Switchgear, 12 to 40.5 kV
Cubicle GIS, vacuum circuit breakers, disconnectors and operating mechanisms — type-tested, sealed for life, built for urban substations, wind, solar and heavy industry.
ZN-40.5 gas tank
Next-generation cubicle GIS tank: maintenance-free, compact, modular, with SF6 or environmental-gas insulation. GB / IEC type-tested for urban substations, wind power and heavy industry.
| Rated voltage | up to 40.5 kV |
| Rated frequency | 50 / 60 Hz |
| Power-freq. withstand (Ph-Ph / Ph-Gnd) | 95 / 118 kV |
| Lightning impulse (Ph-Ph / Ph-Gnd) | 185 / 215 kV |
| Rated current | 1250 / 2500 / 3150 A |
| Short-time withstand | 31.5 kA / 4 s · 40 kA / 4 s |
| Insulation medium | SF6 / environmental gas |
| Annual leakage rate | ≤ 0.01% |
| IAC rating | AFLR / 1 s |
| Enclosure protection | IP67 |
| Rated gas pressure (20°C) | 0.03 MPa |
Maintenance-free
Helium leak-tested hermetic seal.
Lead time
Complete gas tank in 6 weeks.
Metal-enclosed, compact, field-ready.
ZC-CGIS 12
Compact distribution switchgear for dense urban networks.
| Current | 630 – 4000 A |
| Withstand | 31.5 kA / 3 s |
ZC-CGIS 24
The volume workhorse — type-tested and field-ready.
| Current | 630 – 2500 A |
| Withstand | 25 kA / 3 s |
Incomer / feeder
Standard feeder units configured to your single-line.
Bus-bushing & PT/SA
Metering, protection and surge-arrester combinations.
Catalog or custom
Standardized modules or engineered-to-order layouts.
VCB, mechanism, disconnector.
Full range 12 – 40.5 kV. Tested to M2 mechanical and E2 electrical endurance. The run-in lab has 13 positions with sound-absorption protection.
Vacuum circuit breakers
Red-frame pole assemblies built and aligned in-house.
13-position run-in lab
M2 endurance and characteristic tests before the cubicle is closed.
Operating mechanisms
Motor-charged mechanisms, 24 V class, assembled and inspected on the pallet.
Disconnectors
Three-phase disconnect / earth assemblies with copper links.
Interlock and trip
Voltage-trip units, auxiliary switches and mechanical interlocks.
Load breaker
Three-position load-break switch for cubicle GIS incoming and ring feeders.
VCB and mechanism assembly — 3 weeks. Complete gas tank — 6 weeks.