Founded in 1970 in response to a growing need for superior hv cable connecting systems, DSI has evolved as a full service provider of high voltage insulation systems. We design, manufacture and test utilizing problem solving expertise based on solid engineering concepts and years of empirical experience. DSI is a resource for those with exacting and difficult HV cable, connector and assembly requirements as well as exotic material needs, for example, neutron absorption and shielding products.

DSI is a subsidiary of the HVT Group ( which is majority owned by HEICO Corporation (, NYSE symbol HEI.

DSI is a fully accredited and registered ISO 9001:2015 company.