5
INSTALLATION
Turn the power off and reorient the CT by reversing the
black and white wires at the meter terminal block. Turn
the power on. If the kWH pulse light is not flashing and the
kW display does not show an increase, turn the power off
and put the CT on a different phase. Repeat the above
procedure until the kWH pulse light flashes and kW display
shows an increase.
The kWH pulse light should blink faster each time a CT is
added indicating an increase in measured power.
Ensure that the power is off and put the second CT on
phase B and verify that the kWH light is blinking faster and
the kW display shows an increase. If this does not occur
reorient the CT until the desired results are achieved.
Connect the final CT and verify that the kWH pulse light is
blinking faster and the kW display shows an increase.
5. CONNECT OUTPUTS TO AUTOMATION SYSTEM
kW (demand) output connection is non-polarity sensitive.
External power (DC voltage) must be supplied as shown
(note if DC voltage is not readily available at time of
start-up, two 9V batteries in series can be used to check
operation.
Wire kWH pulse output (This is not a load switching
output--see ratings in specifications).
6. POWER UNIT (TURN ON LOAD TO BE MONITORED)
kW 4-20 mA Loop continuity LED should light (if LOOP IS
connected).
kWH pulse LED will blink with each closure of output.
7. ADJUST THE UNDERVOLTAGE SET TO A DESIRED LEVEL.
The UNDERVOLTAGE SET allows you to set an alarm level
for low voltage situations. If it is set at 85% that means
that it will provide an alarm output if the voltage drops by
15%.
8. SELECT KWH MAX. PULSE RATE (IF USED)
Veris' handy pulse rate selector switch lets you choose the
pulse rate compatible with your panel--regardless of
voltage setting. The rate shown on the front of the unit
is the maximum the unit would produce when 100%
loaded.
9. DETERMINE KWH/PULSE FOR PROGRAMING YOUR
AUTOMATION PANEL.
EASY METHOD: Use TABLE 2 on page 7 if you are using
CT sizes shown and no external potential transformers.
METHOD B: Calculate as shown below:
KWH/Pulse = WH/Pulse x
I
/5 x PT Ratio (if used)
1000
KWH = KWH/Pulse x Pulse Count
(consumption)
Where:
WH/Pulse = Value from table one (following page)
I
= Maximum rated full scale of one CT in amps
Pulse Count = Accumulated pulses over period of time
PT Ratio = PT primary voltage divided by secondary voltage
Locate transducer within 30' of current transformers, in an area
accessible to qualified service personnel only . Transducer and/
or enclosure should be mounted using #10 screws. Unit is
intended for dry, indoor use only. The enclosure should be
secured with a padlock or nut and bolt.
1. METER SETUP
Connect the 4-20 mA loop and the pulse output as shown
on page two of the installation instructions. Set the MAX.
PULSE/SEC. switch to the test position and adjust the
UNDERVOLTAGE SET fully counter clockwise to the 75%
position.
2. SET VOLTAGE SELECTION SWITCH TO THE CORRECT
LINE-TO-LINE VOLTAGE.
!
Do not connect voltage inputs live!
Do not apply voltage until all connections are made.
Wires are normally 14 AWG. Terminals will accept 14-26
AWG. Wire strip length is .236" (6mm). Recommended
tightening torque 4.5 lbs. in.
If voltage exceeds 600 VAC, you will need to use
appropriately sized external potential transformer(s).
Consult Factory.
Fuse connections or utilize breakers per NEC. Fusing is
mandatory. (Current draw of unit is less than 50 mA).
NOTE: Fuses are rated 100 KAIC max. Sources capable of
delivering 100KA interrupt current require alternate fus-
ing. Always ensure fusing complies with local and
national electrical codes.
3. VOLTAGE CONNECTIONS
Ensure that the power is off and connect the three voltage
inputs one at a time. After connecting all three voltage
phases turn the power on and verify that the PHASE Loss/
Reversal On-Normal LED is illuminated. If the light is on
then the voltage wires are hooked up correctly. If the light
is not on the phasing is incorrect.
To correct the phasing, turn the power off and reverse the
position of the A and C voltage wires at the transducer.
Turn the power on, and verify that the PHASE Loss/Rever-
sal On-Normal LED is illuminated. If the LED does not light
up, consult the factory.
4. CURRENT TRANSFORMER INSTALLATION
Ensure that the power to the load is off. Connect and
verify the connection of the CT's one at a time. Connect the
phase "A" CT to the phase "A" voltage wire with the
arrows on the CT pointing towards the load, and turn the
power on. The kWH pulse light should flash and the kW
display should show an increase (with no CT's hooked up
the display will read 0). If the light does not come on and
the kW display does not show an increase, the phasing of
the CT is incorrect.
This can be caused by one of two things: either the CT is on
the wrong phase or it is not correctly orientated to the load.
