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Anonymous Poster #1

Glandplate

11/29/2014 5:54 AM

Dear All

In our plant most of the gland plate on the Switchgear is non metallic(fiber)

is it necessary to ground the cable gland since the gland plate is non metallic.

any advise.

Regards
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JRaef
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#1

Re: glandpalte

11/29/2014 2:09 PM

If you have armored or shielded cable then yes, you still ground the cable gland, just not to the gland plate.

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Simon Wan
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#2

Re: Glandplate

12/05/2014 10:13 PM

Most of all the switchgears gland plate are make from non ferrous material as to reduce the induction effects. If it is metal but non ferrous material then it is better to ground it. If it is other material like fibre it is not necessary to ground it.

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7anoter4
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#3

Re: Glandplate

01/01/2015 10:39 AM

In my opinion, at least one end gland has to be insulated in order to avoid circulating currents in the armour. However, the build up induced voltage in single-core armour of three-phase bunch of cables [trefoil or straight] has to be limited.

See IEEE 575 IEEE Guide for the Application of Sheath-Bonding

Methods for Single-Conductor Cables and the Calculation of Induced Voltages and Currents in Cable Sheaths. Appendix D. Calculation of Induced Voltages.

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