COMPACT SUBSTATIONS

UP TO 1600kVA 33kV

SGB-SMIT POWER MATLA (previously known as Powertech Transformers) manufactures and supplies compact substations up to 1600kVA.  These substations include ONAN cooluing and Dyn11 Vector Group with IP35 enclosures.  The tapping range is ± 2.5% to ± 5.0% or ± 3.0% to ± 6.0%.  The HV Compartment options are either with an Oil Ring Main Unit or SF6 Ring Main Unit.

The primary voltage options are:

  • 6.6 kV
  • 11 kV
  • 22 kV
  • 33 kV with no RMU

The LV Compartment has a Mains MCB or a Feeder MCB or Fuses with Street Lighting Control (when Specified).  The housing options are either mild steel, 3 CR12 or galvanised.

Each miniature substation is designed and custom made and a full range of optional accessories are available to ensure that each and every individual customer’s requirements are met.

All our miniature substations carry the SABS mark.

The Econosub is typically a miniature substation where the customer requires an oil ring main unit (RMU). The housing is 1260 mm in height compared to the SF6 ring main unit enclosure of 1500 mm in height.  Each econo miniature substation is designed and custom made and a full range of optional accessories are available to ensure that each and every individual customer’s requirements are met.

All our miniature substations carry the SABS mark.

A beachfront miniature substation is a unit based on customer specifications whereby the enclosure material is hot dipped galvanised mild steel.

The transformer tank which is manufactured using 3CR12 corrosion resisting steel is also fitted with a hot dipped galvanised radiator.

The specification is thus of such a nature to ensure maximum protection in high corrosion applications.

Each beachfront miniature substation is designed and custom made and a full range of optional accessories are available to ensure that each and every individual customer’s requirements are met.

All our miniature substations carry the SABS mark.

This high risk miniature substation is identical to the standard miniature substation with the below-mentioned differences:

  • The MV and LV miniature substation doors are flush mounted.
  • The miniature substation enclosure is manufactured from 6 mm Mild Steel.
  • All doors are re-enforced using additional steel strength members diagonally welded from corner to corner on the inside of the door.
  • All doors are fitted with heavy duty hinges.
  • four point locking mechanism (top-centre, bottom-centre, left-centre and right centre) using bars operated and a heavy duty door handle is fitted.

SGB-SMIT POWER MATLA is one of only two suppliers approved by Eskom to supply this high risk unit.

In short the high risk Miniature Substation was designed to reduce vandalism and thus prevent access to live chambers which is advantageous to prevent tampering,

Each high risk miniature substation is designed and custom made and a full range of optional accessories are available to ensure that each and every individual customer’s requirements are met.

All our miniature substations carry the SABS mark.