MINIATURE POWER DISTRIBUTION SUBSTATIONS

Standard Coastal 315kVA and 500kVA Miniature Substation

Our miniature substation incorporates either SF6 or Vacuum Circuit Ring Main Units subject to client specification.They meet the requirements of SANS 1874. We offer a range of various brands and makes of RMU's and circuit breakers ranging from Siemens, Lucy, ABB, Eaton, Schneider and LS.

Miniature substations are equipped with high quality oil cooled transformers that comply with SANS 780 and are sourced from local suppliers and manufacturers. Windings can be either copper or aluminium based on customer requirements.

We supply both coastal and inland specifications, manufactured in powder coated mild steel, 3CR12 or 304 stainless steel. Miniature substations are only required to comply with SANS 1029:2010/NRS 004:2010. Our busbars in the miniature substations are based on a type tested design.

Coastal Specification Mini Substation Data Table
Specification 315kVA 500kVA
Product Code W1 W3 W2 W4
Ring Main Unit
Standard Configuration SF6, IDI Schneider Earth Fault Indicator SF6, IDI Schneider Earth Fault Indicator
Transformer
Certification SABS 780 and NRS 004 SABS 780 and NRS 004
Windings Copper Aluminium Copper Aluminium
Primary Rating 11 000V 11 000V
Secondary Rating 400V 400V
Type 3 Phase Oil Cooled 3 Phase Oil Cooled
Vector Group DYN11 DYN11
Accessories and Finishings Dead Break Plugs Oil Temperature Indicator Oil Level Indicator Type C Bushings (Cable Box) 22kV Zinc and Galvanising Coastal Application Dead Break Plugs Oil Temperature Indicator Oil Level Indicator Type C Bushings (Cable Box) 22kV Zinc and Galvanising Coastal Application
Tank Material Mild Steel, Welded Sealed Mild Steel, Welded Sealed
LV Compartment
Shunt Trip Coil 2 x Phase Barriers 3P MCCB Shunt Trip Coil 2 x Phase Barriers 3P MCCB
Busbars Copper Copper
Housing
Roof 2.0mm 3CR12 2.0mm 3CR12
Housing Material and Fixtures 2.0mm 3CR12
Earth Straps on Housing Streetlight Panel Provided (Enclosure only)
2.0mm 3CR12
Earth Straps on Housing Streetlight Panel Provided (Enclosure only)
Panel Material 3CR12 - Powder Coated 3CR12 - Powder Coated
Doors Material and Fixtures Protruding doors with concealed hinges and fitted with a restraining device to prevent whipping in windy weather.
Earth Straps on Doors
Allen Key Bolt, 3 Point Locking Mechanism
Protruding doors with concealed hinges and fitted with a restraining device to prevent whipping in windy weather.
Earth Straps on Doors
Allen Key Bolt, 3 Point Locking Mechanism
Paint Thickness To specifications provided To specifications provided
Final Coat Colour To specifications provided To specifications provided
Fasteners Stainless Steel Stainless Steel
Base 76 x 38 x 5 Galvanised and Painted QD Black 100 x 50 x 6 Galvanised and Painted QD Black
Note:
  • Detailed required specifications to be submitted with your enquiry.
  • Lead times need to be confirmed at the time the order is placed.
  • Can be customised to other brands and specifications.
  • Above refers to standard coastal specifications.
  • Specialised Solutions Miniature Substations: 630, 800, 1000kVA

    Coastal Specification Mini Substation Data Table
    Specification 630kVA 800kVA 1000kVA
    Product Code W5 W8 W6 W9 W7 W10
    Ring Main Unit
    Preferred Make SF6, IDI
    Schneider Earth Fault Indicator
    SF6, IDI
    Schneider Earth Fault Indicator
    SF6, IDI
    Schneider Earth Fault Indicator
    Transformer
    Certification SABS 780 & NRS 004 SABS 780 & NRS 004 SABS 780 & NRS 004
    Windings Copper Aluminium Copper Aluminium Copper Aluminium
    Primary Rating 11 000V 11 000V 11 000V
    Secondary Rating 400V 400V 400V
    Type 3 Phase Oil Cooled 3 Phase Oil Cooled 3 Phase Oil Cooled
    Vector Group DYN11 DYN11 DYN11
    Accessories and Finishings Dead Break Plugs
    Oil Temperature Indicator Oil Level Indicator
    Type C Bushings (Cable Box) 22kV Zinc and Galvanising Coastal Application
    Dead Break Plugs
    Oil Temperature Indicator Oil Level Indicator
    Type C Bushings (Cable Box) 22kV Zinc and Galvanising Coastal Application
    Dead Break Plugs
    Oil Temperature Indicator Oil Level Indicator
    Type C Bushings (Cable Box) 22kV Zinc and Galvanising Coastal Application
    Tank Material Mild Steel, Welded Sealed Mild Steel, Welded Sealed Mild Steel, Welded Sealed
    LV Compartment

    Shunt Trip Coil
    2 x Phase Barriers 3P MCCB
    Shunt Trip Coil
    2 x Phase Barriers 3P MCCB
    Shunt Trip Coil
    2 x Phase Barriers 3P MCCB
    Busbars Copper Copper Copper
    Housing
    Roof 2.0mm 3CR12 2.0mm 3CR12 2.0mm 3CR12
    Housing Material and Fixtures 2.0mm 3CR12
    Earth Straps on Housing Streetlight Panel Provided (Enclosure only)
    2.0mm 3CR12
    Earth Straps on Housing Streetlight Panel Provided (Enclosure only)
    2.0mm 3CR12
    Earth Straps on Housing Streetlight Panel Provided (Enclosure only)
    Panel Material 3CR12 - Powder Coated 3CR12 - Powder Coated 3CR12 - Powder Coated
    Doors Material and Fixtures Protruding doors with concealed hinges and fitted with a restraining device to prevent whipping in windy weather.
    Earth Straps on Doors
    Allen Key Bolt, 3 Point Locking Mechanism
    Protruding doors with concealed hinges and fitted with a restraining device to prevent whipping in windy weather.
    Earth Straps on Doors
    Allen Key Bolt, 3 Point Locking Mechanism
    Protruding doors with concealed hinges and fitted with a restraining device to prevent whipping in windy weather.
    Earth Straps on Doors
    Allen Key Bolt, 3 Point Locking Mechanism
    Paint Thickness To specifications provided To specifications provided To specifications provided
    Final Coat Colour To specifications provided To specifications provided To specifications provided
    Fasteners Stainless Steel Stainless Steel Stainless Steel
    Base 100 x 50 x 6 Galvanised and Painted QD Black 180 x 70 x 10 Galvanised and Painted QD Black 180 x 70 x 10 Galvanised and Painted QD Black
    Note:
  • Detailed required specifications to be submitted with your enquiry.
  • Lead times need to be confirmed at the time the order is placed.
  • Can be customised to other brands and specifications.
  • Above refers to standard coastal specifications.