Precision Control Systems 5620 - Manual (Page 5)

Page 5 of 14
1B
Introduction
5B
General Description
The Model 5620 Power Controller is an economical power controller for manually setting the
voltage into resistive load (Fig. 1-1). It has provision for different idle and run power settings,
and a timer to time the application of run power setting. This makes it ideal for laboratory or
production applications requiring these capabilities. The 5620 Power Controller is available
with current ratings of 20, 35 and 55 amperes for use on 120, 208, 240, 277, 380 and 480 volt
power sources.
The phase-angle method of power control is used to provide a smooth application of power to
the load from 10 to 100 percent of the line voltage. This makes the Model 5620 Power
Controller ideal for tungsten filament lamps and other resistive loads. An output conditioning
circuit provides a “slow start” for tungsten filament loads to prevent excessive in-rush current
on start-up due to the low resistance of the tungsten when at room temperature.
6B
Standard Features
Line Voltages: 120, 208, 240, 277, 380, 480
Current: 20, 35, and 55 amperes
Line Frequency: 47 to 63 Hertz
Line Regulation: ± 3% RMS load voltage with + 10% to -15% RMS
line variations
Internal Feedback: Average voltage
Idle Adjustment
Range: 0% to 30%, minimum
Run Adjustment
Range: 0% to 100%
Run Timer Range: 0 to 20 seconds
Output Conditioning: Fast: 30-60 msec., Ramp: 1 sec., Lamp: 5 sec.
Weight:
5 pounds (2.3 kilograms)
Figure 1-1
Section 1