Redundant Power Supply Packages
using Switching Regulated Power Supplies

AC-DC single output

Rack Mounting & Wall Mounting


Input Voltage: 90-132 VAC, 49-61 Hz, single phase. For models R24W7, RWL24W7, R28W7, RWL28W7, R48W7 and RWL48W7, the use of 30A lines is recommended. When operating on 50 Hz input, derate output by 5%.

A separate set of AC input terminals is provided for each power supply, so that if two sources of AC input power are available, one may be used for each supply and so reduce the possibility of output dropout due to loss of input power.

Output Voltage:
Normal mode: Nominal voltage shown in table.
Backup mode: 0.2 volts less than nominal voltage shown in table.

Output Voltage Adjustment Range: ±0.5 volt minimum.

Load Regulation: ±0.05% (Dynamic regulation - does not include 0.2 volt shift which occurs during switchover to lower-set backup supply.)

Line Regulation: ±0.05%

Ripple: 15 mV rms, 100 mV p-p. (48 volt outputs;25 mV rms, 150 mV p-p.)

Remote Voltage Sensing: Provision for sensing the output voltage across the load, so that drops in the load line are compensated, is a standard feature.

Load Protection: Overvoltage protection.

Overload/Short Circuit Protection: Foldback current limiting with automatic recovery.

Polarity: Output is floating; either positive or negative output terminal may be grounded or floated up to 300 volts above ground.

Voltage Monitor Circuits: One for each power supply. Relay contacts switch when output voltage decreases approximately 2 volts from the nominal rating (approximately 3 volts for outputs over 48 volts), and may be used to control an external failure alarm.

Alarm Relay Contact Ratings: 120 VAC, 8A / 60 Vdc, 1A. (To comply with SELV requirements, limit switched voltage to 60 Vdc / 42 VAC.)

Output Metering: Two voltmeters (standard). Ammeters available; see Options.

Temperature Coefficient: 0.02%/°C (Typical)

Ambient Operating Temperature: 0 to +71°C.

Storage Temperature: -40 to +85°C.

Terminal Strip Cover: Clips on.

Size and Weight:

Case  |    Mounting    |      Rough Dimensions     | Approx. 
Size  |      Type      |          (inches)         | weight 
5RW16    Rack Mounting  5.3 x 19" panel, 16.8" Deep    21 lb.
5RW18    Rack Mounting  5.3 x 19" panel, 18.8" Deep    27 lb.
5RW22    Rack Mounting  5.3 x 19" panel, 22.8" Deep    32 lb.
519RW15  Wall Mounting  15.5 H x 19 W x 6.1" Deep      24 lb.
519RW18  Wall Mounting  18.5 H x 19 W x 6.1" Deep      27 lb.
522RW17  Wall Mounting  17.3 H x 22.5 W x 6.1" Deep    33 lb.

See Drawing for exact dimensions