Precision Control Systems PanelIR 4555 - Manual (Page 28)

Model 4555 PanelIR TM User Manual Appendix A
Figure A-1 Voltage and
Temperature
Single Phase Loads
The line current for single-phase loads can be calculated using one of the following
methods:
1. Determine the current per lamp. If the applied voltage to the lamps is different,
calculated the lamp current as explained on page 21.
2. Determine the number of lamps.
3. Calculate the line current:
Line Current = Lamp Current X Number of Lamps.
Example: Assume quantity 2 Model 4555-25-12 using 2500 T3 lamps connected to a
480 volt source (see Figure A-2).
1. The current per 2500T3 lamp connected to a 480 volt source is 5.2 amperes.
2. The number of lamps in each Model 4555-25-12 is 12. Quantity 2 Pyropanels X
12 Lamps = 24 lamps total (see Figure A-2).
3. Line Current = 5.2 Amperes X 24 Lamps = 125 Amperes.
Research, Inc.
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