The A3P is a proportional, infinitely variable power controller capable of delivering 0-97% of the applied line voltage to directly connected electric heaters. It will not control transformers or motors. This is accomplished by phase angle firing three SCR's (one per phase). Modular construction allows for simple and solderless field serviceability. There are four field replaceable items:
- Printed circuit board
- Fuses
- SCR/ diode packages
- MOV's (Metal Oxide Varistors)
Unit of Measure
Specifications
Voltage Designations |
N/A 208 to 240 VAC 50/60 Hz |
Load |
N/A 600 AMPS |
Output Voltage |
N/A 0 to 97% of input voltage |
Control Signal |
N/A 4 to 20 mA at 6 volts DC |
Input Impedance |
N/A 300 ohms |
Linearity |
N/A < 5% deviation |
Tracking (phase to phase) |
N/A < 5% deviation (balanced loads) |
Response Time |
N/A <12 mS (std unit, non soft start) |
Cooling |
N/A
Convection: 30-80 amps Fan (120 VAC): 100-500 amps |
Thermostat |
N/A 190 oF (fan cooled units only) |
Power Dissipation (Watts) |
N/A 1.2 x maximum current |
Compact |
N/A No |
