Kele PowerTrak Series User manual

July 1999
SHOWN WITH OPTIONAL DISPLAY
TM
A Kele Company
DESCRIPTION
The PowerTrak Series Power Monitoring Interface moni-
tors numerous power system parameters for local display
and/or remote connection to a BAS or other data acquisition
equipment. Any three-phase or single-phase 50/60 Hertz elec-
trical system from 120 to 600 volts can be monitored by the
PowerTrak without the need for potential transformers. Higher
voltage systems such as 5 kVolt or 15 kVolt services can also
be monitored using potential transformers. The PowerTrak is
available for use with 1 amp, 5 amp or 0.333 volt current trans-
formers. Options include a current transformer shorting
assembly and a digital LCD display.
Furnished in a NEMA 1 hinged cover enclosure with external
mounting feet and conduit knockouts on all sides, the
PowerTrak is simple to install. Setup of the PowerTrak is eas-
ily accomplished with a selector switch and DIP switches. A
truly unique feature of the PowerTrak is its ability to identify
and electronically correct wiring problems such as reversed
CT polarities or improper phasing of voltages with CT's.
FEATURES
• Auto-corrects for wiring errors
• Three-phase (Wye or Delta) or single-phase systems
• Voltage selector switch (120-600V)
• Accepts 5 amp, 1 amp or 0.333 Volt CT’s
• Low voltage alarm contact
• Two 4-20 mA outputs
• Pulse output for KWH with selectable pulse rate
• Optional two line LCD display
• Optional unique CT shorting assembly
• Easily installed enclosure with external mounting feet
• Optional LonWorks communications
APPLICATION
PowerTrak Applications:
Remote (Outputs) & Local (Display) Monitoring
KWH Total KW
Window KW Peak Window KW
Total KVA Total Power Factor (PF)
True RMS Voltage True RMS Current
Local (Display) Monitoring - Each Phase
True RMS Voltage
True RMS Current
KW (Wye systems)
KVA (Wye systems)
Power Factor (Wye systems)
Inputs:
System type Three-phase (Wye or Delta),
Single-Phase
Input voltage 120 to 600 VAC
Frequency 50/60 Hz
Input current 0-5 amp or 0-1 amp or 0-0.333 volts
CT Burden 0.75 VA maximum (1A or 5A inputs)
PT Burden 4.8 VA maximum
Fusing 0.5 A, 600 V (KLK-0.5)
Outputs:
Pulse output Pulsed contact closure for KWH
Solid state relay, 50 VAC/DC max,
100 mA max
Pulse rate Four selectable KWH per pulse
rates, 50% duty cycle
Maximum pulse rate Five pulses per second
Contact output Maintained contact closure for
low voltage alarm
50 VAC/DC, 100 mA max
Analog outputs Two (2) externally powered
4-20 mA signals selectable
for total KW, window KW,
peak window KW, total power factor,
total KVA, RMS current*, or
RMS voltage*
Analog output max load 725 ohms each output @ 24 VDC
Analog output power External 24 VDC @ 60 mA max
Accuracy 0.75%ofF.S.(KW,KVA,VOLTS,AMPS)
±0.03 PF (40 to 100% F.S. power)
Operating temperature 32° to 122°F (0 to 50°C)
Humidity 5-95% noncondensing
Display option LCD, Two lines, 16 characters/line
Dimensions 12"H x 10"W x 4"D
(30.5 cm x 25.4 cm x 10.2 cm)
Weight 12 lbs (5.5 kg)
Approvals UL and CUL listed, file #E161500
* Voltage and current outputs are the average of the three-
phase true RMS values.
SPECIFICATIONS
R
R
C
TM
KELE • www.kele.com • FAX [phone] USA 901-937-4900 • International 901-382-6084
POWERTRAK POWER MONITORING INTERFACE
PT-9000 SERIES
SOLUTIONS
rev. 5/98

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PowerTrak Installation:
Using the external mounting feet, secure the PowerTrak to a wall surface using the proper mounting hardware for
the type of wall construction involved. Pull the conduit and wiring runs through any of the eight 1/2'' knock-outs into
the enclosure and tag (identify) per job drawings. To avoid electrical noise and interference, the signal output wiring
should be kept separated from the line voltage and current transformer wiring.
Current Transformer (CT) Installation:
All CT’s should be installed with the side of the transformer labeled “H1” facing the incoming power to maintain
proper CT polarity. Connect the CT wiring to the CT INPUTS terminal block as shown in the PowerTrak wiring dia-
grams (Figures 1 & 2). If the PowerTrak is equipped with the CT shorting Assembly Option, see instructions below.
