1. DCRK DIGITAL POWER FACTOR CONTROLLERS

2. DCRK DIGITAL POWER FACTOR CONTROLLERS
96X96mm
144X144mm
DCRK5 5 steps
DCRK7 7 steps
DCRK8 8 steps
DCRK12 12 steps
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3. DCRK DIGITAL POWER FACTOR CONTROLLERS
OPERATING FEATURES
MEASUREMENTS
Present cosj
Present L-L voltage + maximum 
Present current + maximum 
Dkvar e kvar
Weekly average P.F.  and present P.F.
Capacitor overload % + maximum 
Present panel temperature + maximum .
 Measurement logged in non-volatile memory and keypad clearable.
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4. DCRK DIGITAL POWER FACTOR CONTROLLERS
OPERATING FEATURES
BUILT-IN PROTECTIONS
Capacitor current overload
Capacitor over-voltage
Panel over-temperature
No-voltage release.
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5. DCRK DIGITAL POWER FACTOR CONTROLLERS
OPERATING FEATURES
SETUP
Base setup with most common settings
(6 parameters)
Advanced setup with special settings
(16 parameters)
Fast PC setup
Fully automatic setup
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6. DCRK DIGITAL POWER FACTOR CONTROLLERS
OPERATING FEATURES
ALARMS
A01 Under-compensation
A02 Over-compensation
A03 Low current
A04 High current
A05 Low voltage
A06 High voltage
A07 Capacitor overload
A08 High temperature
A09 No voltage release.
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7. DCRK DIGITAL POWER FACTOR CONTROLLERS
ADVANTAGES
Extensive number of measurements
(V-A- kvar- ecc.)
Capacitor overload protection
Measurement of weekly average power
factor
Built-in temperature sensor
TTL/RS-232 serial communication interface
Manual or Automatic set-up
Programmable alarms
Automatic identification of CT current flow
Easy CT setting for the final user
Measurement of power factor as well as
cosj
Keypad lock function.
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8. DCRK DIGITAL POWER FACTOR CONTROLLERS cULus (UL for USA and Canada)
CERTIFICATIONS
cULus (UL for USA and Canada)
COMPLIANCE
IEC ; IEC/EN ;
CISPR 11/EN 55011
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9. DCRK DIGITAL POWER FACTOR CONTROLLERS
COMPARISON
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10. DCRK DIGITAL POWER FACTOR CONTROLLERS
COMPARISON
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11. DCRK DIGITAL POWER FACTOR CONTROLLERS
COMPARISON
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12. DCRK DIGITAL POWER FACTOR CONTROLLERS
TECHNICAL SPECIFICATIONS
TRMS = TRUE ROOT MEAN SQUARE
DCRK measurements are calculated in TRMS, to give exact values also in presence of harmonic distortion.
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13. DCRK DIGITAL POWER FACTOR CONTROLLERS
TECHNICAL SPECIFICATIONS
COSj = DISPLACEMENT POWER FACTOR
It is in the cosine of the displacement angle between voltage and current.
DCRK regulators can read correctly the D.P.F. regardless of the presence of harmonics on current and voltage waveforms.
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14. DCRK DIGITAL POWER FACTOR CONTROLLERS TECHNICAL SPECIFICATIONS
The Power Factor (P.F.) or Total Power Factor (TPF) is the ratio between active power (W) and apparent power (VA).
In a system without harmonics, the power factor is the same value as COSj.
In other conditions, the power factor is less than the COSj.
Power factor correction systems can adjust the COSj to the required value and can thereby obtain the best possible power factor. W W
P.F. =
P.F. = VA VA
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15. DCRK DIGITAL POWER FACTOR CONTROLLERS TECHNICAL SPECIFICATIONS
MEASUREMENT OF WEEKLY AVERAGE POWER FACTOR
This reading considers the last 7 days of the DCRK operation.
It is calculated in the same way used by energy suppliers, storing active and reactive energy meters in DCRK internal memory.
