Separately supplied instruments, designed for high voltage tests are:

Voltmeter is designed specially for test voltages (AC and DC) measuring.
DN series voltage dividers are designed for test voltages (AC and DC) measuring (1.0-200 kV).
Instrument - partial discharges characteristics meter type PDM 201 represents digital system of partial discharges characteristics measuring.
SMD detectors are designed for leakage current measurements in insulation during high voltage dielectric tests by d.c. (SMD-10) or a.c. (SMD-11) standard test voltages.