HC CONTROL INSTRUMENTS is the South African power industry's leading supplier of high voltage test equipment for testing substation apparatus and cables. Our products are smaller, lighter, offer more features, provide higher power with longer duty ratings and are among the most rugged designs available for field testing all types of utility loads.

We supply VLF and Tan Delta testing products, AC hipots and DC hipots insulation test sets, capacitor discharge units, 0.1Hz Systems, Cable Fault Location Equipment, Insulation Test Equipment from 5 to 10kV, Low Resistance Ohmmeter Test Equipment, Systems for the Testing and Rewinding of Electrical Motors and Generators as well Substation Test Equipment for Relays, Switchgear, Industrial Parts Washers, and Battery Test Units