Metal junctions like circuit breaker contacts and bus bar connections may develop weakened joints that do not show any visible signs after a while of operation. When the problem is not addressed immediately, the defect may further deteriorate and eventually fail. This can cause instabilities in the electrical system and damage to other equipment.
Low resistance measurement is a way of assessing the condition of metal joints in electrical systems. This diagnostic method is also conducted for other applications like in aviation, automotive and metal works.
One of the popular devices used for low resistance measurement is the Megger DLRO10HD 10A Digital Low Resistance Ohmmeter.
This device features low and high power output settings for condition diagnosis. It can put out 10 Amperes for 60 seconds which makes it ideal for charging inductive loads.
Other Megger DLRO10HD 10A Digital Low Resistance Ohmmeter features include:
- Input protection circuitry up to 600 volts
- Selectable test modes using an easy to use rotary switch
- Durable case which makes it ideal not only for industrial but also field use
- Can deliver 10 amperes to 250 mΩ loads and 1 ampere to loads of up to 2.5 Ω
Related electrical test equipment available for rent from Protec: