I have three-phase power: 3x24A, single phase is 230V. I have 2 electric power circle:
- circle with three-phase: (this came from power company inside)
1.1.: L1 - 16A circuit breaker (B characteristic): refrigerator
1.2.: L2 - 16A circuit breaker (B characteristic): working room with 0-24 on computers
1.3.: L3 - 16A circuit breaker (B characteristic): home automation + internet + other 0-24 on stuff
(The 2. circle connected to parallel to power company’s input at the 1. circle, so the 24A circuit breaker L1 will disconnect only, if 1.1 power usage + 2.1 + 2.2 + 2.3 power usage summary will more than 24A )
- circle with three phase: Can disable with main switch this all of bellow circuit breakers:
2.1.: L1: 16A circuit breaker (B characteristic): lights 1
2.2.: L1: 16A circuit breaker (B characteristic): room sockets 1
2.3.: L1: 16A circuit breaker (B characteristic): HIFI + TV
2.4.: L2: 16A circuit breaker (B characteristic): lights 2
2.5.: L2: 16A circuit breaker (B characteristic): kitchen
2.6.: L2: 16A circuit breaker (B characteristic): room sockets 2
2.7.: L3: 16A circuit breaker (B characteristic): lights 3
2.8.: L3: 20A circuit breaker (C characteristic): air conditioner
I reading this nice article but few things not sure:
Q1.: Because of I have 3 phase, I needed and recommended to use 3, not 1 VT, right? So I should use channel 1, channel 13, channel 14 for VT - for L1, L2, L3 (three phase lines). Or getting 1 VT is enough, and needed to use channel 13 and 14 for 1 times calibration only? So I need 1 or 3 VT for three phase usage?
Q2.: Because of 3 phase and i have 2 circle, i also want to know the overall power usage and the 2. circle power usage, so I need to use 3x2 sensors for that, right? I can use any of free channels for that, or what is the recommendation? channel 2,3,4 for all, and for 2. circle “all” channel 5,6,7? And all with CT 100A? Or any recommendation to use CT 50A?
Q3.: So if needed 3 VT + 3+3 CT, I left only 5 sensor for measure single phase. If I have 16A circuit breaker before I measure, so not possible to use more than 16A, what is the recommended CT type for all single phase measurement? 50A or 100A?
Q4.: So for free 5 sensor slot I can use a single phase metering, like:
sensor 8: kitchen
sensor 9: air conditioner
sensor 10: HIFI + TV
sensor 11: sockets
sensor 12: lights 1
Because of I have in different phases the lights:
I cannot measure with 1 sensor, right?
What is the solution? Add all light to same phase and same circuit breaker?
Recommended CT type for all 5 sensor, if I have only 16A circuit breakers?
If you need a diagram I can make it for be clear.