From 262342dd7eb68d0c6cdd9ef1229b426398e0052c Mon Sep 17 00:00:00 2001 From: Lukas Schnelle <33157020+schnellecom@users.noreply.github.com> Date: Sun, 22 Dec 2024 13:40:30 +0100 Subject: [PATCH 1/2] Correct mA to A conversion in Power-Monitoring-Calibration.md Also rewrite some of the calculation formulas for clarity. --- docs/Power-Monitoring-Calibration.md | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/docs/Power-Monitoring-Calibration.md b/docs/Power-Monitoring-Calibration.md index 00d5016fe5..becfcd7955 100644 --- a/docs/Power-Monitoring-Calibration.md +++ b/docs/Power-Monitoring-Calibration.md @@ -35,16 +35,21 @@ [`VoltageSet `](Commands.md#voltageset) _Replace `` with your standard voltage or with reading on your multi-meter if you have one. Your voltage will vary depending on the electrical standards and your electrical grid_ -3. Verify the **Current** reading by calculating current value (amperage) using this formula: **P(W)/V(V)=I(A)**. Adjust the current offset if needed (in milliAmps (mA=A\*1000)): +3. Verify the **Current** reading by calculating current value (amperage) using this formula: **P(W)/V(V)=I(A)**. Adjust the current offset if needed (in milliAmps ($1000mA=1A$)): [`CurrentSet `](Commands.md#currentset) _Replace `` with your calculated value (in milliAmps)_ `CurrentSet` calculation: - P/V=I - 1000 * Watts/Volts = milliAmperes + $$\frac{Watts}{Volts}=Amps$$ + + and thus + + $$1000 \* \frac{Watts}{Volts} = milliAmps$$ !!! example - 1000*(60.0/235.5) = 254.777 + Consider a power usage of $60W$ at a voltage of $240V$. Then the current in milliAmps can be calculated as + + $$1000 \* \frac{60}{240} = 240.0$$ 4. Confirm the validity of your calibration process checking `Power Factor` from the web UI which should be as close as possible to `1.00`. In theory resistive loads will always provide a power factor of 1.00. If that is not the case, we recommend you repeat the calibration process and make sure everything was done correctly. From 472c145c7e7916f0207cc107ea6964dbc7bc6972 Mon Sep 17 00:00:00 2001 From: Lukas Schnelle <33157020+schnellecom@users.noreply.github.com> Date: Mon, 23 Dec 2024 11:01:07 +0100 Subject: [PATCH 2/2] Update Power-Monitoring-Calibration.md Fix the error I added in the example --- docs/Power-Monitoring-Calibration.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/docs/Power-Monitoring-Calibration.md b/docs/Power-Monitoring-Calibration.md index becfcd7955..5b251745ca 100644 --- a/docs/Power-Monitoring-Calibration.md +++ b/docs/Power-Monitoring-Calibration.md @@ -49,7 +49,7 @@ !!! example Consider a power usage of $60W$ at a voltage of $240V$. Then the current in milliAmps can be calculated as - $$1000 \* \frac{60}{240} = 240.0$$ + $$1000 \* \frac{60}{240} = 250.0$$ 4. Confirm the validity of your calibration process checking `Power Factor` from the web UI which should be as close as possible to `1.00`. In theory resistive loads will always provide a power factor of 1.00. If that is not the case, we recommend you repeat the calibration process and make sure everything was done correctly.