CR4 - Electrical Engineering
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Discussion on Sensors and switches, power generation and distribution, test and measurement, alternative and renewable energy sources, etc.
CR4 - Electrical Engineering
2y ago
Just got a 10ADC Current Transformer which I would like to reduce down to 2ADC Current Transformer or thereabouts. If I put another winding through the current transformer I would reduce the ratting to 5ADC. And then if I put an additional winding through the current transformer the ratting would b ..read more
CR4 - Electrical Engineering
2y ago
So, there's a project that an acquaintance is managing, requiring an overhead power line to supply power from the utility of ~1km in length, at (I think) 88kV or 66kV, thereabouts. Whilst the power line costs are apparently as expected, there are other services and infrastructure that must be moved ..read more
CR4 - Electrical Engineering
2y ago
Hi everyone , should there be a backup fuse for Q0.1-SPD and what size? Schematic is attached ..read more
CR4 - Electrical Engineering
2y ago
Hi Folks I have a monitor that went dark and discovered the the PC board was not outputting enough for the LED strips for the back lighting. I am searching for what type of external driver I can use to power these. This is the part number 06-32C2X6-618-M08W14 There are 2 strips 24" long. 6 LEDs p ..read more
CR4 - Electrical Engineering
2y ago
I need an on line training to be certified as electrical inspector in oil and gas companies. kindly if you know program replay me. thanks a lot ..read more
CR4 - Electrical Engineering
2y ago
Dear sirs, Can somebody please tell me where is 'medium voltage interrupters with gis is used'. What are its advantages for its application in generator circuit breaker? regard ..read more
CR4 - Electrical Engineering
2y ago
Hello everyone! I have problem with ammeter switch from attachment. Here is connection diagram, and everything looks fine. But, if we look carefully, we will see that ground and L3 are short connected via 3-4 terminals, when we put switch in L1 position. So, my question is, how it's possible, it loo ..read more
CR4 - Electrical Engineering
2y ago
Hello Everyone - (Not sure if this is the correct Forum) I've got a question that I've researched but so far have been unable to get a definitive answer to. It 'seems' LED lighting creates darker shadows compared to incandescent lighting. I tested this in my shop by installing various temp LED ligh ..read more
CR4 - Electrical Engineering
2y ago
Dear all in standard how much time can motor withstand if it is draw current exceeded the full load thanks ..read more
CR4 - Electrical Engineering
2y ago
Dear all in standard how much time can motor withstand if it is draw current exceeded the full load thanks ..read more