FLUKE NORMA 6004+ User Manual for the Fluke Norma 6004+ Portable Power Analyzer with speed and torque, 4-channel

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Power Analyzers

Operation

3P4W3M

Figure 9. 3P4W3M Wiring

For 3P4W3M wiring, 3 voltage measurement channels are respectively connected between each

phase line and the neutral line. 3 current measurement channels are respectively connected in series

with each phase line or clamped on each phase line with a current sensor.

For systems without neutral lines, connect 3 voltage measurement channels between the 3 phase lines

and the common ground line. For a 3P5W system, you can use a wiring group of 3P4W3M to measure

the phase and neutral line. You can select one channel and configure it as 1P2W1M to measure the

parameters between the neutral and ground line (NORMA 6004/6004+ only). If the ground and neutral

lines do not exist, connect the common ends of the 3 channels together and suspend, and the total

power measured is still valid.

For this wiring system:

1. The wiring system has the same impedance characteristics for 3 phases, a balanced measurement

system can be established.

2. The wiring system has a terminal for neutral or ground, the common mode component input to the

instrument is small, which reduces the effect of common mode components on the measurement

results.

3. The phase voltage is directly measured, and the line voltage is calculated by Δ. It is more suitable

for measuring systems of star connections.

U1 U2 U3

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FLUKE NORMA 6004+ Portable Power Analyzer with speed and torque, 4-channel