top of page



Air insulated switchgear panels (AIS), with Megawin Electric make vacuum circuit breakers (VCB)


·Both the panels and breakers are designed, type tested & complying to latest IEC standards & GCC specifications

Specific features


  • Very compact. Low civil cost. User friendly

  • Separate compartments, with metallic partition, for busbar, cable, circuit breaker, low voltage and VT as applicable

  • Eco friendly as arc interruption happens in vacuum and SF6 fee

  • VCBs are either on floor rolling trolley or in a mid-mounted cassette

  • Light weight Vacuum Breaker trolleys designed for easy & safe handling

  • Motorized spring charged mechanism, with manual option

  • Total safety to operating personnel as all operations, including rack-in and rack-out of VCB Trolley, with front doors in closed and securely held condition

  • Provided with all mandatory safety interlocks and padlocks

  • Ready to connect to any remote control & monitoring system and to any SCADA system

  • Sufficient head room in the cable compartment i.e, more than 650mm, for the connection & bending radius of power cables

  • Suitable for single or three core cables, with a maximum of 12 per phase

  • Mechanical push to TRIP and CLOSE buttons, with front door closed condition

  • Circuit breaker and VT compartments have interlocked access

  • Busbar and cable compartments have tool based access

  • Busbars are made of electrolytic copper

  • Busbar compartment is segregated for each panel for not letting any arc fault to adjacent panels

  • In a line-up arrangement, Internal Arc venting duct is formed to direct arc to outside the substation

  • Complete with CTs, PTs, Relays, Meters, Control & Indication devices fully wired up and ready to use



Transformer Switching

Capacitor Bank Switching

Motor Switching

Feeder Switching

Furnace Switching

Market Segments


Utilities (primary and secondary




Large Buildings

Oil & Gas

Normal operating conditions


The rated characteristics of the switchgear are guaranteed under the following ambient conditions: 


•          minimum ambient temperature  :            –          5          °C

•          maximum ambient temperature :            +          55        °C

•          Ambient humidity                           :            maximum 24 h average of relative humidity 100%

•          The normal operational altitude is up to 1,000 m above sea level




PARAM panels comply with the following Standards: 



  • IEC 62271-1: High-voltage switchgear and controlgear: common specifications

  • IEC 62271-200: AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kA

  • IEC 62271-100: High-voltage switchgear and controlgear - Alternating current circuit-breakers

  • IEC 62271-106: High-voltage switchgear and controlgear - Alternating current contactors, contactor-based controllers and motor-starters

  • IEC 62271-103: High-voltage switchgear and controlgear - Switches for rated voltages above 1 kV up to and including 52 kV

  • IEC 62271-102: High-voltage switchgear and controlgear - Alternating current disconnectors and earthing switches

  • IEC 60255: Measuring relays and protection equipment - Common requirements

  • IEC 61869-2: Instrument transformers - Current transformers

  • IEC 61869-3: Instrument transformers - Inductive voltage transformers

  • IEC 60044-8: Instrument transformers - Electronic current transformers

  • IEC 62271-105: High-voltage switchgear and controlgear - Alternating current switch-fuse combinations

bottom of page