Happier, yes. . .but can find out if it would make you happy.
Happier, yes. . .but can find out if it would make you happy.
The capacitive reactance of .09 microfarad would be the reciprocal of two times pi times the hertz times .09 divided into one million or somewhere around twenty nine thousand four hundred seventy three ohms. Now divide this into 120 volts and we have 4 milliamps and just under the allowable trip limit.
Boy we sure made a big jump here from a MOV to the power company’s grid and the harmonics found on that grid.You are not taking harmonic noise into account. The power line voltage waveform is not a sine wave and the extra frequency's add to the current.
Once again not on the circuits in our homes. The TWACS system is a software system that was designed by Distribution Control Systems, Inc. (DCSI), a subsidiary of ESCO Technologies Inc. and is mostly used as a load control program to ensure the end customer always has power.And then there is the long range power utility communication systems. These can add quite a bit of noise spikes. The worst is the DCSI TWACS system (90 amp pulses at the house), then there is the cannon EMETCON(9Khz to 12Khs) and the L&G TS2 system(560Hz).
Again Brother Bill the amount of current on the primary lines of the utility company in no way affects the current on a 120 volt branch circuit that is protected by a GFCI device in our homes. The harmonics on the utility primary power lines does not enter our homes either. These harmonics are lost at the step down transformer that supplies our homes.All these can add quite a bit of current and that is why the Capacitor & diode power supplys have a series resistor to limit the current from higher frequencys.
Boy we sure made a big jump here from a MOV to the power company’s grid and the harmonics found on that grid.
1. When you draw currents from a outlet that WILL affect the voltage since the transformer has both resistance and inductance. The higher the frequency the less current you need to change the voltage. At 10Khz it does not take much current to change the voltage.
2. the DCSI TWACS system includes a AMR(Automatic meter reader) component and that meas that it includes a module that mounts inside the house electric meter. That unit uses a Triac to pull 90 amps just before the zero crossing. These pulses of current can cause problems and is part of the reason the AMR part of the system has been banned from some states.
3. There is a "voltage noise test" that units have to pass and that is probably why the 0.09 uF value was stated. It's not that 0.09 uF will trip a GFCI, but that it MIGHT trip a GFCI.
This is awkward, but...
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