HV Test Sets


HV Testing Instruments


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DN Voltage Dividers

“DN”-series voltage dividers are designed for measuring the high test voltages (1 - 200 kV) according to GOST 17512:

  • DN-xxE - capacitive dividers, for the a.c. power frequency 50 Hz voltage;
  • DN-xxEO - capacitance-resistance compensated dividers, for the a.c. power frequency 50 Hz alternating voltage and d.c. voltages;
DN-10EO DN-50EO DN-100EO DN-100EO-200 DN-200E
DN-series high-voltage dividers

Basic specifications of SF6 dividers are shown in table:

 Characteristic Value
DN-10EO DN-15EO DN-50E(O) DN-100E(O) DN-100EO-200 DN-200E DN-200EO
Rated frequency, Hz 50 50 50 50 50 50 50 
Rated a.c. voltage, kV 10  15 50 100 100 200 200
Rated d.c. voltage, kV 15  20 - (70) - (100) 200 - 200
Test a.c. power frequency voltage, 1 min., kV 13  20 65 125 125 235 235
Rated h.v. capacity, pF 2350  1570 1000 500 500 300 250
Rated h.v. resistance, MOhm 96  144 - (475) - (950) 1535 - 1740
Rated dividing coefficient 100  150 500 1000 2000 2000 2000
Max. dividing coefficients error in the voltage range (0.1-1)Urated, % ± 1,0 ± 1,0 ± 1,0 ± 1,0 ± 1,0 ± 1,0 ± 1,0
Rated SF6-gas pressure (excess), MPa 0,0  0,0 0,2 0,2 0,2 0,3 0,3
SF6 filling volume, liter 0,15 0,15 4 8 8 18 18
Measuring cable (type RG58C) length, m 10 10 10 10 10 20 20
Overall height, mm 320  440 550 870 870 1450 1450
Mass, no more, kg 0,7  1,0 6,0 9,5 9,5 24 24
               

 

  • Main insulation – synthetic film and SF6;
  • Low tgδ value - 0.0005;
  • Rated output voltage – 100 V;
  • Linearity in wide voltage range;
  • Relatively big values of the high-voltage capacity;
  • Advanced electrostatic screens;
  • Absence of PD in internal and external insulation; possibility of using as coupling capacitors for PD measurements;
  • SF6 voltage dividers are flame-proof;
  • High transportation resistance;
  • Maintenance-free;
  • Calibration periodicity – 2 years.

Standard calibration certificate, issued by FSUE "D.I.Mendeleev VNIIM", is accompanied with each divider.
Company also produce DN-220pt standard divider, designed for class 35, 110 and 220 kV voltage transformers on site calibration.


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