Miniature Substations

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
Specification315kVA500kVA
Product CodeW1W3W2W4
Ring Main Unit
Standard ConfigurationSF6, IDI Schneider Earth Fault IndicatorSF6, IDI Schneider Earth Fault Indicator
Transformer
CertificationSABS 780 and NRS 004SABS 780 and NRS 004
WindingsCopperAluminiumCopperAluminium
Primary Rating11 000V11 000V
Secondary Rating400V400V
Type3 Phase Oil Cooled3 Phase Oil Cooled
Vector GroupDYN11DYN11
Accessories and FinishingsDead Break Plugs Oil Temperature Indicator Oil Level Indicator Type C Bushings (Cable Box) 22kV Zinc and Galvanising Coastal ApplicationDead Break Plugs Oil Temperature Indicator Oil Level Indicator Type C Bushings (Cable Box) 22kV Zinc and Galvanising Coastal Application
Tank MaterialMild Steel, Welded SealedMild Steel, Welded Sealed
LV Compartment
Shunt Trip Coil 2 x Phase Barriers 3P MCCBShunt Trip Coil 2 x Phase Barriers 3P MCCB
BusbarsCopperCopper
Housing
Roof2.0mm 3CR122.0mm 3CR12
Housing Material and Fixtures2.0mm 3CR12
Earth Straps on Housing Streetlight Panel Provided (Enclosure only) 		2.0mm 3CR12
Earth Straps on Housing Streetlight Panel Provided (Enclosure only)
Panel Material3CR12 - Powder Coated3CR12 - Powder Coated
Doors Material and FixturesProtruding 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 ThicknessTo specifications providedTo specifications provided
Final Coat ColourTo specifications providedTo specifications provided
FastenersStainless SteelStainless Steel
Base76 x 38 x 5 Galvanised and Painted QD Black100 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
    Specification630kVA800kVA1000kVA
    Product CodeW5W8W6W9W7W10
    Ring Main Unit
    Preferred MakeSF6, IDI
    Schneider Earth Fault Indicator    		SF6, IDI
    Schneider Earth Fault Indicator    		SF6, IDI
    Schneider Earth Fault Indicator
    Transformer
    CertificationSABS 780 & NRS 004SABS 780 & NRS 004SABS 780 & NRS 004
    WindingsCopperAluminiumCopperAluminiumCopperAluminium
    Primary Rating11 000V11 000V11 000V
    Secondary Rating400V400V400V
    Type3 Phase Oil Cooled3 Phase Oil Cooled3 Phase Oil Cooled
    Vector GroupDYN11DYN11DYN11
    Accessories and FinishingsDead 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 MaterialMild Steel, Welded SealedMild Steel, Welded SealedMild 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
    BusbarsCopperCopperCopper
    Housing
    Roof2.0mm 3CR122.0mm 3CR122.0mm 3CR12
    Housing Material and Fixtures2.0mm 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 Material3CR12 - Powder Coated3CR12 - Powder Coated3CR12 - Powder Coated
    Doors Material and FixturesProtruding 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 ThicknessTo specifications providedTo specifications providedTo specifications provided
    Final Coat ColourTo specifications providedTo specifications providedTo specifications provided
    FastenersStainless SteelStainless SteelStainless Steel
    Base100 x 50 x 6 Galvanised and Painted QD Black180 x 70 x 10 Galvanised and Painted QD Black180 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.