Download Voltage Ratio Box - MD Electricals

MD E
VOLTAGE RATIO BOX
DISCRIPTION :
Voltage Ratio Box is very simple and accurate instrument, housed in wooden box .It is easy to operated and
useful to step down the voltages for measurement. The unit works on 230V, 1ph, 50Hg AC Aux. Supply. Aux.
Input supply to unit is provided through a mains cable with three pin plug. The uses of three core cable enable the
unit to be properly grounded. The voltage ratio box has maximum input voltage of 1000 volts. The suitable
tapping is provided on 750V, 500V, 250V, 150V, 100V and 50 Volts. The output voltages have facility to buffer it. If
the output voltage is connected to meters or equipment where the input impedance is quite low, then it is more
accurate to use buffered output. In the voltage ratio box unit gain Amplifier is used to buffer the output voltage
with on built dc power supply for current amplifier. This requires the 230V AC supply. The short circuit protection
is given by means of HRC glass fuse.
ELECTRICAL SPECIFICATION
Input Voltage.
Output Voltage.
Tapping On Input voltage
Output Impedance
a) Without buffer
b) With buffer
Input Impedance
Aux. supply
Variation in Impedance
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MECHANICAL DIMENSIONS
:
1.
2.
3.
4.
5.
6.
7.
1000V, (maximum)
2V (maximum at 1000volt)
750V,500V, 250V,150V,100V,50V.
5 Kilo ohms.
100 ohms.
4 Megs ohms.
230V +/-, 1-ph, AC Supply.
+/- 5% of connected value.
SIZE
: 150 X 200 X100 MM ( L x H x D )
WEIGHT : 2 .7 Kg
For more details please contact :
M D ELECTRICALS
Office/works: 50/16,VadgaonNarhe Road, Narhe, Pune 411 041. Tel. : 91-020-24393922
Tel fax. : 91- 020-2439 3407. Email. : [email protected] Wesbite : mdelectricals.com
Subjected to change without notice