2008年3月28日 · Copper development group's suggestion of using non-magnetic material at high magnetic fields seems not correct.Even at currents of 10 KA bus bars, mild steel bolts are not getting heated up.So high tensile mild steel bolts are used in oil filled high current connections eg transformers.In out door applications non corrosive property of ...

2008年12月19日 · lng is the maximum center-line distance between supports along the bus. am is the effective distance between main conductors [between parallel buses] am=a distance between coplanar main conductors center-line for single circular cross-section Bending force on the supports: Fd=Vf*Vr*alpha*Fm3 Vf =ratio of dynamic and static force on supports

2006年10月19日 · I'm not sure there is a code for ductor tests on busbars (perhaps ANSI/NETA ATS, but I've never used it). The contact resistance of busbar joints will depend on the type of joint (bolted, clamped, welded, etc), contact area and pressure, and this will obviously differ across manufacturers.

2005年12月4日 · I was once told that 1" was required between adjacent phase bus bars, and given that I learned that the dielectric strength of air is approx. 3kV/mm (7.62kV/in), 1" is more than enough. But I was just curious about what the …

2011年6月2日 · I am new to ETAP and trying to set up a small example network. It's really small with 3 buses,i.e. one each of slack, PV and Load. The problem I have is with the generator connected to the PV bus. I tried to set to at P=60MW and V=1 p.u. Now V is correct, but P from the generator is always 0. Q is supplied OK.

2025年2月3日 · The system is double busbar type , 3 nos. bus couplers are between bus-1 & Bus-2 and 2- nos. Bus sections at Bus-2 , main bus is Bus-2 and Bus-1 is back up. your expert feedback is required to validate that the proposed solution is meeting the Low impedance zone overlapping requirements and there is not risk of unwanted differential tripping.

2010年9月28日 · However, regardless of if you choose bus bar, bus-bar, or busbar… there is still only one 's'. But, in closing… my American-English spellchecker tries to change 'busbar' to 'bus bar.' And since my Grandfather was Chief of Engineering before my Father was, at the same company… all documented use of the subject was 'bus bar' which is the ...

2017年7月19日 · I'm reviewing a project where there is a 270MVA 161/34.5kv transformer and no main circuit breaker on the 34.5kv bus. (I don't know of any circuit breaker for 34.5kv that is higher than 3000A which is a force air cooled switchgear breaker) The …

2003年6月10日 · jghrist; Very good points. You deserve a star. I do need a little more clarification. In many specifications I have seen that the pull tension and side pressure calculation is not required when the spacing between the manholes is limited to 400 feet when the duct run between the manholes is considered to be straight provided that there is no more than 2x90 …

2003年11月12日 · I would agree with Scotty. The 1336 impact is quite an old series and once the DC Bus caps start drying out, you will get spurious trips etc. your drive will be more susceptible to 'noise' on the network. Light loads mean a higher DC bus voltage and additional distortion will only push the drive to an over-voltage condition.