ZaneMeyers/zmVault
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

vault backup: 2025-11-12 16:49:17

Browse Source
This commit is contained in:
Zane Meyers
2025-11-12 16:49:17 -05:00
parent 712e1ba061
commit 854a770048
11 changed files with 3272 additions and 123 deletions
Download Patch File Download Diff File Expand all files Collapse all files
alternating-current.md
+19 -21
View File
@@ -41,7 +41,7 @@ The voltage measured between any line and neutral is called **phase voltage**.
The formula for active power in a three phase system is given by
$$
P = \sqrt{3} \times V_{L} \times I_{L} \times PF
P = \sqrt{3} \times V_{L} \times I_{L} \times \text{PF}
$$
where:
@@ -49,7 +49,7 @@ where:
* $P$ is the active power,
* $V_{L}​$ is the line voltage,
* $I_{L}$ is the line current,
* $PF$ is the power factor.
* $\text{PF}$ is the power factor.
The formula for apparent power in a three phase system is given by
@@ -65,28 +65,26 @@ where:
### Voltage Systems
208Y/120V
480Y/277V
120/240V 1-Phase 3-Wire:
* 120V 1-Phase 2-Wire # Line to Neutral
* 240V 1-Phase 2-Wire # Line to Line
* 120V 1-Phase 2-Wire --- Line to Neutral
* 240V 1-Phase 2-Wire --- Line to Line
120/208V 3-Phase 4-Wire:
* 120V 1-Phase 2-Wire # Line to Neutral
* 208V 1-Phase 2-Wire # Line to Line
* 208V 3-Phase 3-Wire # Line to Lines
208Y/120V 3-Phase 4-Wire:
* 120V 1-Phase 2-Wire --- Line to Neutral
* 208V 1-Phase 2-Wire --- Line to Line
* 208V 3-Phase 3-Wire --- Line to Lines
277/480V 3-Phase 4-Wire:
* 277V 1-Phase 2-Wire # Line to Neutral
* 480V 1-Phase 2-Wire # Line to Line
* 480V 3-Phase 3-Wire # Line to Lines
480Y/277V 3-Phase 4-Wire:
* 277V 1-Phase 2-Wire --- Line to Neutral
* 480V 1-Phase 2-Wire --- Line to Line
* 480V 3-Phase 3-Wire --- Line to Lines
wiring-configurations:
* 1-Phase 2-Wire # Line to Line (2-Pole) or Line to Neutral (1-Pole)
* 1-Phase 3-Wire # Line to Line and Line to Neutral (2-Pole)
* 3-Phase 3-Wire # Line to Lines (3-Pole)
* 3-Phase 4-Wire # Line to Lines and Line to Neutral (3-Pole)
Wiring Configurations
* 1-Phase 2-Wire --- Line to Line (2-Pole) or Line to Neutral (1-Pole)
* 1-Phase 3-Wire --- Line to Line and Line to Neutral (2-Pole)
* 3-Phase 3-Wire --- Line to Lines (3-Pole)
* 3-Phase 4-Wire --- Line to Lines and Line to Neutral (3-Pole)
## Active and Reactive Power
@@ -120,7 +118,7 @@ derived from these components are others:
is the ratio of active power to apparent power.
$$
P = S \times \text{PF}, \quad S = \frac{P}{\text{PF}}, \quad PF = \frac{P}{\text{S}}
P = S \times \text{PF}, \quad S = \frac{P}{\text{PF}}, \quad \text{PF} = \frac{P}{\text{S}}
$$
### Power Factor Correction