Digital microhmmeter PROMET R300

portablebench-toprack-mount

High-accuracy micro-ohm meters up to 600 A for ohmic loads PROMET R300 and R600 high-accuracy, high-precision ohm meters deliver an adjustable test current of up to 600 A which is independent of the supply voltage. These measuring devices utilize the four-wire resistance measurement method, enabling them to meet the most stringent accuracy requirements. State-of-the-art power electronics coupled with a robust design guarantee excellent reliability for stationary and portable use in switching stations or industrial environments. PROMET ohm meters feature a modern operating concept, an interface to the test systems of the ACTAS product range and external control for use with test stands, making them both flexible and versatile. Assessing the condition of contact systems Regular measurements of the contact resistance allow an accurate assessment of the condition of contact systems. Using PROMET R300 / R600, excessively high transfer resistances resulting from poor connections can be identified by measuring the static contact resistance. This ensures that maintenance requirements can be identified at an early stage and down times kept to a minimum. Determination of resistance at three measurement points Because the device is equipped with three voltage measurement inputs, parallel measurements can be carried out at three measurement points in order to perform a static measurement of the resistance of three main contacts or assess the quality of connections, for example. Voltage drop and test current are measured via high-precision measurement inputs so that resistances in the μΩ range can be determined with maximum precision.