single core AC cables termination
single core AC cables termination
(OP)
We are installing a 160kW VSD in a substation. I notice that contractors have routed the 6 single core flexible cables to the VSD through a steel gland plate. To my knowledge this is a NO NO because of inductance and eddy currents.
any Comments?
PS For such installations what size should the earth cable be? Minimum 50% of main conductor size is my guess?
any Comments?
PS For such installations what size should the earth cable be? Minimum 50% of main conductor size is my guess?





RE: single core AC cables termination
And notwithstanding single conductor cables may enter a ferrous plate if the plate is properly slotted so that each group of three holes is effectively one hole and non-ferrous gland connectors and locknuts are used.. If conducting plates are used at each end of the cable run, provision must be made to interrupt sheath and/or armour currents or the cables must be de-rated.
Note: These are code requirements under the Canadian code. Your codes may differ.
Bill
--------------------
"Why not the best?"
Jimmy Carter