Underhung 220 kV surge arrestors
Underhung 220 kV surge arrestors
(OP)
Rarely to see, but it seems necessary in a tight substation to install surge arestors under gantry beam, is there any special requirements for that?
Does it need any special manufacturing or just to be mounted in inverted vertical position?
The center phase may have a longer grounding wire with one 90 degree bend.
Does it need any special manufacturing or just to be mounted in inverted vertical position?
The center phase may have a longer grounding wire with one 90 degree bend.






RE: Underhung 220 kV surge arrestors
RE: Underhung 220 kV surge arrestors
These SAs were porcelain or silicone polymer housed?
RE: Underhung 220 kV surge arrestors
Regards
Marmite
RE: Underhung 220 kV surge arrestors
RE: Underhung 220 kV surge arrestors
I think the utility will require an insulated conductor down to ground grid but what if the gantry frame is used as a down conductor? I doubt the inductance and reistance won't be predictable compared with a physical lead.