● Function

It is used for transformer protection.

This unit usually equips with a three-position load switch with SF6 insulated performance (CKFL-S), a set of fuse and a set of auxiliary earthing switch. It has the double spring operating mechanism which with the function of automatic tripping for fuse fusing. Only when the load switch is at the position of earthing, operator can access cable compartment. Its position indicating device meets the standard of IEC60129A2 (1996) and relevant national standards. Operator can check whether the switch is in opening / earthing status from the watch window of low voltage compartment. Meanwhile, the operator can also check the cable connection and fault indicator from the watch window of the enclosure front door when device operates. (If selected this parts)

● Standard Feature

Upper part of the unit

---- three-position load switch

---- operating mechanism

---- enclosure for busbar compartment

---- integrated low voltage compartment

---- interlocking device

---- fuse tripping device with capacitive voltage indicator

---- busbar

Lower part of the unit

---- earthing switch

---- fuse base

---- enclosure for cable compartment

---- bottom plate for cable support brackets

● Optional Feature

---- integrated capacitive voltage indicator or inserting interface for portable capacitive voltage indicator

---- auxiliary contact for each position : 2pcs always opening + 2pcs always closing

---- electric operating mechanism

---- current transformer

---- voltage transformer

---- channel for cable controlling

---- channel for pressure releasing

Zhuhai Comking Electric Co., Ltd. was founded in 2006 in Zhuhai, China. With our European partners we are now recognized as a leading manufacturer in power transmission and distribution industry throughout China and Asia.

We are specialized in manufacturing of vacuum circuit breaker, solid insulated switchgear, SF6 gas insulated switchgear, ring main unit and load break switch for indoor and outdoor use.

With our continuous R&D in the fields of design, technology, quality and marketing, our products are recognized as a leader in our field.

Our strict quality control and full compliance with the quality assurance procedure with certification to ISO9001:2008, ISO14001:2004 and OHSAS18001 make us remain at the forefront of technology and quality.

Customer focus and meeting the demands of a changeable market make us to commit to a huge budget for products development which brings a combination of enhanced environmental values, technological advantages that enhance value and safety in the design.

Our core focus throughout the group remains on the development and growth of our employees and that we continue to recognize the value and commitment that they bring to the group throughout the world.