KYN28-12 vs HXGN-12 - Choosing the Right HV Switchgear for Your Package Substation

A field-oriented comparison of KYN28-12 (withdrawable metal-enclosed switchgear) and HXGN-12 (SF6 ring main unit) to help purchasers and engineers match the HV element to project duty and layout constraints.

How They Differ

KYN28-12 is indoor metal-enclosed central-mounted withdrawable switchgear, typically 12 kV, suited to applications needing frequent breaker withdrawal and higher breaking capacities (25/31.5/40 kA).

HXGN-12 is a box-type fixed SF6-insulated ring main unit, compact and fully enclosed, well suited to ring network nodes and space-constrained urban/industrial distribution.

Selection Essentials

Match the choice to duty: incomer/feeder with higher short-circuit and maintenance requirements leans toward KYN28-12; ring-network node with space priority leans toward HXGN-12.

Always verify rated voltage, rated current, breaking capacity, protection degree and applicable standards (GB/T 11022 / IEC 62271-200) against the project specification.