I posted this few days back but received no reply in the forum. Trying my luck again....
Spec. of one of the projects I am working requires that "Armour of all single core AC power cables shall be grounded at one end only”. I understand it is to do with circulating current but can't visualize real problems for power cables if laid in trifoil formation.
The project comprises of 6kV and 400V system and both systems are high resistance grounded.
Does anybody have any similar experience of armor grounding?
Spec. of one of the projects I am working requires that "Armour of all single core AC power cables shall be grounded at one end only”. I understand it is to do with circulating current but can't visualize real problems for power cables if laid in trifoil formation.
The project comprises of 6kV and 400V system and both systems are high resistance grounded.
Does anybody have any similar experience of armor grounding?