Vanguard Test Info: Why Use a DLRO (Digital Low Resistance Ohmmeter)?

Vanguard Auto-Ohm 100 100A Micro-OhmmeterIf you are reading this blog, it might be because it is time to break out a Micro-Ohmmeter to ensure the reliability of electrical connections throughout your electrical power system. The Vanguard Auto-Ohm is the ideal tool to use when evaluating the integrity of electrical bonds to power system equipment, as well as the contact resistance within the electrical equipment itself.  

High Current Low Resistance Testing with a 100A DLRO

Vanguard Auto-Ohm100A 10 ampere Digital Low Resistance Ohmmeter is sufficient for many low resistance measurement applications. However, industry standards and guidelines will recommend, if not require a minimum of a 100 amps DC source when evaluating connections relating to medium and high voltage power system apparatus. Very small changes in contact resistance can have significant impacts on these apparatus in terms of how they perform in service.  The use of higher current helps in the precision of the measurement and is therefore preferred when evaluating connections in higher voltage applications.

Rent Megger DLRO200-115, Test Your Electrical System with Confidence

Megger DLRO200-115 200A Digital Low Resistance OhmmeterWhen checking the continuity of a test circuit, rely on the Megger DLRO200-115 200A Digital Low Resistance Ohmmeter to quickly ramp the test current up to the desired level. An auto-ranging and easy to use DLRO, the Megger DLRO200-115 measures resistance in switch and breaker contacts, bus-bar joints, and other high-current electrical systems.

As many as 300 sets of results may be stored in the test set’s on-board memory for later download to a PC or may be sent directly to a printer via the RS232 port.

AEMC 6250 Micro-Ohmmeter Resistance Analyzer

aemc_6250.jpgThe AEMC 6250 Micro-Ohmmeter is 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.