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Detuned harmonic filter panel

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Detuned harmonic filter panel Specification

Features
APFC Panel with detuned reactors

Cabinet Material
Mild Steel

Phase
3 Phase

Display Type
Digital

Conductor
AL Bus Bars

Cover Material
Mild Steel

Protection Class
IP54

Material
Mild Steel

Rated Voltage
415 Volt (V)

Components
Microprocessor based

Thickness
3 Millimeter (mm)

Base Material
Mild Steel

Panel Type
Mild Steel CRCA

Frequency
50 Hertz (HZ)

Power Rating
50KVAR onwards

Usage & Applications
Power Factor Correction & Harmonic Protection.

Operating Voltage
480 Volt (V)

Control System
Microprocessor based fast switching

Cooling System
Air Cooled

Operating Temperature
40 Celsius (oC)

Warranty
1 year

IP Rating
IP54

Protection Level
IP54

Rated Operation Voltage
480V

Product Type
Electric Panel

Surface Finish
Powder Coated

Surface Color
White

Frequency (MHz)
50 Hertz (HZ)

Application
Power Factor Correction & Harmonic protection.

Detuned harmonic filter panel Trade Information

Minimum Order Quantity
1 Unit

Payment Terms
Cash Advance (CA), Cash in Advance (CID), Letter of Credit at Sight (Sight L/C)

Supply Ability
10 Units Per Month

Delivery Time
15 Days

Sample Policy
Contact us for information regarding our sample policy

Packaging Details
Seaworthy packing for export.

Main Export Market(s)
Asia

Main Domestic Market
All India

Certifications
ISO9001

About Detuned harmonic filter panel

Detuned Harmonic Filter Panel

It is a type of reactive power quality equipment used in electrical systems to improve power factor while preventing the amplification of harmonics. It's particularly important in industrial environments where non-linear loads (like VFDs, PLCs, welding machines, etc.) generate harmonic currents.

What Is a Detuned Harmonic Filter Panel ?

A Detuned Harmonic Filter Panel is an advanced type of Automatic Power Factor Correction (APFC) panel that incorporates series reactors (chokes) in combination with capacitor banks. The addition of reactors prevents resonance with the power system and suppresses harmonic amplification.

How does It Work :

Power Factor Correction: Like a standard APFC panel, it improves power factor by injecting reactive power using capacitor banks.
Harmonic Mitigation: Reactors (usually 6% or 7% detuned) are connected in series with capacitors to detune the circuit from the dominant harmonic frequency (usually the 5th).
Avoids Resonance: By tuning the LC circuit to a frequency below the 5th harmonic (typically around 189210 Hz for 50 Hz systems), it prevents harmonic resonance and protects both the capacitors and the overall network.

Typical Components:

Power Capacitor Banks
Series Reactors (6% or 7% impedance)
Thyristor or Contactor-based Switching
APFC Relay (Controller)
MCBs/MCCBs/Contactors
Current Transformers (CTs)
Cooling Fans & Filters
Enclosure (Wall-mounted or Floor-standing, IP42IP55)

Benefits:

Improves power factor without increasing harmonic distortion.
Avoids overloading or premature failure of capacitors.
Enhances system stability and longevity.
Reduces electricity penalties due to low power factor.
Helps maintain compliance with standards like IEEE 519 or IEC 61000-3-4.

Applications:

Used across industries where harmonic-producing loads exist, like:

Automotive & Forging Units
Cement & Steel Plants
Textile & Paper Industries
HVAC Systems
Commercial Buildings with large UPS or elevator loads

Selection Guidelines:

Perform harmonic analysis or THD measurement.
Choose capacitor and reactor ratings based on system voltage and harmonic levels.
Opt for 6% or 7% detuning based on dominant harmonics.

Example Panel Rating (for a 415V LT System):

Parameter	Value
Panel Type	Detuned Harmonic Filter Panel
Rating	200 kVAR (Expandable)
Reactor Tuning	189 Hz (7% Reactors)
Switching	Automatic (Contactor-based or Thyristor)
Controller	Microprocessor-based APFC Relay
Enclosure	IP54, Floor Mounted, Powder Coated