Zellweger ripple injection plant 22kV
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Uploaded by RODALCO2007 on Oct 18, 2011
Solid state ripple injection plant injecting a test signal in the 22kV CBD network.
Zellweger
Used for load shedding during peak demand periods or frequency sags on the network.
Hotwater systems , streetlights and non - essential loads can be dumped at an instant.
I created this video with the YouTube Video Editor (http://www.youtube.com/editor)
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@RODALCO2007 I think we use three phase supply at 110kV, and we have no autotransformers
The caternary has a portion of 200 meters of unenergised cable, because of the diffrent phases of the frequencies, called neutral area.
this is the official schematic:
elcatel.ro/images/Electrificar
e-2_clip_image001.gif ZN=neutral area, ȘINĂ=rail
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@Trifu22 55 kV two phase supply with open points gives 25 to 27½ kV to the catenary via auto transformers, same as in your country.
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@RODALCO2007 O_O 55kV on railways??
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massive power!
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1. XLPE
2. Reactors are put in some high fault level substations to reduce available fault current
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@911Ravager911 XLPE and some old oil cables for 33 kV
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Two more questions:
1. What kind of high voltage cable do you use in NZ? Oil insulated or XLPE isulated cable?
2. Do you use Arc-Suppression Coils in NZ to limit the current flowing to ground in case of earth fault?
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@911Ravager911 It is interesting to see that Europe uses often multiples of 10 for voltages and the British use multiples of 11.
Our VT's and instrumentation in substations runs at 63½ / 110 Volts 50 Hz
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In germany we use 400 KV and 230 KV for nation wide transmission, 115 KV for mid range transmission, 30 KV local transmission (more commonly in east germany), 20 KV local transmission ( more commonly in west germany), and old 10 KV grids in cities like Berlin etc.
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@peterahjorter
I read it as "zellweger nipple erection" didn't read any further as i had already clicked...
d0d0uk 4 months ago 5
i read the more info but can you make a video telling more about this thx
creedrulz6000 4 months ago 4