Bonding of Single Condutor Armoured Cables
Bonding of Single Condutor Armoured Cables
(OP)
I have a 4160V, 3-phase system with 3 single conductor armoured cables installed to feed a unit sub. They are installed at 4160V and pull about 200A maximum. I have been told that the armour is not bonded at either end.
If this is the case wouldn't the armour have an induced voltage very close to 4160V?
I have my doubts that this was checked out properly and I think that the cable armour is bonded at both ends to reduce this induced voltage, bonding at both end has a different problem as this would allow the flow of current in the armour.
Thanks
If this is the case wouldn't the armour have an induced voltage very close to 4160V?
I have my doubts that this was checked out properly and I think that the cable armour is bonded at both ends to reduce this induced voltage, bonding at both end has a different problem as this would allow the flow of current in the armour.
Thanks






RE: Bonding of Single Condutor Armoured Cables
The voltage induced by the current in a single point bonded armor is different from the electrostatically induced voltage; it depends on the current in the conductor, not the voltage.
RE: Bonding of Single Condutor Armoured Cables
If this is the case would the armour not have an induced voltage, possibly quite high?
The the historical current in the cable is about 200A but it is sized to be able to fully load two 1.5MVA transformers (4160/600V)
RE: Bonding of Single Condutor Armoured Cables
RE: Bonding of Single Condutor Armoured Cables
RE: Bonding of Single Condutor Armoured Cables
RE: Bonding of Single Condutor Armoured Cables