ACTOM Power Transformers, based in Wadeville, Germiston, South Africa, has manufactured power transformers for over 50 years. The basic designs have been developed and refined over the years from the original companies, English Electric, First Electric, Johnson & Phillips, GEC Alsthom and Bonar Long, that were amalgamated to make up the present ACTOM Group in South Africa.
ACTOM Power Transformers has had a period of rapid development over the past 10 years. Large sums have been invested in new factory buildings, manufacturing and processing equipment which has enabled the Company to increase both production output and move into higher rated power transformers.
ACTOM Power Transformers manufactures transformers from 16kVA up to and including 315MVA with voltages up to 300kV. These transformers are supplied to electricity distribution utilities, the mining sector, industrial plants, public works authorities and turnkey contractors. The power transformers are mostly of the step-down type, equipped with on-load tap changers, either naturally cooled or, for larger units, incorporating forced oil and air-cooling.
The basic units are of three-phase, three-limb construction, comprising fully mitred low-loss cores of the boltless type with disc HV and helical or disc LV and tapping windings.