Ellies

Medium Voltage Metal-Clad Withdrawable Switchgear

Megatron Obtained the rights from Hawker Siddeley on 1 June 2006 to manufacture the Hawker Siddeley VSI single-busbar and VTD double-busbar switchgear ranges (now known as the MVSI and MVTD ranges respectively) in South Africa.
The Megatron Federal MVSI and MVTD ranges of Metal-Clad Withdrawable Switchgear have been modified to provide increased personnel safety in the event of an internal arc fault, though redesigning which increaded the mechanical strength of the panel.

The MVSI and MVTD ranges are available in currewnt ratings of 630A, 800A, 1250A, 2000A and 2500A. The MVSI range incorporates integral earthing as standard and the MVTD range requires a seperate earthing truck.

For customers requiring additions or modifications to existing Hawker Siddeley switchgear, as well as those looking for new installations, Megatron Federal is able to provide the optimal solution.

In addition, Megatron Federal is experienced in curcuit breaker retrofit projects, where obsolete and potentially dangerous oil circuit breakers are replaced with vacuum equipment.


  

  Breaker and Panel Assembly Line
Breaker and Panel Assembly Line

 

The benefits of retrofitting as apposed to maintenance of existing plant or full replacement are as follows:

  • Increased reliability of plant
  • Reduced maintenance requirements
  • More efficient allocation of scarce resources
  • For the same capital budget, a larger equipment base can be upgraded
  • Safer technology i.e. gas or vacuum versus oil
  • No need for extended outages
  • Quicker downtime
  •  

    In addition to the above, it should be borne in mind that many manufacturers no longer support their older product ranges (refereing to them as "legacy" products).
    Upgrading to new, modern circuit breakers has the added benefit of ongoing support and extension of the installation life of the switchgear by many years.

                                        Withdrawable NVL Circuit Breaker
    Withdrawable NVL Circuit Breaker

    MVSI/IA Single Busbar Panel
    MVSI/IA Single Busbar Panel

    MVSI Product Specifications:

     

  • Voltages up to 12kV
  • Current Ratings up to 2500A
  • Fault Current Ratings up to 25kA
  • Single and Double Busbar Arrangements
  • Withdrawable Circuit Breakers
  • Vacuum Quenched Circuit Breakers
  • Air Insulated Panels
  • IAC A FLR 25kA
  •  

     


    Medium Voltage Metal-Clad Fixed Pattern Switchgear

    Megatron Federal offers several ranges of primary and secondary switchgear including ring main units manufactured by Ormazabal. This primary and secondary distribution switchgear has the benefit of enhanced safety and lower maintenance requirements than traditional switchgear.

    Each unit is imported directly from the manufacturers in Europe, and has the benefit on a complete SF6 recycle program.

    Megatron Federal installation technicians have been trained on both the primary and secondary switchgear ranges offered by Ormazabal and offer a complete installation service, with additional support from Ormazabal's technicians.

    The greatest advantage this switchgear offers is that the units can be fitted together (modular design) on site without intervention within the SF6 encapsulation, which greatly simplifies installation and assembly.


    CPG 36kV Range

                                                                                        

                  

    In addition, the switchgear offers the following advantages:

  • Long-term Operational Reliability
  • Operating Safety due to Interlocked Drive Mechanisms, Front Covers
        and the Ability of the Switchgear to Withstand the Effects of an Internal Arc
  • Extensibility Achieved through Installation of Standard Panels
  • Compact Overall System Dimensions Conventional Mode of Operation
  • Easy Cable Termination
  • Busbars Under SF6 Gas or Silicone-Rubber Screened Insulation
  •  


    GAE Mounted in Outdoor Kiosk

    CPG 1 (Primary Distribution)

  • Voltages up to 36kV
  • Current Ratings up to 2000A
  • Fault Current Ratings up to 31.5kA
  • Single and Double Busbar Arrangements
  • Fixed Circuit Breakers
  • Vacuum Quenched Circuit Breakers
  • SF6 Insulated Panels
  • IAC A FL 31.5kA

  •  

    CGM 36 (Secondary Distribution)

  • Voltages up to 36kV
  • Current Ratings up to 630A
  • Fault Current Ratings up to 20kA
  • Single Busbar Arrangement
  • Fixed Circuit breakers
  • Extendable and Non-Extendable Range
  • Vacuum Quenched Cicuit Breakers
  • SF6 Insulated Panels
  • IAC A FL 20kA
  • GA & GAE Range (Secondary Distribution)

  • Voltages up to 24kV
  • Current Ratings up to 1250kA
  • Fault Current Ratings up to 20kA
  • Single Busbar Arrangement
  • Fixed Circuit Breakers
  • Extendable and Non-Extendable Range
  • Vacuum and SF6 Quenched Cicuit Breakers
  • SF6 Insulated Panels
  • IAC A FL 20kA 


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