A pair of wires for each CT is required as shown in the wiring diagrams or a common CT return wire can be used
with 1 amp or 5 amp CT’s. When using the SCT Series of current transformers with the PT-9300, recommended
wiring is a twisted shielded pair for each CT to avoid noise pick-up. Ground the shield wire at the PT-9300 ground
lug only. The output from each CT should be wired to be in phase with its respective voltage. For example, the CT
installed on Phase-A is connected to the Phase-A CT input terminals X1 and X2, and the system voltage connection
from Phase-A should be to terminal L1.
Current Transformer (CT) Shorting Assembly Option:
The CT Shorting Assembly Option provides a simple and convenient means of shorting 1 amp or 5 amp current
transformer secondaries should there be a requirement to take the PowerTrak out of service. This option is
installed by securing the Shorting Assembly pins to the PowerTrak CT INPUTS terminal block, and securing the
Shorting Assembly board to the stand-offs on the PowerTrak circuit board. All CT wiring connections should be
made to the terminal strip on the Shorting Assembly Option board. A pair of wires for each CT is required as shown
in the wiring diagrams or a common CT return wire can be used. The current from each CT should be wired to be in
phase with its respective voltage. For example, the CT installed on Phase-A is connected to the Phase-A CT input
terminals X1 and X2, and the system voltage connection from Phase-A should be to terminal L1. With the shorting
assembly jumper plugs in the SHORT position, the corresponding CT secondary is shorted. With the jumper plugs
in the NORM position, the CT secondary can be read by the PowerTrak. The jumper plugs should be placed in the
SHORT position before the shorting assembly is disconnected from the PowerTrak.
Current Transformer (CT) Installation Note: When using current transformers with small burden (load) capability (typically CT's with
ratios below 200:5), the CT secondary wiring can add significantly to the burden that must be supported by the CT. For these applica-
tions, consideration should be given to the distance between the PowerTrak and the current transformers as well as to the gauge of
the CT wiring. Refer to the Technical Reference section in the Kele catalog for more information on burden or call Kele.
Summing Current Transformers: When wiring summing CT’s, proper CT polarity and phasing with voltages must be observed. The
PowerTrak Auto-Configuration and Manual Configuration functions cannot be used with summing current transformers.
System Voltage Connections:
The system voltage connections are made to the PowerTrak terminal strip labeled SYSTEM VOLTAGE CONNEC-
TIONS. System voltages up to 600 volts can be connected directly to this terminal strip. For system voltages greater
than 600 volts, potential transformers can be used. The system voltage terminal strip is pluggable allowing for easier
wiring installation and/or removal of the PowerTrak from service. For three-phase systems refer to Figure 1 for
wiring details. Three-phase wye systems should have the neutral line connected to the PowerTrak. For single-
phase systems refer to Figure 2 for wiring details. Each system voltage connection should be wired to be in phase
with its respective CT input.
Input Wiring Installation Note:
For safety reasons, the electrical system should be de-energized before installing current transformers and making
voltage connections. Care should be taken when wiring the CT and system voltage inputs to the PowerTrak in
order to maintain proper CT polarity and proper phasing between the CT’s and system voltage connections. In the
event of inadvertent wiring errors such as reversed polarity CT’s or incorrect phasing of voltages with CT’s, the
PowerTrak auto-configuring system is used to electronically “correct” the errors and provide accurate output data.
The auto-configuring system eliminates the time consuming troubleshooting and the trial and error wire swapping
required with other power monitors.
INSTALLATION
CAUTION: Open circuiting the secondary leads of a 1 amp or 5 amp secondary current transformer under load
can cause hazardous voltages which can injure personnel or damage equipment. Maintain a shorted circuit
across the secondary leads whenever the current transformer is not connected to the PowerTrak transducer. The
PowerTrak shorting assembly option or an externally mounted U3889 switch is recommended.
2

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Output Connections:
Analog (4-20mA) Outputs
The PowerTrak provides two separate 4-20 mA analog signal outputs. Each output can individually be set by DIP
switches to represent a different parameter. Both 4-20 mA output loops require an external 24 VDC power supply
and polarity should be observed. See Figures 1 and 2 for wiring diagrams. The “LOOP 1 UP” and “LOOP 2 UP”
LED's will vary in intensity with the signal when a valid current loop is connected in series with these outputs. If
these LED's are "OFF" there is an open circuit in the current loop.
Digital Outputs
The PowerTrak provides a KWH pulse output and a low voltage alarm output. Both outputs are solid state relays
rated for 50 VAC/DC 100 mA maximum. See Figures 1 and 2 for wiring diagrams. When driving a DC relay coil, a
reverse connection protection diode (like 1N4004) is recommended across the relay coil. If driving an AC relay coil,
a varistor across the relay coil is recommended (like V39ZA1). The ”KWH PULSE“ LED is “ON” when the KWH
pulse contact is closed and “OFF” when the contact is open. The ”SYS VOLTS OK“ LED is “ON” when all phase
voltages are above the low voltage alarm settings. The LED is ”OFF“ when any phase voltage drops below the low
voltage alarm setting.
