Product overview
EL34x3
24
Version: 4.4
• effective power P
• effective voltage U
• effective current I
• apparent power S
• reactive power Q
• power factor cos φ
• harmonic
• phase shift λ
2.3.5
Sign for power measurement
The sign of the active power P and of the power factor cos φ provide about information the direction of the
energy flow. A positive sign indicates the motor mode, a negative sign indicates generator mode.
In addition, the sign of the reactive power Q indicates the direction of the phase shift between current and
voltage. Fig.
Four-quadrant representation of active/reactive power in motor and generator mode
illustrates
this. In motor mode (quadrant I & IV) a positive reactive power indicates an inductive load, a negative
reactive power indicates a capacitive load. In generator mode (quadrant II & III), an inductive acting
generator is indicated by a positive reactive power, a capacitive acting generator by a negative reactive
power.
Fig. 16: Four-quadrant representation of active/reactive power in motor and generator mode
Содержание EL3413-0000
Страница 1: ...Documentation EL34x3 3 phase power measurement terminal 4 4 2019 03 28 Version Date ...
Страница 2: ......
Страница 6: ...Table of contents EL34x3 6 Version 4 4 ...
Страница 47: ...Installation EL34x3 47 Version 4 4 Fig 33 Other installation positions ...
Страница 91: ...Commissioning EL34x3 91 Version 4 4 Fig 88 Incorrect driver settings for the Ethernet port ...
Страница 102: ...Commissioning EL34x3 102 Version 4 4 Fig 107 EtherCAT terminal in the TwinCAT tree left TwinCAT 2 right TwinCAT 3 ...