Withdrawable Metal-Clad MV Switchgear - KYN Series

Start with system voltage: 40.5 kV means KYN61-40.5, 24 kV means KYN□-24, and 12 kV and below leaves KYN28A-12, KYN550-12 and YF-KYN450-12. Rated current and short-circuit level narrow it from there - a 4000 A main busbar points to KYN550-12, a 50 kA short-time withstand points to KYN28A-12. Where switchroom space is tight, KYN550-12 starts at 550 mm wide. Send the single-line diagram and the line-up can be confirmed to specific cabinet types.

Three things get a preliminary scheme out: the single-line diagram, system voltage and rated current, and the short-circuit capacity. For a quotation firm enough to contract against, add the circuit schedule and main connection arrangement, component brand preferences, protection and metering requirements, control supply and communication interfaces, installation environment, and the standards and document list for the target market.

Yes. The component platform is agreed in the technical agreement during project confirmation, and final types, ratings, lead time and document scope follow the confirmed component schedule. The point to check alongside it is the mounting interface - swapping breaker brands within the same cabinet type does not guarantee the same truck dimensions or secondary plug.

Top-in/top-out, bottom-in/bottom-out and mixed arrangements are all buildable. Direction follows the cabinet type, the cable termination form and the site cable routing, while inter-panel connection runs through the busbar bridge over the cabinet tops. Interface positions and reserved clearances are marked on the project drawings.

Yes, and this is where most ETENZ switchgear work sits. The switchgear is supplied as equipment; the MV switchgear E-House is supplied as a complete unit covering the enclosure, equipment layout, auxiliary systems and interface integration. When both sit in one project the delivery boundary between them is drawn once at contract stage.

Standard documentation travelling with the cabinets covers project approval drawings, component schedules, wiring documents and packing lists. Inspection records are issued to the scope agreed in the technical agreement; where witness testing or a specific report format is needed, raising it during quotation and technical clarification allows the test and witness dates to be scheduled.

A report only covers the configuration actually tested. Model, ratings, standard edition, manufacturing entity, place of manufacture and target market all have to line up - any one of them off and the report does not apply to your cabinet. Send the project requirements and the applicable documents can be selected; a company management-system certificate is not a substitute for product electrical performance evidence.

Both are 12 kV metal-clad withdrawable types. KYN28A-12 is the broader established family and takes a 16-50 kA short-time withstand, which suits ordinary incoming, feeder and bus-tie line-ups. KYN550-12 reaches 4000 A on the main busbar at 550-1000 mm cabinet width, which suits switchrooms where floor space is tight but main busbar current is high. Short-circuit level, cabinet footprint and the main connection arrangement decide it.