What is Insulation Tester? An insulation tester is a device used for determining insulation resistance, continuous current, alternating current, and testing. With this, measurements can be taken for different voltages, beginning with 100V up to 10,000V. Measurements meet the DIN VDE 0413 part 1 standards. The Insulation Tester comes with a test mechanism, clips, and a carrying case. The insulation meter can be equipped for test laboratories if an optional DIN EN ISO is captured.
Types of insulation resistance tests. The proof test, short-time/spot reading test, time resistance test, and step voltage test are four types of insulation test.
1.Proof Test Proof testing is an important step in the installation of new machinery to protect against miswired and faulty equipment. A proof test is often referred to as a go/no go test because it tests the system for incorrect installation.
2. Short Time Test In a short time test, the tester is connected across the insulation of the motor windings. A test voltage is then applied for a fixed period of time, usually, it is kept for 60 seconds. The most important aspect of this test is that it remains constant in duration from test to test. Once the time period has over, an insulation resistance measurement can be recorded.
3.Time resistance test. Unlike the short time test, the time resistance test method can provide fairly conclusive results without the luxury of past test measurements. This test method is based on taking continuous readings at fixed time intervals and then plotting the readings. This is an especially effective method when moisture and other elements might be present.
4.Step Voltage Test A step voltage test involves testing the insulation at three or more voltages and comparing the results. Good insulation will show a relatively constant resistance reading regardless of the voltage applied.