multicomp F144-3Ph - reactive power controller

multicomp F144 3Ph, 3-phase-reactive power controller

multicomp F144-3Ph-…-3 reactive power controller

The multicomp F144-3Ph-…-3 reactive power controller automatically works in 4-quadrant operation (generator operation), i.e. even with return feed into the energy supplier network, missing compensation power is detected and compensated without any problem. Through the integrated temperature measurement input, the ambient temperature in the reactive power compensation unit is also monitored, and if a predefined limiting temperature is exceeded, the ventilator is switched on. Through the three-phase recording of voltage and current, not only the usual three-phase compensation is possible, but also single-phase compensation or a combination of single-phase and three-phase compensation.


  • Detecting and compensating the missing compensation power in case of return feed
  • 18 stages for single-phase or three-phase compensation
  • Switching of capacitive and inductive stages
  • Limiting value monitoring function for the protection of capacitors from overvoltages and excessive harmonic load.
  • Integrated temperature measurement input for monitoring the ambient temperature and switching on fans
  • Illuminated graphic display 128 x 96 pixel with dimming function

Technical data

Relay outputs; 250 VA per Output; 250 V AC: 50 / 60 Hz:    
Power per stage [ kvar ] programmable: 0 to 9999,9 kvar inductive or capacitive  
Discharge times programmable: 10 ms to 999,99 Sek.  
Hand-0-automatic switch | status display: Standard | Standard  
Rotary field / phase allocation programmable: -|Standard (Imain)  
Swith performance
Self-optimizing (circuit switching of the same stages): Standard  
Special switching functions for Group switching  
Switch-off limit for light load operation: Programmable  
Monitoring functions
No-voltage trigger: Standard  
Overvoltage switch-off Standard  
Temperature measurement and monitoring with fan control and emergency switch-off: Standard  
Harmonics monitoring with alarm message and emergency switch-off | additional displays: Standard  
Alarm messages programmable Standard  
Target cos φ monitoring; alarm if unaccessible: Standard  
Switching operation monitoring with display per stage: Standard  
Controller status display (over  /undercompensation): Standard  
Special operating mode
Single-phase compensation Standard  
Display type: LCD  
Language: de - en / en - cn  
Measurement parameters (RMS values) U PH-N, U PH-PH , I Main, cos φ, f Net,
S-P-Q , S-P-Qtotal, Q total demand, Temp.
Operating time display: Standard  
Measureing precicion: Voltage | current | power 1% | 1% | 2%  
Update speed:: 20ms  
Single phase measurement (4Q): Phase-zero  
Three-phase measurement 3x Phase - zero  
Long-term memory for switching operations: -  
Password protection
With digit code: Standard  
Voltage path: Low-voltage; direct measurement:
Medium voltage:
Three-phase / single-phase -
Current path: Main current transformer:
Induced current transformer:
Three-phase / single-phase -
Frequency range:   40 or 62 Hz
2. Setpoint cos φ2 Automatic switchover in case of energy recovery: Standard | Standard
Additional relay outputs | error message relay / fan relay: Standard | Standard  
Serial interface RS485: eBus, Modbus RTU  
Power supply
Operating voltage | frequency | power consumption: 85-265V AC/DC | 5 - 15 VA | 9 W, 50/60 Hz  
Switchboard installation, dimensions in mm (H x W x D)
144 x 144 x 60  
Switchboard cutout, in mm (H x W) 138 x 138  



Reducing energy costs by reactive power compensation

"Reducing energy costs by reactive power compensation"

Components for reactive power compensation

KBR-Catalogue - Components for power compensation