Three phase load:
For a balanced wye connected
load only:
P = 1.732 x VL x IL
in your case the load is not balanced so do the loads individually and add them up like magoo2 suggested.
56A x .22kv (phase A) + 42A x .22kv (phase B)+ 40A x .22kv (phase C)
If the load was balanced and the...
Hello all,
I was asked to provide a shunt trip push button on the building exterior instead of a main service switch (knowing that the main distribution panel inside the building has a main breaker). This is asked to save cost since the main service is 3-phase 800A and providing a shunt trip...
I appreciate the responses , it all helped , i just don't understand the logic behind having such system, it just makes thing much more confusing for future upgrades and creates an unbalanced system!
I am designing a project at a building that has 120/240V, 3 PHASE, 400A electric service. I called the electric utility company and confirmed that there is (2) pole mounted transformers on the outside pole to provide open delta 3 phase service to the building(it means the neutral is center...
it is 125kv BIL but if i get bushing or load break connectors and switches rated 25KV that is below my 26.5kv on the primary, it is like getting a disconnet switch rated 240v on a 480v system???
the question remains can i use (bushing,load break connectors, surge arrestors rated at 25kv) knowing that the transformer is 26.5kv Y - 480V Y ?
the next standard rating for the (bushing,load break connectors, surge arrestors) is 35KV
OK, so when equipment are 25kv rated, is this 25kv to ground or line to line voltage? if to ground then i am ok otherwise my line to line voltage is 26.4kv!
I have a pad mounted transformer rated: 750KVA,3 PHASE, Y-Y, 15.24/26.4KV - 277/480V. The rep. is telling me that i can use a class rating of 25KV,125KV BIL instead of 35,150KV BIL for insulation, but i am still not 100% convinced it is 26.4kv on the primary how can i get away with 25kv rated...
Hello Folks,
I am having a debate between using a supply-side bonding jumper or a grounding rod for my main distribution panel. I have an outdoor 4.16-204KV-208/120V, 75KVA pad mounted transformer feeding an outdoor 3 Phase, 225A main panel mounted on a unistrut to feed sports field lighting...
