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The value of the load resistor may be
calculated using Ohm's Law:
R = E/I
Where E is the desired
voltage and I is 0.001 (1 mADC).
B
Option C & D, 0 to 10 VDC constant
voltage output, supply up to 5 mA
into a 2000 Ω load.
C
Option E, 4 to 20 mADC output for
industrial controls, has its own power
source and may be used for loads
from 0 to 1500 Ω.
D
Option E2, 4 to 20 mADC
output requires 16 to 40 volts
DC in the external loop.
MODEL
PC5-001B
PC5-004B
PC5-004B
PC5-7.5B
PC5-007B
* Direct Connections for 120 V line to
neutral. Refer to drawings A902-082 and
A902-076, PG. 23 & PG. 23 for PT's & CT's
connections.
PHASE
ELEMENTS
10 / 2W
1
10 / 3W
2
30 / 3W
2
30 / 4W
2½
30 / 4W
3
7.
READOUT INSTRUMENT
Analog instruments, which accept a 0 to
1mADC input, may be directly connected to
the output terminals of the watt transducer
with option A or B, to provide a direct
reading in power. Watt Transducers may be
used to supply signals for recorders, analog
to digital converters, computers, digital
panel meters, etc.
8.
SCALING
8.1
OSI has a complete line of watt transducers
for
various
applications.
designed for a particular voltage and current
range, and are calibrated as a package. If a
watt transducer is to be used with user
supplied current and potential transformers;
the following information will be helpful.
REQUIRED
PT's
CT's
1
1
* DIRECT
2
2
2
2
3
3
3
The power measured in a circuit in which
current and potential transformers are used
is equal to the power rating of the watt
transducer multiplied by both the current
transformer and potential transformer ratios.
If only current transformers are used, then
multiply by the current transformer ratio.
These
are
CALIBRATED
WATTS AT 1mADC
500
1000
1000
1500
1500
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