The Megger MIT525 5-kV Insulation Resistance Tester offers advanced features and rapid charge capability, with a range consisting of 5 kV and resistance measurement up to 10 TΩ. A key feature of the Megger MIT525 5-kV Insulation Resistance Tester is the ability to take measurements when connected to line power/mains with a dead battery.READ MORE >>
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The ratio of two time-resistance readings (such as a 60-second reading divided by a 30-second reading) is called a dielectric absorption ratio. It is useful in recording information about insulation. If the ratio is a 10-minute reading divided by a 1-minute reading, the value is called the polarization index.READ MORE >>
Insulation is subject to many elements that can cause it to perform at a less-than-acceptable level. Excessive heat or cold, moisture, vibration, dirt, oil, and corrosive vapors can all contribute to deterioration. For this reason, routine insulation testing is necessary.READ MORE >>
Insulation resistance testers can be used to determine the integrity of windings or cables in motors, transformers, switchgear, and electrical installations. The test method is determined by the type of equipment being tested and the reason for testing. For instance, when testing electrical cabling or switchgear (low-capacitance equipment) the time-dependent capacitive leakage and absorption leakage currents become insignificant and decrease to zero almost instantly. A steady conductive leakage current flow is reached almost instantly (a minute or less) providing perfect conditions for the spot-reading/short-time resistance test.READ MORE >>
A megohmmeter (sometimes referred to as a megger) is an electrical test instrument designed to test extremely high resistances by producing a DC (direct current) voltage. A megohmmeter produces a high voltage, low current DC charge which allows for testing resistances commonly encountered in electric motor winding or cable insulation tests.READ MORE >>
Electrical test meters report electrical circuit properties, such as voltage, resistance, capacitance, and continuity. Available in handheld or benchtop form, they detect electrical problems in equipment, wiring, and power supplies. A variety of probes, clamps, and leads can be used to connect the meter to a circuit or device. Single-function meters, such as battery testers and voltage testers, measure one property of a circuit, and multimeters measure multiple properties. Electrical test meters display information either in analog form using a needle that moves on a calibrated scale, or in digital form on an LED screen.READ MORE >>
Since a majority of electrical maintenance and testing involves evaluating insulation integrity, insulation resistance testing is very important. Electrical insulation starts to age as soon as it's made, and aging deteriorates its performance. Harsh installation environments, especially temperature extremes and/or chemical contamination, cause further deterioration, and as a result, personnel safety and power reliability can suffer. Therefore, it's important to identify this deterioration as quickly as possible so that the necessary corrective measures can be taken.READ MORE >>
The Megger 210415 Analog Megohmeter is a reliable tester used by electrical maintenance personnel. Used in measuring resistances on cable insulations the Megger 210415 Analog Megohmeter locates insulation problems on transformers, motors and generators that can significantly affect equipment's efficiency. Regular maintenance conducted with the 210415 Analog Megohmeter can greatly reduce unnecessary breakdowns and save time in repairs.
The 210415 test set is a high voltage Megohmmeter that has a variable output voltage of up to 15 Kilo Volts, capable of measuring insulation resistances of up to 100,000 Megohms. The 210415 can conduct dielectric absorption and step voltage tests which makes it ideal in detecting bad insulation spots and bad layers in multi-layered insulators. Featuring an integrated voltage stabilizer that can be switched on for accurate measurements, the 210415 Analog Megohmeter is built to be tough and resist impact which allows the device to handle harsh outdoor environments.