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QShield is a cutting-edge static var generator designed to enhance power quality and stability in electrical systems. QShield helps businesses achieve long-term operational excellence. It provides reliable protection against power quality issues, ensuring uninterrupted performance.

Offered in three distinct versions, Core, Aura, and ProAI. QShield can be tailored to fit either a standard or utility enclosure, depending on the specific application requirements.

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Power Quality Issues

Power quality issues often lead to unscheduled downtime, equipment malfunction, and damage, affecting all sectors. Disturbances like interruptions, voltage dips, and harmonic resonance can cause significant business losses, with 30-40% of downtime linked to these problems. In industry, poor power quality can cost up to 4% of annual turnover. Investing in power factor correction and harmonic filtering equipment can offer a strong ROI, depending on utility rates, production costs, and downtime impacts.

Sources and Impact of Power Quality Issues
Today, electrical installations face many power quality issues, with 80% caused by installed equipment such as arc welders, VSDs, and computers. The remaining 20% come from energy providers, with even advanced systems having up to 52 minutes of interruption annually despite 99.99% availability.
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Overcoming Limitations
Power factor correction (PFC) is not a new concept or technology. First identified >100 years ago and legislated for >50 years ago. Power factor correction is the process of improving the efficiency of an electrical system by reducing the amount of reactive (unharnessed) power. Many businesses today rely on traditional PFC devices. PFC technology is tried and tested but is rapidly becoming yesterday's solution. These older devices no longer offer the efficiency, reliability and flexibility required to meet the demands of modern energy management.
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LimitedEfficiency
Fixed outputs and slow switching speeds reduces the overall efficiency. Unable to cope with todays equipment.
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MaintenanceConcerns
The use of mechanical components increases the likelihood of failure. PQ problems such as harmonics reduce the lifespan of the capacitors and increase the likelihood of failure.
InconsistentPerformance
Stepped compensation results in either over or under correction
Introducing
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QShield is our next-gen version of traditional power factor correction. Utilising cutting edge power electronics, the QShield Static VAR Generator (SVG) is an invertor-based technology that is 100% digital and semi conductor controlled.

QShield:Optimized Energy Management
QShield delivers ultrafast reaction times and superior stability, outperforming outdated PFC systems. It uses intelligent controls to monitor and correct power factor, balance phases, and reduce harmonic distortion by up to 20%. Scalable for larger needs, QShield integrates seamlessly with the QLens energy management platform for precise control and cloud connectivity.
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>0.99

Maintains a PF of >0.99 no matter how dynamic the energy demand.

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<50us

Rapid response time of <50us.

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400V

LV solution that creates a stable voltage.

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03 phases

Balances all three phases independently.

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>20%

Corrects total harmonic distortion up to 20%.

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ROI

Attractive ROI in industrial and commercial applications.

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15 years

Easy maintenance and a lifespan of up to 15 years (twice the usual length of time).

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1/3 size

One-third the size of traditional PFC.

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Range
Enclosure Options
Standard

Suitable for commercial & light industrial settings.

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Utility

Designed for more demanding industrial & utility environments.

Provides enhanced durability and long-term reliability in harsh conditions.

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Feature

Power Factor Correction
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Harmonic Filtering
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Unbalance Correction
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Wireless Control
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Qlens Integration
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Power Factor Correction
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Harmonic Filtering
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Unbalance Correction
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Wireless Control
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Qlens Integration
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Ambient Relative Humidity
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Ambient Temperature
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Particle Count Monitoring
VOC, NOx & CO2 Monitoring
Low Frequency Vibration
High Frequency Vibration
AI-Powered Self Optimisation
AI-Powered Predictive Maintenance
Feature
Core
Plus
Pro
Power Factor Correction
Harmonic Filtering
Unbalance Correction
Wireless Control
Qlens Integration
Ambient Relative Humidity
Ambient Temperature
Particle Count Monitoring
VOC, NOx & CO2 Monitoring
Low Frequency Vibration
High Frequency Vibration
AI-Powered Self Optimisation
AI-Powered Predictive Maintenance
Intelligent Performance

Power quality problems are one of the major causes of unscheduled downtime, equipment malfunction and damage. Reliability and consistency of the electrical supply are critical to business of all sectors. When power quality is imperfect due to disturbances such as interruptions, voltage dips or harmonic resonance, your business suffers.

Traditional PFC Performance

Individually fixed outputs and stepped switching.

QShield Performance

Digital and dynamic switching.

WorkingPrinciple

QShield detects and analyses the load in real time and instantaneously outputs the corrective current needed to maintain a PF of 0.99. Using state of the art inverter-based technology, no matter how dynamic the load, a PF of 0.99 can be maintained in both inductive and capacitive environments.

Lagging PF Inductive load
Leading PF Capacitive Load
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Lagging PF Inductive load
Load
SVG Output
Corrected Waveform
Leading PF Capacitive Load
Load
SVG Output
Corrected Waveform
Voltage Current SVG Output
WhyUpdate?

QShield detects and analyses the load in real time and instantaneously outputs the corrective current needed to maintain a PF of 0.99. Using state of the art inverter-based technology, no matter how dynamic the load, a PF of 0.99 can be maintained in both inductive and capacitive environments.

Performance
Traditional PFC
Q-Shield
Operation
Detects load current on 1 of the three phases only.
Detects load current on all three phases. Provides dynamic, stepless compensation to all three phases.
Method of compensation
Switched capacitor banks provide compensation in fixed steps (6.25kVAr, 12.5kVAr, 25kVAr, 50kVAr).
Dynamic compensation which is stepless.
Power Factor Correction
Inductive load correction only in fixed steps. Leads to constant over and under correction.
Corrects simultaneously leading and lagging power factor (inductive or capacitive) from -1 to +1.
Load Balancing
Cannot correct load unbalance.
Individual phase correction.
Harmonics
Capacitors are not tolerant to system harmonics.
SVGs can operate in environments with high system harmonic levels (up to 20% THDV).
Response Time
From 20ms to 40 seconds! This delay coupled with the stepped response means they are always under or over compensating.
Analyses load data and responds in <15ms and a dynamic response time of <50μs. Accurate compensate in near real time.
Size and Space
Systems are generally 20-30% oversized due to stepped output.
The compensation capacity of SVG’s is the same as the installed capacity.
Mounting Arrangements
Large cabinets are required to house the switched capacitor bank infrastructure.
SVG’s are available in both rack mount and wall mount options with a minimal footprint. Units can be scaled in parallel.
Overloading
Possible due to slow response time.
Not possible as current limited to max RMS current.
Maintenance
Continuous maintenance is needed. Typical lifespan of 5-8 years.
Simple maintenance and service life up to 15 years.