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Product Description

 

33KV RMU Ring Main Unit

Descriptions
 

33KV Ring6 Ring Main Unit (RMU) is an advanced, modular switchgear system designed to manage and distribute electrical power with enhanced safety and efficiency in medium to high voltage networks. Optimized for 33KV applications, it is equipped with a range of modules, including switch disconnector (C-module), earthing switch (F-module), switch-fuse disconnector (v-module), downstream earthing switch, and a vacuum circuit-breaker, to ensure flexibility and reliability in operation.


Specifications

Feature	Specification (C-module)	Specification (F-module)	Specification (V-module)
Rated Voltage (KV)	36/40.5	36/40.5	36/40.5
Power Frequency Withstand Voltage (KV)	70/95	70/95	70/95
Lightning Impulse Withstand Voltage (KV)	170/185	170/185	170/185
Rated Normal Current (A)	630	-	200
Active Load (A)	630	-	200
Closed Loop (A)	630	-	200
Offload Cable Charging (A)	20/21	-	50 (Class C1)
Earth Fault (A)	60/63	-	-
Making Capacity (KA)	50/50	50/50	50/50
Short-time Current (1 sec) (KA)	16/16	16/16	1/1
Short-time Current (3 sec) (KA)	20/20	20/20	20/20
Internal Arc Classification (IAC) A FL, 1s (KA)	20/20	20/20	20/20

 

Product Features

High Voltage Operation: Engineered for rated voltages of 36/40.5 KV, suitable for a range of electrical distribution requirements.
Robust Insulation: Power frequency withstand voltage of 70/95 KV and a lightning impulse withstand voltage of 170/185 KV, providing superior insulation and safety.
Durable Construction: Withstand voltages across the disconnector are 80/110 KV for power frequency and 195/215 KV for lightning impulses, reflecting a strong build for enduring harsh conditions.
Versatile Current Management: Capable of handling rated normal currents of up to 630 A with comprehensive breaking capacities for active loads, closed loops, and cable charging.
 

 

Company Advantages

Customizable Configurations: Our RMU units can be customized to include various combinations of load break switches, circuit breakers, and earth switches, providing a tailored solution that meets the specific needs of each project.

Robust and Reliable: Constructed from high-quality materials, HOLDONE RMU units are designed to operate reliably under harsh conditions with a protection rating of IP65, ensuring durability and operational integrity.

Advanced Safety Features: Equipped with sophisticated safety mechanisms, including internal arc protection and fault interruption technology, our RMUs enhance the safety of network operations and maintenance personnel.

Efficient Operations: Designed with efficiency in mind, our RMUs support automated network management and are compatible with smart grid technologies, allowing for remote monitoring and control that improve operational responsiveness and reduce downtime.

Seamless Integration: Engineered to be versatile, our RMUs can be integrated into existing or new networks with minimal disruption, supporting configurations such as ring, radial, or network tie applications.