Hi folks,
With respect to switchgear tripping supplies, we can supply these externally via, for example battery backed source.
Do these panels typically have an internal DC distribution bus to distribute the power to each section or do you require to run a cable to each section individually...
Hi all,
Does anyone have experience with implementing ZSI protection schemes on MV distribution networks. My understanding is that a 200ms time margin is usually used between levels however I am not sure where this comes from.
Any thoughts?
AVR
Is it standard practice to place inter-trips on the MV and LV breakers when grading across say 1 2MVA tx feeder? - Assuming a single transformer single bus arrangement (no bus couples or parallel tx feeds).
In such a case, my understanding is that the MV breaker should grade with the largest...
Hi folks,
Can anyone point me in the direction of the temperature rating for 11/20/33kV cable terminations?
Is this 90 degrees as per the cable conductor?
AVR
Hello there,
I was wondering if anyone could help me with my understanding.
If I have a building protected by a lightning protection system with its own electrode, this LPS needs to be bonded back to the Main Earth Bar of the (power) electrical system at a single point.
If this power...
