All Questions
137
questions
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vote
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124
views
Whats the meaning of Im, Is and Ih
I would like to know what's the meaning for the abbreviations of Im, Is and Ih in leakage currents measurements, as it is depicted in these graphis. Could anyone help me?.
The link of the source is: ...
0
votes
0
answers
38
views
Why does the valve symbol have a Clase symbol,or short-circyit symbol before the earth [duplicate]
Could anyone explain to me why the valve symbol have a shortcircuit symbol or termination symbol before the earth???
2
votes
1
answer
105
views
Meaning of this power system line diagram symbol
Please explain to me what this symbol means, in single line diagram?
Source of image: My project diagram.
Here is another example I found:
Here is a magnified part, showing the symbol:
Source of ...
0
votes
1
answer
113
views
Parts of a power cable
This is a snippet of 6kV/Single core/240 sqmm copper cable. The parts of the cable are as follows.
Stranded Copper
Semiconducting Cross-linked compound
XLPE
Semiconducting Cross-linked compound
...
- 545
1
vote
1
answer
83
views
Electric potential - 2 power supplies
I'm studying among other things electrical engineering and I'm kind of in a discussion with a colleague about an 'experiment': he claims that when i measure the voltage between the + output of power ...
- 149
0
votes
1
answer
63
views
Time bounds for power and energy in RL and RC circuits (natural response)
I am curious about how the time bounds in power (t>=0+) and energy (t>=0) are developed in the natural response of RL and RC circuits. For the RL circuit, the natural response of the current is $...
- 21
0
votes
1
answer
97
views
Exceeding max RPM of wind turbine [closed]
I have a wind turbine that reaches its max output power at 1000 RPM, and I want to know if there's any problem if I make it go faster than that (e.g. around 1250 RPM).
I have a TESUP Yuzo. You can ...
0
votes
1
answer
175
views
ADE7953 voltage input
I am currently designing a power measuring board that incorporates ADE7953 and ESP-32 microcontroller, however although i have read the Datasheet document for ADE7953 and searched online forums I am ...
- 103
0
votes
0
answers
110
views
Getting Energy values from the Allegro ACS37800
I am currently using the Allegro ACS37800 IC to monitor power, from what I found on the datasheets and from the internet this IC is capable of calculating the voltage, current, and power. I actually ...
- 1
3
votes
4
answers
3k
views
Power consumption based on voltage and current
I'm a little confused of which value of the voltage to consider for calculating the power consumption.
Here is the scenario of my voltage and current drawn over a period of time.
Vmax = 100 V
...
- 33
2
votes
2
answers
93
views
Power and energy of pumped hydro versus grid scale batteries
A company is proposing a pumped hydro system where they state on their website as “capable of producing up to 335 MW of electricity with around 8 hours storage”.
The same company is proposing a ...
- 21
2
votes
1
answer
568
views
Power and energy calculation of square (or rectangular) wave signals
I have to calculate the power of my square (actually rectangular :D) wave signal, and then the energy of it. I have amplitude, current, duty cycle, and frequency parameters.
For example:
Amplitude: 2....
0
votes
0
answers
33
views
Microwave oven approximate efficiency [duplicate]
I just made popcorn in the microwave and I wonder how much energy my popcorn absorbed and how much energy was consumed by oven. It was 90g of corn and butter (kind of...) and it needed 800W for 3 ...
- 6,024
0
votes
1
answer
189
views
Big differences between AC and DC measurements
I am conducting some electricity measurements with Tinkerforge. To be more precise, I am measuring the energy consumption of a RPi 4, and for that I use two Tinkerforge bricklets.
The first one, ...
2
votes
1
answer
323
views
Why does air conditioner power draw fluctuate during the day?
My air conditioner is controlled by a thermostat like most are. When the set temperature is exceeded, the system turns on the air conditioner using the R and Y wires of the controller. As I ...
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