Developing an effective gen-set maintenance program
Oct 1, 1996, Demot, Richard; Olson, Gary L.
Conducting maintenance procedures at certain time intervals will improve engine generator set reliability and lengthen unit life.The failure of an engine-generator...
Top testing tips for better maintenance management
Sep 1, 1996, Lawrie, Robert J.
A progressive, forward-thinking mindset at a recently built semiconductor manufacturing plant in the Southwest results in electrical maintenance capabilities...
Determining DC motor rotation direction
Aug 1, 1996, DeDad, John A.
While DC motors are applied mostly in special applications, knowing how to properly connect them is important to their required performance.You're about...
Retrofitting VFD motors at a waste water treatment plant
Jul 1, 1996, Jenkins, Tom
From 50% to 90% of the electrical power consumed at a typical waste water treatment plant (WWTP) with a diffused aeration system is used to run blower...
Determining motor rotation direction.
Jun 1, 1996, DeDad, John A.
While being a fundamental motor installation task, determining rotation direction is critical to the coupled load's operation.You've just had a motor...
Troubleshooting PLCs
May 1, 1996, Rosandich, Ryan G.
Once you get over the "black box" syndrome, PLCs are actually easier to troubleshoot than traditional hard-wired control systems.Programmable logic controllers...
Testing large solid-state devices.
Mar 1, 1996, Huseman, John M.
You have to perform a dynamic test on these devices to determine their condition.Solid-state devices that handle large amounts of power are widely applied...
Servicing surface-mount technology circuit boards.
Feb 1, 1996, Huseman, John M.
Dense packing of electronic components on both sides of circuit boards makes jobsite troubleshooting and repair difficult.In normal situations, when an...
The case of the triple threat.
Feb 1, 1996, Lofdahl, Craig S.
Triplen harmonics lead to poor laser scanner performance and power circuit damage.The consolidation of equipment was supposed to make things easier for...
Infrared testing assures power reliability
Jan 1, 1996, Lawrie, Robert J.
Thermographic inspections of electrical equipment detect hot-spots well before problems occur. Here's how the latest infrared scanning systems at a major...
Answering seven common questions on generator and motor operation.
Dec 1, 1995, Cadick, John
Clarifying rotating equipment fundamentals will aid in electrical design and troubleshooting.Rotating equipment is so common, yet so misunderstood, that...
Troubleshooting PLC circuits by testing thumbwheel switches.
Dec 1, 1995,
One component of a PLC control circuit is the thumbwheel switch; speedy testing of these devices will reduce downtime.Thumbwheel switches, and their associated...
Testing isolation transformers for attenuation.
Dec 1, 1995, Lewis, Warren L.
Measuring common-mode current, not voltage, will provide a real-world measure of isolation transformer attenuation.How can the performance of electrostatic...
Capital equipment; operational materials; software
Nov 30, 1995,
Included in this category are trucks, trenchers, and construction trailers; ladders, scaffolds, and work platforms; storage bins and boxes; lubricants,...
Analyzing transformer insulating fluid.
Nov 1, 1995, Miller, George
As part of a complete preventive maintenance program, periodic oil analysis will monitor the condition of power transformers and detect problems before...
