How to use megger tester pdf

So, you should be aware of this instrument and its use in . Better information, both in quality and quantity. Potential Conditions Discovered During Testing. TESTING ELECTRICAL APPLIANCES.

All electrical installations and equipment comply with insulation resistance specifications so they can operate safely.

Whether it involves the connection cables, the sectioning and protection equipment, or the motors and generators, the electrical conductors are insulated using materials with high electrical.

V insulation resistance testers , enabling the user to choose the most applicable set for the work at hand.

These leads are designed in full compliance with. This allows them to calculate and display the resistance of the insulation (how well the insulation is keeping the current inside the wire, or letting it leak out). An effective insulation resistance system. We believe that with the right equipment and knowledge you will work more safely, ef- ficiently and produce more reliable test conclusions. The megger sends voltage through the cable to . Regular insulation resistance testing is one of the most cost effective, non-destructive methods of identifying ageing in electrical equipment.

Safety Authorities recommend the use of fused test leads when measuring voltage on high energy systems. Replacement fuses must be of the. HV power supplies and DC dielectric, transformer turn ratio, and capacitancefdissipation factor test sets for use in the field testing of large power apparatus.

LIMITED WARRANTY AND LIMITATION OF LIABILITY. Megger is registered in the UK . Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is one year and begins on the date of shipment.

Parts, product repairs, and services are warranted for days. Check the appearance of the motor. Manually rotate the shaft to check the bearing condition. Note the motor data from the motor NAME PLATE.

Earth Continuity: Use your ohmmeter to verify the resistance . A practical guide to earth resistance testing. Broadly speaking, “earth resistance” is the resistance of soil to. Earth resistance is measured in two ways for two important fields of use : 1. V test voltage and will be familiar to all electrical mainte- nance personnel.

We will also discuss the principles of operation and use of test equipment. No matter what type of command you are assigned to, . Measuring low resistance helps identify resistance . Understand how to interpret and use the . Periodic testing is, therefore, your best approach to preventive maintenance of electrical equipment, using record cards as shown in Fig .