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Fully Enclosed Common Box Type Inflatable Cabinet

SRM6-12 Fuly Enclosed Common Box Type inflatable Cabinet is a modular unit that can be combined for different purposes. itconsists of fixed units and expandable units, meeting the fiexible needs of compact switchgear in various substations.The 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 reliablity, 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-ike automation solution, introducingthe concept of intelligent switches and minimizing on-site installation and commissioning work.The $RM6-12 is available in non-expandable standard configuration and expandable standard configuration, offering 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 personnel
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	Parameters
Rated voltage		kV	24
Rated current		A	630/1250
Rated frequency		Hz	50
Power-frequency withstand voltage for 1 minute	Interphase and ground	kV	65
Power-frequency withstand voltage for 1 minute	Isolating fracture	kV	79
Lightning impulse withstand voltage	Interphase and ground	kV	125
Lightning impulse withstand voltage	Fracture	kV	145
Rated SF6 gas pressure (gauge pressure at ambient temperature 20)		MPa	0.04
SF6 annual leakage rate		%	≤0.05
Protection grade		SF6 Gas tank	1P67
Protection grade		Cabinet body	1P4X