I received the following info from the utility company
"Service characteristics for the 600amp service is three (3) phase, 120/208 volt, four (4) wire.
The maximum symmetrical short circuit duty is 27,000 amperes at the secondary terminals of
the 75kva transformer bank."
From the Transformer to Main Distriuption Panel (MDP) is about 100 ft long. The conductor running is (2) Sets of (4 # 350 kcmil + 1 # 2/0 kcmil G in 4" PVC Conduit)
I am trying to determine the fault at the MDP .
Would I use the following formula below using the Eaton Bussman Short Circuit Current Calculation with the values from Table 4. "C Valves for Conductors)
See attach document for your reference.
F = (1.73 * L * Isc)/(C*n*Vll) for three phase fault.
What will the "C" vale be from Table 4?
Also what will the value "n" be given the conductor running below?
"Service characteristics for the 600amp service is three (3) phase, 120/208 volt, four (4) wire.
The maximum symmetrical short circuit duty is 27,000 amperes at the secondary terminals of
the 75kva transformer bank."
From the Transformer to Main Distriuption Panel (MDP) is about 100 ft long. The conductor running is (2) Sets of (4 # 350 kcmil + 1 # 2/0 kcmil G in 4" PVC Conduit)
I am trying to determine the fault at the MDP .
Would I use the following formula below using the Eaton Bussman Short Circuit Current Calculation with the values from Table 4. "C Valves for Conductors)
See attach document for your reference.
F = (1.73 * L * Isc)/(C*n*Vll) for three phase fault.
What will the "C" vale be from Table 4?
Also what will the value "n" be given the conductor running below?
