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M23 GB 06 02 08 1RANGE CHARACTERISTICS SOFTWARE

CONTROLLERSCONTROLLERS




SERIES

96x96mmDCRK5 – 5 stepsDCRK7 – 7 steps

96x96mmDCRK5 – 5 stepsDCRK7 – 7 steps

144x144mmDCRK8 – 8 steps

DCRK12 – 12 steps

144x144mmDCRK8 – 8 steps

DCRK12 – 12 steps

144x144mmDCRJ8 – 8 steps

DCRJ12 – 12 stepsDCRJ12F – 11 steps + 1 alarm

configuration

144x144mmDCRJ8 – 8 steps

DCRJ12 – 12 stepsDCRJ12F – 11 steps + 1 alarm

configuration





SERIES





SERIES


AUTOMATIC POWER FACTOR




SERIES

AUTOMATIC POWER FACTORAUTOMATIC POWER FACTOR


AUTOMATIC POWER FACTOR




SERIES





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SERIES







CONTROLLERSCONTROLLERSOPERATING FEATURES

SET-UP•Base set-up with most common

settings (6 parameters)

•Advanced set-up with special

settings (16 parameters)•Fast PC set-up

•Fully automatic set-up.





CONTROLLERSCONTROLLERSADVANTAGES

•Extensive number of measure (V-A-kVAR- etc.)

•Capacitor overload protection

•Internal overtermperature

protection•External overtemperatureprotection (DCRJ only)

•Weekly average power factormeasure

• TTL/RS 232 serial communication

interface (DCRK only)•RS232 and RS485 serial

communication interface(DCRJ only)

•Automatic recognition of CTcurrent flow.





CONTROLLERSCONTROLLERSADVANTAGES

•Quick and reliable CT setting

•Both power factor and cosφmeasure

•Voltage and current harmonic

measure (DCRJ only)•Event logging (DCRJ only)

•Keypad lock

•Automatic or manual set-up

•Configurable alarms.






CERTIFICATIONS ANDCOMPLIANCE

• CERTIFICATIONS OBTAINED:

- cULus

- GOST.

• COMPLIANT WITH STANDARDS

- IEC61010-1

- IEC/EN 61000-6-2

- CISPR 11/EN 55011.





CONTROLLERSCONTROLLERS TECHNICAL CHARACTERISTICS

TRMS = TRUE ROOT MEAN SQUAREMeasure are calculated in TRMS, to give exact valuesalso in presence of harmonic distortion.




AUTOMATIC POWER FACTORAUTOMATIC POWER FACTORCONTROLLERSCONTROLLERS

TECHNICAL CHARACTERISTICS

COSϕ = DISPLACEMENT POWER FACTORIt is the cosine of the displacement angle betweenvoltage and current.Both types of controllers can correctly read the D.P.F.regardless of the presence of harmonics on currentand voltage waveforms.






POWER FACTOR The Power Factor (P.F.) or Total Power Factor (TPF) isthe ratio between active power (W) and apparentpower (VA).In a system without harmonics, the power factor isthe same value as COS .φIn other conditions, the power factor is less than theCOS .φ

Power factor correction systems can adjust the COSφto the required value and can thereby obtain the best

P.F. =

W

VA






MEASURE OF WEEKLY AVERAGE POWER FACTOR This reading considers the last 7 days of the controlleroperation.It is calculated in the same way used by energysuppliers, storing active and reactive energy values inDCRK / DCRJ internal memory. This value is therefore a true efficiency index of theentire reactive power correction system.

Wh

Varh² + Wh²

P.F. =






AUTOMATIC RECOGNITION OF CT CURRENT FLOWAt power up, the DCRK / DCRJ controller automaticallyrecognises the current flow direction through theCurrent Transformer (CT). This avoids inverting the CT connections duringinstallation.In co-generation plants, where it is necessary tooperate in 4 quadrants, the CT connection sense must

be set manually.

CT






EXTREME REDUCTION OF STEP SWITICHINGA control algorithm provides for the maximum reductionof the number of operations. The adjustment isconducted in a precise manner and not by consecutiveattempts. The reduction of the number of operations substantiallylowers the capacitor and contactor wear.






HOMOGENEOUS USE OF EQUAL RATED STEPSEach step is provided with one operation counter andone hour meter, in order to provide an equal usage of capacitors with the same rating. The uniform operationof the steps prolongs the life and efficiency of both thecapacitors and contactors.






AUTOTRIMMINGConsents to the ongoing control of the steps powerinstalled.In case of step wear due to overvoltage or over-current,all the relative power parameters are automaticallyrecalculated. This allows the controller to work rapidly

and efficiently, that is with fewer and quicker operations.







