Unit type of heghest reliability
 - SEONDO's metal-enclosed switchgear in made up of incoming unit, feeder unit,nus tie unit,substation unit and lots more separately.Since all the units in type F2 and G metal clad switchgear are separated,spreading of accidents could be reduced. Further more,each unit is given thorough test and is delivered directly in complete form. This makes building installation simple and construct the facility in short time. 
 

 Safe cricuit breaker compartment of self-coupling type
 - SEONDO's vacuum circuit breaker is employing a dead front structure in which the operation mechanism is arranged on the front size while the main circuit conductive section is mounted at the rear. Operating safety is assured. 

 Interlocking system
 - the circuit breaker cannot be moved uless it is "open"
 - the breaker cannot be closed when it is between the conected and the disconected position.When inserting or withdrawing the breaker, then interlock lever should be lifted,allowing the breaker to be inserted or withdrawn. 

 facilitated maintenance/inspection
 - Voltage transformers and current transformers are of resing molded type. Voltage transformer and protective fuses are combined on a withdrawable carriage.
 - The vacuum circuit breaker can be safely handled with its operating mechansim section of which a control cicurit section located at the front and a main circuit section including a vacuum interrupter located at the rear.
 - The primary disconnecting device and the earthing contact employ a self-coupling system to ensure high reliability
 - Meters, relays, and other control devices can be mounted in the low voltage compartment separated from the circuit by a metal partition.