Download the app
  • 36kV 40.5kV air insulated Ring Main Unit (RMU)
36kV 40.5kV air insulated Ring Main Unit (RMU)
discuss personally
Model
SM66-40.5
SM66-36
Basic info Product Detail Supplier
Basic info
Brand ROCKWILL
Model NO. 36kV 40.5kV air insulated Ring Main Unit (RMU)
Rated voltage 40.5kV
Rated normal current 630/800A
Rated frequency 50/60Hz
Series SM66
Product Detail

Description ：

SM66 unit type SF6 ring net cabinet with SF6 load switch as main switch, for whole cabinet is suitable for electric distribution automation and compact also expandable metal close switchgear. It characters in its simple structure, flexible operation, reliable interlocking and convenient installation etc.which can provide the satisfactory technical projects both for different application occasions and users. With the adoption of sensor technology and the protection relay up to date, plus the advanced technology and flexible assembly project, SM66 unit type SF6 ring net cabinet can completely meet the requirement of continuously variable market.

Main function :

  • Good Insulation Performance；

  • Strong Arc Extinguishing Ability；

  • Excellent safety performance ；

  • Flexible and Reliable Operation；

  • Compact Structure and Modular Design；

  • High Degree of Intelligence.

Technology parameters:

36kV 40.5kV air insulated Ring Main Unit RMU2.png

Outline dimension drawing:

36kV 40.5kV air insulated Ring Main Unit RMU (1).png

Fixing of units：

36kV 40.5kV air insulated Ring Main Unit RMU (2).png

36kV 40.5kV air insulated Ring Main Unit RMU (3).png

What is the purpose of a ring main unit RMU?

A:Ring main unit (RMU) is used to distribute electrical power in a medium - voltage distribution network. It allows for sectionalizing the network, isolating faults, and enabling power transfer between different sections of the ring - shaped power network, ensuring reliable power supply.

What does the RMU stand for?

A：RMU stands for Ring Main Unit. It is a type of electrical switchgear used in medium-voltage electrical distribution systems, typically for distributing power in a ring circuit configuration.




Know your supplier
ROCKWILL
Rockwill Electric Group Global Manufacturer of High voltage and medium-voltage power equipment and smart grid solutions. Headquartered in Wenzhou, China. Serving 100+ countries with quality, innovation, and trust. What We Offer: • HV-MV switchgear (VCB, SF₆ circuit breakers, RMU, GIS) • Distribution transformers and substations • Smart grid and monitoring systems • Solar, wind, EV charging, and energy storage solutions • EPC turnkey power projects Certified: ISO 9001 / ISO 14001 / ISO 45001
Main Categories
High voltage
Business Type
Design/Manufacture/Sales
Highest Annual Export (USD)
$150,000,000
Professional Experience
16 years
Workplace
108000m²m²
占位
占位
Documents
Public.
SM66 type 36kV 40.5kV air insulated Ring Main Unit (RMU)
Manual English
Consulting
Related Products
More
Related Knowledges
More
Operational Analysis of Prefabricated Enclosure Substations in Extreme Cold Climate Applications
Operational Analysis of Prefabricated Enclosure Substations in Extreme Cold Climate Applications
Under global climate diversity, alpine power construction faces technical and environmental challenges. Extreme climates, complex geology, and long - term low winter temperatures, along with ice, snow, and storms, strain electrical equipment stability and power facility construction (schedule, cost, maintenance). Traditional on - site substations, with long construction and poor adaptability, can’t meet alpine regions’ fast, stable power needs.Prefabricated cabin substations, as modu
Echo
06/13/2025
Implementation of Precast Foundations for Ring-Main Unit Compact Substations in Grid Modernization Initiatives
Implementation of Precast Foundations for Ring-Main Unit Compact Substations in Grid Modernization Initiatives
Compact substation boxes, with advantages like safe operation, high reliability, and easy maintenance, are used in urban grid construction/renovation. Structurally divided into American - style (high - cost, noisy, low - efficiency, gradually phased out) and European - style (large - sized but more advantages, still popular).To address their pros/cons, ring - network prefabricated ones were developed.I. Basic Materials for Prefabricated Compact Substation BoxesMaterials need hardness, strength,
Echo
06/13/2025
The design of the three-purpose grounding transformer
The design of the three-purpose grounding transformer
Underground Power Cable Transmission LinesDirect - buried power cable lines have large ground - distributed capacitance, causing high single - phase - to - ground short - circuit capacitive current. For 10 kV lines, if this current exceeds 10 A, arcs hardly self - extinguish, risking arc overvoltage and endangering line equipment. Arc extinction is thus necessary. With a Dyn - connected main transformer, an arc - suppression coil on the secondary neutral point suffices. For Yd - connected ones,
Dyson
06/12/2025
Failure Analysis and Design Optimization of Conventional Grounding Transformers
Failure Analysis and Design Optimization of Conventional Grounding Transformers
I. Core Cause of Damage: Electrodynamic Impact (Complying with GB/T 1094.5 / IEC 60076-5)The direct cause of high-voltage winding end collapse is the instantaneous electrodynamic impact induced by short-circuit current. When a single-phase grounding fault occurs in the system (such as lightning overvoltage, insulation breakdown, etc.), the grounding transformer, as the fault current path, withstands high-amplitude and steep-rise-rate short-circuit currents. According to Ampère's force law
Felix Spark
06/12/2025
Analysis of Grounding Transformer Operational Behavior Under System Single-Phase-to-Ground Fault Conditions
Analysis of Grounding Transformer Operational Behavior Under System Single-Phase-to-Ground Fault Conditions
1 Theoretical AnalysisIn distribution networks, grounding transformers serve two key roles: powering low - voltage loads and connecting arc - suppression coils at neutrals for grounding protection. Grounding faults, the most common distribution network fault, heavily impact transformers’ operating characteristics, causing sharp changes in electromagnetic parameters and status.To study transformers’ dynamic behaviors under single - phase grounding faults, build this model: Assume a tr
Felix Spark
06/12/2025
Design Calculations for Neutral Grounding Schemes and Grounding Transformer Sizing in Utility-Scale Solar PV Plants
Design Calculations for Neutral Grounding Schemes and Grounding Transformer Sizing in Utility-Scale Solar PV Plants
1 Classification of Neutral Grounding Methods for Solar Photovoltaic Power StationsInfluenced by differences in voltage levels and grid structures across regions, the neutral grounding methods of power systems are mainly categorized into non-effective grounding and effective grounding. Non-effective grounding includes neutral grounding via arc suppression coils and neutral ungrounded systems, while effective grounding comprises neutral solid grounding and neutral grounding via resistors. The sel
Dyson
06/12/2025
×
Inquiry
Download
Experts Electrical is dedicated to serving the personnel in the global power industry.
Join Experts Electrical, not only can you discover power equipment and power knowledge, but also canhnd like - minded friends!
App Store App Store App Store App Store App Store App Store App Store App Store
App Store
商品视频播放