Active Power Filter

The active power filter integrates dynamic filtering and dynamic compensation. It offers flexible configuration, excellent performance, fast response time, high filtering efficiency, easy installation and operation, simple maintenance, and stable filtering performance unaffected by system parameters. It is one of the ideal solutions for harmonic filtering and reactive power compensation. By adopting a high-performance control chip and fully controllable power electronic devices, and utilizing advanced control theory and full digital control methods, the filter detects load current in real time, quickly extracts the harmonic current components, and generates control instructions based on their magnitude. It then injects compensation current of equal magnitude and opposite phase into the grid in real time, achieving instantaneous harmonic filtering. Simultaneously, it can provide leading or lagging reactive current to improve the power factor and enable dynamic reactive power compensation.

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Product Introduction

Products Characteristics

1.Efficient Harmonic Filtering

Using a high-speed signal processor and dual closed-loop control technology, the filter achieves a dynamic response time of 0.1 ms, ensuring accurate harmonic detection and high filtering efficiency. It can simultaneously filter a wide range of harmonics-from the 2nd to the 50th order. The device includes a comprehensive protection system and intelligent control strategies, automatically monitoring the operational status of each component and adjusting current limits based on temperature to ensure long-term stable operation. At the same time, it avoids resonance with the user's system, maximizing equipment protection and safe operation.

2.Integrated Compensation

In addition to filtering, the system also supports a wide range of reactive power compensation (both inductive and capacitive). It applies an optimized strategy for harmonics and reactive power compensation, enhancing overall power quality management. The filter can also work in conjunction with traditional passive filtering devices, with unique control algorithms ensuring seamless coordination between the two.

3.User-Friendly Operation

The display interface features a new touchscreen design for simple and intuitive operation. It displays real-time parameters such as voltage, current, and harmonics. The menu is flexible, allowing selection of detuned mode, reactive power compensation mode, or combined harmonic and reactive power compensation mode. Users can set the current transformer ratio and polarity, define the target power factor, and adjust output current as needed. Real-time fault logs and event records are also available. No complex grid analysis is required, and the system features simple design and selection, easy installation and operation, and flexible wiring options including top- or bottom-entry feeders. With an optional special transformer, it can be adapted for use in higher-voltage applications.

4.Safe and Reliable Operation

Designed for demanding industrial environments, all components are rigorously selected. Key parts are sourced from internationally renowned manufacturers. The device features four-level electromagnetic compatibility design and comprehensive redundancy protection, ensuring long-term stable and reliable operation.

Products Specification

	ZS APF3(4) -30A/400V	ZS APF3(4) -50A/400V	ZS APF3(4) -75A/400V	ZS APF3(4) -100A/400V
Rated Voltage (V)	360~420
Rated Frequency (Hz)	50/60(automatic frequency sweeping)
Frequency skew	±5%
rated compensation current	30	50	75	100
maximum reactive power output	30	50	75	100
overall efficiency of the equipment	>97%
filtering capacity	THDi<4%
filtering range	2~50 Times
dynamic response time	100μS
complete response time	10ms
noise (dB)	<65
protection level	IP20
overvoltage protection	士10%
Overheat protection	IGBT:70°℃ Other:80℃
Short-circuit protection	have
protective earthing	have
automatic current limiting protection	30	50	75	100

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