Reactive power controller 3-phase

multicomp F144-3Ph

Reactive power compensation components
multicomp F144 3Ph Perspektive CI neu

The 3-phase reactive power controller multicomp F144-3Ph-xxx-3 is the measuring and control unit for reactive power compensation systems.

The controller is characterized by its automatic operation in 4-quadrant mode (generator mode), i.e. even when feeding back into the utility grid, missing compensation power is easily detected and compensated. This is an essential requirement, particularly in view of the increase in companies’ own generation systems, e.g. biogas or PV systems.

An integrated temperature sensor also monitors the ambient temperature in the compensation system. As soon as this exceeds a certain limit temperature, the fan is automatically activated. In this way, the high-quality reactive power controller reliably ensures high safety standards. Thanks to the 3-phase recording of voltage and current, it is possible not only to carry out conventional three-phase compensation, but also to implement single-phase compensation or even a combination of single-phase and three-phase compensation.

Technical data
  • Recognizing and compensating for the missing compensation power even with regenerative power supply
  • 18 stages for single-phase or three-phase compensation
  • Capacitive and inductive stages switchable
  • Limit value monitoring function to protect capacitors from overvoltages and excessive harmonic loads
  • Integrated temperature measurement input for monitoring the ambient temperature and switching fans
  • Illuminated graphic display 128 x 96 pixels with dimming function
Switching steps
Relay outputs; 250 VA per output; 250 V AC: 50 / 60 Hz:
Power per stage [ kvar ] programmable: 0 to 9999.9 kvar inductive and capacitive
Discharge times programmable: 10 ms to 999.99 sec.
Manual-0-automatic switch | Status display: Standard | Standard
Rotary field / phase assignment programmable: -|Standard (IHaupt)
Switching behavior
Self-optimizing (circular circuit of equal stages): Standard
Special switching functions for Group switching
Switch-off limit for low-load operation: programmable
Monitoring functions
Zero-voltage release: Standard
Overvoltage shutdown Standard
Temperature measurement and monitoring with fan control and emergency shutdown: Standard
Harmonic monitoring with alarm signal and emergency shutdown | additional displays: Standard
Programmable fault messages: Standard
Target cos φ -monitoring; alarm if not reachable: Standard
Switching operation monitoring with display per stage: Standard
Control status display (over/undercompensation): Standard
Special operating mode
Single-phase compensation Standard
Display type: LCD
Languages: de – en / en – cn
Measured variables (RMS values|RMS): U PH-N, U PH-PH, I main, cos φ, f mains,
S-P-Q , S-P-Qtotal, Q total demand, temp.
Operating time display: Standard
Measuring accuracy: 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 scarf actions:
Password protection
By numeric code: Standard
Voltage path: Low voltage; direct measurement:
Medium voltage:
three-phase / single-phase
Current path: Main current transformer:
Intrinsic current transformer:
three-phase / single-phase
Frequency range: 40 or 62 Hz
2. setpoint cos φ2 Automatic switchover in the event of power recovery Standard | Standard
Additional relay outputs | fault signal relay/fan relay: Standard | Standard
RS485 serial interface: eBus, Modbus RTU
Power supply
Operating voltage | frequency | power consumption: 85-265V AC/DC | 5 – 15 VA | 9 W, 50/60 Hz
Housing: Panel mounting, size in mm (HxWxD): 144 x 144 x 60
Panel cut-out, in mm (H x W) 138 x 138
Tablet mit Screenshot


More information (brochures, user manuals, etc.) under download.