APF Series of Active Power Filter

Features

LCD touch screen

Color Windows CE system.

Numerical displays: Vrms of all phase voltages; Irms and ITHD of all line currents; Active, reactive and apparent power; Power factor and displacement power factor; Network frequency; Percentage of filter capacity used; Voltage present on the DC bus; Operating hours of the filter fan; Operating hours of the filter system;

Spectrum displays in bar graph and value table: All the line voltages and currents; filter output currents.

Waveform displays: All the line voltages and currents; filter output currents.

Recording faults and event.

Recording logging time during which selected network parameters have been raised and the maximum value set.

Allow setting up programmable warnings and alarms that may be associated with a selection of network parameters.

Personal ID and password can be set up.

DSP Control

The APF's inverter uses IGBT switching based on SVPWM (Space Vector Pulse Width modulation) with a fixed switching frequency.

Protection

APF uses a comprehensive protection technology to provide: Overload protection; short-circuit protection; IGBT module overheated protection (85 ℃); IGBT fault protection; phase loss protection system; synchronization loss protection; DC capacitor overvoltage (850V) and undervoltage (600V) protection; output over-current protection (1.8 times the rated current), etc.

Earthing

yellow-green PE wire connect low-voltage switchgear cabinet with earthing protection with grounding resistance of less than 0.01 Ω throughout the entire device.

Bus Bar and wires

Bus Bar and main circuit wires allow to carry currents 1.5 times the maximum working current.

Bus Bar connections are tight and neat. Electrochemical anti-corrosion components are used for the Bus Bar connector, ensuring no deformation of Bus Bar under sustained pressure.

Effect of Use

Improve power quality of grid and nominal output of electrical equipment.

Improve the starting performance of motor.

Lower loss of transformer and loss of line.

Lower the apparent power, raise the load capacity of transformer, prolong the service life of eletric control circuit.

Lower current and voltage distortion.

improve 3 phases inbalance.

Keywords: APF low voltage inverter avtive filter 3 phase 3 wire 4 wire compensation IGBT

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