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Hi there, I have been tasked to coordinate a project to install a structure to support mineral processing equipment for underground mining operation. However i got stuck in the process when my consultant asked if i want steel or concrete? So by request i am looking for an opinion on which one...

Hi there, My background is electrical. Out of curiousity, why do the refrigeration circuit pipes (outer circumference) freezes ( i.e pipe circumference covered with ice) now and then? Thanks in advance

Hi there, I am looking a manual/help on how to set the P&B Gold relay ( For three phase indution motors), 20 Minute Type MN4A. I am aware that the relay is completely ancient; however we are still using it in our operation. Thanks in advance.

Hi there, I just acquired a Power quality analyzer (PM296 by satec) from someone with no manual and application software. So I was wondering if there is somebody out there who might know how to get hold of them. I tried their websites with no success. Thanks in advance

Hi there, Can anyone aid on how to establish the rating of the transformer with a missing name plate. we are intending to add couple of loads on the transformer, and to our sup rise we discovered that someone removed the nameplate.

Hi there, Can anyone help to shed some light about the so called three phase induction motor energy saver which allegedly can save the energy consumption of the motor by as much as 25%. My employer requested the feasibility study. Pity the claimant doesn’t want to disclose the principle of...

We are in the process of replacing our crusher motors( some AEI 3.3kv, 490 rpm, 150 kW). I wan't to findout a better replacement motor with a good cost efficiency, life span. RYou can also make references for me

Hi there. Recently our PFC bank cables got overloaded and eventually failed. The cables emanate from the 3.3Kv bus bars and terminate at the PFC yard via a duct. The specs of the PFC bank are as follows; Voltage=3.3Kv, PFC bank rating=2.8Mvar and it is required to correct the power factor to...

Hi there Our electricity utility supply us with star delta configured transformer with their star floating (88Kv/3.3Kv). This configuration forces us to use neutral earthing compensator to facilitate the return path for earth fault. The 525V network is derived from 3.3Kv through delta/star...