| Brand | ROCKWILL |
| Model NO. | PQactiF Series Active filter |
| Rated voltage | 400V |
| Rated normal current | 40A |
| Mounting type | Wall-mounted |
| Series | PQactiF Series |
Overview
Active filter PQF has been present globally in the market for more than 20 years. It makes installations compliant with prevailing power quality regulations by mitigating harmonic pollution, load unbalance and reactive power demand.
Harmonic filtering
Individual harmonic selection capability and unique filtering efficiency due to three-level inverter and proven control system
PQactiF has an improved capability of filtering up to 25harmonics simultaneously, between the orders H2 to H50.
Reactive power compensation
Stepless reactive power compensation for both inductive and capacitive loads, target settable
PQactiF can perform precise stepless reactive power compensation of both inductive and capacitive loads. The target power factor is programmable from 0.6 (inductive) to 0.6 (capacitive) which makes PQactiF a superior alternative to a conventional capacitor bank. This also allows compensation of loads fed by generators without the risk of overcompensation.
Load balancing
Balancing the load currents to address neutralto-earth voltages and negative impact of voltage unbalance
Load balancing feature is available in both 3-wire and 4-wire systems between phases and between phase and neutral.
This feature helps to improve voltage unbalance on the phases which increases the safety of the installation and allows sensitive loads to operate.
Enhanced communication features
Wi-Fi enabled modules allow users to monitor and set parameters via smartphone or computer
Parameter settings and simple diagnostics can be performed by a web server on a mobile device. The optional user-friendly HMI (called PQoptiM) interface offers direct access to filter control, programming and monitoring with its 7-inch touchscreen.
PQactiF is offered in two differentmodule ratings of 20 A and 40 A.Depending on the application, PQactiF is available in either as a module, a wall-mounted solution or a standalone cabinet.
PQactiF - M - Module
● Modular design: Suitable for OEMs, LV switchgear and drive manufacturers
● Very compact: Can be integrated into a small cubicle, either vertically or horizontally
● Low losses: Reduced losses and built-in forced air cooling
PQactiF - WM - Wall-mounted
● Distributed filtering: For building applications where space restrictions exist
● Easy to install thanks to wall-mounting kit
● Silent solution: <65dBA, perfect solution for installing on office floors
PQactiF - C - Standalone cabinet
● Complete solution: Factory made fully functional tested panel
● Flexibility: Rating can be extended in modular way from 20 A to 400 A in single cabinet
Technology parameters
-
Why Regular Transformer Maintenance Matters: 5 Serious Consequences of Neglecting ItI. Allowable TemperatureWhen a transformer is in operation, its windings and iron core generate copper loss and iron loss. These losses are converted into heat energy, causing the temperature of the transformer's iron core and windings to rise. If the temperature exceeds the allowable value for a long time, the insulation will gradually lose its mechanical elasticity and age.The temperature of each part of the transformer during operation is different: the winding temperature is the highest, folRockwell09/12/2025 -
How to Implement Condition-Based Maintenance for Power Transformers? A Complete 4-Step Process Analysis1. Definition of Condition-Based MaintenanceCondition-based maintenance refers to a maintenance method where decisions on whether and how to perform maintenance are determined based on the real-time operating status and health condition of equipment. It has no fixed maintenance methods or schedules. The prerequisite for condition-based maintenance is the establishment of equipment parameters and the comprehensive analysis of various operational information of the equipment, so as to make reasonaNoah09/12/2025 -
Can't choose a dry-type transformer? Get expert advice – free.Traction Rectifier TransformersRated capacity: 800 to 4400 kVA; Voltage class: 10 kV and 35 kV; Rectifier pulse number: 12-pulse and 24-pulse. Compared with 12-pulse rectifier circuits, 24-pulse rectifier circuits can reduce the harmonic pollution of the power grid by 50%, and no filtering equipment is needed at this location. It is suitable for power supply systems of urban subways and rail transit.Excitation Rectifier TransformersRated capacity: 315 to 3000 × 3 kVA; Voltage class: 10 kV, 13.8Vziman09/12/2025 -
SG10 Series Transformer Overload Protection Solution | Prevent Overheating and Damage, View NowOperating Conditions in National Standard GB 6450-1986Ambient temperature: Maximum ambient temperature: +40°C Daily average maximum temperature: +30°C Annual average maximum temperature: +20°C Minimum temperature: -30°C (outdoor); -5°C (indoor) Horizontal axis: Product load; Vertical axis: Average coil temperature rise in Kelvin (note: not in Celsius).For Class H insulation products, the long-term temperature resistance of insulation materials is stipulated by the state as 180°C. However, the inRockwell09/12/2025 -
High harmonics? Your transformer may be overheating and aging fast.This report is based on the analysis of one-day power quality monitoring data of your company's distribution system. The data shows that there is significant three-phase current harmonic distortion in the system (with a high total harmonic distortion of current, THDi). In accordance with international standards (IEC/IEEE), harmonic currents at this level have posed substantial risks to the safe, reliable, and economical operation of the power supply transformer, mainly manifested in additional hLeon09/12/2025 -
Ultimate Guide to AC Contactor Abnormal Noise: From Electromagnetic Noise to Mechanical Vibration, Accurate Diagnosis and HandlingIn electrical control systems, AC contactors are among the commonly used electrical components, and they are also a common source of various electrical faults. After long-term use—especially in harsh environments with high levels of dust—AC contactors may sometimes emit squeaking or rattling noises after being pulled in and held. The causes of this phenomenon are analyzed as follows.Squeaking Noise After Pull-In and HoldingA fully functional AC contactor makes no noise when energized and pulledFelix Spark09/11/2025
-
Intelligent Operation Solution for 12kV Vacuum Circuit Breakers: Integrating Real-time Monitoring & Lifetime OptimizationⅠ. Equipment Operation & MaintenanceIntelligent Monitoring System IntegrationMulti-parameter Real-time Monitoring: Embedded sensors (temperature, displacement, Hall effect current sensors) track contact temperature rise, mechanical characteristics (opening/closing speed, overtravel), coil current, and partial discharge signals. Data undergoes preprocessing via edge computing prior to cloud upload.Lifetime Prediction Model: Dynamically evaluates remaining lifespan using electrical wear dataRockwill06/10/2025 -
SF6 Circuit Breaker Solutions for Outdoor Installation (Anti-Pollution & Seismic Resistance)I.Core Challenges in Outdoor InstallationIn high-voltage transmission and distribution systems, SF6 circuit breakers are exposed to complex outdoor environments for extended periods, facing the following critical issues:Pollution & Insulation DegradationDust, salt fog, and industrial pollutants in outdoor environments easily adhere to equipment surfaces. In coastal or industrial areas, pollution levels may reach Class IV, resulting in insufficient creepage distance and triggering flashoRockwill05/12/2025 -
12kV Indoor Vacuum Circuit Breaker Southeast Asia Solution: Anti-Corrosion Compact Design12kV Indoor Vacuum Circuit Breaker Southeast Asia Solution: Anti-Corrosion Compact DesignⅠ. Executive SummarySoutheast Asia faces rapidly growing electricity demand alongside environmental challenges including high temperatures, humidity, salt spray corrosion, and grid instability. This solution recommends Solid Insulated Pole-Mounted Vacuum Circuit Breakers (VCB) featuring high reliability, compact design, and smart monitoring. Tailored for tropical climates and industrial scenarios, itRockwill06/10/2025
