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Fully Enclosed Common Box Type Inflatable Cabinet

SRM6-12 Fully Enclosed Common Box Type inflatable Cabinet is a modular unit that can be combined for different purposes. ltconsists of fixed units and expandable units, meeting the flexible needs of compact switchgear in various substationsThe SRM6-12 is a fuly sealed system with all live parts and switches enclosed in a stainless steel shel. The entire switchgearoperates independently of external environmental conditions, ensuring reliability, personal safety, and maintenance-free operationThe use of expandable busbars allows for any combination, achieving full modularity. The expandable busbars feature safeinsulation and shielding, ensuring high reliability and safety. The SRM6-12 also provides a TV-like automation solution, introducingthe concept of intelligent switches and minimizing on-site installation and commissioning work.The SRM6-12 is available in non-expandable standard configuration and expandable standard configuration, ofering exceptionalflexibility due to its full and semi-modular combinations and inherent expandability.The SRM6-12 is complies with GB standards and has a design life of over 30 years under indoor conditions (20°c).

SF6 gas is used as the arc extinguishing and insulating medium.
The switchgear features a fully sealed and insulated structure, with busbars, switches, and live parts completely enclosed in a stainless steel shell.
The compartments are filled with SF6 gas at 1.4 bar, achieving an IP67 protection level. The entire switch device remains unaffected by external environmental conditions, ensuring normal operation even in extreme situations, making the product maintenance-free for its lifetime.
The switchgear has a comprehensive "five-prevention"interlock device to prevent operational errors that could cause personnell and equipment failures. All switchgear includes a reliable safety pressure relief channel, ensuring the operator's personal safety even in extreme situations.
Two types of switchgear are available: fixed unit combination and expandable unit combination.
The switchgear typically has front-line entry, but side-line or side-expansion can be achieved based on different installation positions.
The compact size of the cabinet facilitates installation in confined spaces and adverse environmental conditions. The switchgear can be configured with electric, remote control, and detection devices based on user requirements.

Item	Unit	C Module	F Module	V Module		CB Module
Item	Unit	Load Break Switch	Combination Apparatus	Vacuum Switch	Isolating/Earthing Swtch	Vacuum Circuit Breaker	Isolating/Earthing Switch
Rated Voltage	KZ	12	12	12	12	12	12
Rated frequency	HZ	50	50	50	50	50	50
Power frequency withstand voltage (same/fracture)	kV	42/48	42/48	42/48	42/48	42/48	42/48
Aegis; Knock withstand voltage	kV	75/85	75/85	75/85	75/85	75/85	75/85
Rated current	A	630	Note"	630		1250/630	5000
Breaking capacity:						25
Rated closed-loop breaking current	A	630				5000
Rated cable charging breaking current	A	10
Rated short circuit closing current (peak)	A	50	80
Rated peak withstand current	kA	50
Rated short-time withstand current	kA/35	20
Rated short-circuit breaking current	kA		31.5	20		25
Rated transfer current	A		1700
Maximum current of fuse	A	-	125
Loop resistance	-N	≤300	≤600
Mechanical life	time	5000	3000	5000	2000	5000	5000