Industrial Tuned Harmonic Filters Present industrial processes place high demands on electric power supply ...    More ...

Industrial Tuned Harmonic Filters
Present industrial processes place high demands on electric power supply quality. The loads on the power system such as rectifiers, variable speed drives, welding machines, converters, and arc furnaces generate harmonic currents. The problems might occur due to extreme harmonic currents.

• Voltage fluctuations and interruptions
  
• Overloading and failure of unturned capacitors
  
• Damage or malfunctioning electronic equipment
  
• Overheating of motors, transformers and cables Tuned Harmonic Filters eliminate
• these problems by reducing the harmonic content and also by generating reactive power.

Benefits of Tuned Harmonic Filters
　
Power Factor Correction

• Voltage improvement
  
• Reduction of system losses
  
• Lower utility bills
  
• Increased system capacity

Harmonic Filtering

• Avoidance of harmonic resonance
  
• Reduction of voltage distortion
  
• Lower maintenance
  
• Fewer nuisance tripping of fuses, breakers and relays
  
• Proper functioning of electrical equipment
  　

PQ TECH experience
PQ TECH has over 20 years experience in the domain of harmonic studies, equipment specification and design and manufacture of harmonic filters.
PQ TECH has supplied harmonic filters to industry worldwide with installations on all continents.
With reliable capacitor technology since 1956, PQ TECH can serve more exact harmonic frequency tuning ranges.
This is very important for running of high pulse rectifier drives and both AC and DC arc furnaces.
Applications

• Rectifiers for electrochemical and electro winning process
  
• Steelmaking arc furnace and rolling mills
  
• Pulp and Paper Process
  
• Variable speed drive systems
  
• Electric Utilities

Guaranteed Solutions
PQ Tech serves a full range of technical responsibility for all services provide giving the customer complete, reliable, fully guaranteed solutions to power quality problems
　
PQ TECH provides the following services

• Power Quality and Harmonic measurements
  
• Harmonic studies and analysis.
  
• Payback calculations for each case of applications.
  
• Tuned harmonic filter system designs.
  
• Complete project coordination with other divisions for drives,
  
• furnace transformers, switchgear, controls, etc.
  
• Commissioning service

Characteristics of Capacitor types Features & Types Internally Fused Externally Fused Fuseless
Visual check faulty unit Impossible Easy to find Impossible
Replace cost Higher Lower Higher
Bank Connection (e.g.) 12S 6P 6P 12S 6P12S
C Lose by a faulty roll Smaller Higher Smaller
Protection terminal to case fault No(hazard) yes No(hazard)
Sensitivity of unbalance Lower Higher Lower
Cost of protection Less Higher Less
Popular in Using Europe / Asia America / Asia Europe
Continuing service of unit at a roll faulty Yes, but this is concern the oil contamination No Yes, but this is concern the oil Contamination


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