ICD PFC9055 User manual

1
POWER FACTOR CONTROLLER
MODEL - PFC9055
INDUSTRIAL CONTROLS & DRIVES (INDIA) PVT. LIMITED
New No: 33 Old No:10, Mettukuppam Road, (via) Alapakkam Road,
Maduravoyal, Chennai - 600 095.
Website: www.icdipl.com e-mail : [email protected]

2
INDEX
1. GENERAL FEATURE
2. ALARM FUNCTIONS
3. WIRING DIAGRAM
4. FRONT PANEL FEATURE
5. CONTROL OPERATIONS
6. PROGRAMMING INSTRUCTIONS
7. HEADING DISPLAY FORMATS
8. TECHNICAL SPECIFICATION

3
POWER FACTOR CONTROLLER
1.General Features
The Power Factor Controller PFC 9055 measures the power
factor (cosφφ
φφ
φ) and reactive power (kVAr) of power system and displays
them on a digital display. The power factor controller performs the
automaticconnectionanddisconnectionofcapacitorsinfunctionofthepower
factor and set point programmed.
Designed with latest state of art technology using micro controller, the
power factor controller becomes an intelligent equipment, able to
accurately measure the power factor and to take complex decisions for
switching on/off the capacitors.
The power factor controller performs the true R.M.S measurement of
reactive power and power factor including harmonics. The power
measurement is done for the full four quadrants. The power factor is
displayed on a 12.5 mm high visibility red LED display. Four keys are
provided on the front panel for programming purpose.
The power factor controller is provided with 12 output relays with the
possibilityof an additional alarm relay. Thepower factor controller is housed
in a PVC enclosure with the dimension of 144(H)x144(W)x150(D) mm
Installation
General consideration
The meter is panel mountable and fits into a cut out of 138 X 138 mm
dimension. Place the meter through the panel cut out and fix the mounting
clamps provided with the meter on each side of the meter. Tighten the fixing
clamps with limit amount of force so as to hold the meter firmly.
The power factor controller is used to measure power factor, when
mounted in instrument panels and is to be installed only by trained
electricians and technicians. The PT’s and CT’s used for measurement
should be of instrument class 1 or better for accurate measurement
results. Also PT’s and CT’s should have adequate VA rating to support the
burden on the secondaries.

4
The power factor controller must be protected by the fuses in each
voltage circuits. The current circuits must be provided with CT shorting
blocks to reduce the possibility of accidental disconnection. The CT
connections of the meter must not be disconnected while current is flowing
in the primary of the CT.
2. ALARMFUNCTIONS
ALARM - 01 = UNDER COMPENSATION
After all outputs are ON, required kVAr(Lag) >>
>>
> 70% of 1st
capacitorvalue, thealarm LEDwill beON andthe displayshows ALr01
ALARM - 02 = OVER COMPENSATION
After all outputs are OFF, required kVAr(Lead) >>
>>
> 70% of 1st
capacitorvalue, thealarm relaywill beON andthedisplay showsALr 02
ALARM-03=OVERVOLTAGEPROTECTION
Phase voltage >>
>>
> 115%of rated voltage,the alarmLED willbe ON
& step output are switched OFF and the display shows ALr 3r / y/ b
R,Y, B.
ALARM-04 = OVER CURRENT PROTECTION
Phase current >>
>>
> 110%of ratedcurrent, the alarmrelay willbe ON,
step relays are switched OFF and the display showsALr 4r/y / b.
Note
Index(#) keyis used toacknowledge thealarm relay.

5
NO 1 Output Relay - 1 NO 7 Output Relay 7
NO 2 Output Relay – 2 NO 8 Output Relay 8
NO 3 Output Relay – 3 NO 9 Output Relay 9
NO 4 Output Relay – 4 NO 10 Output Relay 10
NO 5 Output Relay – 5 NO 11 Output Relay 11
NO 6 Output Relay – 6 NO 12 Output Relay 12
COM - Relay common for 1 to 6 COM- relay common for 7 to 12
NC P NO relay contacts for Alarm
UPPER TERMINALS
R Three phase voltage input
Y 415 VAC For LT meters
B 110 VAC For HT meters
N
MIR
L
M Three phase current input
IY from external CT’s (1/5 A)
L
MIB
L
Voltage Signal connections
The power factor controller can accept voltages upto 415 VAC R.M.S
+10% to – 20% in case of LT meters and 110 VAC R.M.S +10% to – 20%
in case of HT meters. The voltage input terminals has a burden on auxiliary
power supply less than 10VA.

6
φ
M
L
φ
M
L
φ
M
L
CT
CT CT
Systemworks
normally
Load
Capacitor Capacitor
Load
Load
Capacitor
All the capacitors are
connected. The power
system may be over
compensated
None of the capacitors
are connected - No
compensationforPF
Rightconnection Wrongconnection Wrongconnection
Current signal connections
The power factor controller is provided with current input terminals to ac-
cept 1/5 A R.M.S from external CT’s. The CT secondary value is not field
programmable and has to be specified at the time of ordering. The current
inputs has a overload capability of 120% and has a burden on less than
0.5VA per phase.
The CT must be placed at any point on the entrance of the power system
where the whole current consumed by both load and capacitors can be
measured.

7
3. Wiring diagram for various
types of systems
a) Three phase four wire LTsystems (3 watt meter measurement)
Voltage Input : 415V AC RMS (L-L) (-20% to +10%)
Current Input : 5/1A provide through 3 CT’s
CT’s
R
Y
B
N
ML
246 8
ML
ML
124578
TOLoad
1/5Amp
110/415VAC
789
C C 10 11 12
C C NC P NO
ALARM
123456
NO NO NO NO NO NO
NO NO NONO NO NO
IR
IY
IB

8
WiringDiagram
b) Three phase four wire HT systems (3 watt meter measurement)
Voltage Input : 110VAC RMS (L-L) (-20% to +10%)
Current Input : 5/1A provided through 3 CT’s
CT’s
R
Y
B
N
ML
2468
ML
ML
124578
1/5Amp
110/415VAC
789
C C 10 11 12
C C NC P NO
ALARM
1234 56
NO NO NONO NO NO
NO NO NO NO NO NO
IR
IY
IB

9
WiringDiagram
C) TThreephasethree wire HT systems (2watt meter measurement)
Voltage Input : 110VAC (L-L)(ThroughPT)
Currentinput :5/1Aprovidedthrough2 CT’sWir
CT’s
R
Y
B
ML
2468
ML
12 78
1/5Amp
110/415VAC
789
C C 10 11 12
C C NC P NO
ALARM
1234 56
NO NO NONO NO NO
NO NO NO NO NO NO
45
IR
IB
IY

10
Cross checking the wiring
The three phase voltage wiring and current wiring are to be properly done
for the correct measurement. Any wrong connections done either during
installation or rewiring can produce wrong measurement.
The reverse condition occurs when the voltages R,Y & B are not con-
nected in proper sequence and also when the respective current is not given
according to its respective voltage.
To avoid any accidental wrong connections the PFC 9055 is provided
with a connection diagnostic page of display. If the display shows Ct niL
then there is no reverse flow otherwise the reversed phase is shown. While
checking the reverse condition, make sure that the load current is more than
5% of full load current.
Relay Output Connections
The power factor controller connects/disconnects the capacitors through
output relays. The relays are rated for 3Aat 240 VAC. So proper contactors
are to be used for switching the capacitors.