System Voltage : 400..660V Filter Tuned to :
5th, 7th,11th, l3th Rated KVar : 60....1800 KVar Type :
Auto/fixed Tuned Harmonic Filter. Harmonic filters consist of
capacitors connected in series with reactor. The capacitors produce
reactive power at the filter's fundamental frequency. A typical
harmonic fiIter consists of three series resonant circuits tuned to the
most common harmonics (5th, 7th & 11th harmonics). Harmonic filters
are custom designed for each application using standard components.
This ensures that the best possible power factor correction and
filtering characteristics are achieved with a reasonable investment.
This will help in reducing the total harmonic distortion in the system
as per relevant standards like IEEES /9.
De
- tuned Filter
System Voltage : 400....950V Resonant Frequency :
141 Hz and 189 Hz, other frequencies on request and 3 rd order harmonic. Rated KVar : De - tuned
Filter 25....5000 KVar Type : Auto / fixed De
- tuned fiIters are designed to be used for power factor correction in
systems where harmonics are generated by nonlinear loads, each step of
a de - tuned filters consists of a capacitor and low loss reactor
connected in series. These two form a series resonant circuit tuned at
a frequency below the lowest harmonic frequency present in the system
normally the 5th (250Hz). De - tuned filter also removes lower order
harmonics from the system to some extent. This helps to offset the
resonance effect for longer trouble free operation.
LT
Capacitor
Rated
voltage : 400V, 440 V, 480 V, 525 V, 610 V mains. Tolerance : 2 times rated current
continuous , 300 times rated current during short peaks. Double Reliability : MPP Self-healing
at over voltage peaks, over-pressure disconnector. Lowest possible failure rate : 200
ppm (parts per miIIion)
OSF
(Active Filter)
System Voltage : 400....660V Compensating Current
: ( r. m. s. ) : 60A, 90A,135A, 1 80A, 279A, 360A Response time : < 40ms Ambient
Temperature: 0 to 400 C The
active filter is installed in parallel with the loads that generate the
harmonics. It analyses the harmonic current generated by these
nonlinear loads and the entire spectrum from the 2nd to the 25th
harmonic or a specially targeted harmonic. This neutralizes the
corresponding harmonic currents completely at the point of connection.
This device consists of one filter for each phase so that even highly
asymmetric harmonic pollution can be suppressed, as well as the 3rd,
9th and l5th harmonics, which add together arithmetically in the
neutral conductor.
HT
Capacitor & Associated Equipments
Systems Voltage : 11 KV, 22 KV, 66KV 7.3 KV...onwards
Rated KVar : 50 KVar....10 MVar with series Reactor High
voltage power HT Capacitor Bank & capacitor units include wide
range of equipments like RVTs, NDRs, GOD/DO Fuse, offload timer
elevating hardware etc. The capacitors are dry or oil filled, one and
three-phase all fiIm power and surge protection capacitors. Featuring
the most modern technology, they are produced to meet the requirements
of different climatic and operating conditions. They can be open or
enclosed, high or low power, fixed power, integrated or for use with
individual motors.
Thyristor
Switched Capacitor Panels
System Voltage : 400....690V Step Power :
50....300 KVar Rated KVar : 50....1000KVar Switching time : < 40ms. Capacitor
Panels with high-speed switching capability are designed to support the
supply voltage of distribution systems comprising of welding machines
and other fast switching loads to correct the power factor of connected
loads. Thyristor switches are resistant to mechanical wear, operate
without noise and are capable of practically transient-free switching.
The minimum time taken by the control unit to switch on/off all the
steps of the capacitor bank is a period of one cycle only.
