|
Capacitors & Harmonic Block Reactor:
Capacitors:
Neptune-Ducati ranges of Capacitor Banks are using capacitor modules from M/s Ducati energia s.p.a., Italy. Ducati energia is a leading company in production of power factor correction capacitors. Following this tradition, continuous investments in research and development of new products have represented the policy of the company.
The result of this philosophy is the new range of long life capacitors MONO 16 and MODULO 50. Thanks to the technological innovation of self-healing metalized polypropylene, the rated power of self-healing metalized polypropylene, the rated power of 50 KVAR is achieved in just one 3 phase element with very compact dimensions and a much higher life expectancy in comparison with other models.
These new long capacitors Mono 16 and Modulo 50 reach an expected life of more than 150000 hours and a size reduction upto 40% against the technologies so far applied with low loss of 0.2W/VAR. With 41 capabilities and oil impregnation, the performance of these capacitors are much better in comparison to other technologies available in market like gas filled and dry type.
Haramonic Block Reactor:
Design Features:
Neptune Filter Circuits are designed as three phase reactors with an iron core and air gap. Harmonic Filter Reactors are made out of high 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 and low losses 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 creator more and more. Reactors are available with filtering factor of 5.6%, 7% and 14% as per standard ratings. Any other filtering factor and rating can be developed on request.
Losses:
The 50 Hz losses are comparatively low but when the filter circuit reactors are installed into the cabinets, they are charged with additional currents, predominately those of the 5th, 7th and 11th harmonics. Then the total heat losses are dissipated by the means of centrifugal fans on the ceiling of cabinets.
Series Combination:
Reactors are designed to be used in series with capacitor banks to make tuned or De-Tuned filter circuit as per activcomp design requirement.
Capacitor Specifications:
Standard Voltage (Un)
|
525V
|
Rated Frequency
|
50Hz
|
Capacitance Tolerance
|
-0 + 5%
|
AC Test Volt. between term.
|
2.15 Un x 10"
|
AC Test Volt between term. and Case
|
3kV x 10"
|
Dielectric losses
|
<0.2W / KVAR
|
Temperature class
|
-40 + 50oC
|
Service
|
Continuous
|
Discharge Resistor
|
10% of Un in 20 sec.
|
Over Heating
|
<60oC
|
Inrush Current withstand Capability
|
200 In.
|
Expected life
|
150,000h
|
Max. permissible current
|
4 in
|
Connection
|
Delta
|
Terminals
|
1 x M12 (upto 50 KVAR)
|
Installation
|
Internal
|
Reference Standard
|
EN 60831-1/2
|
Harmonic Block Reactor Specifications:
Rated Voltage
|
3 x 415 / 440V
|
Frequency
|
50 Hz
|
Construction Max. Voltage
|
1000V
|
Test Voltage
|
2500V
|
Filtering Factors / Tunning Freq.
|
5.6% (210Hz)
7% (189Hz)
14% (133Hz)
|
Tolerance of Inductance
|
+2%
|
Linearity
|
200%
|
Ambient Temperature
|
+55oC
|
Winding Material
|
Cu
|
Insulation Class
|
H
|
Cooling method
|
Forced air cooling in Enclosure
|
Installation
|
Indoor
|
Temp. Sensor (normally closed)
|
155oC
|
Reference Standard
|
IEC 61558-2-20
|
|
