I heard in a recent conference that the next edition of IEEE 1584 will not come with any equations? Can anyone confirm if this is the case?
The reasoning is that private industry funding was sought by IEEE & NFPA joint committee to repeat arc testing and make new arc hazard equations. This is...
In a recent discussion with a colleague, we were looking at ways to measure the magnitude of armour current in a numner of parallel single-core HV cables with having to break-in between the armour and the earthed gland.
With the use of flex-CT's (i.e. rogowski coils) below (CT2) and above (CT1)...
I have an industrial client who has suffered a cable failure whereby the screen bond on a single core cable (6.6kV Cu/XLPE) at the end of a short run had a ‘thermal excursion’ burning through the termination kit and cable insulation. Eventually, the protection activated with a phase-earth fault...
I have an MCCB with extensive internal arcing that doesn't make sense.
The breaker supplies a module in a 600V active harmonic filter (module 2 of 4). The prospective fault level is (say) 25kA @ 600V but there has been no fault that we can see. The breaker is a modern european design, 400A MCCB...
Hi All,
I have a client who has been advised to replace some 33kV air-cored reactors that are part of a high-pass filter (L/R-C) on the basis that the measured inductance was significantly less than the design value (<1/4). The filters have been out of service for several years and are being...
What standalone software packages are available to assess the performance of buried earth grids with respect to touch & step potentials? I am aware of SES C-DEGS, but would be interested to hear from anyone who actually uses this calibre of software on a regular basis.
I am keen to find a...
