High Voltage Cables & Wire, HV Connectors & Assemblies, Neutron Shielding & Absorption Materials: Dielectric Sciences: Chelmsford, MA High Voltage Interconnect systems, wire, cable, high voltage insulation systems, DSI primary products, high voltage cables,high voltage wire, HV connectors,hv assemblies, neutron shielding,neutron absorption materials, Dielectric Sciences, Chelmsford, MA Dielectric Sciences, Inc. one of the HVT Group companies, is a reputed leader in the design and manufacture of high voltage insulation systems. DSI primary products include high voltage cables and wire, HV connectors and assemblies and neutron shielding and absorption materials.