I am working on a project whereby we shall be providing power from a windfarm to a vessel, so the vessel (if battery) can be charged, or no need to run engines for hotel load when stationary for the night.
The electrical system will be on the wind turbine column (in UK/EU) waters. The vessel...
Yes, i know, its been done millions of times before! So sorry in advance.
So, im overthinking this so doubting myself. Opinions please.....
Cable from X to Y - 5km long. Secondary Voltage 11kV (Primary is 66kV, Z=6%). Power 6MW. System is TN-C. The cable is 3 core and earth. Cable conductor...
Looking for some inf9ormation regarding 3 winding transformers and a question i have.
Looking at a design which requires a 3 winding transformer. 66kV on primary, 11kV on Secondary and 415V on tertiary. The 66/11kV winding is 5MVA to power a specific bit of plant, however the 66kV/0.415...
Im trying to understand the text in IEC 80005
The standard considers that the standard rating cables are 6/10(12)kV. Fine all good
But then the standard considers that the Neutral cables are considered to be 1.8/3(3.6)kV.
Now, if we are using say 10kV, the corresponding neutral voltage for...
Ladies and Gents.
I am looking for some help regarding the function of this circuit (attached).
Its the output of the SID (sound chip) of a commodore 128 computer.
The sound out of the monitor speakers is crackly and faded. I would like to test the output at points along the circuit if i can...
We are getting a new generator, and the manufacturer shall be performing a variety of tests including Transient & Subtransient Reactance test.
I do not have the test method references IEEE std. 115, Sec 11.8 or IEC 34-4, sec. 3 par 7&8.
How do they physically test for these reactances and the...
We are using the ETAP computer modelling for our power system and are calculating the fault levels for the 600VAC busbars which are connected to the main GTG's
My understanding is that the value always used to determine the fault level is the t – 8ms time, which for a 60Hz sytem is the half...
Im currently designing a network, where i would have like to put 3 off 740kW motors with VSD's. This would have been kinder to the network upon start up, but also provide a 'barrier' to stop these motors contributing to any fault which occurs on the network.
However, due to factors outwith my...
I have a 7.5MVA 6.6/13.2KV transformer which we need to place in a Zone 2 area (explosive atmosphere - oil/gas).
Will an oil filled transformer be compliant with the ATEX regulations?
Cheers.
Ive got a three phase power transformer, 2 windings, both windings are 10.8V, 3 phase, 50Hz..... 6.3kVA.
Cant confirm if its a 6 or 12 Pulse rectifier, what it the resultant DC output? Its supposed to be 12 or 24 VDC.... whats the calcs?
Thanks,
Simon
Got a three phase 260kVA Dy11 transformer, powered by a 415Vac input (thyristor stack controller), 400Vac output to a delta resistive load (purely resistive). In theory the elements in the delta limbs should be identical, however in practice the elements arent identical, and im getting an...
