Phase-to-earth)	75 kV (peak)
Lightning Impulse Withstand Voltage (Isolating distance)	85 kV (peak)
Mechanical Life (Vacuum Load Switch / Earthing Switch)	10000 / 2000 cycles
Enclosure Protection Rating	IP2X-IP3X
Overall Dimensions (W×D×H)	650(850)×900×2000 mm (1700 mm Italian VEI design optional)
Altitude	≤1000 m (≤2000 m optional)
Ambient Temperature	-25°C to +40°C

 

The product meets "five-prevention" interlocking requirements and has passed type tests in compliance with national and international standards.

 

Application Scenarios
The HXGN17-12 RMU is widely used in three-phase AC 50Hz, 3.6-12kV power systems, especially suitable for ring network power supply and terminal power supply applications. Typical applications include:

• Commercial real estate: Residential community substations, high-rise building distribution rooms (e.g., Shenzhen Gemdale Group)
• Urban power grid transformation: City grid reconstruction and construction projects
• Industrial and mining enterprises: Power distribution for factories and mines
• Public facilities: Schools, parks, hospitals, stadiums
• Box-type substations: As a core component of compact substations
• Infrastructure projects: Municipal power distribution systems, airports, railway power supply

The RMU is particularly suitable for applications requiring compact footprint, flexible expansion, and cost-effective power distribution, making it the preferred choice for urban power grid reconstruction and construction projects. It is also suitable for frequent operation applications with single-busbar configuration.
Application Source: Based on industry standard application descriptions from multiple manufacturers, including Shenzhen Gemdale Group application as shown in the product image.