Technical library

Electric heat tracing systems are widely used inprocessindustriesand have applications in many other areas,as well. In general, these systems are used to maintain a preferred temperature. Applications include:keepingmaterials flowing at an ideal viscosity; preventing pipes from freezing,to help keep railroad tracks, roofs, gutters, antennas, etc.free from ice and snow; or to meet stricttemperature variance requirements in food, pharmaceutical, and cosmetic processing industries, to name just a few.

This article describes the application of DFR and HV DFR as a preventive method to evaluate the condition and prioritize maintenance activities on HV and EHV bushings and relates some case studies. 

To help protect you from serious injury the IEC has developed a system of safety categories (CAT) related to the design of your tester and the locations in which you work.  We can assist your certification and maintenance testing for predictive, diagnostic or routine purposes. By working closely with electrical contractors, both large and small, standards bodies and scheme providers, we contribute to the dependability and advancement of the electrical installation industry.

A look at the equipment available for PAT testing computer systems.

Trax Control Software download

The Megger 35829 CT Adapter is designed to allow the MPQ analyzers operate with various manufacturers current clamps. This CT allows current clamps that have male banana jack terminations to be used with the MPQ analyzer.

If a scanner is used to scan a battery bar code the battery string name will be saved in the data file. A bar code can be created with a string name.  This is then scanned into the BITE2 receiver, using the bar code reader. When the data is transferred to Power DB the string will display the bar code, during the download.

Batteries can present an arc hazard due to their exposed terminals (posts). If a non-insulated tool should fall across these terminals the resulting arc flash can injure people in the vicinity as well as damage equipment. This is why insulated tools should be used when working on battery strings. This is also why some batteries have caps covering their posts. These caps are removed during testing.

In 2007 FERC approved 83 NERC (North American Electric Reliability Council)   Reliability Standards, the first set of legally enforceable standards for the U.S. bulk power system. Compliance with approved NERC Reliability Standards is now mandatory and enforceable in the United States.

Ohmic measurements can be performed with AC or DC current. Which provides the most information about the battery? To answer this we first have to ask what the characteristics of a battery are.