LARGE DISTRIBUTION TRANSFORMERS :
RANGE: 5000kVA to 20 000kVA
PRIMARY VOLTAGES: up to 33kV
TAPPINGS: Off-circuit Tap switch (OCTS) or on-load Tap Changers (OLTS)
TAPPING RANGE 2,5% to 5% (OCTS) or 5% to 15% (OLTS)
TERMINATION: HV & LV Outdoor open bushings or : HV & LV cable boxes
TANK CONSTRUCTION: Free breathing with bolted on lids, flat under base or Skid base
COOLING: ONAN/ONAF
FITTINGS: Lifting lugs, earth terminal, surge arrestor brackets when requested, rating & diagram plate, drain & filter valve, Jacking pads, Oil level indicator, Oil temperature indicator, winding temperature indicator, dehydrating breather.
STANDARDS: SABS, SANS 780
SMALL and MEDIUM TRANSFORMERS :
RANGE: 5kVA – 5000kVA
PRIMARY VOLTAGES: up to 33kV
TAPPINGS: External Tapping connection (single phase) or of circuit Tap-switch (OCTS)
TERMINATIONS: HV Outdoor open bushings or HV & LV cable boxes
TANK CONSTRUCTION: Sealed welded cover or sealed bolted cover.
COOLING: ONAN
MOUNTING ARRANGEMENT: Pole mounting with brackets or flat base for pole mounting platform mounting
STANDARDS: SABS, SANS 780