PowerTrak Communications
The PowerTrak can be supplied with an optional communications module allowing access to all of the monitored
parameters. Refer to the data sheet supplied with the communications module for information on wiring, protocols,
etc.
INSTALLATION - Continued
The PT-9000 may be ordered with an optional two line, 16 character, alpha-numeric LCD display for local monitor-
ing of power parameters. Each line of the display can be manually scrolled with the yellow, cover mounted buttons
to view up to 23 different displayed parameters. No calibration of the display is required. When using potential trans-
formers on systems greater than 600V, multiply KW, KWH, KVA and VOLT displayed values by the PT ratio to get
the correct parameter value. PT ratio=Primary/Secondary. Example: 4800V/120V=40
DISPLAYED PARAMETERS BY SYSTEM TYPE
3-Phase Delta 3-Phase Wye 1-Phase, 2-Wire 1-Phase, 3-Wire
TOTAL KW TOTAL KW TOTAL KW TOTAL KW
WINDOW KW WINDOW KW WINDOW KW WINDOW KW
WIN PK KW (Peak) WIN PK KW (Peak) WIN PK KW (Peak) WIN PK KW (Peak)
KWH KWH KWH KWH
L-L AVG V* “A” KW L1-N VOLT “A” KW
L1L2 VOLT “B” KW “A” AMPS “B” KW
L2L3 VOLT “C” KW TOTAL KVA L-N AVG V*
L3L1 VOLT L-N AVG V* TOTAL PF L1-N VOLT
AVG AMPS* L1-N VOLT L2-N VOLT
“A” AMPS L2-N VOLT AVG AMPS*
“B” AMPS L3-N VOLT “A” AMPS
“C” AMPS AVG AMPS* “B” AMPS
TOTAL KVA “A” AMPS TOTAL KVA
TOTAL PF “B” AMPS “A” KVA
“C” AMPS “B” KVA
TOTAL KVA TOTAL PF
“A” KVA “A” PF
“B” KVA “B” PF
“C” KVA
TOTAL PF
“A” PF
“B” PF
“C” PF * Voltage and amps displayed values are the average of the true RMS phase values.
KWH and Peak Window KW Reset
The KWH display value can be reset to zero by pressing the CLEAR KWH COUNT button inside of the PowerTrak.
The peak window KW value can be reset to zero by pressing the CLEAR PEAK KW button inside of the PowerTrak
or by momentarily interrupting power to the current loop connected to MA OUT 2 terminals.
POWERTRAK LCD DISPLAY OPTION
3

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DIP SWITCHES
Setting the DIP switches according to system requirements is suggested before applying power to the PowerTrak. However, it is
not necessary to remove power from the PowerTrak in order to make changes to the DIP switch settings.
A1 - A2: Define the power system type. Set these switches to match the type of system that is to be monitored. Select from
3-Phase wye or delta and single-phase 2-wire or 3-wire systems. See Table 1 for switch settings.
A3 - A8: Define the low voltage alarm threshold. Select an appropriate value for the system voltage that is monitored.
For delta systems, low voltage is measured line-to-line. For wye and single-phase systems, low voltage is measured
line-to-neutral. Select from alarm threshold values ranging from 51 to 540 volts. See Table 2 for switch settings
B1 - B2: Define the KWH per pulse value. Set these switches to obtain an optimum pulse rate that can be read by the BAS
controller or data acquisition equipment. Select from 10, 1, 0.1, and 0.01 KWH per pulse values. See Table 3 for
switch settings.
B3 - B5: Define mA loop #2 signal type. Set these switches for the power parameter to be represented by this
4-20 mA output. Select from seven different parameters, Total KW, Window KW, Peak Window KW, Total KVA,
Total Power Factor, True RMS Voltage*, True RMS Current*. See Table 4 for switch settings.
B6 - B8: Define mA loop #1 signal type. Set these switches for the power parameter to be represented by this
4-20 mA output. Select from seven different parameters, Total KW, Window KW, Peak Window KW, Total KVA,
Total Power Factor, True RMS Voltage*, True RMS Current*. See Table 4 for switch settings.
C1 - C5: Define the current transformer ratio. Set switches to match the primary current rating of the current transformers con-
nected to the PowerTrak. Select from CT primaries ranging from 50 to 6000. See Table 5 for switch settings.
* Voltage and current outputs are the average of the three-phase true RMS values.
