Recent content by romanskat

Thanks budt, anywhere i can get the chart ? So, correct me if i understand you wrongly ;we should size the supply line based on the fuel consumption per hour. Then what about for return line? I attach the fuel schematic that we looking into.The fuel tank is about 50metre away , with plinth...

Thanks guys. But Skogsgurra, why is TN-S systems must switch the neutral pole at the same time? Kindly elaborate more on the technical side?

Hi Mates, kindly illustrate the difference between 3 pole circuit breakers with 4 pole. one quite significant difference i aware is on the price between 3pole vs 4 pole based on same rating.Because 3pole cheaper, so we always facing recommendation to use 3 pole rather than 4 pole. Therefore...

Hi mates, Appreciate if anyone can teach me how to size the supply and return line of an diesel generator from its diesel tank. Thanks.

Thanks Jaime, Do you have any literature resources that can share with me in order for me to sell to management . Trying to understand more so that clear and understand the impact to every party including operation guy. :-) Loke

Hi brothers,recently got some recommendation to make the building design to be more "environmental friendly". LEED kind of consideration. Something good but needs more learning. Soon, i come across a power point from authorities which recommending using "TANDUM WIRING" for fluorescent light ...

Thanks Wilson , however how about the UV coil which is placed within the breaker? is impossible to have a fuse protection right? Any brand to be recommended for my application?

The application i'm facing is on a 100A MCCB. Could educate me more on how to figure out the undervoltage coil is an internal type or shunt trip coil type? Thanks.

Thanks Waross! Further more, do i required any backup power source like UPS in order to switch off the breaker when power failure? Kind of confused of how it operation looks like. Thanks again.:-)

Hi Mates, need your advice on this:- I'm now having Distribution board with sensitive load(old machines). When the recovery of up-stream power supply after black out, the incoming breaker of the Distribution board is still on and the surge always damaged our machines. In order to avoid this...

Thanks ScottyUK ! Can you share with me more on the AN/AF things? What is the usage of having Forsed air cooling rating to be 150% of natural cool rating? Shall there be price difference between a transformer with 50%AF rating compare to a transformer with 20%AF rating only? When i specify the...

Hi Buddy, need your guidance on this:- For each transformer, there is 2 rating involved , AN and AF. Lets say AN/AF = 2.0/2.5MVA. Shall there be any difference with the transformer with 2.0/3.0MVA? What is the application difference ? Is there any rule of thumb indicating the AF rating should...

Hi waross,having a doubt to inter-relating air conditioning increase with higher diversity factor.Could further explain? Thanks.

cuky2000 stated that "expensive insulation coordination study to lower the equipment BIL." . Is it the protective relay coordination study? Or actually is some other kind of study? Interested to know more on this. Thanks.