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...
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...
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...
Energy management plan slashes power bills at Bell Labs
Nov 1, 1995, Lawrie, Robert J.
Energy reduction techniques employed at the huge research and development center save $1.4 million per year.AT&T has been involved in a corporate-wide...
Preventive maintenance of motors and controls
Oct 1, 1995,
A well-planned preventive maintenance program is the key to dependable, long-life operation of motors and generators.In modern plant operations, unscheduled...
Using the right meter for power quality troubleshooting.
Oct 1, 1995, Piehl, Dick
When you're called in to troubleshoot a power quality complaint, what's the logical sequence for measurements, and what tools do you really need?With...
Maintaining low voltage power circuit breakers.
Sep 1, 1995, DeDad, John A.
Believe it or not, air circuit breaker problems are the cause of almost 20% of electrical power system failures, according to a survey conducted by the...
Detecting moisture in dry type transformers.
Aug 1, 1995, Campbell, Dean
Resistance testing verifies moisture presence; simple dryout methods eliminate the problem.Failure of dry type transformers can occur during operation...
Contractor safety plan offers multiple rewards.
Aug 1, 1995, Lawrie, Robert J.
Comprehensive electrical safely program reduces accidents, builds morale, increases productivity, and boosts the bottom line.Electrical safety is of paramount...
The case of the soon-to-be overloaded neutral conductor.
Aug 1, 1995, Moravek, James
Odd triplen harmonic currents and neutral overloading go hand-in-hand.A facility manager of a data center was informed by the Information Systems Department...
Troubleshooting signal attenuation in a CCTV system.
Aug 1, 1995, Lewis, Warren H.
This case history shows how decibel knowledge, a handheld oscilloscope, and intuitive thinking can be used to solve a troublesome problem.Now that we...
Sensible transformer maintenance.
Jun 1, 1995, Raymond, Charles T.
Correct interpretation of maintenance data from transformers is vital for increased reliability, long life, and advanced information on possible need...
Beware of electrical safety hazards.
Jun 1, 1995,
Knowing the safely hazards of electrical construction can help reduce accidents and fatalities.Electric current can injure and even kill directly. It...
Troubleshooting for electrical noise
Jun 1, 1995, Lewis, Warren
A portable oscilloscope and keen troubleshooting instincts help solve an EMI problem.Let's take a look at a conducted Electromagnetic Interference (EMI)...