SYSTEM VOLTAGE SELECT SWITCH
Set the SYSTEM VOLTAGE SELECT switch to the correct line-to-line system voltage (or potential transformer secondary volt-
age, if used) connected to the PowerTrak. If the actual system voltage is greater than the selector switch setting, the over volt-
age LED will flash and the PowerTrak will cycle on and off to protect itself from over voltage. If this occurs, turn the selector
switch to the correct system voltage setting.
AUTO-CONFIGURATION
After all wiring connections are completed, the DIP switches are set correctly, the voltage selector switch is set to the correct sys-
tem voltage, and the electrical system is energized, the PowerTrak can be auto-configured. To initiate the auto-configuring system,
press the AUTO-CONFIG button. The PowerTrak will examine the current and voltage waveforms for correct phasing and CT polar-
ity. During the auto-configuring process, the Volts/Amps phasing LED’s and CT reverse polarity LED’s will light in sequence. When
the process is completed only one of the Volts/Amps phasing LED’s will be lighted indicating the actual phasing between the voltage
and current inputs to the PowerTrak. A lighted CT polarity LED indicates that the corresponding CT is installed or wired backwards
giving a reverse polarity. A correctly wired PowerTrak will be indicated by all CT polarity LED’s extinguished and the left most
Volts/Amps phasing LED lighted. Should any of the other phasing or CT polarity LED’s be lighted, the PowerTrak will electronically
“fix” the wiring errors and provide correct and accurate outputs. No time consuming troubleshooting or wire swapping is required.
Note: The Auto-Configuration and Manual Configuration functions cannot be used with summing current tranformers. Proper wiring
of CT’s and voltages must be observed when using summing CT’s.
If the auto-configuring system is unable to determine the correct wiring configuration, the PowerTrak will enter the manual con-
figuration mode and the manual config yellow LED will light. If this occurs, try initiating the auto-configuring system again, by
pressing the Auto-config button. If the manual config yellow LED lights again then check the following:
1. Verify all switch settings on the PowerTrak are correct for the monitored electrical system.
2. Verify all phase voltages are present at the SYSTEM VOLTAGE terminal block using a voltmeter and/or the PowerTrak dis-
play option.
3. Verify all Current Transformer inputs are present at the CT INPUTS terminal block using a clamp on ammeter and/or the
PowerTrak display option. Current transfomer secondary wires (X1 & X2) should be connected to the PowerTrak in pairs.
NOTE: For the auto-configuring system to function properly, these four conditions should be met:
1. Load amperage must be above 5% of the CT primary rating.
2. The system power factor must be greater than 0.64 lagging.
3. The power factor should not be leading.
4. The power system waveform does not have severe harmonic distortion.
After checking these items and making any corrections, press the AUTO-CONFIG button again. If the PowerTrak is still unable
to determine the correct wiring configuration, Manual Configuration will be required.
MANUAL CONFIGURATION
The electrical system load should be relatively constant during the manual configuration procedure. To manually configure the
PowerTrak, set the DIP switches so that one of the 4-20 mA outputs represents Total KW. Connect a meter set to read DC milliamps to
this output, or if the PowerTrak has the LCD display option, set one of the display lines to read Total KW. Next, press the manual config
CT polarity button (CT POL) to scan through the different CT polarity combinations. Each time record the reading of theTotal KW display
or mA output. Allow the reading to stabilize before recording it. After reviewing all of the CT polarity combinations, press the manual con-
fig V-A MATCH button and repeat the process of scanning through the CT polarity combinations. After trying all possible combinations of
V-A match and CT polarity (there are 48 possible combinations, see the manual configuration worksheet) the correct configuration is the
one producing the highest value of KW on the display or the highest mA reading on the meter. Manually set the PowerTrak to the cor-
rect configuration using the CT POL & VA MATCH push buttons.
POWERTRAK CONFIGURATION

V-A MATCH
LED's CT POL LED's KW or mA V-A MATCH LED's CT POL LED's KW or mA V-A MATCH LED's CT POL LED's KW or mA
Power System Type Switch A1 Switch A2
3-Phase Delta Off Off
3-Phase Wye Off On
1-Phase 2-Wire On Off
1-Phase 3-Wire On On
TABLE 1 POWER SYSTEM TYPE
MANUAL CONFIGURATION WORKSHEET
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5
Low Volts Threshold Switch A3 Switch A4 Switch A5 Switch A6 Switch A7 Switch A8
51 Off Off Off Off Off Off
54 Off Off Off Off Off On
55 Off Off Off Off On Off
57 Off Off Off Off On On
59 Off Off Off On Off Off
62 Off Off Off On Off On
66 Off Off Off On On Off
88 Off Off Off On On On
92 Off Off On Off Off Off
94 Off Off On Off Off On
96 Off Off On Off On Off
98 Off Off On Off On On
99 Off Off On On Off Off
102 Off Off On On Off On
104 Off Off On On On Off
106 Off Off On On On On
108 Off On Off Off Off Off
111 Off On Off Off Off On
113 Off On Off Off On Off
114 Off On Off Off On On
116 Off On Off On Off Off
118 Off On Off On Off On
123 Off On Off On On Off
125 Off On Off On On On
130 Off On On Off Off Off
160 Off On On Off Off On
170 Off On On Off On Off
176 Off On On Off On On
180 Off On On On Off Off
184 Off On On On Off On
185 Off On On On On Off
187 Off On On On On On
192 On Off Off Off Off Off
197 On Off Off Off Off On
200 On Off Off Off On Off
204 On Off Off Off On On
207 On Off Off On Off Off
213 On Off Off On Off On
216 On Off Off On On Off
222 On Off Off On On On
225 On Off On Off Off Off
229 On Off On Off Off On
236 On Off On Off On Off
249 On Off On Off On On
277 On Off On On Off Off
TABLE 2 LOW VOLTS ALARM THRESHOLD NOTE: For Wye and single phase systems, low voltage is measured line-to-neutral. For Delta
systems, low voltage is measured line-to-line.

