Electrical Engineering ⇒ Topic : Measurement of High Resistance

Measurement of High Resistance

Resistances of 100 kΩ and above are usually termed high resistances. Measurements of high resistances are required for determination of insulation resistance of components and built-up electrical equipment of all types, volumes, resistivity of a material, surface resistivity, and resistance of high circuit elements.

Methods of measuring high resistances are as follows:

• Direct deflection method
  
• Meggar method
• Loss of charge method

Meggar method is the most commonly used method

For Measurements of high resistances:-

1. Direct deflection method

2. Megger method