ENSIS — modular solid insulated secondary distribution switchgear for network automation
ENSIS is modular secondary distribution switchgear with HCEP solid insulation, vacuum interrupters and a magnetic actuator for automated cable networks. Withstand current 12.5 kA, automatic transfer in one cycle, footprint 52 % smaller than metal-clad switchgear.
- Panels
- circuit breaker (CB), load break switch (SW), metering (MOF), VT (PT)
- Short-time withstand current
- 12.5 kA
- Making capacity
- 32.5 kA
- Drive
- magnetic actuator, vacuum interrupters
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
ENSIS (Solid Insulated Secondary Switchgear) is designed as modular secondary distribution switchgear for distribution automation systems. It is combined from circuit breaker (CB), load break switch (SW), metering (MOF), voltage transformer (PT) panels and others, so the distribution network scheme is easy to change.
The circuit breaker drive is built on a permanent magnet actuator that works without maintenance. The arc is extinguished by vacuum interrupters embedded in epoxy bushings, and neither oil nor gas is used. The main parts of the switching device are fully cast in hydrophobic cycloaliphatic epoxy resin HCEP. There are no exposed conductors as in conventional metal-clad switchgear, so the hazard for personnel is sharply lower and internal short circuits are excluded. Without SF6 there are no periodic leak checks or refilling. The main switch and the earthing switch are separate and interlocked.
The automatic transfer function (ALTS) switches the load within one cycle when the main source is lost, and the supply interruption is reduced to a minimum. The controller monitors voltage loss and restoration. ENSIS is supplied with microprocessor control that measures, monitors and records parameters and has a communication channel. The magnetic actuator and the vacuum interrupters need no routine maintenance, so inspections mainly check the interlocks and the controller log.
Short-time withstand current is 12.5 kA, making capacity 32.5 kA. The control circuits are powered from 90–260 V AC or 110 V DC, with a test voltage of 2 kV and an impulse of 5 kV. The maximum number of operations is 10,000. The footprint is 52 % smaller than for metal-clad switchgear. Operating conditions are −30…+40 °C, altitude up to 1000 m, humidity 90–95 %. The Korean catalog gives a rated voltage of the 25.8 kV class for substation switchgear, so it should be clarified when ordering.
KERI carried out the type tests to IEC 62271-1, 62271-100, 102, 103, 201 and 200. ENSIS is installed at secondary distribution substations of cable networks, in automated sectionalizing and transfer points, and at industrial and commercial sites where compactness, safe operational switching and the absence of gas handling are required.
Technical specifications
| Panels | circuit breaker (CB), load break switch (SW), metering (MOF), VT (PT) |
|---|---|
| Short-time withstand current | 12.5 kA |
| Making capacity | 32.5 kA |
| Drive | magnetic actuator, vacuum interrupters |
| Insulation | HCEP, fully cast main parts |
| Service life | 10,000 operations |
| Automatic transfer | automatic transfer to backup in 1 cycle |
| Dimensions | 52 % smaller footprint than metal-clad switchgear |
| Temperature | −30…+40 °C, up to 1000 m, humidity 90–95 % |
| Standards | IEC 62271-1, -100, -102, -103, -200, -201 |
Request a price and lead time
ENSIS — modular solid insulated secondary distribution switchgear for network automation. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8537 20 91 00 |
|---|---|
| HS, 6 digits | 8537 20 |
| CN (EU) | 8537 20 91 |
| HTSUS (USA) | 8537 20 00 00 |
| China customs tariff | 8537 20 90 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
Which panels does ENSIS consist of?
The switchgear is combined from circuit breaker, load break switch, MOF metering and PT voltage transformer panels. Breaker service life is 10,000 operations, withstand current 12.5 kA.
How fast does ENSIS transfer the load to the backup source?
The ALTS function transfers the load within 1 cycle after the main source is lost. The controller monitors voltage loss and restoration.
In which conditions does ENSIS work?
Temperature range is −30…+40 °C, altitude up to 1000 m, humidity 90–95 %. The control circuits are powered from 90–260 V AC or 110 V DC.
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