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CT Primary Switch C1 Switch C2 Switch C3 Switch C4 Switch C5
5Off Off Off Off Off
50 Off Off Off Off On
75 Off Off Off On Off
100 Off Off Off On On
150 Off Off On Off Off
200 Off Off On Off On
250 Off Off On On Off
300 Off Off On On On
400 Off On Off Off Off
500 Off On Off Off On
600 Off On Off On Off
750 Off On Off On On
800 Off On On Off Off
1000 Off On On Off On
1200 Off On On On Off
1500 Off On On On On
1600 On Off Off Off Off
2000 On Off Off Off On
2500 On Off Off On Off
3000 On Off Off On On
3500 On Off On Off Off
4000 On Off On Off On
5000 On Off On On Off
6000 On Off On On On
mA Output #2 mA Output #1
Signal Selected for mA Output Switch Switch Switch Switch Switch Switch
B3 B4 B5 B6 B7 B8
Total KW Off Off Off Off Off Off
15- minute Sliding Window KW Off Off On Off Off On
Peak Sliding Window KW Off On Off Off On Off
Total KVA Off On On Off On On
Total Power Factor On Off Off On Off Off
RMS Current On Off On On Off On
RMS Voltage On On Off On On Off
KWH Per Pulse Switch B1 Switch B2
0.01 Off Off
0.1 Off On
1 On Off
10 On On
TABLE 4 mA OUTPUT SIGNAL SELECTIONS
TABLE 5 CT RATIO SELECTIONS (5 Amp or 1 Amp or 0.333 Volt CT’s)
Low Volts Threshold Switch A3 Switch A4 Switch A5 Switch A6 Switch A7 Switch A8
294 On Off On On Off On
304 On Off On On On Off
312 On Off On On On On
321 On On Off Off Off Off
332 On On Off Off Off On
341 On On Off Off On Off
353 On On Off Off On On
360 On On Off On Off Off
374 On On Off On Off On
384 On On Off On On Off
396 On On Off On On On
408 On On On Off Off Off
432 On On On Off Off On
480 On On On Off On Off
510 On On On Off On On
540 On On On On Off Off
TABLE 3 KWH PER PULSE
Table 2 - continued

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7
X2 X1
X2 X1
X2 X1
H1
H1
H1
CT
CT
CT
L1 (AØ)
L2 (BØ)
L3 (CØ)
NEUTRAL (If Wye System)
L
I
N
E
L
O
A
D
CT H1 should face
Line side
Neutral
(If Wye
system)
L3 L2 L1
CTC
X2 X1 CTB X2 X1 CTA X2 X1
CTC
X2 X1 CTB X2 X1 CTA X2 X1
12345678 12345678 12345
PWR SYS
TYPE
LOW
VOLTS
THRESHOLD
DIPSWITCH A
CT INPUTS
TERMINAL BLOCK SYSTEM VOLTAGE
CONNECTIONS
NEUTRAL L3 L2 L1
Optional Potential Transformer
For Voltages Above 600 V (See PT Wiring)
346-415 V
440-480 V
OFF
CLEAR
PEAK
KW
CLEAR
KWH
COUNT
KWH/PULSE
mA OUT 2
SIGNAL
SELECT
mA OUT 1
SIGNAL
SELECT
CT RATIO
SELECT
DIPSWITCH BDIPSWITCH C
1 2 3
A B C
1 2 3
A B C
1 2 3
A B C
1 2 3
A B C
1 2 3
A B C
1 2 3
A B C
CT
A
REVERSE
POLARITY
CT
B
REVERSE
POLARITY
CT
C
REVERSE
POLARITY
VOLTS
AMPS
AUTO
CONFIG MANUAL
CONFIG
V-A MATCH CT POL
SYS VOLTS OK KWH PULSE LOOP 2 UP LOOP 1 UP
SYS VOLTS OK KWH PULSE MA OUT 2 MA OUT 1
– + – +
–+ – – +
+
LOW VOLTAGE
ALARM OUTPUT
NOTE: CLOSES ON ALARM
KWH PULSE
OUTPUT
4-20 mA
OUTPUT #2
24 VDC
POWER
SUPPLY
4-20 mA
OUTPUT #1
OVER VOLTS
LED
X2 X1 X2 X1 X2 X1
A
NORM
SHORT
B
NORM
SHORT
C
NORM
SHORT
OPTIONAL CT SHORTING
ASSEMBLY DETAIL
SYSTEM VOLTAGE
SELECT SWITCH
600 V
120-144 V190-277 V
MAKE CT CONNECTIONS
TO THESE TERMINALS
CTC CTB CTA
CT shorting jumpers shown
in the normal position
CT shorting assembly pins
secured to PT-9000 CT Inputs
Terminal Block
PT-9000
SERIES
OPTIONAL COVER MOUNTED
LCD DISPLAY DETAIL*
*Manually scroll individual lines of display using the cover mounted
pushbuttons, to select different power system parameters.
