6
10. DETERMINE KW VALUE FOR PROGRAMING YOUR
AUTOMATION PANEL.
KW MAXIMUM
=
E x
I
x 1.73
1000
KW DEMAND = E x
I
X 1.73 x (mA out -
4)
1000 x 16
Where:
E =
Line-to-line voltage
I
=
Maximum rated full scale of one CT in amps
mA out =
4-20 mA reading (note: you must provide DC volts)
11. OPTIONAL QUICK CHECK OF OUTPUTS
1. Calculate average of the three line currents (I ave.) with
a portable clamp on ammeter.
2. Calculate the approximate KW:
= E x
I
(ave.) x 1.73 x power factor (use 0.9 if unkown)
1000
3. Compare the calculated value with the actual 4-20 mA
reading (Use KW MAXIMUM formula above)
4. Calculate the approximate seconds per pulse
(see TABLE 2 on page 7 for CTs up to 1000A):
=
KW DEMAND x Pulses per second maximum
KW MAXIMUM
Pulses per second maximum is read from selection switch.
5. Compare approx. seconds per pulse with the number of
seconds between KW pulses as indicated by PULSE LED on unit.
NOTE: The 6001 is very accurate. Since these calculations
are approximate, there may be some variation. Also,
calculations will vary if there are load changes during
readings.
INSTALLATION CONTINUED
TEST MODE
The TEST setting on the MAX PULSE/SEC. switch is used to
verify operation of the power multiplication portion of
the circuit, and also facilitates trouble shooting. When in
the test mode, the pulse LED should blink steadily to
indicate proper circuitry operation. Since it accelerates the
pulse output to 9.2 pulses/sec. at max load, you will be able
to determine the unit is operating even when no load is
present (voltage must be present--the unit is monitoring
its own current draw).
TROUBLESHOOTING
Problem:
Phase loss LED out.
Solution:
A.
On initial installation, check L-1, L-2, L-3 to ensure
phases are not reversed, and that all are connected.
B.
Check that voltages on phases are above undervoltage
set-point.
Problem:
Pulse LED does not blink
Solution:
A.
Ensure monitored load is ON. Ensure fuse or breakers
to unit are not blown.
B.
Verify that CTs are all oriented towards load as
indicated on label.
C.
Verify all CT wiring is correct (polarity of black/white
must be observed.)
Problem:
Unit output is only a fraction of actual power
consumption
Solution:
A.
Verify that CTs are all oriented towards load as indicated
on label.
B.
Verify all CT wiring is correct (polarity of black/white
must be observed.)
C.
Check that the current and voltage inputs have proper
relationship (if voltage legs are reversed, Phase Loss
LED will be out).
Problem:
Unit output is only a fraction of actual power
consumption
Solution:
A.
Verify that CTs are all oriented towards load as indicated
on label.
B.
Verify all CT wiring is correct (polarity of black/white
must be observed.)
C.
Check that the current and voltage inputs have proper
relationship (if voltage legs are reversed, Phase Loss
LED will be out).
Problem:
The phases are not clearly marked, or difficult to
identify:
Solution:
A.
Make sure that there is power supplied to the load.
B.
Put the pulse selector switch in the test mode.
C.
Put jumpers on the phase B and C CT inputs of the
transducer, and connect one of the CTs to the phase A
input. The kWH pulse light will either be flashing or it
will be off.
D.
If the light is flashing, reverse the wires and see if the
light goes out. If the light goes out the CT is on the
proper phase.
E.
If the light is off when the connection is made, reverse
the wires and see if the light starts flashing. If it does ,the
CT is on the correct phase.
F.
Repeat steps 3-5 for each phase (e.g. put jumpers on
phase A & C and connect a CT to phase B), and mark each
CT for the correct phase.
