The TD90-MC tan delta testing system is a portable cable diagnostics system for confirming the dielectric condition of medium voltage cables. The battery powered, weight optimized device - only 16 kg - is perfectly suitable for mobile use.

The HVA90 Insulation Tester and HVA94 Cable Tester must be used with the TD90 tan delta testing system, usable over a range between 1 to 90 kV peak. The dissipation factor measurement is performed with an accuracy of ± 10exp-4 for loads in the range of 500 pF to 10 μF.