LOCATION
OF
OPTIONAL
COMMUNICATIONS
MODULE
111
1When using the SCT Series current
transformers with the PT-9300,
recommended wiring is a twisted
shielded pair for each CT to avoid
noise pick-up. Ground shield wire at
PT-9300 ground lug only.
Fig. 1 - WIRING - 3-PHASE POWERTRAK APPLICATION
Connection option using
one open delta 3PT3 3-Phase Potential
Transformer with 120 VAC secondary.
POTENTIAL TRANSFORMER
H-3
H-2
X-3
X-2
H-1
X-1
A
B
C
Fuse per N.E.C.
for conductor
size & type.
L-3
L-2
L-1
L
O
A
D
PT WIRING OPTION
(FOR SYSTEMS GREATER THAN 600V)
CAUTION: Lethal voltages
may be present across the
secondary terminals of 1
amp and 5 amp secondary
current transformers. Keep
these terminals shorted or
connected to the transducer.

ANALOG (4-20 mA) OUTPUTS
The PowerTrak provides two separate 4-20 mA analog signal outputs. Each output can individually be set by DIP
switches to represent a different power parameter. Select from Total KW, Window KW, Peak Window KW, Total
KVA, Total Power Factor, True RMS Voltage, and True RMS Current. See Table 4 for DIP switch settings. The
“LOOP 1 UP” and “LOOP 2 UP” LED’s will be “ON” when a valid current loop is connected in series with these out-
puts. If these LED’s are “OFF” there is an open circuit in the current loop. Both 4-20mA output loops require an
external 24 VDC power supply.
Total KW
The Total KW parameter is the total instantaneous KW demand for a three-phase or single phase electrical system.
Window KW
The Window KW parameter is a fifteen minute sliding window average of KW demand. The sliding window KW
value is updated on thirty second intervals with the KW data from the oldest interval constantly being replaced by
the KW data from the most recent interval.
Peak Window KW
The Peak Window KW parameter represents the highest (peak) sliding window KW value measured by the
PowerTrak. The peak window KW value is updated on thirty second intervals and will change in value only if the
current sliding window KW value is greater than the current peak window KW value.
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8
X2 X1
H1
CT
L
N
L
N
L
I
N
E
L
O
A
D
CT H1 should face
Line side
CTC
X2 X1 CTB X2 X1 CTA X2 X1
CT INPUTS SYSTEM VOLTAGE
CONNECTIONS
NEUTRAL L3 L2 L1
No
Connection No Connection No
Connection
No
Connection
No
Connection
JUMPER
X2 X1
H1
CT
L1
N
L1
X2 X1
H1
CT
L2 L2
N
L
I
N
E
L
O
A
D
CT H1 should face
Line side
CTC
X2 X1 CTB X2 X1 CTA X2 X1
CT INPUTS SYSTEM VOLTAGE
CONNECTIONS
NEUTRAL L3 L2 L1
SINGLE-PHASE 3-WIRE SYSTEMS
SINGLE-PHASE 2-WIRE SYSTEMS
*
*
* *
Make CT connections
to terminal strip on optional
CT shorting assembly if
present. See Fig.1
*Make CT connections
to terminal strip on optional
CT shorting assembly if
present. See Fig.1
1When using the SCT Series
current transformers with the
PT-9300, recommended wiring
is a twisted shielded pair for
each CT to avoid noise pick-up.
Ground shield wire at
PT-9300 ground lug only. 1
1
1When using the SCT Series
current transformers with the
PT-9300, recommended wiring
is a twisted shielded pair for
each CT to avoid noise pick-up.
