HV three-phase pole-mounted fault indicators
HV three-phase pole-mounted fault indicators
(OP)
Thread http://www.eng-tips.com/viewthread.cfm?qid=78415 mentions pole mounted fault indicators are common in Europe for 3 wire systems. Could these be applicable to a 115kV system in the US? We are in a low lightning area, so we do not use a guard wire.
Does anyone know what manufacturers to contact?
Thanks
Does anyone know what manufacturers to contact?
Thanks






RE: HV three-phase pole-mounted fault indicators
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RE: HV three-phase pole-mounted fault indicators
RE: HV three-phase pole-mounted fault indicators
Relays can tell you distance to the fault, but if your lines branch you still might not know where to look.
RE: HV three-phase pole-mounted fault indicators
RE: HV three-phase pole-mounted fault indicators
For overhead lines one technic is to use travel wave fault locator. It can be used on tranmission lines of any voltage. The signal is taken from the CT. Each fault occuring on the line will generate a pulse that will travel in both directions. Providing that a locator is installed at both ends they will trigger at different time. The time difference will give the distance to the fault.
The accuracy is much better that what can be obtained with protection relays.
Best regards
RE: HV three-phase pole-mounted fault indicators
RE: HV three-phase pole-mounted fault indicators
RE: HV three-phase pole-mounted fault indicators
For distribution lines fault locator you can find the right products manufactured by Hathaway (now belonging to QUALITROL). There are two existing products, the TWS and the DSFL. The DSFL will be more appropriate for your apllication.
I am sure that you can find some supplier in the States
Regards
RE: HV three-phase pole-mounted fault indicators
http://www.eosmfg.com/
RE: HV three-phase pole-mounted fault indicators
RE: HV three-phase pole-mounted fault indicators