Monitoring MV/ LV Ungrounded Systems
Monitoring MV/ LV Ungrounded Systems
(OP)
Hi all,
Just a quick question!
Is it a code violation (NEC,National Electrical Safety Code or CEC etc.) to build and opearte a MV or a LV high resistance or an ungrounded elctrical power distribution system without at least a monitoring method or an alarm system to detect and indicate possible phase to ground faults?
If so, can any memebr kindly mention the relevant clause number?
Thanks!
Kiribanda
Just a quick question!
Is it a code violation (NEC,National Electrical Safety Code or CEC etc.) to build and opearte a MV or a LV high resistance or an ungrounded elctrical power distribution system without at least a monitoring method or an alarm system to detect and indicate possible phase to ground faults?
If so, can any memebr kindly mention the relevant clause number?
Thanks!
Kiribanda






RE: Monitoring MV/ LV Ungrounded Systems
(1) The conditions of maintenance and supervision ensure that only qualified persons service the installation.
(2) Continuity of power is required.
(3) Ground detectors are installed on the system
(4) Line-to-neutral loads are not served."
part (3) requires it.