MIDWEST was asked by a retired electrician why we bother disassembling a bus plug to recondition it. He worked for a contractor for years and they serviced bus plugs and bus duct a few times. But all they had to do was clean them off and operate them a couple
ITE RV366 Bus Plugs Available at www.swgr.com
times. They never found any problems. They didn’t bother removing them from the bus duct. He said he worked on GE General Electric bus plugs, Square D bus plugs and westinghouse bus plugs. He wanted to know what we would find that they didn’t. The obvious area of concern would be the disconnect fingers on the back of the bus plugs. These are not visible unless you remove the bus plug from the bus duct. It’s not unusual for disconnect fingers to be misaligned, bent or damaged by overheating due to improper fit on to the bus duct. In addition, we often find fuse holder supports or operating mechanism supports actually broken. A broken support for an operating mechanism is a disaster waiting to happen. It’s especially dangerous because it will fail right when you are operating the bus plug. And that’s a bad place to be if you are the one switching the bus plug. The concern is for the safety of the person doing the switching. It’s easy to repair or replace equipment. But it’s not so easy to repair or replace people or body parts.
Square D PBQ4640 Bus Plugs Available at www.swgr.com
Whether it’s an ITE RV366 bus plug or RV364 or Square D PBQ4640 bus plug, any bus plug can have these defects. Many defects are more related to the installation and environment than to the particular manufacturer. The big deal is we know all the things that can go wrong with electrical bus plugs and most of these failures can not be found with a quick visual inspection of an installed bus plug by someone inexperienced, who has never tore one apart, or repaired one after it has broken or failed mechanically or electrically.
Categories: General Bus Plug Information Tags: bus duct, Bus Plug Defects, bus plug disconnect fingers, Bus Plug Safety, disconnect fingers, Electrical Bus Plugs, GE Bus Plugs, Installing Bus Plugs, ITE RV364. Square D PBQ4640, ITE RV366, Operating a Bus Plug, reconditioned bus plugs, square d bus plugs, Westinghouse Bus Plugs
Bus Plug Square D PKA36200
If you read the recent information on Facebook beating Myspace by managing in “white space,” rather than in a formal business management environment, you have a good idea how MIDWEST makes many decisions to improve its web site for our customers. We make so called guesses based on conversations and suggestions from our customers. They tell us what they like. And in doing so, they are the white space between all the seasoned directives we get from the marketing professionals. The ‘world wide web’ is still exciting uncharted territory. There are not many years of prior art.
In response to customer white space chatter, MIDWEST set up a web site specifically directed at those looking for buyers of bus plugs. Hence, the domain name www.busplugsbuyer.com. You see here the results of white space management. This specific target site makes it easier for those that have bus plugs to sell to find us in general. Of course, they could find MIDWEST specifically if they already knew we existed. But, for those that don’t know who MIDWEST is, they might make a general search for buyers of bus plugs. Then go from the general to the more specific. Specifically, whether a GE General Electric bus plugs, Square D bus plugs, Cutler Hammer bus plugs, ITE Bus Plugs, or Federal Pacific bus plugs, it doesn’t make a difference. According to our customers, they would first search for a bus plug buyer and then go from there. This is all very simple from the seller’s point of view.
Square D PQ3206 Bus Plug
It is not unusual for MIDWEST to get a call because a company is having numerous problems with their old bus plugs. Things go along okay for years and then one year they have one failure after another. It seems to make no difference who the manufacturer is. They could be old Square D bus plugs, GE General Electric bus plugs, Westinghouse bus plugs, Cutler Hammer bus plugs or ITE bus plugs. The problem seems not to care who the manufacturer is. When this pattern appears, it is usually because a chronic mechanical or environmental problem has been present for many years and has been getting progressively worse. Soon or later the mechanical problem or contaminate reaches a critical stage and the bus plugs collectively start to fail. Usually the failure seems to be caused by overheating, or by mechanical failure between the bus duct and bus plugs, or by moisture. The problem isn’t just moisture or dirt. It’s the accumulation of dirt over many years or the presence of moisture over many years. This means there is a chronic condition causing you to replace bus plugs. One typically doesn’t have to suddenly replace Square D bus plugs or replace Cutler Hammer bus plugs because of normal operating conditions. And replacing Westinghouse bus plugs one after the other without addressing the root cause, will not make the problem go away. So if you find yourself having to repair or replace numerous bus plugs, look for a chronic cause. If you just don’t find something, then look for a recent acute change that would affect all the bus plugs.
