Product Overview: ETI AD-1B AC/DC Variable Power Supply
ETI AD-1B AC/DC Variable Power Supply
Variable Power Supply DESCRIPTION
The output is controlled by means of a three position illuminated rotary switch. It has a maintained and momentary position, and a center OFF. When turned ON, a relay is energized and the internal lamp is illuminated. The contacts of the relay drive AC voltage directly to one pair of yellow binding posts, and through a full wave bridge rectifier to a pair of red and black binding posts. LED indicators next to the binding posts and near the meter indicate AC or DC mode.
A 10 kOhm load resistor is connected to the DC output along with a 12 volt zener diode and an indicator LED. This provides a 5-20 watt load for the DC output, and indicates if there is an output voltage above about 20 volts as a safety precaution.
APPLICATIONS
This is a small portable AC and DC power supply intended for circuit breaker charging motors and other general purpose applications. It will provide AC and DC voltage in three nominal ranges from 0 to 120, 240, and 480 volts, at 1 kVA. It will be in a suitcase style enclosure approximately 13” x 9” x 12”, and weighs 50 lb.
SPECIFICATIONS
Input:
105-130 VAC, 50/60 Hz, 1.2 kVA nominal (10 amperes)
Outputs:
0-140 VAC at 7.2 A continuous (1.0 kVA)
0-280 VAC at 3.6 A continuous
0-560 VAC at 1.8 A continuous
0-480 VDC at 1.8 A continuous (0.86 kVA)
0-240 VDC at 3.6 A continuous
0-120 VDC at 7.2 A continuous (Unfiltered
Regulation:
11% on AC outputs at 1.0 kVA
11% on DC outputs at 0.86 kVA
Ripple (DC):
N/A (unfiltered)
Overloads:
200% 30 seconds ON, 90 seconds OFF
300% 10 seconds ON, 90 seconds OFF
Voltmeter Accuracy:
AC: +/- 0.5% of reading +/- 0.5% FS
DC: +/- 2% of reading +/- 1% FS (at rated output current)
Dimensions:
Width: 13.5 inches (343 mm)
Length: 10.0 inches (254 mm)
Height: 11.5 inches (292 mm)
Weight: 50 pounds (22.7 kg)
Included Accessories:
- Input power cord 1
- Contacts leads 1 pair
- Technical manual 1 copy
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