Recent content by swiminelectricity

MCCB is just the abbrevation of Moulded case circuit breaker.

Does anybody know what percentage of loads in the entire offshore project nomoally?

trans is 2MVA 5.5%impdance.

I am doing a short circuit and load flow study for a system. When I ran the ETAP software, I notoced UPS sytem can cause the voltage rise and it does little contribution to the system short circuit. is it right?

Hi, Folks, I am running ETAP short circuit study (11kv-22KV-6.6KV-0.4KV), I ignored the most equipment impedance values, resulting in much bigger values.It is hard for me to get the data for the existing system. How can model my system in order to get the right data.By the way, S-C value I have...

I am working on a Ups system. I am not sure if ups DC system shouldbe grounded.If needed what kind of grounding system should be used? Thank you.

Hi, I am doing the short circuit study for an offshore project. The platform I am involed in is part of the entire system. There is another similar system about 5Km away from this platform. When I do the system study for this platform. Do I need to take that exsiting platform into...

I am conducting a system study for 6.6KV system. NGR=152 I am trying to figure out current setting of G-F relay. The formula I have is V(L-N)/152,which is 25A. I don't have a lot of experince. Is my calculation right?

Hi, Folks, What does 'alternate line' stand for? Thank you advance.

Does 'all Generators coupled' mean ' they are all in service'? Thank you in advance.

I am doing a short circuit study for Middle East.But there is only ANSI comprehensive study Module available in our SKM software.I tried to change the application to IEC and 50HZ, but there are no related IEC data available in SKM liabrary.Does it really matter if I use the impedance data and...

I am doing a short circuit study for Middle East.But there is only ANSI comprehensive study Module available in our SKM software.I tried to change the application to IEC and 50HZ, but there are no related IEC data available in SKM liabrary.Does it really matter if I use the impedance data and...

I am doing short circuit studies using SKM. My understanding is the values of the positive %R. %X & % zero %R,%X are the same. But I noticed on some projects. Their zero %Z values are slightly different. Can I get the accurate data from Manufactuers? Where I can I get the cable impedance data...

Hi,Folks, I am still working on SKM TCC DWGs. The Multilin Settings remains a mystery to me. On SR-750 setting, it shows: setting1 Inst OC_PU 1.29 O/L PU 2 Ext Inverse 20 On SR469...

Hi, Who knows how to get the information about Gould strawmut FUSE 32R? Thank you in advance.