The voltage divider DNV
DNV - high voltage divider is used to expand the limits of measuring DC voltage with the input impedance (10 ± 0,05) MW.
DNV has a divider input range DC - 0-40kV. For the product high-voltage divider ratios DNV division of 1:1000 and 1:2000, 1:5000. DNV The error is 0.5% or 0.6%.
Dividers DNV have an input voltage output DC resistance (500 ± 25) ohms and the output DC resistance (0,526 ± 0,026) MW.
High-voltage dividers are made DNV dimensions 515 × 80 × 80mm and weighing 1kg.
DNV Dividers come complete with a voltmeter V7-40. They provide a DC voltage of 1 kV to 30 kV, with the voltmeter match:
- 0,001 U (DNV) V dc voltmeter with DNV;
- 0,0005 U (DNV) V dc voltmeter with DNV and shunt K2;
- 0,0002 U (DNV) V dc voltmeter with DNV and shunt K3;
where U (DNV) - the value of the measured voltage at the input of the high voltage divider DNV.
Divider DNV has the following limits permitted by the basic error in the measurement of DC are:
- Voltmeter with DNV: + / - (0,4 +0,04 (Uk / U - 1);
- Voltmeter with DNV and shunt K2: + / - (0,4 +0,04 (Uk / Ush 1 - 1);
- Voltmeter with DNV and shunt K3: + / - (0,4 +0,04 (Uk / Ush 2 - 1);
where Uk - the final value of the limit set of measurements voltmeter (200mV, 2V, 20V, 200V), U = 0,001 U (DNV), Ush 1 = 0,0005 U (DNV), Ush 2 = 0,0002 U (DNV), U (DNV) - the value of the measured voltage at the input of the high voltage divider DNV.
The limits of permissible additional error voltmeter V7-40 (B7-40/1) with DNV and with DNV and shunts K2 and K3 for DC measurements are equal to half the basic error of the temperature change for every 10 ᵒ C within the operating temperature range.
High-voltage divider DNV has dielectric strength voltage 45kv AC, 50 Hz.