Miscellaneous Products Resistive Load Bank A Resistance Bank helps improve the power factor during load loss measurements of a three-phase, 500-volt power transformer. Corona Dispersion Disc Corona Rings are used to prevent corona discharge (causes power loss) that occurs in high-voltage power lines. Kilo Volt Meters / Voltage Dividers Used to measure the kilo volt value of an Instrument Transformer, CT/PT, etc. Sphere Gaps One of the standard methods used for measuring the peak value of the high voltage either DC, AC or impulse voltage. Earthing / Discharge Rods For upto 800 KV system and above. Phasing Rods Phasing Sticks are used for the detection of phase and magnitude voltage in outdoor and indoor power systems. CT Polarity Tester Suitable for working onĀ 230 volts single-phase AC supply and shall be delivered DC output voltage for testing polarity of CT.