Electricity and Control March 2023


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High voltage equipment The High Voltage Equipment division has been awarded contracts for the supply of various substation equipment for Hyosung’s Pongola, Elandskop and Hex projects as well as Pinggao’s 80 MW Skaapvlei and 9.5 MW Paleisheuwel projects in theWesternCape, with Proconics being the EPC contractor for both. The equipment to be supplied by the division for these five projects comprises disconnectors, voltage and current transformers, circuit breakers and surge arresters ranging from 6.6 kV to 132 kV. Distribution transformers ACTOM Distribution Transformers was contracted in mid 2022 by Besamandla, the EPC for the Hex project in the Western Cape, to supply 11 kV 360 A 400 V NECRTs for the project’s collector substation. These units are sched uled for delivery in March 2023. NECRTs, which combine neutral electromagnetic cou plers with neutral earthing resistors and an auxiliary trans former in one unit, are designed to act as shock absorbers when earthing power transformers with Delta connected windings. They limit the earth fault current under abnormal conditions. The particular units for the Hex collector sub station are designed to limit the earth fault current to 300 A.

Hex project, for which we are contracted to supply and install four more SBV4E indoor panels,” says Rhett Kelly, Design & Development Manager for the division. The primary switchgear to be supplied for the 22 kV Pongola collector substation comprises nine panels of GMAe gas-insulated fixed pattern indoor switchgear from Schneider Electric, with which ACTOM has a long standing local, value added reseller agreement. For the 11 kV Elandskop collector substation the division will supply a four-panel board of its premier brand AMV12 air-insulated withdrawable pattern indoor switchgear. MV Switchgear’s gas-insulated RMV ring main units will be deployed in all three of these BESS projects. Six 11 kV units will be supplied for Hex, three 11 kV units for Elandskop and twelve 22 kV units for Pongola. Kelly says, “For all three projects we are required to provide custom-designed internal arc classified enclo sures to house the various combinations of extensible and non-extensible RMV ring main units, each with a separate low voltage auxiliary compartment to house the protection relay and supervisory control and data acquisition (SCADA) equipment. All the various switch gear products have been through strict Eskom evalua tion processes, including desktop, factory and sample evaluations,” he adds.

For more information visit: www.actom.co.za

MARCH 2023 Electricity + Control


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