All Questions
Tagged with energy current-measurement
13
questions
1
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0
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124
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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
1
answer
88
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Possible problems of AC energy metering using rectified waveforms
I'm building an energy metering circuit with discrete parts and precision is not a big deal in this case. One friend had the idea of rectifying both the voltage and current waveforms before sampling ...
0
votes
1
answer
249
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What does it mean by "in the range of 1000:1" for an accuracy of 0.2 in energy metering?
Most of the time whenever I come across electricity metering or CTs, there is always a term like an accuracy class e.g. 0.2, 0.5, 1, 2, etc. I have an idea about what this accuracy class means.
But ...
- 87
0
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1
answer
1k
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Calculating Energy Consumption Using a Current Sensor and Voltage Sensor
I'm creating a PCBA that uses a hall-effect sensor to measure current and a transformer rectifier design to measure the mains voltage. The voltage is 110-240 V, ~60 Hz. I wrote a digital filter and ...
- 80
0
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1
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509
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Electricity Energy/Power measure with Different power factor
I am designing a circuit that measures the energy consumed from 50Hz AC supply (error must be < 1%), by measuring the voltage through potential divider; and current from shunt resistor. Then these ...
- 477
0
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2
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5k
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Can I use a current transformer to measure voltage and current?
I am trying to make a very basic energy meter that is basically an Arduino (a random microcontroller) attached to a Current Transformer (CT) that I can clamp around an electric cable in an electric ...
- 471
1
vote
1
answer
845
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ADE7953 smart energy metering - how to connect it
I am currently looking for a IC that would allow me to aggregate energy metering data in my house. I came upon ADE7953 chip from Analog Devices but there is no info how to connect it with power source ...
- 111
0
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1
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239
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Measuring Active power through current sensors
i want to measure the AC current - with 220 V AC 50 HZ at home -
i will use a current sensor then find the power factor through comparing the signals of the V and I then find the power then i ...
- 205
0
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1
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849
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Measure current of multiple loads with one sensor?
I have been doing some research for my project which requires to measure power consumption of 8 different loads. For that I plan to measure current in each line and multiply that with the voltage of ...
- 222
3
votes
2
answers
4k
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What's the most economical way to digitally measure 240V mains voltage, current and power factor?
I'm looking to capture and analyse measurements of the mains energy that I use per circuit.
I've found a few consumer products that offer powerpoint energy monitoring such as the Kill-A-Watt, but PC ...
- 227
3
votes
1
answer
1k
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using a multiplexer for a high dynamic range current sensing
I am working on a project in which I am supposed to do current measurements for a sensor node.
the range of the current varies from 0-30 mA
the sensor node has two modes:
1. active mode (maximum ...
- 490
4
votes
2
answers
4k
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How do I design a current transformer?
I want to make a Current transformer using toroidal ferrites to measure 220/50-60Hz AC current(40A max). Is it possible? And how can I calculate secondary turns count?
Ferrite properties:
H = 2000, ...
- 165
7
votes
6
answers
2k
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how do energy consumption (Ah, kWh) meters work?
How do devices which measure energy consumed work? For example the ones in solar regulators/chargers which display how many Ah went into the battery and how many went out?
Do they just measure the ...
- 2,015