Microprocessor based Automatic Ratio Meter is the first automatic ratio meter in the country giving digital display of ratio directly.The instrument without any need of balancing precisely & accurately measures the voltage transformation ratio of single phase/3-phase delta or star, without neutral, Zig zag connected transformers, CTs & PTs, Power Transformers.
The Instrument provides isolated test AC voltages of 8V,40V,80V, which enable the testing of both power transformers & Cts..
LCD displays the ratio i.e. ratio of high voltage winding to low voltage winding at low ux in the core. Ratio is displayed in 0.8 – 12000 ** by auto ranging.
Principle of Operation
This micro-processor based Instrument uses ratio-metric circuit in which the ratio of test specimen is compared with known internal standard.
Instrument is protected against any wrong connection across the transformer. Fast acting VBO trips in case of stepping up of test voltage.
Keypad & LCD Display
This is provided for displaying keyboard selected parameter,error/warning messages like incorrect connection, accidental
step up misconnection,for user friendly functioning etc.
We Also Offer
Automatic C & Tan Delta Bridges,Transformer Winding Resistance Meters, Oil Insulation Test Kits,Oil Tan delta, Volume Resistivity & Dielectric constant Meter Insulation Resistance Tester, Contact Resistance Meter.