Stable Power for Precision & Pulsed Loads
GEYA engineers site-specific power quality systems for semiconductor fabs, automotive assembly, crystalline-silicon production, advanced packaging and glass-core substrate manufacturing. SVG, AHF, ASVG and AVC control pulsed loads, harmonics, reactive power and voltage variation to protect sensitive production.
Power Quality on the Production Line
High-end manufacturing stresses the grid in three specific ways. We measure each before recommending hardware.
Pulsed & Impact Loads
Spot welders, presses and lithography draw sharp current pulses that crash the power factor and cause voltage swings across the plant.
Fix · Fast SVGVoltage Dips on Sensitive Tools
Large motor starts and grid faults cause momentary dips that can shut down semiconductor and precision tools in milliseconds.
Fix · Dynamic SVG / AVCHarmonics from Large VFD Populations
Hundreds of VFDs - and the IGBT / phase-controlled rectifiers of crystal-growing furnaces - inject harmonics that distort the waveform, overheat transformers and push THD far past tolerance.
Fix · AHF / ASVG
Fast Reactive + Clean Waveform, Line Never Stops
A GY-SVG-PLUS delivers millisecond reactive support for impact loads such as welders and presses, while a GY-AHF cancels VFD harmonics. Where both occur, a single GY-ASVG handles reactive, harmonic and imbalance together. For sensitive tools, a GY-AVC holds terminal voltage steady through dips.
- GY-SVG-PLUS: <10 ms reactive, neutral-line 3x filtering, EMC Class A
- GY-AHF cancels 2nd-50th harmonics, compensation rate ≥95%
- GY-ASVG: reactive + harmonic + imbalance in one cabinet
- GY-AVC stabilizes voltage for sensitive semiconductor tools
- Crystalline silicon: centralized 1,000–1,200 A filtering + 1,000–2,000 kvar per furnace transformer
Manufacturing Projects
Real GEYA deployments across welding, semiconductor and precision lines, with measured before/after results.
800 kvar SVG for an Automotive Body-Welding Shop
Impact welding loads dragged the power factor down to 0.63. An 800 kvar SVG raised it to 0.917, removing the utility power-factor penalty.
AHF for Semiconductor UPS Voltage Distortion
Tool harmonics pushed UPS output voltage THD to 17%, risking tool shutdown. A high-performance AHF cut it to about 3% on all three phases.
Manufacturing - Common Questions
Engineer-to-engineer answers to help you spec the right device for your line.
My welding / press loads keep tripping breakers - what helps?
Impact loads need fast, dynamic reactive support. A GY-SVG-PLUS responds in under 10 ms and tracks the load continuously - in one automotive body-welding shop an 800 kvar SVG lifted power factor from 0.63 to 0.917 and removed the utility penalty.
Will an SVG or AHF protect my semiconductor tools?
An AHF cleans the harmonics that distort UPS output (a GEYA project cut UPS voltage THD from 17% to about 3%, preventing tool shutdown), while a GY-AVC holds terminal voltage steady through dips. Used together they keep sensitive tools inside their tolerance window.
I have a large VFD population - AHF, SVG or ASVG?
Choose an AHF (GY-AHF) for harmonics alone, an SVG for reactive power and impact loads, and an all-in-one GY-ASVG when harmonics, low power factor and three-phase imbalance occur together - it integrates all three in a single cabinet.
What does a crystalline-silicon (CZ-furnace) plant need?
Mono-crystal pulling furnaces run on IGBT / phase-controlled rectifiers: measured THDi sits at 25–30% with an unusual spectrum (the 7th harmonic often exceeds the 5th), multi-furnace halls stack voltage distortion past 20%, and power factor hovers at just 0.7–0.85. For a typical 2,500–3,150 kVA furnace transformer, GEYA deploys 1,000–1,200 A of centralized filtering plus 1,000–2,000 kvar of reactive compensation with online monitoring - in high-IP builds that shrug off conductive silicon dust.
Explore Other Industries
Different load, different fix. See how GEYA solves power quality across sectors.
Protecting a Production Line?
Send us your single-line diagram and load details - our engineers will model your line and recommend the right SVG, AHF, ASVG or AVC solution.
