Electrical Harmonic Filter Specification

Specifications of Harmonic Filters

Electrical Harmonic Filter

Harmonic Filter Specifications: Designing Tuned Harmonic Filter, auto-variable or fixed type, requires Power System modelling and load specific data. The required Engineering efforts are much needed for effectively Improving the electrical Power Quality by Mitigating Harmonic Distortions, both Total Voltage Harmonic Distortions (THDv) and Total Current Harmonics Distortion (THDi). Tuned Harmonic Filter Design requires tuning with the Plants Power System impedance and this solution is not a mass manufacturing process but a service manufacturing, and a knowledge based custom engineering product for the manufacturers of harmonic filters. It slashes Energy Bill (kWh Energy Conservation) by up to 15% and Demand Cost (kVAh Savings) by up to 50%. those depending upon the load characteristics and harmonic distortions in the power system. The variable tuned harmonic filter maintains unity Power Factor PF, and adjusts with the load demand.

Low Voltage Harmonics Filter Specification and Products Range.

Voltage Rating: 240V, 290V, 380V, 415V, 480V, 575V, 660V, 690V, 750V, 1000V, 1100V, 1200V and 2000V. Those are the standard voltages widely used by Industries. It may be noted that Harmonic Filter is a custom designed product, and in case your equipment voltage is not in the above list, no problem, it could be manufactured.  

Current Rating: We manufacture up to 6,000A for a single harmonic filter. However being a custom designed product, most time we manufacture job specific current ratings.

Harmonic filter Connection Point: Encon harmonic filter is always connected in PARALLEL with load bus or Transformer Secondary incomer PCC.

Harmonic filters Application:

1.    At Transformer incomer PCC: One single harmonic filter caters to full transformer load. For example, if a 3.15MVA, 33kV/415V transformer supplies to myriads of nonlinear loads, say 200nos of VFD drives, DC Drives, UPS etc.; you do not need installing filter for each drive. One centralized harmonic filter at the Transformer Secondary incomer PCC would solve all your harmonic problems, eliminate equipment tripping, and drive failures.  
   
2.    Load Application: Putting across individual load end is very rare, unless the load is big enough and some technical requirement justify it. Putting across transformer incomer PCC for its full capacity is most common.    

3.    Controllability: Variable harmonic filters are most common. However, if the load is of constant type, installing fixed harmonic filter would save cost.

4.    Operation Type: Most commonly used filters are fully automatic type, without any manual intervention. However, if the filter size is small, manual type would save cost.

5.    Arc Flash proof design: Encon harmonic filters are designed for arc flash compatibility BIL of 4kV-rms for 1-minute and 12kV-peak.

6.    Short Circuit proof design: Encon harmonic filters are designed for 50kA short circuit withstand capability for 1sec.

7.    IP Grade: Encon harmonic filters are designed for IP55 compatibility.

Medium and High Voltage Harmonics Filter Specifications and Product Range.

Voltage Rating: 2.2kV, 3.3kV, 6.6kV, 11kV, 12kV, 22kV, 24kV, 33kV and 36kV. Those are the standard voltages widely used by Industries. It may be noted that Harmonic Filter is a custom designed product, and in case your equipment voltage is not in the above list, no problem, it could be manufactured.  

Current Rating: Custom designed.

Harmonic filter Connection Point: Encon harmonic filter is always connected in PARALLEL with load bus or Transformer Primary (or Secondary) incomer PCC.

Harmonic filter Applications:

1.    At Transformer incomer PCC: One single harmonic filter caters to full transformer load. For example, if a 150MVA, 220kV/33kV transformer supplies to myriads of nonlinear loads, you do not need installing filter for each load. One centralized harmonic filter at the Transformer Secondary incomer PCC would solve all your harmonic problems, eliminate equipment tripping, and drive failures.  

2.    Load Application: Putting across individual load end is very rare, unless some technical requirement justifies it. Putting across transformer incomer PCC for the full load capacity is most common.    

3.    Controllability: Fixed harmonic filters are more common, and variable filters are rare and costly.

4.    Operation Type: Most commonly used filters are fully automatic type, without any manual intervention. However, if the filter size is small, manual type would save cost.

5.    Arc Flash proof design: Designed as per the voltage grade.

6.    Short Circuit proof design: Designed as per the current rating

7.    IP Grade: Suitable for outdoor installation.