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