Ring Main Unit

Name: Ring Main Unit
Brand: Huawan New Energy Co. Ltd.
Availability: InStock

A ring main unit (RMU) is a factory assembled, metal enclosed set of switchgear used at the load connection points of a ring-type distribution network. It includes in one unit two switches that connect both sides of the load to the main conductors and a fusible switch or circuit breaker that tee-off to feed a distribution transformer medium voltage to low voltage (MV to LV).

RMU Ring Main Unit Price

Specifications and Parameters of Ring Main Unit

Parameter	Details/Specifications
Rated Voltage	12 kV / 24 kV / 36 kV
Rated Current	630 A ~ 2500 A
Protection Grade	IP31~IP68 (depending on the environment, suitable for outdoor or harsh environments)
Rated Frequency	50 Hz / 60 Hz
Rated Power	Customized according to requirements (e.g. 1000 kVA~10000 kVA)
Short-Circuit Breaking Capacity	12.5 kA/25 kA/31.5 kA (depending on the rated current and selected equipment)
Operating Mode	Manual operation/Electric operation/Automatic operation
Insulator	Gas insulated (SF6) or oil insulated (choose according to demand)
Operation Temperature	-25 °C~40 °C (extreme temperature version can be selected according to the environment)
Way of Working	Ring network working mode, suitable for dual circuit power supply or ring distribution system
Switch Type	Vacuum circuit breaker/SF6 gas circuit breaker/oil circuit breaker
Load Switch Type	On load switch/Off load switch
Current Transformer	Combination current transformer (optional)
Voltage Transformer	Combination voltage transformer (optional)
Protection Function	Overload protection, short circuit protection, grounding protection, leakage protection
External Dimensions	800mm x 1000mm x 1800mm ~ 2000mm x 2200mm x 1500mm
Material	Steel plate/stainless steel/aluminum alloy material (customized according to customer needs)
Control Mode	Automatic control/manual control/PLC control/SCADA remote monitoring
Environmental Adaptability	Suitable for outdoor or indoor environments, with corrosion-resistant, waterproof, and dustproof design
Load Switch Capacity	630 A/1250 A/2500 A (choose according to requirements)
Protection Function	Short circuit protection, grounding protection, overload protection, overcurrent protection, overvoltage protection
Electrical Interface	Direct cable access/plug-in cable interface (selected according to design and installation requirements)
External Communication Interface	Supports communication protocols such as Modbus, DNP3, IEC 61850, RS-485, etc. (optional)
Safety Performance	Compliant with ISO standards, with grounding protection and fire protection design
Cooling Method	About 500 kg~3000 kg (depending on specific configuration and power)
Installation Method	Ground installation, indoor installation, outdoor installation
Noise Level	≤ 60 dB
Seismic Grade	Grade 8 seismic design (suitable for use in earthquake prone areas)
Operating Mechanism	Electric or manual mechanical operating mechanism with reliable switch and isolation functions
Application Environment	Urban distribution network, industrial parks, power systems, commercial buildings, remote distribution stations
Safety Certification	CE, TÜV certification

Huawan provides a wide range of switchgear for sale. If you are in need, please feel free to contact us!

Features of Ring Main Unit

SF6-free design with 25kA/1s rating

Have Questions About Huawan Transformer and Switchgear? Get in Touch With Us Now!

E-mail:

sales@huawanpower.com

Tel:

+86-13866167476

Add:

Room 914-915, Block A, Azure Business Port, No. 188 Qianshan South Road, Shushan District, Hefei City, Anhui Province, China

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