Handling challenging tasks up to 690 V under rough ambient conditions.

Your benefits at
a glance

  • Touch panel with uniform GRIDCON® ACF operating software
  • CCU (Control Computer Unit) for up to six power modules (IPU)
  • Modular concept: up to four independent power modules (IPUs) per cabinet
  • Extension option for additional 125 A power unit (IPU)
  • IPU IGBT power unit with autonomous control and selfmonitoring
  • Adjustable control transformer combined with a wide range DC supply allows for use in low-voltage grids worldwide

Product description

GRIDCON® ACF Industrial version is the number one choice for challenging compensation tasks where reliability and safety are needed, for example, even beyond normal operating voltages and under challenging ambient conditions:

  • Operation up to 690 V and higher at full power without derating
  • Rated current can be extended in a modular manner from 125 A to 3,000 A, e.g. for STATCOM systems
  • High power density and compact design
  • Low losses
  • Very durable film capacitors
  • Overvoltage category III up to 1000 V – even in grids with isolated neutral point (IT network configuration)
  • Degree of protection up to IP 54 possible, optional external water cooling for complete encapsulation
  • Dynamic compensation of reactive power, harmonics, and flicker, as well as load balancing in one unit

Its very special plus points make GRIDCON® ACF Industrial version the number one choice in many Areas:

  • Production lines, e.g. automotive
  • Mining
  • Chemical industry
  • Larger printing plants
  • Cranes and transport systems
  • Offshore platforms and ships
  • Oil and gas
  • Paper industry
  • Steel processing
  • Water treatment and pump stations


Technical Data

Nominal voltage 400 V (maximum 480 V) +10% 690 V (max. 800 V) +10%
Nominal frequency 50 Hz / 60 Hz
Peak current 2 x rated current
Connection 3-phase + PE, neutral conductor connection not required (network topology: TN, TT, IT)
Compensation 3-wire operation: Outer conductors balanced and unbalanced (positive and negative sequence)
Filter function
1st .. 51st harmonic (50 Hz) // 1st .. 41st harmonic (60 Hz)
All harmonics can be filtered simultaneously
Additional functions Dynamic reactive power compensation
Active and reactive power balancing (up to 100% of rated current)
Voltage stabilization via Q(U)-control
Flicker compensation
Power losses < 2,5% of compensation power maximum,
< 2,2% in typical operation, < 0,4% when idle, < 100 W in standby
< 2,1% of compensation power maximum,
< 1,8% in typical operation < 0,4% when idle, < 100 W in standby
Switching frequency 10 kHz (low-loss version)
Control Internal control computer with two digital signal processors
Device setup and display Via touch panel with graphic display or internal web server (TCP/IP) and PC – No additional software required
Response time << 1 ms
Interfaces Ethernet (TCP/IP)
Various field buses via optional Anybus modules (e.g. Profibus, Modbus)
4 x digital output (isolated, parameterized) for status messages
4 x digital input (24 VDC, parameterized) for external control and parameter set selection
Current transformer Either 2-phase or 3-phase current measurement, xx/5 A or xx/1 A (parameterized)
Current transformers are not included, 15 VA, class 1 or better recommended
Inverter 3-Level IGBT with voltage link (DC film capacitors)
Coloring Standard: RAL 7035 light grey (other colors and designs on request)
(approx. W x D x H)
800 x 600 x 2000 mm
800 x 600 x 2200 mm with optional base (needed for main air supply from front or back)
Cooling Standard: Air cooling with speed-controlled fans
Optional: Liquid cooling with connection to external cooling system via heat exchanger unit
IP protection degree Standard: IP20, optional: IP21 .. IP54
Ambient conditions Maximum ambient temperature without derating: 40° C
Recommended ambient temperature for continuous operation: < 25° C
Minimum operating temperature: 0° C, relative humidity: maximum 95%
Transport / storage: -20° C .. 70° C
Number of modules 1 2 3 4 1 2 3 4
Compensation power 87 kvar 174 kvar 261 kvar 348 kvar 150 kvar 300 kvar 450 kvar 600 kvar
Rated current 125 A 250 A 375 A 500 A 125 A 250 A 375 A 500 A
Neutral current - - - - - - - -
Weight in kg about 340 about 460 about 580 about 700 about 340 about 460 about 580 about 700
Extendability Up to a maximum of 5 cabinets (1,7 Mvar, 2,5 kA) Up to a maximum of 5 cabinets (3 Mvar, 2,5 kA)
EMC class EN 55011, class A1 (industrial environment)
Standards EN 50178, EN 61439-1, EN 61439-2, EN 61000-6-2, EN 61000-6-4, EN 55011