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fully enclosed and fully insulated inflatable cabinet,SRM6-12 specifications,Compact substations .jpg

China SRM6-12 Fully Insulated Gas-Insulated Ring Main Unit - Reliable Switchgear from Top Suppliers & Factory

Overview
The SRM6-12 Fully Insulated Gas-Insulated Ring Network Switchgear is a top-quality product manufactured by our China-based factory, adhering to GB standards with a design lifespan exceeding 30 years under indoor conditions (20℃). Independently developed and rigorously tested at the National High Voltage Electrical Test Center, this innovative switchgear is widely utilized in 10kV/6kV distribution systems and stands out as the preferred choice for urban and rural transformation and distribution systems.
Our switchgear features a modular unit design, enabling versatile combinations tailored to various applications. It consists of two primary categories: fixed units and expandable units, catering to the flexible usage requirements of compact switchgear in diverse substations.
Completely sealed within a stainless steel body, the SRM6-12 switchgear ensures that all live components and switches are protected from external environmental conditions, providing operational reliability and enhanced personal safety. Additionally, it is maintenance-free, making it a cost-effective solution. By opting for expandable busbars, users can achieve complete modularity, with all components being safely insulated and shielded to ensure reliability.
The SRM6-12 fully insulated gas-insulated ring network switchgear also offers automated solutions customized to meet customer needs, emphasizing intelligent switchgear concepts and reducing on-site installation and debugging workloads. Available in both non-expandable and expandable standard configurations, it boasts full modular and semi-modular combinability along with self-expandability, providing exceptional flexibility for various applications.
Trust in our China-based suppliers to deliver the SRM6-12 Fully Insulated Gas-Insulated Ring Network Switchgear that meets your specifications and ensures reliability for years to come.

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

SRM 6-12 Gas-Insulated Switchgear Dimensions

Frequently Asked Questions (FAQ)

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

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

What is the difference between the Unit Codes C and F?

Unit Code "C" represents a Standard Single Set Load Switch Unit, whereas Unit Code "F" refers to a Load Switch-Fuse Composite Apparatus Unit.

What are the standard electrical ratings for nominal voltage and frequency?

The SRM6-12 series operates at a nominal voltage of 12 kV and a standard rated frequency of 50 Hz.

What is the mechanical service life of the C Module?

The C Module (Compound Switch) has a rated machinery service life of 5,000 operations under standard operating conditions.

What is the maximum current rating for compatible fuses in the F Module?

The maximum current compatibility for fuses integrated within the F Module (Composite Apparatus) is 125 A.