Ground shield wire at
PT-9300 ground lug only.
Fig. 2 - WIRING - SINGLE-PHASE POWERTRAK APPLICATIONS
EQUATIONS

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KW Equations (Total, Window, or Peak Window)
Three-phase equation: Single-phase equation:
KW = E x I x 1.73 x (mA out - 4) KW = E x I x (mA out - 4)
1000 x 16 1000 x 16
Where,
KW = Total, Window or Peak Window KW value
E = 144 (SYSTEM VOLTAGE SELECT switch set to 120 - 144 V)
= 277 (SYSTEM VOLTAGE SELECT switch set to 190 - 277 V)
= 415 (SYSTEM VOLTAGE SELECT switch set to 346 - 415 V)
= 480 (SYSTEM VOLTAGE SELECT switch set to 440 - 480 V)
= 600 (SYSTEM VOLTAGE SELECT switch set to 600 V)
= Primary value of potential transformer (For systems greater than 600 volts)
I = Primary value of the CT ratio selected with DIP switches C1-C5. (ex. I = 500 for 500:5 ratio)
mA out = PowerTrak milliamp output value
Total KVA
The Total KVA parameter is the total instantaneous KVA demand for a three-phase or single phase electrical system.
Three-phase equation: Single-phase equation:
KVA = E x I x 1.73 x (mA out - 4) KVA = E x I x (mA out - 4)
1000 x 16 1000 x 16
Where,
KVA = Total KVA value
E = 144 (SYSTEM VOLTAGE SELECT switch set to 120 - 144 V)
= 277 (SYSTEM VOLTAGE SELECT switch set to 190 - 277 V)
= 415 (SYSTEM VOLTAGE SELECT switch set to 346 - 415 V)
= 480 (SYSTEM VOLTAGE SELECT switch set to 440 - 480 V)
= 600 (SYSTEM VOLTAGE SELECT switch set to 600 V)
= Primary value of potential transformer (For systems greater than 600 volts)
I = Primary value of the CT ratio selected with DIP switch C1-C5. ( ex. I = 500 for 500:5 ratio)
mA out = PowerTrak milliamp output value
Total Power Factor
The Total Power Factor parameter is a measure of the power factor (0 to 1) for a three-phase electrical system.
PF = 1 x (mA out - 4)
16
Where,
PF = Total Power Factor
mA out = PowerTrak milliamp output value
EQUATIONS - continued

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True RMS Voltage
The True RMS Voltage parameter is an average of the three true RMS phase to phase voltages for Delta systems.
For Wye systems this parameter is an average of the three true RMS line to neutral voltages.
Volts = Emax X (mA out -4)
16
Where,
Volts = True RMS Voltage output
Emax = 170 (SYSTEM VOLTAGE SELECT switch set to 120 - 144 V)
= 320 (SYSTEM VOLTAGE SELECT switch set to 190 - 277 V)
= 470 (SYSTEM VOLTAGE SELECT switch set to 346 - 415 V)
= 550 (SYSTEM VOLTAGE SELECT switch set to 440 - 480 V)
= 700 (SYSTEM VOLTAGE SELECT switch set to 600 V)
= Primary value of potential transformer multiplied by 1.42 (For systems greater than 600 volts)
mA out = PowerTrak milliamp output value for True RMS Voltage
True RMS Current
The True RMS Current parameter is an average of the three true RMS values of the three-phase currents.
Current = CT Primary X (mA out - 4)
16
Where,
Current = True RMS Current
CT Primary = Primary value of the CT ratio selected with DIP switch C1-C5. ( ex. CT ratio = 500 for 500:5 ratio)
mA out = PowerTrak milliamp output value for True RMS Current
DIGITAL OUTPUTS
KWH Pulse Output
The PowerTrak provides a contact closure pulse output representing energy consumption (KWH). By setting the
appropriate DIP switches (B1-B2, See Table 3) each pulse will represent either 10, 1, 0.1 or 0.01 KWH per pulse.
The ”10“ KWH per pulse setting produces the slowest pulse rate and the ”0.01“ KWH per pulse setting produces the
fastest pulse rate. Select a KWH per pulse setting that produces a pulse rate that can be read by the building
automation controller (or other data acquisition equipment) and will not exceed five pulses per second at the maxi-
mum expected KW value. See KWH equations. The ”KWH PULSE“ LED is ”ON“ when the KWH pulse contact is
closed and ”OFF“ when the contact is open.
KWH equations:
Three phase and single phase equation:
KWH = N x KWH per pulse x PT Ratio (If used)
Where,
N = total number of pulses accumulated at the controller input
KWH per pulse = KWH per pulse setting at DIP switches B1-B2 (See Table 3).
