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Model DI-7

INDUCTIVE VOLTAGE DIVIDER
( Decade transformer )

Applications


To adapt different nominal ratios in the comparison of voltage transformers

  • Measurement of voltage ratios

  • Calibration of voltmeters and ammeters

  • Calibration of voltage dividers

  • Configuration of bridge circuits

Characteristics


  • Specifically designed to be used in the power frequency range (40 - 400 Hz)

  • 7 decades allow great resolution

  • High accuracy

  • Accepts up to 300 V input at mains frequency of 50 or 60 Hz

  • Low output impedance

  • Two stages design with magnetizing winding

  • Surge protected with resistances in every position of the rotary switches

  • Booster type in the last decades to avoid effect of contact resistance of switches

  • Supplied with calibration certificate

Inductive Voltage Divider Model DI - 7

Specifications:

Number of decades: 7
Voltage / frequency: 5 V / Hz
Reference Voltage: 250 V
Input Voltage: < 300 V
Reference Frequency: 50 / 60 Hz
Frequency Range: 40 - 400 Hz
Linearity: 0,0002 %, 10
mrad
Admittance of magnetizing winding:
< (3,5 - j 2,5 ) 10
-5 S @ 100 V ; 50 Hz
< (3,0 - j 2,0 ) 10
-5 S @ 250 V ; 50 Hz

Output impedance:
Resistance: < 2,9
W
Inductance: < 32
mHy

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