How to find the fault of MTU diesel generator in daily life

Diesel generators may fail from time to time. This is inevitable, especially as systems age. Therefore, it is a good idea to always have some necessary diagnostic tools on hand.

Technicians and engineers use a variety of electrical or electronic diagnostic tools to test and troubleshoot power generation systems at any time or when problems arise. Multimeters, clamp ammeters, and megohm meters are the most commonly used functional troubleshooting tools for diagnosing and servicing generators.

To learn more about these basic devices, here is some basic information about multimeters, clamp ammeters, and megohm meters.

A multimeter is a measuring tool that can measure a variety of electrical characteristics, such as voltage, resistance, and current. It is one of the most common tools used regularly by power generation technicians and engineers.

The meter is usually used to check the open circuit, short circuit and ground in the circuit. Today, multimeters have been built as digital multifunctional electronic testing tools with multiple functions.

When troubleshooting a generator with a multimeter - voltage, ohms and amperes can be measured. Some advanced multimeters can take even more readings, such as frequency and capacitance.

To test the resistance of a generator using a multimeter, disconnect the conductors and coils of the circuit to get an accurate resistance reading. On the other hand, the generator voltage output test is done without isolating the circuit. For amperage tests, the circuit is usually routed through a multimeter.

A clamp ammeter, commonly called a clamp meter, is an instrument that uses wide jaws clamped to the outside of an electrical conductor to provide a non-contact measurement.

It can measure a variety of properties, including resistance, continuity, capacitance, voltage, etc. Like multimeters, clamp-on ammeters have undergone several refinements over the years. Today's digital clamp-on ammeters can already safely perform a variety of precise measurements under different conditions.

Clamp ammeters are commonly used in industrial equipment, industrial controls, electrical systems, and commercial HVAC. They are commonly used as AIDS to overhaul generators, troubleshoot installation problems, perform final circuit tests, and perform regular and preventive maintenance on other electromechanical systems.

A megohm meter is a special type of ohmmeter used specifically to measure the resistance of an insulator. It is also commonly known as an insulation resistance tester.

Megohm meters are often used by technicians and engineers because they provide a quick and easy way to identify the insulation condition of wires, generators, and motor windings.

As a diagnostic tool, megohm meters transmit high voltage and low amperage through wires or coils. The general rule is that insulation with a reading of more than 1 megohm is considered acceptable. If the readings indicate deterioration or damage to stator winding insulation, the alternator must be replaced or may require maintenance, such as generator rewinding or replacement.

Multimeters, clamp ammeters, and megohm meters are some of the most basic tools for troubleshooting generators and other electromechanical systems. These instruments come in handy whenever the generator suddenly breaks down. They are also essential tools for regular maintenance of equipment.

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