Compact Switchgear Unit

Compact Switchgear Unit

Details
Rated Voltage: HV 10kV/35kV; LV 400V/690V
Rated Current: 630A/1250A/2000A
Short-Circuit Breaking Capacity: 25kA/31.5kA
Protection Level: IP44/IP54/IP65
Frequency: 50Hz/60Hz
Enclosure Type: Compact sealed metal cabinet
Control Mode: Local/Remote control
Category
Ring Main Unit
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Description
Technical Parameters

Compact Switchgear Unit

 

Product Introduction

Automatic Ring Main Unit

Compact switchgear unit is a space-saving and high performance power distribution unit suitable for limited installation environments without sacrificing reliability and safety. The key switching, protection and control functions of the unit are coupled within a rugged structure and layout, making it suitable for cities, commercial buildings, industrial buildings and renewable energy projects. In indoor or semi-outdoor environments, it can effectively control power allocation, efficiently remove the electrical faults, and be easily integrated into existing grids meeting project demands for space utilization and compactness, and long-term stability.

Product Design&Structure

 

The design of compact switchgear unit concentrates on the maximisation of space, and has excellent performance at the level of safety. Each component, from circuit breakers and protection devices to busbars and control modules, has been calculated and well-dramaged to make its overall housing much smaller than traditional switchgear and thus saves a lot of space. This small concept is easy to install and deploy in substations with very limited space, building basements or a large industrial site.

 

The unit shell is made from high-grade corrosion-resistant metal and has high mechanical protection and excellent insulation properties, which are well-conditioned and are more flexible in nature. The sealed structure is strictly compliant with the IP standard. The dust, moisture and external impurities are removed efficiently, ensuring continuous operating in indoor and semi-outdoor environments. The solid frame resists vibrations and small shocks and is structurally stable for high-volume industrial applications.

Modular Ring Main Unit

The interior layout is highly designed for clarity and practicality and uses separate compartments separated from the high and low voltage. The compressed connection is highly secure and less likely to be interfered and hazardous. The clean placement of the wiring within a dedicated channel helps to substantially reduce the length of the cable, while also reducing the chance of overheating or short circuits. The core parts are easy to repair and maintain, and daily inspection can be completed without any further disassembly.

 

The built-in design also makes this device easy to use and long-term reliable. The modular design makes the device flexible to adapt to changing power demand, and flexible to respond to a variety of power needs. The integrated heat dissipation element dissipates heat during continuous operation. The structure is fully complied with international standards, has high compatibility with existing grids, and can achieve continuous excellent performance for different applications.

Air insulated ring main unit

Application Scenarios

applications

Product Specifications

 

Project Unit Circuit Breaker Load Switch Load Switch - Fuse Combinations
Rated Voltage kV 12 12 12
Rated Frequency A 630/1250 630 125
Rated Current Hz 50 50 50
Rated Insulation Level 1 min Power Frequency Withstand Voltage (Interphase and Phase to Ground) kV 12 42 42
1 min Power Frequency Withstand Voltage (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 Breaking Current kA 20/258 - 31.5
Rated Short-time Making Current kA 50/63 50 80
Rated Short-time Withstand Current kA 20/258 20 -
Rated Duration of Short-circuit s 4 4 -
Rated Peak Withstand Current kA 50/63 50 -
Take-over Current/ Transfer Current A - - 3150
Rated Operating Sequence - 0-0.3s-C0-180S-C0
Rated Filling Pressure (Gauge Pressure When Temperature is 20℃) Mpa 0.02
Minimum Functional Pressure (Gauge Pressure When Temperature is 20℃) Mpa 0
Pressure Relief Device Release Pressure (Gauge Pressure When Temperature is 20℃) Mpa 0.16
Yearly Gas Leakage Rate - ≤0.01%
Mechanical Life Times 10000
Main Loop Resistance μΩ ≤150

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