MEC/Multifunction Electricity Controller & Optimizer

Multifunction Electricity Controller system has a stronger ability in restraining the voltage fluctuation and

flickering, effectively compensates the voltage drops with the drop depth and width respectively below 50% and

within 100ms, and effectively restrains the three-phase imbalance, rendering superior reliability and stability, With

the response time smaller than 3ms it can solve the defects of traditional shunt capacitors and well satisfy the

requirements on the quality improvement of electric energy and energy-saving application of power distribution

network.

Our Solutions

1. Advanced Static var generator
2. APF+SVG

ZDDQ MEC Products

1. Adanced static var generator
2. Low voltage static var generator and active power filter system

Advanced Static Var Generator	static var generator and active harmonic filter system

Advanced SVG

The Advanced Static Var Generator provides the same dynamic performance as the SVG with the added benefit of combining harmonic mitigation. Available in 50/100/150,kVar wall mount and 100/150kVar cabinet mount modules, 400/480/690VAC three phase

Extend your Power Factor Correction Performance

The requirement for power factor correction is the number one power quality issue faced by the vast majority of industrial and commercial installations. The second biggest power quality issue is harmonic mitigation.

1. Commercial installations will often have elevated 3rd harmonics owing to single phase non-linear loads such as computer switch mode power supplies, LED lighting, electronics lighting ballasts, inverter heat pumps.
2. Add a computer data centre backed up by UPS containing a six pulse rectifier and 5th, 7th, 11th harmonics can be added into the mix.
3. Variable Speed Drives controlling air handler units within building HVAC systems can further elevate the 5th, 7th, 11th harmonics
4. Industrial installations will often have high levels of variable speed drive loading as automation systems improve efficiencies and productivity. It is no uncommon to see very high levels of current harmonics and voltage harmonic distortion resulting from six pulse VSDs drawing predominantly 5th, 7th 11th harmonics.

Wouldn’t it be great if you could address both power factor correction and harmonic mitigation in one cost effective unit. The Advanced Static Var Generator (ASVG) does just that.

Power Factor Correction And Harmonics Filtering in One Unit

1. Reactive power compensation: Cos ϕ = 1.00
2. Capacitive and Inductive compensation: -1 to +1
3. All the features and benefits of the SVG
4. Mitigation of 3rd, 5th, 7th, 11th harmonic orders
5. Unit capacity can be shared 50/50 between power factor correction and harmonics correction
6. Current imbalance correction can correct for load imbalance across all three phases

The 3rd, 5th, 7th, 11th harmonic orders are the most prevalent in the majority of installations. A correctly sized ASVG can not only correct your displacement power factor to unity but also reduce your harmonics to <5% THDi. Dealing with both results in a near unity true power factor