We tried this idea to verify synchronizing a 15KV 120 MVA generator across an SF6 Breaker. Note: we also did all the usual checks, backfeed etc.
We constructed six metal plates with insulated backs and taped them to the breaker pole frame right next to the insulators on each pole, for each...
I'm trying to fill in a Autoshape in excel based on the result of a calculation.
i.e. if cell B1>0 then fill in autoshape 136 with red.
I am using this code:
Private Sub Worksheet_Calculate()
Dim ThisWS As Worksheet
Set ThisWS = Me
If ThisWS.Range("b1") > 0 Then...
I have a gap in my knowledge about the interaction of brushless exciters and generator field. I have tried to find some text on line and elsewhere to show me the theory about how field current is generated when an exciter is brushless.
Now I know that the AVR field current is applied to the...
Hello all.
What is the purpose of double pulsing a thyristor, as is sometimes seen in a fully controlled three phase converter? The thyristor is already conducting so why fire it again?
Anybody know?
Let's say I have a 1 MW LCI Drive but for some reason I want to drive a small synchronous motor, let's say 50HP.
The LCI drive is designed for an input of 1kV but only 480V is available. For the sake of this scenario assume that I can change undervoltage parameters, maximum current parameters...
Is it possible to take a chart formula based on a trendline and put the formula in a cell(s) so I can use it to calculate Y values for any given X? I would like to be able to separate the individual components of the formula into different cells
For example
y=.6x+50 would be
A1: 0.6
A2: 50
I have imported dynamic data from an external application to an Excel spreadsheet. The data is constantly changing automatically and I want to trend it on a chart.
How can I sample and store this data in a column or row so I can build a chart with it?
Appreciate any ideas that don't...
I've Googled with no luck on this one.
I need to know the ampacity of a carbon brush with the dimensions 25x50x40mm. (40mm long)
Can anybody point me in the right direction? Brush type is CM 5H (and if anybody can explain that designation to me I would appreciate it also)
I have a 2MW LCI VFD that is tripping intermittently on converter overcurrent. I know it’s not a protection circuit problem because there are 2 protection circuits and both circuits pick up the fault. The circuits are independent except that they are sourced by the same CTs (located on the...
I hope you can help me with this one or at least point me in the right direction. I will try to explain it as simply as I can.
I have 2 columns of data that are similar but one has been revised. I want to compare the cells in the 2 columns and report in a 3rd column if the individual cells...
