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OK, thanks for all the replies. I, as an electrician, would rather use RED for stop, and GREEN for go. As a member of a line crew said to me, red should mean stop, stay away because the breaker is energized, while green mean you could approach it because it is de-energized. As a manager of a...

I would like to know what the standard color scheme for the indication of "OPEN / CLOSE" on control panels remote from actual breakers. We currently use white(amber) for indicating that the breaker is CLOSED, and we use green for indicating that the breaker is OPEN. Reason for white(amber) is...

Well, the time has come to be seriously thinking about the steps necessary in shutting down our generation plant. I would like to get any insight you may have had when you participated in a shutdown like this. We have 9 diesel/nat. gas generation units, with the oldest unit a 1939 Fairbanks...

Why use a pump at all? Locate tank in lower level of building, and let gravity flow unload truck to tank.

Need contact info on any Worthington Diesel engine techs. One of our generation engines has developed a fuel problem, and we have extinguished all of our in-house knowledge. Would like to visit with any tech who might have diesel fuel experience on a 1957 Worthington 16 cylinder engine with...

The EPA states in their RICE/NESHAP rules that one can generate, in emergency mode, if there is a voltage deviation of 5%. My question is what amount of energy do you use to get the amount to apply the 5% to? Our incoming power is basically a 69kV supply. It ranges in reality from 68 to...

We have numerous jacketwater pumps at our "emergency only" power generation (diesel engines) plant. One of our operators has suggested replacing the existing packing type of seals for mechanical type. The pumps in question are 50+ year old Allis Chalmers type, with nameplate info: model...

Schweitzer, Siemens, NovaTech all handle SCADA products. You might want to involve an electrical engineer in the design phase, as there are alot of variables that need to be considered. Good luck. Rick Miell

Thanks for the links. I just read an article about this subject in this month's EC & M magazine. There was a link to DOE's CALiPER study. It is pretty interesting. Thanks again. Rick Miell

We are planning a major retrofit of one of our buildings, a public library. The plan is to retrofit all of the 4' fluorescent fixtures with LED type tubes. I would think the tubes used won't require a driver, so the fluorescent ballast will be removed, and line voltage brought to one end of...

I have need for the calculation for determining emissions from a CI diesel generator based on gallons of fuel used. I know how to utilize EPA data in our Title V operating permit for required reports, but my question is more basic than that. Specific: Enterprise engine, 7131 hp, 5125 kw, 16v...

Scottf, the cts were taken down at the same time the meter was taken out of service, by the same crew. This was just done yesterday, so in a few more days we will have enough of a history to see just what the differences are, if any. Thanks again for all the replies. Rick Miell

GT, I believe that it is not a multi-tap type of CT. There was only the 2 terminals for the secondary, marked X1 and X2. Rick Miell

apowerengr... I was posting to scottf when your post came in. Thanks for this info. I take it from what you are saying that it was possible the meter could have shown usage, tho in some reduced percentage of actual load. Thanks for this. Rick Miell

scottf, the line crew that took the cts down are the ones who noticed the connection, and brought it to my attention. The ABB unit has 2 terminals for the secondary conductors, with a stud in between these two terminals. The stud had a rotatable bar that can only rotate when the holding nut is...

jraef, the metering has been working, with no estimation happening. As far as how correct it is remains to be seen. Any idea how it could still have been causing a reading in the meter? Rick Miell

In 2004 we built a primary metering station on a pole for a newly built RO plant. Recently we retired this setup, to install smaller CTs. The orginal cts (ABB KON-11, 100:5), when opened on the ground, were each shown to have the 2 secondary terminals shorted together, with the factory link...

I need a little guidance on a project I want to complete for our ageing light plant. Right now the generator section, as well as the circuit feeders out of our light plant have panel indicators on breakers and controls as follows: Breaker ON, amber light, breaker OFF, green light with a 2nd...

I am looking for any articles, standards or links for information on developing a utility pole identification scheme, for a small electric utilty. any help? thanks Rick

I just got done looking at the thread238-155020 about AIC ratings and utility transformers. I work for a utility, and the lead lineman asked me a question that I was not able to answer. Is the short-circuit current for transformers available only from the manufacturer, or is there an online...