E-CABINEL — SF6-free 24/36 kV secondary distribution switchgear with dry air insulation
E-CABINEL is secondary distribution switchgear for 24 and 36 kV without SF6, in which purified dry air at a pressure of 0.2 bar serves as the insulating medium and switching is done by vacuum interrupters. The rated current is 630 A and the short-time withstand current is 20 kA for 3 s. The cells suit urban and rural networks, underground substations, data centres, renewable plants and charging infrastructure.
- Rated voltage
- 24 and 36 kV
- Rated current
- 630 A
- Insulation
- purified dry air at 0.2 bar + solid insulation; vacuum interruption
- Short-time withstand
- 20 kA, 3 s; peak 50 kA
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
E-CABINEL is conceived as a direct replacement for SF6-insulated CABINEL cells. With the same dimensions and level of safety, any traditional CABINEL cell can be replaced by an E-CABINEL cell with the same characteristics and functions, while the global warming potential of the substation is reduced. The connection dimensions match CABINEL, and the difference in height is compensated by bases.
Why air. In the view of the manufacturer, the best gas for preventing emissions is air itself. Clean air does not allow uncontrolled influence of pressure, density and humidity fluctuations on the behaviour of solid insulation. Low pressure reduces the risk of leaks and explosion and rules out contamination of the insulation. The equipment falls outside the category of pressure vessels, so frequent maintenance and periodic inspections are not needed. Even with an abnormal gas leak the cell continues to operate, whereas schemes with compressed air or other gases would require immediate disconnection.
Characteristics for 24 and 36 kV. The rated current is 630 A, the lightning impulse 125 kV, the one-minute test voltage 50 / 70 kV, and the frequency 50/60 Hz. The short-time withstand current is 20 kA for 3 s, the peak current 50 kA and the making capacity 50 kA. Breaking covers mainly active load 630 A, off-load cables 25 A, and earth fault 50 A and 16 A. The electrical class is E3 and the mechanical endurance 5000 operations. Internal arc resistance is A FL 20 kA, the degree of protection IP2X, IK08, and the tank IP67. The cells have been tested for 24 hours of operation under water. Internal arc resistance has been verified to IEC 62271-200. If the ambient temperature is outside the range from −15 to +55 °C, the conditions are agreed with the manufacturer separately.
The design is modular (CML, CMPF, CMPAS, CMR, CMM) and compact, extendable on one or both sides or non-extendable. In 2026 a dry-air-insulated E-CABINEL vacuum circuit breaker was presented at Hannover Messe. The operating mechanism and vacuum interrupter are the same as in the SF6 version, and the options include self-powered relays, toroidal CTs, voltage sensors and motor drives.
Technical specifications
| Rated voltage | 24 and 36 kV |
|---|---|
| Rated current | 630 A |
| Insulation | purified dry air at 0.2 bar + solid insulation; vacuum interruption |
| Short-time withstand | 20 kA, 3 s; peak 50 kA |
| Breaking capacity | 630 A; cables 25 A; earth fault 50 A |
| Insulation level | 125 kV impulse; 50/70 kV |
| IAC | A FL 20 kA |
| Classes | E3; 5000 mech. operations |
| Degree of protection | IP2X, IK08; tank IP67 |
| Standards | IEC 62271-200, -103, -105, -102, -100, EN 50181, IEC 60282-1 |
Request a price and lead time
E-CABINEL — SF6-free 24/36 kV secondary distribution switchgear with dry air insulation. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
What medium insulates E-CABINEL cells and is pressure monitoring needed as for vessels?
They are insulated by purified dry air at a pressure of 0.2 bar and solid insulation, with vacuum switching. Because of the low pressure the equipment is not a pressure vessel, so frequent inspections are not needed.
What short-circuit currents characterise the cells?
The short-time withstand current is 20 kA for 3 s, the peak current 50 kA and the making capacity 50 kA. Internal arc resistance is A FL 20 kA.
Can E-CABINEL replace an SF6 CABINEL cell?
Yes, any traditional CABINEL cell can be replaced by E-CABINEL with the same characteristics and functions. The connection dimensions match, and the difference in height is levelled with bases.
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