alehman
Electrical
- May 23, 1999
- 2,624
It is well known that an un-bonded ferrous metal sleeve or conduit surrounding a single conductor adds substantially to the inductance of the conductor. Does anyone know of any actual measurements of this effect, and the effect of bonding the sleeve to the conductor?
IEEE 142 (Green Book) mentions the inductance may be increased by a factor of up to 40, but there are no specifics provided, nor references to published data or calculations to substantiate this.
The question pertains specifically to grounding applications, so I'm not as concerned about heating effects.
Thanks,
Alan
Alan
The engineer's first problem in any design situation is to discover what the problem really is. Unk.
IEEE 142 (Green Book) mentions the inductance may be increased by a factor of up to 40, but there are no specifics provided, nor references to published data or calculations to substantiate this.
The question pertains specifically to grounding applications, so I'm not as concerned about heating effects.
Thanks,
Alan
Alan
The engineer's first problem in any design situation is to discover what the problem really is. Unk.