Panel types for each duty
| Series | Type | Voltage | Typical duty |
|---|
| KYN28-12 | Metal-clad, withdrawable | 12 kV | Incoming, feeder and transformer panels in substations |
| KYN61-40.5 | Metal-clad, withdrawable | 40.5 kV | Incoming and feeder panels in 35 kV substations |
| HXGN□-12 | Ring main unit | 12 kV | Compact MV distribution, transformer protection |
| HXGW-12 | Outdoor unit | 12 kV | Outdoor distribution points and pole-mounted installations |
| TBBZ-12 | Capacitor bank | 12 kV | Reactive power compensation at medium voltage |
| MVNEX-12 | Metal-clad, withdrawable | 12 kV | Projects specified around the MVNEX platform |
Ratings shown are typical configurations. Final current, short-circuit and protection ratings are confirmed on the data sheet for the ordered variant.
Built around the transformer it feeds
Transformer feeders are configured with a load break switch and fuse combination up to about 800 kVA, or with a vacuum circuit breaker and relays above that, so the protection matches the transformer rating rather than a standard panel.
Tested before dispatch
Every panel is routine tested — main circuit resistance, insulation, power frequency withstand and interlock function — before packing, with the test record supplied with the panel.
Standards
Panels are designed and manufactured to GB 3906 and IEC 62271-200 for metal-enclosed AC switchgear, with component standards applied to the devices inside.
1. Fix the system data
Rated voltage, rated current of the busbar, short-time withstand current and peak withstand current, plus the earthing system. These four values decide the panel family before any layout is drawn.
2. Choose the panel type per function
- Incoming: metal-clad withdrawable panel with a vacuum circuit breaker and protective relay.
- Transformer feeder up to about 800 kVA: load break switch with fuse, in a ring main or metal-clad panel.
- Transformer feeder above 800 kVA: vacuum circuit breaker with overcurrent and earth fault protection.
- Outdoor point: HXGW outdoor unit instead of a building.
3. Define the protection and automation scope
State whether relays, metering, fault passage indication, remote signalling or full substation automation are required, and which protocol the utility or plant uses.
4. Agree the interface to the transformer and the LV side
Cable or busbar connection, cable size and direction, and whether the HV panel is supplied inside a substation enclosure together with the transformer and the LV panel.
What to send for a quotation
- Single-line diagram and panel list with functions
- System voltage, busbar current, short-circuit level
- Transformer rating and impedance, if relevant
- Protection, metering and communication requirements
- Indoor or outdoor, enclosure type, cable entry direction
- Standards and any utility approval requirements
