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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 Suppliers & Factory for 10kV/6kV Systems

Overview
Introducing the SRM6-12 Fully Insulated Gas-Insulated Ring Network Switchgear, designed in accordance with GB standards and boasting an impressive operational lifespan of over 30 years under indoor conditions (20℃). This innovative switchgear, independently developed by our company, has successfully passed rigorous type testing at the National High Voltage Electrical Test Center in China. As a trusted solution for 10kV/6kV distribution systems, it is the preferred choice for urban and rural transformation and distribution systems.
The SRM6-12 features a modular unit design, allowing for tailored combinations to suit a variety of applications. It includes two main categories: fixed units and expandable units, providing flexible usage options that meet the demands of compact switchgear in various substations.
This fully insulated switchgear operates as a completely sealed system, with all live components and switches securely housed within a robust stainless steel body. This design ensures the system is unaffected by external environmental conditions, thus guaranteeing operational reliability and enhanced personal safety. Additionally, it is maintenance-free, making it an ideal choice for customers looking to minimize upkeep. By using expandable busbars, users can achieve complete modularity, with reliable and safe insulation.
The SRM6-12 also offers automated solutions tailored to our customers' needs, promoting the concept of intelligent switchgear and significantly reducing on-site installation and debugging efforts. It comes in both non-expandable standard configurations and expandable standard configurations, delivering exceptional flexibility through its full modular and semi-modular combinability.
As a leading supplier in China, our factory is committed to providing high-quality products that align with international standards. Choose the SRM6-12 Fully Insulated Gas-Insulated Ring Network Switchgear for an efficient and reliable solution that ensures long-term performance.

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 (:A/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 (Ω)	≤ 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)

Q What does the model name "SRM6-12-C/630DL" represent?

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

Q What do the unit codes "C", "F", and "V" stand for in the performance indexes?

In the performance index, "C" stands for the Standard Single Set Load Switch Unit, "F" represents the Load Switch-Fuse Composite Apparatus Unit, and "V" represents the Circuit Breaker Unit.

Q What is the nominal voltage and rated frequency for the SRM6-12 modules?

All modules (including C, F, V, and CB modules) have a nominal voltage rating of 12 kV and operate at a rated frequency of 50 Hz.

Q What is the rated current for the F Module (Composite Apparatus)?

The rated current for the F Module is not fixed; it directly depends on the specific current rating of the compatible fuse used.

Q What is the mechanical service life of the C Module compared to the F Module?

The C Module (Compound Switch) has a mechanical service life of 5000 operations, whereas the F Module (Composite Apparatus) has a mechanical service life of 3000 operations.