OVERLOAD PROTECTION OFCAPACITORS The capacitor overload (O/D) can becaused by overvoltage or, moreoften, by non-linear loads that causeharmonic distortion on the voltage

line. The voltage waveform is analysedby a special algorithm thatcalculates the exact percentage of the current flowing in the capacitors.Once the set current overload

threshold limit is exceeded, thecapacitors are disconnected within atime inversely proportional to theexceeding limit. THD (Total Harmonic Distortion)does not change with harmonicfrequency, and therefore it is not an

5% 5th HARM

U THD = 5%

CAP O/D =102.5%

5% 7thHARM

U THD = 5%

CAP O/D =105.5%

5% 11thHARM

U THD = 5%

CAP O/D =114.5%

5% 13thHARM

U THD = 5%

CAP O/D =120%







NO VOLTAGE RELEASE This function can prevent damage to the capacitorsby disconnecting them from mains when short powerlosses are detected.







PROTECTION AGAINSTOVERTEMPERATUREBoth types include an internaltemperature sensor, which monitorsthe temperature variation of theelectric panel. This temperaturevalue is displayed and the maximumvalue is logged.By setting related parameters, a

threshold can be set to switch on arelay to operate a ventilationsystem.It is also possible to set a higherthreshold to generate anovertemperature alarm.







FOUR-QUADRANT OPERATIONWhen a plant is equipped with a co-generation system, it means there areconditions when energy is imported (consumed) and others when it isexported (generated).In these circumstances, the displacement angle between voltage andcurrent can vary between 0° and 360° (four quadrants) so the DCRK / DCRJmust be programmed accordingly.

Two independent cos set points, one for imported and the other forφexported energy, can be set.

GM







EASY CT SETTING The manufacturer of power factorcorrectionpanels can set all of the controller

parameters except the CT primary.Usually, the primary CT value is notknown and can vary from plant toplant.In this case, during the systeminstallation once the controller is

powered up, the display will show aflashing CT indicating the CT has notbeen programmed. The end-user is thereby informed thatthe CT must be programmed and caneasily do so by selecting from the

values automatically displayed by the







AUTOMATIC SET-UPAllows the installation of the controllerswithout programming any parameter.By pushing two keys simultaneously,

the controller can start working.

5s







KEYPAD LOCK The activation of this function is madeby a combination of keys.Once programmed, the following

operations will be locked:• Parameter set-up access

• COS set point changeφ

• Operating mode (AUT / MAN) change

• MAX values clearing

All the measure will however still beaccessible.

1° MODE

2° 3 x

3° 2 x







INTERFACE TTL / RS232 for DCRK or RS232/RS485 for DCRJBy using the DCRK SW or DCRJ SW software and the interface port, a

quick set-up of the controller can be achieved via PC, avoiding, in thisway, possible parameter setting errors. The programmed parameters can also be stored on the PC and quicklydownloaded into an unlimited number of units, which require the sameprogramming. The customising of alarm properties can be made as well as theautomatic panel testing including the power installed control and a test

51 C11 51 C2






DCRK SW – DCRJ SW SOFTWARES

Full system monitoring:

•Graphic and numericmeasurements display

•DCRK / DCRJ status

•Virtual front panel

For each step:

•Function

•Status.







MONITORING THE CAPACITOR EFFICIENCY

•Measure 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.







•Access to all setupparameters in four languages

•Save / Load / Print parameters

•Highlighted user changes

•Back-to-default button.







Alarm properties customisation

•Alarm enable

•Alarm relay activation

•Step disconnection

•Alarm trip delay.







•Automatic electric paneltesting.






DCRJ SW SOFTWARE

•Data-logger function.






DCRJ SW SOFTWARE

•Event log.






DCRJ SW SOFTWARE

•Graphic viewing of programmed values

•Viewing of harmonicsspectrum.






DCRJ SW SOFTWARE

•Graphic viewing of storedevents.





AUTOMATIC POWER FACTORAUTOMATIC POWER FACTORCONTROLLERSCONTROLLERSBFK TYPE CONTACTORS

7.5

12.5

15

20

25

30

38

45

50

60

0

10

20

30

40

50

60Power

(kvar)

B F K

0 9 A

B F K

1 2 A

B F K

1 8 A

B F K

2 6 A

B F K

3 2 A

B F K

3 8 A

B

F 5 0 K

B

F 6 5 K

B

F 7 0 K

B

F 8 0 K

kvar at 400V





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attention!

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