Features
Our "LM" range of switchgear uses the primary insulation system that has been proven in service for more than 50 years.
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Features of "LM" switchgear
Primary Switching Devices
- Vacuum Circuit Breakers
- Contactors
- Load Break Switches
- Disconnectors
- Fuse-Switches
Busbar Arrangements
- Single Busbar Arrangement: Conventional system with one three-phase set of busbars through the switchboard
- Double Busbar Arrangement: Two sets of three-phase busbars,each in its own chamber, for additional operational flexibility
Busbar Configuration
- Mark I: Busbars in a straight line one above the other
- Epoxylite-filled: Especially for dusty environment conditions such as Mines
Busbar Joint Insulation
- Air insulated: For easy installation and inspection
- Mark II: Busbars in trefoil arrangement for higher ratings
Earthing Arrangement
- Standard: One Earthbar running through the switchboard for connection to the station earth.
- Frame Leakage: Two Earthbars running through the switchboard with one insulated from the metal frame
Enclosure Rating
- IP3X: default industrial specification
- IP4X: in sites that need greater environmental protection
- IP41: protection from dripping water as well
Earthing Method
- Transfer Earth: By moving the Circuit Breaker into different positions to earth the circuit (cable) or the busbars.
- Integral Earth: A dedicated Earthswitch is fitted to the panel to earth either the circuit (cable) or the busbars
Phase Live Indication
- Absent: Not required on the panel front
- CT Primary Screen: Indicating Lights on panel front operated by a push button
- Voltage Detector: For permanent indication through Indicating Lights on the panel front
Power Cables
- Entry from the bottom
- Entry from the top
- Single Core Cables
- Three Core Cables
- With Compression Glands or no Glands at all
Arc Fault Venting
- Operator protection from the front and sides only
- All around the switchboard protection