China SRM6-12 Fully Insulated Gas-Insulated Ring Main Unit - Reliable Supplier & Factory for 10kV/6kV Systems

Overview
Introducing the SRM6-12 Fully Insulated Gas-Insulated Ring Network Switchgear, a state-of-the-art solution designed in compliance with GB standards. Proudly developed by our factory in China, this advanced switchgear boasts a remarkable design lifespan of over 30 years under indoor conditions (20℃).
The SRM6-12 switchgear is specifically engineered for 10kV/6kV distribution systems, making it the ideal choice for a diverse range of urban and rural users seeking efficient transformation and distribution systems. With its modular unit design, it allows for tailored combinations to suit varying application needs, encompassing both fixed and expandable unit options for seamless integration in compact substations.
This fully insulated gas-insulated ring network switchgear features a completely sealed system, with live components and switches securely housed within a robust stainless steel structure. As a result, the SRM6-12 is impervious to external environmental factors, ensuring exceptional operational reliability and enhanced personal safety. Moreover, it is maintenance-free, providing you with peace of mind.
With the flexibility of selecting expandable busbars, the SRM6-12 allows for an array of combinations, ensuring full modularity. The insulated and shielded busbars guarantee reliability and safety at every turn. Additionally, this innovative switchgear offers automated solutions tailored to your specific needs, embodying the concept of intelligent switchgear while significantly reducing on-site installation and debugging efforts.
Available in both non-expandable and expandable standard configurations, the SRM6-12 switchgear offers unparalleled flexibility with its combination of full modular and semi-modular features, all while ensuring compliance with GB standards. Choose the SRM6-12 Fully Insulated Gas-Insulated Ring Network Switchgear from trusted suppliers in China for a new standard in electrical distribution solutions.

Product Detail

Model and Definitions

For example:

SRM6-12-C/630DL indicates a load switch cabinet with a nominal voltage of 12kV, rated current of 630A, right-side expansion, and left-side cable entry and exit method.

SRM6-12-CF/6301R signifies a combination unit formed by a load switch cabinet and a fuse combination cabinet. It has a bus voltage of 12kV and a bus current of 630A, with left-side expansion and right-side cable entry and exit method.

Performance Indexes

Unit Code	Definition	Unit Code	Definition
C	Standard Single Set Load Switch Unit	-	Busbar Top Insulator
F	Load Switch-Fuse Composite Apparatus Unit	SL	Bus Coupler Unit
V	Circuit Breaker Unit	M	Measurement Unit
D	Cable Entry Unit (Without Switch)	PT	PT UNIT
+	Busbar Side lnsulator	1K2(4)	Load Switch Unit with Double Insulator

Technical Specifications

Model	C Module	F Module	V Module		CB Module
Model	Compound Switch	Composite Apparatus	Vacuum Switch	Isolation/ Earthing Switch	Vacuum Breaker	Isolation/ Earthing Switch
Nominal Voltage (KV)	12	12	12	12	12	12
Rated Frequency (Hz)	50	50	50	50	50	50
Power Frequency Withstand Voltage (Interphase/Terminal) (KV)	42/48	42/48	42/48	42/48	42/48	42/48
Lighting lmpulse Withstand Voltage (kV)	75/85	75/85	75/85	75/85	75/85	75/85
Rated Currency (A)	630	Note ¹	630		1250/630
Rated Closed Loop Breaking Current (A)	630
Rated Cable Charge Breaking Current (A)	135/135
Rated Circuit Making Current (Peak) (A)	50	80
Rated Peak Withstand Current (kA)	50
Rated Short-time Withstand Current (kA/3s)	20
Rated Short-circuit Breaking Current (kA)		31.5	20		25
Rated Transfer Current (A)		1750
Maximum Current for Compatible Fuses (A)		125
Loop Resistance (μΩ)	≤ 300	≤ 600
Machinery Service Life (Times)	5000	3000	5000	2000	5000	5000

Note: 1) It depends on the current rating of the fuse.

SRM 6 - 1 2 Gas-Insulated Switchgear Structure and Dimensions

Frequently Asked Questions (FAQ)

What does the model name SRM6-12-C/630DL stand for?

It indicates a load switch cabinet with a nominal voltage of 12kV, a rated current of 630A, designed with right-side expansion, and featuring a left-side cable entry and exit configuration.

What are the different module codes in the SRM6-12 performance index?

The main module codes include C (Standard Single Set Load Switch Unit), F (Load Switch-Fuse Composite Apparatus Unit), V (Circuit Breaker Unit), and D (Cable Entry Unit without Switch).

What is the nominal voltage and frequency of the SRM6-12 switchgear?

The SRM6-12 Gas-Insulated Switchgear operates at a nominal voltage of 12 kV and a rated frequency of 50 Hz.

What is the mechanical service life of the C Module and V Module?

The Compound Switch in the C Module and the Vacuum Switch in the V Module both have a machinery service life of 5000 operations. The isolation/earthing switch within the V Module has a service life of 2000 operations.

How is the rated current for the F Module (Composite Apparatus) determined?

The rated current for the F Module (Load Switch-Fuse Composite Apparatus Unit) depends directly on the current rating of the compatible fuse installed.