Insulation resistance tester is used to determine the insulation resistance value of the item being tested by applying several hundred to several thousand volts to cables and equipment to determine the insulation resistance value of the item being tested. The modern insulation resistance tester often has an ohm meter function available and it is often included as a function of a multimeter.
Insulation resistance tester is the most important equipment for insulation resistance testing. It is because 80% of electrical maintenance and testing involves evaluating insulation integrity.
The purpose of using insulation resistance tester for insulation resistance testing is as a quality control measure at the time a piece of electrical equipment is produced. The testing is also used as an installation requirement to help ensure specifications are met and to verify proper hookup, a periodic preventive maintenance task, and a troubleshooting tool.
When you are using insulation resistance tester, you have to maintain consistency in performing the insulation resistance testing. It is because electrical insulation will exhibit dynamic behavior during the course of your test; whether the dielectric is “good” or “bad”.
Insulation resistance tester is available in various options to choose from. If you are going to perform insulation resistance testing, you can take a look at the following information to find the insulation resistance tester you are looking for.
A.W. Sperry 3322A Insulation Resistance Tester
A.W. Sperry Model 3322A is the first option that you can take a look. This A. W. Sperry 3322A is three-range insulation resistance testers for testing low-voltage installation below 600V. It is designed to meet the IEC 61010-1, IEC 61010-031 and IEC 61557 safety standards.
This insulation resistance tester is equipped with auto discharge function. It means that when insulation resistance like a capacitive load is measured, electric charges stored in capacitive circuits are automatically discharged after measuring. This tester measures AC voltage on all ranges without pressing the Test button. It features Shoulder strap for hands-free use, back light function to facilitate working at dimly illuminated locations, and color-coded scales for easy reading.
Fluke 1507 Insulation Resistance Tester
Fluke 1507 Fluke is the second option of insulation resistance tester. The fluke 1507 is compact, rugged, reliable, and easy to use. With multiple test voltages, it is ideal for many troubleshooting, commissioning, and preventative maintenance applications. With the compare function of Fluke 1507, you can make repetitive tests to be simple and easy.
Repetitive or hard-to-reach testing is easy with the remote test probe. Save both time and money with automatic calculation of polarization index and dielectric absorption ratio. The live circuit detection prevents insulation test if voltage greater than 30-Volts is detected for added user protection, and the 1507 has auto-discharge of capacitive voltage for added user protection. The tester can perform at least 1000 insulation tests, or at least 2500 earth bond resistance measurements with fresh alkaline batteries at room temperature.
Amprobe AMB-45 Insulation Resistance Tester
Amprobe AMB-45 is the third option of insulation resistance tester that may suit with your needs. The Amprobe tests the insulation of wires, cables, transformers and electrical motors. It comes as a complete kit including the test leads and the PC software. It has a few selectable test voltages which are 250V, 500V and 1000V.
The AMB-45 Insulation Resistance Tester has a programmable timer to allow the user to perform the Dielectric Absorption Ratio Test. It has a sensitive Ohm meter which is for checking the resistance of motor windings. Also, it is fast and easy to use and has a rugged, durable design.
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