This value is therefore a true efficiency index of the entire reactive power correction system. Wh
Varh² + Wh²
P.F. =
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16. DCRK DIGITAL POWER FACTOR CONTROLLERS TECHNICAL SPECIFICATIONS
AUTOMATIC IDENTIFICATION OF CT CURRENT FLOW
At power up, the DCRK controller automatically recognizes the current flow direction through the Current Transformer (CT).
This avoids inverting the CT connections during installation.
In cogeneration plants, where it is necessary to operate in 4-quadrant, the CT connection sense must be set manually.
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17. DCRK DIGITAL POWER FACTOR CONTROLLERS TECHNICAL SPECIFICATIONS
EXTREME REDUCTION OF STEP SWITICHING
A control algorithm provides for the maximum reduction of the number of operations.
The adjustment is conducted in a precise manner and not by consecutive attempts.
The reduction of the number of operations substantially lowers the capacitor and contactor wear.
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18. DCRK DIGITAL POWER FACTOR CONTROLLERS TECHNICAL SPECIFICATIONS
HOMOGENEOUS USE OF EQUAL RATED STEPS
Each step is provided with one operation counter and one hour meter, in order to provide an equal usage of capacitors with the same rating. The uniform operation of the steps prolongs the life and efficiency of both the capacitors and contactors.
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19. DCRK DIGITAL POWER FACTOR CONTROLLERS TECHNICAL SPECIFICATIONS
AUTOTRIMMING
Consents to the ongoing control of the steps power installed.
In case of step wear, all the relative power parameters are automatically recalculated. This allows the DCRK unit to work rapidly and efficiently, that is with fewer and quicker operations.
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20. DCRK DIGITAL POWER FACTOR CONTROLLERS TECHNICAL SPECIFICATIONS
OVERLOAD PROTECTION OF CAPACITORS
5% 5th HARM
U THD = 5%
CAP OVRL = 102.5%
The capacitor overload can be caused by overvoltage or, more often, by non-linear loads that cause harmonic distortion on the voltage line.
The voltage waveform is analysed by special algorithm that calculates the exact percentage of the current flowing in the capacitors.
Once the set current overload threshold limit is exceeded, the capacitors are disconnected within a time inversely proportional to the exceeding limit.
THD (Total Harmonic Distortion) does not change with harmonic frequency, and therefore it is not an indicator of capacitor overload.
5% 7th HARM
U THD = 5%
CAP OVRL = 105.5%
5% 11th HARM
U THD = 5%
CAP OVRL = 114.5%
5% 13th HARM
U THD = 5%
CAP OVRL = 120%
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21. DCRK DIGITAL POWER FACTOR CONTROLLERS TECHNICAL SPECIFICATIONS
NO VOLTAGE RELEASE
This function can prevent damage to the capacitors by disconnecting them from the mains when short power lossess are detected.
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22. DCRK DIGITAL POWER FACTOR CONTROLLERS TECHNICAL SPECIFICATIONS
PROTECTION AGAINST
OVER-TEMPERATURE
The DCRK controllers include an internal temperature sensor, which monitors the temperature variation of the electric panel.
This temperature value is displayed and the maximum value is logged.
By setting related parameters, a threshold can be set to switch on a relay to operate a ventilation system.
It is also possible to set an higher threshold to generate an overtemperature alarm.
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23. DCRK DIGITAL POWER FACTOR CONTROLLERS TECHNICAL SPECIFICATIONSM
FOUR-QUADRANT OPERATION
When a plant is equipped with a co-generation system, it means there are conditions where energy is imported (consumed) and others where it is exported (generated).
In these circumstances, the displacement angle between voltage and current can vary between 0° and 360° (four quadrants) so the DCRK must be programmed accordingly.
It is possible to set two independent cosφ setpoints, one for imported and the other for exported energy.
When working with cogeneration plants, automatic CT connection feature cannot be used.
