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Download Voltage Ratio Box - MD Electricals
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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 : : : : : : : : : 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