Solid Insulated Switchgear for railway application, is a product developed by ENTEC as
the next generation primary AC switchgear in railway industry.
Due to frequent but mostly temporary short circuits in the traction system, the
switchgear is essential to railway safety.
ENTEC’s SIS has its main circuit and bus bar epoxy molded as an environmentally
friendly product to respond to Anti-Global-Warming-Campaign since old SF6 gas
insulated products continue to be a main reason for climate change [Kyoto Protocol].
Compared to Air Insulated products, ENTEC's SIS has no exposed conductor, eliminating
the possibility of electrocution hazard, making ENTEC’s SIS the safest product available.
In addition, this product has been tested and verified according to international
standards at international authorized testing laboratories.
Compact size, light weight and maintenance free design, with its quality tested, all are
now making SIS ready to replace SF6 or environment friendly GIS and C-GIS in the
coming generation.

Main Features

-Safety

No exposed conductor, no electrical shocks
Gasless, no concerns of overpressure or explosion
Separated phase molding, inter-phase short circuit proof
Mechanically interlocked main circuit (CB, DS, ES) mold as
one body, simplifying external connection, improving safety
V0 grade fire-retardant material as insulation medium

-Eco-Friendly

No global warming material (as SF6 is a gas with warming
potential of 23900 times greater than CO2's)

-Reliability

P.M.A. (Permanent Magnetic Actuator) mechanism,
10,000 times of operations guaranteed
Featured with watchdog, real time monitoring
(option : PD monitoring)
Ease of accessibility to all functional groups
High resistance to environmental influence
(No aging deterioration)

- Convenience

Extensible structure (convenient installation of future panels)
High mobility (option : wheels at the bottom for installation)
Optimized space utilization (30% installation area of MCSG's)
Withdrawable type available

-Withdrawable Type

Withdrawable VCB part for even more convenient
maintenance
Easy for moving, repairing and replacement
Convenient for substation power-up or extension project

-Maintenance Free

Solid Insulation : Maintenance free main circuit (CB, DS, ES)
Simplified operating mechanism P.M.A.(Permanent Magnetic Actuator) :
10% of the components compared to spring charge mechanism
Trouble free DS, ES structure for reliable operation