PT Ratio=PT Primary/PT Secondary. Example: 4800V to 120V PT Ratio=4800/120=40
EQUATIONS - continued

Three-phase equation:
PULSE/SECOND = E x I x 1.73 X _____1____________
1000 x 3600 KWH/pulse x PT Ratio (If used)
Single-phase equation:
PULSE/SECOND = E x I X _______1 ___________
1000 x 3600 KWH/pulse x PT Ratio (If used)
Where,
PULSE/SECOND = Number of pulses per second the PowerTrak will produce at a given KWH/pulse setting and KW
demand maximum value. If greater than five pulses per second select a larger value KWH per pulse setting with DIP
switches B1-B2 (See Table 3).
E = 144 (SYSTEM VOLTAGE SELECT switch set to 120 - 144 V)
= 277 (SYSTEM VOLTAGE SELECT switch set to 190 - 277 V)
= 415 (SYSTEM VOLTAGE SELECT switch set to 346 - 415 V)
= 480 (SYSTEM VOLTAGE SELECT switch set to 440 - 480 V)
= 600 (SYSTEM VOLTAGE SELECT switch set to 600 V)
= Primary value of potential transformer (For systems greater than 600 volts)
I = Primary value of the CT ratio selected with DIP switch C1-C5. ( ex. I = 500 for 500:5 ratio)
KWH/pulse = KWH per pulse setting from DIP switches B1-B2 (See Table 3).
PT Ratio=PT Primary/PT Secondary. Example: 4800V to 120V PT Ratio=4800/120=40
Low Voltage Alarm Contact (SYS VOLTS OK)
The Low Voltage Alarm Contact is a normally open contact that closes when any phase voltage drops below the low
voltage alarm setting determined by DIP switches A3-A8 (See Table 2). Voltage is measured line-to-line on delta
systems and line to neutral on wye systems and single-phase. There is an approximate 2-4 second time delay to
prevent nuisance trips of the alarm contact. The “SYS VOLTS OK” LED is “ON” when all phase voltages are above
the low voltage alarm setting. The LED is “OFF” when any phase voltage drops below the low voltage alarm setting.
Contact Open = All phase voltages above low-voltage alarm setting.
Contact Closed = All phase voltages below the low-voltage alarm setting.
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EQUATIONS - continued
AREA FOR CALCULATION AND NOTES

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ORDERING INFORMATION
PT-9500 PowerTrak Power Monitoring Interface, 5 Amp CT Input
PT-9300 PowerTrak Power Monitoring Interface, 0.333 Volt CT Input
PT-9100 PowerTrak Power Monitoring Interface, 1 Amp CT Input
Options
D LCD Display, Cover Mounted For Local Monitoring
S CT Shorting Assembly (Not Necessary For PT-9300)
3R PowerTrak Mounted In A NEMA 3R Enclosure
Example: PT-9500-D-S PowerTrak with LCD display and
CT shorting assembly
PT-9500 DS
Related Products
PT-NTL-10 LonWorks Commuications Module
AL12AR Cylinder Lock Kit
U3889-E Shorting/disconnect assembly
____ 1. Mount the PowerTrak using the proper hardware for the type of wall construction involved. Pull the conduit
and wiring to any of the eight 1/2" knockouts.
____ 2. With the electrical system de-energized, make all CT and voltage connections per instructions.
____3. Make wiring connections to the output signal terminals for the KWH pulse, low-voltage alarm contact, and both
4-20 mA signals (if used).
____4. If the shorting assembly option is installed on the PowerTrak, place the shorting jumpers in the NORM
position.
____5. Set the SYSTEM VOLTAGE SELECT switch to the line-to-line voltage of the electrical system to be monitored.
____6. Set the Power System Type, DIP switches A1-A2.
____7. Set the Low Voltage Alarm Threshold, DIP switches A3-A8.
____8. Set the KWH/Pulse rate (if used), DIP switches B1-B2
____9. Set the mA output #2 for the desired parameter (if used), DIP switches B3-B5.
___10. Set the mA output #1 for the desired parameter (if used), DIP switches B6-B8.
___11. Set the CT ratio for the current transformer primary rating used. DIP switches C1-C5.
___12. With the electrical system energized and under load, press the AUTO-CONFIG button to auto-configure the
PowerTrak. After scanning the electrical connections the auto-config LED's will display the actual electrical
connections to the PowerTrak, electronically ”correct“ wiring errors, and provide accurate output signals. If the
MANUAL CONFIG LED lights, follow instructions in this data sheet.
___13. If equipped with the display option, verify that all parameters display a value.
___14. Verify that all output signals used are working properly.
If you have any questions, call Kele at 901-937-4900, FAX [phone] or e-mail [email protected].
POWERTRAK INSTALLATION CHECKLIST