30
2.
Installation and wiring
2.3 Wiring for power and monitored voltage input (continued)
Wire the device according to the phase and wire type as shown in the following diagram.
Install a branch circuit breaker between the wiring for each of R/S/T/N, L/N and R/N/T so that the power can be
turned off immediately.
Important
• For safety purposes, turn off the mains power and set the branch circuit breaker to off to ensure there is
no power supply while you are working.
• Wire correctly so the phase sequence is correct. You will be unable to measure the power and energy
correctly if you fail to do so.
• For the wiring for the power and measured voltage, use 24 to 14 AWG (cross section surface area of 0.2
to 2.0mm
2
) electrical wire and ring or U-shaped crimp connectors suitable for 3.5mm screws.
• The recommended torque for screwing the 3.5mm screws is 0.8Nm. Make sure the crimping terminal is
pushed all the way in and tightened firmly. After fixing the wiring in place, pull gently to confirm that the
wiring is fixed firmly.
• During use, make sure the terminal panel cover is closed.
R
S
T
N
N
L
R
N
T
R
S
T
Branch circuit breaker
1-phase 3-wire
(1-phase 2-wire voltage selected, 1-phase 3-wire composite)
3-phase 3-wire
1-phase 2-wire
3-phase 4-wire
Branch circuit breaker
Branch circuit breaker
Branch circuit breaker