Solid-sealed pole technology encapsulates the vacuum interrupter and related conductive parts entirely within epoxy resin using advanced APG (Automatic Pressure Gelation) casting. This creates a single, fully insulated pole unit that eliminates exposed live parts. The key benefits are: superior insulation performance even in humid, polluted, or high-altitude environments; elimination of creepage and flashover risks; improved partial discharge (PD) characteristics; and reduced maintenance requirements since there are no bare conductors to clean or inspect. XGN68-12 uses this technology for both the ZN10-12 VCB and FZN58-12 load switch, making it ideal for demanding environmental conditions.

Both are 12kV fixed-type metal-enclosed switchgear, but they differ in technology and design approach. XGN66-12 is a compact box-type switchgear with a more traditional vacuum breaker configuration and integrated disconnector/earthing switch — it's cost-effective and space-efficient. XGN68-12 is a newer prefabricated metal-clad design that features epoxy resin solid-sealed pole technology for superior insulation performance. It also uses a prefabricated modular approach with factory pre-wired and pre-tested functional units, enabling faster on-site installation. XGN68-12 typically has IP4X protection (metal-clad) compared to XGN66-12's IP3X/IP4X options. Choose XGN68-12 when you need better insulation for harsh environments, faster installation, or prefer the solid-sealed design approach. Choose XGN66-12 when you want a proven, economical solution with higher current ratings (up to 3150A vs 1250A).

XGN68-12 offers two switching device options. Choose the ZN10-12 vacuum circuit breaker (VCB) configuration when the panel needs to provide full short-circuit protection — for incoming feeders, transformer primaries, or any circuit requiring overcurrent and short-circuit tripping capability. The VCB can interrupt full fault current up to its rating (20kA or 25kA). Choose the FZN58-12 vacuum load switch configuration when the panel only needs to switch load current and provide isolation — for metering panels, PT panels, or as a disconnecting switch upstream of a fuse-protected transformer. Load switches are more economical but cannot interrupt short-circuit current; they rely on upstream protection or fuses for fault clearing. Both options use the same solid-sealed pole technology and fit within the same XGN68-12 enclosure. We can help you select the right configuration based on your single-line diagram.

Prefabricated switchgear means that each functional unit (busbar section, breaker compartment, cable section, control section) is pre-assembled, pre-wired, and factory-tested before shipment. Instead of receiving loose components that need to be assembled and wired on-site, you receive modular panels that simply need to be aligned, connected via busbars, and have cables terminated. The benefits include: significantly reduced on-site installation time (often 50-70% less than conventional assembly); higher quality and consistency since most work is done in a controlled factory environment; less on-site labor required; easier future expansion by adding prefabricated modules; and reduced risk of on-site wiring errors. XGN68-12's prefabricated design is particularly valuable for projects with tight schedules or limited on-site electrical labor.

Yes, XGN68-12 is well-suited for challenging environmental conditions. The epoxy resin solid-sealed pole technology provides a significant advantage in high-humidity environments because the vacuum interrupter and live parts are fully encapsulated — there are no bare conductive surfaces where condensation could cause flashover. The IP4X metal-clad enclosure also provides a barrier against dust and indirect contact. For high-altitude installations (above 1000m), insulation strength decreases with altitude, but the solid-sealed design maintains better insulation margins than air-insulated alternatives. For altitudes above 2000m, we can offer special insulation designs with increased creepage distances and additional insulation coordination. Let us know your site conditions and we'll configure the switchgear accordingly.

XGN68-12 supports a wide range of standard scheme configurations. VCB-based schemes include: incoming panel (breaker + disconnector), outgoing feeder panel (VCB + CT + protection), metering panel, PT (voltage transformer) panel, transformer feeder panel, and bus tie panel. Load switch based schemes include: load switch + fuse combination for transformer protection, load break switch for sectionalizing, and ring main configurations. Each scheme can be customized with different protection relays, metering options, and control configurations. We also support custom schemes — just provide your single-line diagram and we'll design a fully compliant XGN68-12 configuration. All panels are factory-assembled and tested before shipment.