Harmonic Block Reactors


Available in Copper & Aluminium


Design Features

Neptune filter circuit are designed as three-phase reactors with an iron core and air gap. Harmonic Filter Reactors are made out of highest quality material and very stringent quality control. It has been designed with properties like low temperature rise and lower flux density so that it can operate in worst conditions of ambient and harmonic overloads. They offer very good degree of linearity. Cheaper and non-linear reactors may trigger undesirable chain phenomena during periods of operation with high harmonic values, such as reducing in the inductance with consequent increase in the resonance frequency of the LC group, which would drain off more harmonic current, further reducing its inductance and overload the reactor more and more. Reactors are available with filtering factor of 7% and 14% in 12.5, 25, 50 and 100 KVAR rating. Any other filtering factor and rating can be made on request.

Technical Specifications

# Parameters
Standard Voltage (Un) 415/440/480V/550/690
Rated Voltage : 3 x 415V Rated (KVAr) 5,10,12.5, 25, 50 &100
Frequency 50 Hz
Capacitance Tolerance -1000 V
Test Voltage 3000 V
Filtering factors / Tuning Freq. 7%, 189 Hz 14%, 134 Hz
Tolerance of inductance ±3%
Linearity (L> 0.95 x Ln) 200%
Ambient temperature + 55 C
Insulation class H
Cooling method Natural cooling (AN)
Installation Indoor
Protection degree IP 00
Operating altitude 1000m above sea level at rated operation
Temp. sensor (normally closed) 155 C
Reference standard IEC 61558-2-20

Technical Drawings