Reduced electrical connections decrease the effectiveness of the ground bed and can cause substantial power quality-related problems and/or catastrophic failure in the event of a major electrical surge.
With the AEMC 6250 10A Micro-Ohmmeter resistance measurements are automatically calculated and displayed, taking into account the measurement value, ambient temperature, reference temperature and metal temperature coefficient. Sample temperature can be manually entered by the operator or directly measured by theAEMC 6250 10A Micro-Ohmmeterwith an external RTD temperature probe.
TheMegger DLRO200-115 Digital Low Resistance Ohmmeter is an a.c. powered low resistance ohmmeter designed to measure d.c. resistances in the low milliohms or microhms using a maximum test current of 200 Amps d.c. The maximum test current available is dependent upon the power supply, the resistance of the test leads and the resistance of the item being tested.
TheAEMC 6250 Micro-Ohmmeteris uniquely designed to conduct tests on both resistive and inductive material, with operator selection directly from the front panel. Three test modes are available: resistive (instantaneous test), inductive (continuous test), and auto (repetitive test). Up to 1500 measurements can be stored and printed directly to a printer or from a PC.
Low resistance measurement will indicate when degradation has or is taking place within an electrical device.Changes in the value of a low resistance element are one of the best and quickest indications of degradation taking place between two contact points.