Dear members,
For the case of supplying power to residential consumers at LV, the model is normally a group of houses connected via relatively small cables (16mm) to a centrally located distribution pillar, this distribution pillar is in turn fed via a much larger supply cable, either part of a...
Hi, the 11kV feed to a factory with about 2 / 2.5 MVA demand is facing low voltage problems (9.6kV) from the utility side - lets forget about them fixing it, or reasons why, but look at how to fix it ourselves.
I have never used one, but assume you could put in a single 11kV/11kV auto tap...
Hi Everyone,
I was wondering about experience using dry type TX where they are used as step up units as part of the generator backup scheme - here you will have the plant load immediately present on the TX's once the generators have started, and they take the full plant load from cold.
I...
Hi, I am looking for a standard or guidance note covering the need for trenches or bund walls to mitigate against oil spilage and fire risk?
The local authority here only have approved designs for substations that are externally facing, in this case I have a client owned substation which is...
I have a 10 house development that we want to have a central meter room, and from then downstream it will be the clients network. The problem I am having is how to provide for a central backup generator but avoid this running through the meters
I also want to ensure that end users (houses)...
Hi All,
I was hoping to get some user experience on power analysers, I have been looking at the Fluke 1735 unit and the more expensive Elspec G4500.
Would appreciate any comments if anyone used either of these?
Thanks
Dear Members,
Please can I ask you to consider a technical query. Say there are generator sets rated at 1250kVA before de-rating. After de-rating they available power on site is: 912.5kVA and 730kW at 0.8 PFC, so for both units this is 1825kVA and 1460kW.
Now currently the plant maximum load...
We have had two (2) new 400/11000 YnD11 step-up transformers, intended to be in parallel operation, that fail primary tests on turns ratio, the test facility are using a Vanguard ATRT-03B tester, and the Results are wildly out.
A - 98, B - 29, C - 18
in addition the instrument says "vector...
