RD-90 kilovoltmeter

RD-90 kilovoltmeter 
RD-90 provides a measurement of:
- RMS value of the AC voltage of 50 Hz.
- DC average value.
RD-90 can be used to test high-voltage laboratories of electrical and energy profile, as well as scientific research, institutions.
Voltage nonsinusoidality ratio must not exceed 8%.
Ripple DC voltage must not exceed 1%.
The distance from high-voltage inputs of RD-90 to power oject not less than 0.5 m.

Measuring range DC voltage: from 10 to 100 kV.
Measuring range of the AC voltage: from 10 to 90 kV.
Bandwidth on AC metering: 47,5-52,5 Hz.
Input impedance of high-voltage unit RD-90 on DC 360 ± 2 MOhm.
Input impedance of high-voltage unit RD-90 on AC, 50 Hz: 270 ± 5 MOhm.
Maximum permissible relative error of DC and AC measurement: ± 1,0%.
Power supply of HV unit and remote control unit: 4xNi-MH batteries AA of 1.2 V and a capacity of 1.8-2.1 A • h:
Supply voltage: 5 ± 0,2V.
Radiochannel range: at least 5m.
Continuous operation of RD-90 with an input voltage up to 90 kV: up to 8 hours.
Operation mode setup time after the power:1 minute.
Dimensions: 425x285x120 mm;
Weight - 9,5 kg.

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