The Megger DLRO200-115 Digital Low Resistance Ohmmeter (DLRO) checks and measures contact resistance in high voltage circuit breakers, disconnecting switches (isolators) or busbar joints.READ MORE >>
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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.READ MORE >>
The Megger DLRO10HD 10A Digital Low Resistance Ohmmeter is built to endure tough working conditions. Delivering reliable test results
to ensure electric equipment is functioning properly, the Megger DLRO10HD is powered from either its rechargeable battery or line power, and is suitable for continuous testing in production line/repetitive use environments.
Extend the life of necessary electrical system components by measuring and analyzing for any unnecessary high resistance. By using a Megger DLRO10HD 10A Digital Low Resistance Ohmmeter, terminal connections can be tested to make sure their clamps are locked in tight and also to ensure that corrosive rust, moisture or overheating conditions are not present within the junction.READ MORE >>
For testing most electrical problems, a low resistance ohmmeter will find electrical issues with a multitude of differing types of electrical equipment in the field or warehouse. The versatility and usefulness of these quality instruments make them a preferred tool of technicians in a broad range of residential, commercial and industrial applications.READ MORE >>
One of the best methods of testing the current carrying efficiency of conductor junctions is by measuring the junction resistance. Circuit breaker or relay contacts, bus bars and switchgears constantly carry high currents. If the junctions deteriorate, the current carrying efficiency may be reduced and cause several problems like welding of contacts, localized Ohmic heating and eventual component failure.READ MORE >>
When testing for electrical problems in various types of equipment, a low resistance ohmmeter will locate most issues. The versatility and usefulness of low resistance ohmmeters make them a preferred tool of technicians in a broad range of residential, commercial and industrial applications.READ MORE >>
An ohmmeter is an electronic device that measures electrical resistance, such as that of a circuit component. Ohmmeters come with different levels of sensitivity, some are designed to measure low-resistance materials, while others measure higher resistance.
An ohmmeter functions by passing a constant current or voltage though an object, such as voltage from a battery, and then measuring the resulting voltage with an ammeter after it passes through the resistance. The higher resistance the material has, the less current will pass through it. An ohmmeter is typically not used to measure resistance across an entire circuit, but rather through different parts of the circuit, although it can be used to test that a circuit is not broken. Components of a circuit can be removed and tested individually for resistance.
It is important to measure low resistance in order to ensure that a device is still within its optimum resistance range.To measure low resistance, a digital low resistance Ohmmeter or DLRO is used. Protective devices and relay contacts are some components often tested for resistance problems, as these components are exposed to vibration, corrosion, electrical and thermal stress. Ideally, the contact points should have a resistance of a few microOhms to ensure maximum transfer of power. When the resistance of relay or circuit breaker contacts increase due to carbon deposition, corrosion and other contaminants, the contact points may heat up during operation. This can cause further degradation of the components and lead to eventual failure.READ MORE >>