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24. DCRK DIGITAL POWER FACTOR CONTROLLERS TECHNICAL SPECIFICATIONS
EASY CURRENT TRANSFORMER SETTING
The manufacturer of power factor correction
panels can set all of the setup parameters of the DCRK except the CT primary, since it depends on the final customer plant.
In this case, during the system installation and once the controller is powered up, the display will show a flashing CT indicating that the CT has
not been programmed.
Just selecting the correct value from the list and storing it with one key will enable the DCRK operation.
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25. DCRK DIGITAL POWER FACTOR CONTROLLERS TECHNICAL SPECIFICATIONS
AUTOMATIC SETUP
Allows the installation of the DCRK controllers without programming any parameter.
Just pushing two keys, the user is able to put the DCRK into operation.
5sec
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26. DCRK DIGITAL POWER FACTOR CONTROLLERS TECHNICAL SPECIFICATIONS
KEYPAD LOCK
The activation of this function is made by a combination of keys.
Once programmed, the following operations will be locked:
Access to parameter setup
Changing of COSj setpoint
Changing the operating mode (AUT/MAN)
MAX values clearing
However, all the measurements will be still accessible.
1° MODE
2° 3 x
3° 2 x
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27. DCRK DIGITAL POWER FACTOR CONTROLLERS TECHNICAL SPECIFICATIONS
TTL / RS-232 INTERFACE
By using the DCRK SW software and the TTL/RS-232 interface, a quick set-up of the controller can be achieved via PC, avoiding in this way, possible parameter setting errors.
The DCRK programmed parameters can also be stored on the PC and quickly downloaded into an unlimited number of units, which require the same programming.
The customising of alarm properties can be made as well as the automatic panel testing with the control of the power installed and the test report printing too.
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28. DCRK DIGITAL POWER FACTOR CONTROLLERS
DCRK SW SOFTWARE
TTL / RS-232
COMMUNICATION PORT
Full system monitoring:
- Graphic and numeric
measurements display
- DCRK status
- Virtual front panel
For each step:
- Function
- Status
- Reactive power
- Operation counter
- Hour meter.
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29. DCRK DIGITAL POWER FACTOR CONTROLLERS
DCRK SW SOFTWARE
MONITORING THE CAPACITORS EFFICIENCY
Measurement of the
actual kVar of each
capacitor step.
Counter for the number
of switching operations
of each capacitor step.
Time counter for the
total connection time
of each capacitor step.
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30. DCRK DIGITAL POWER FACTOR CONTROLLERS
DCRK SW SOFTWARE
TTL / RS-232 COMMUNICATION PORT
Access to all setup parameters in four languages
Save / Load / Print parameters
Highlighted user changes
Back-to-default button.
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31. DCRK DIGITAL POWER FACTOR CONTROLLERS
DCRK SW SOFTWARE
TTL / RS-232
COMMUNICATION PORT
Alarm properties customization
- Alarm enable
- Alarm relay activation
- Step disconnection
- Alarm trip delay.
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32. DCRK DIGITAL POWER FACTOR CONTROLLERS
DCRK SW SOFTWARE
TTL / RS-232
COMMUNICATION PORT
Automatic testing of
electric panel.
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33. DCRK DIGITAL POWER FACTOR CONTROLLERS
SPECIAL POWER FACTOR CORRECTION CONTACTORS
Kvar (400V) 60 8
12,5 15 20 30 38
BF9K
BF20K 45
BF12K
BF25K
BF40K
BF50K
BF65K
BF80K
Contactor 10 40 50
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34. DCRK DIGITAL POWER FACTOR CONTROLLERS
SPECIAL POWER FACTOR CORRECTION CONTACTORS
KITS TO ASSEMBLE BF..K CONTACTORS
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35. DCRK DIGITAL POWER FACTOR CONTROLLERS
Other products for your power factor correction system
Switch disconnectors
Push buttons and selectors
Digital multimeters
M23 GB

36. THANK YOU AND GOODBYE