high resistance measurement Archives

Electrical measuring instrument

Megger method for measurement of high resistance

Construction- A megger is a portable device which is used for the measurement of high resistance. The component of megger are Permanent magnet C shaft Hand driven generator Resistances RC and RD Two Coils- Control coil (Cs) Deflection Coil (Cd) Working Principle- As current provided by the hand driven generator Read more…

By Sachidananda Dhar, 8 months ago

Electrical measuring instrument

Direct deflection method for measurement of high resistance

From fig 1 we are going to measure the resistor value of a cable with outer metallic sheath available. The galvanometer measures the current between the outer sheath and the conductor current. The galvanometer is very much sensitive to the current because the current value is in the range of Read more…

By Sachidananda Dhar, 8 months8 months ago