Green Dot Electric Limited has developed a Variac Based Power Factor Panel. A Motorised Variable Transformer ( the Motorised Dimmer Dot ) is used a source of Variable Voltage that is applied to the required value of Capacitance rated for 440 Volts or so.

1. Owner - Mr.Raj Kumar Dhawan
Comp.Name- Green Dot India Pvt.Ltd.
Source- www.greendotindia.com
Email-Id : info@greendotindia.com
greendotindia.@hotmail.com
Address:- G-9 Hemkunt Tower /Modi
Tower,98,
Nehru PlaceNew Delhi 110 019
Power Point Of Automatic Power
Factor Controller

2. AN IDEAL SOLUTION for POWER FACTOR
CORRECTION FIRST TIME IN INDIA
This is 3rd Generation of Development
in the APFC Field.Indian Market – till today was exposed to the SECOND
GENERATION units that are
RELAY TYPE akin to RELAY TYPE STABILISERS in Voltage stabiliser field.This is SERVO
TYPE APFC CONTROLLER – CONTINUOUSLY CORRECTING TYPE.This will upgrade your
concept of POWER FACTOR CORRECTION.THE UNBALANCED
TYPE APFC provides IDEAL CORRECTION to INDIVIDUAL PHASES .
This objective & advantage is not possible from RELAY TYPE Power Factor Panels.
Your new purchase CAN BE IN THIS TYPE OF Panel. Cost wise competitive.

3. Automatic power Factor
Controller
AT EXISTING INSTALLATIONS of RELAY TYPE POWER FACTOR PANEL installations – a SMALL SIZED
UNBALANCED TYPE UNIT will further correct POWER FACTOR of
INDIVIDUAL PHASES by correcting PF of INDIVIDUAL PHASES from AVERAGE FIGURES of SAY 0.95-
0.97 to 1 & thus further saving 3-4 % on Electricity Bills.
SAY ADD 10 KVAR or 20 KVAR CONSTANTLY VARIABLE CAPACITORS in INDIVIDUAL PHASES.You
may call us for FURTHER DETAILS.R K Dhawan 9810117725

4. GREEN DOT AUTOMATIC POWER FACTOR
CONTROLLER
The innovative character of this APFC controller can be best
understood from the anomaly with the Voltage stabiliser
field.There are three STAGES of development
in the field of VOLTAGE STABILISERS /VOLTAGE REGULATORS.
The latest is a SERVO TYPE VOLTAGE STABILISER. –
that maintains Voltage of any establishment to + 1 % or so accuracies.
Earlier – 1st Stage was when – a Voltage Regulator of MANUAL ROTARY TYPE was
used to adjust the voltage as is still being done on Voltage regulators for TV etc.
There is ONE b4,6 or 8 POSITION rotary switch that is rotated to adjust output
voltage. In 2nd stage of this development, RELAY
PE STABILISERS like those used with Air Conditioners etc. came in. There are Steps ( 2,3,4 or 5 ) –
and we call them in the Regulating Transformers that are Switched ON and OFF to keep output
voltage to say + 10 % or so accuracy.In the 3rd Stage – the Servo stabilisers came in that maintain
output voltage accuracy of + 1 % or so by using a Motor
Driven Variable Transformer .

5. Green Dot Electric Limited has developed a Variac Based Power Factor Panel. A Motorised
Variable Transformer ( the Motorised Dimmer Dot ) is used a source of Variable Voltage
that is applied to the required value of Capacitance rated for 440 Volts or so. The varying
voltage applied to the Fixed value capacitance-makes the Fixed value Capacitance to
Continuously Variable capacitance that is used to correct the Power Factor without steps.
There are no switching of Contactors or interruption of CAPACITIVE CIRCUITS and thus no
harmonics get introduced. The costly harmonics filters are also avoided. In case the supply
goes off & comes in – delay is provided to give time for discharge of capacitors and then to
start again at zero voltage input from the Dimmer Dot.

6. Voltage Stabilizer
There is further advantage in our
system that the power change is proportional to the square of applied voltage to the
capacitors whereas by comparison to Switching In, and or out Capacitors – the affect is
only to the first power of the capacitor size.
The Power Factor Sensing relay has been developed from an advanced Micro Controller that
senses the existing Power Factor & rotates the Variable Transformer forward or backward –
increasing or decreasing the output voltage of the Variable transformer, to provide required
voltage across the capacitor so that the adjusted & the required power factor is always
maintained with respect to ever varying load of the establishment. The LED Read out panel
of the Relay Box reads Input Voltage & adjusted Power Factor