What different ways are there to reduce downtime of a facility 3phase?
I'm using a program called CEMAP, which is a program formulas that can calculate electrical circuits. The problem is that my time off from my sky is higher circuit is 16 seconds! Installation is for a new shop, cafe and about 165m away from the new greenhouse PME 200A 3 phase supply. The power cable is to be executed network from a closet in the new page up in four main SWA 95mm, and the use of armor as a CPC. This feeds the main board 6way DB that feeds on a more DB together in April 1912 (first flagship store and cafe circuit, second for mechanical services, third for outdoor lighting, green house 4th). What different options are open for me to reduce timeouts? Pauline Hello, today is a source of air phase only. The local distributor is bringing an additional cable to be 3phase. The best option to install eath near my DB rods together? And perhaps a plate grounding in the foundations of the building?
"I have right here: The electricity supply company: 3ph, 200A I will assume the level of failure is currently 3ph 13ka Your new way of 6 dB is powered by of a tomb? 165m, 95m 4C My estimate is that the current 3ph fault at that point is 5.6KA Then say The farther supply of this DB is 30 meters away, 100A, 4C Cu XLPE / SWA? Gives an error of 2.5 mm and a current 5.4KA end of the distributor usually supply is 3-phase fuse for this type of supply. If you look at the fuse the ISS, these rules will do well in five seconds due to the higher fault currents. This seems more feasible to me that 16 seconds! What levels of fault is taking to the supply at the point of delivery? The local utility company will tell you what should be (they do not say exactly but I say that as a minimum) (For example, a work I did in Falmouth, Western Power said 25kA fault current). You can add more to your system ground but you have to check it is well with the distribution company to do this - that adding additional grounding in the end can affect the time of its disconnection. Or you can return to first principles and check the calculation software - using the cable impedance to produce the fault currents at each point of your system and local levels blame distributors
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