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Overview
The Model 737 DC Power
Supply with Battery Back-Up provides a filtered and regulated source of
27 Vdc with a maximum output current of 5 A. The nominal input voltage
is 110-240 V, 60 Hz. Rechargeable batteries contained within the Model
737 provide output back-up capability in the event of an AC input
voltage interruption. Under battery operation, the Model 737 will
continue to supply a 5 A DC output for up to nominally two hours. For
output loads of less than 5 A the battery operating time will
substantially increase. The unit is completely self-contained in a
compact enclosure. Mounting kits, available separately, allow the unit
to be wall or rack mounted. The Model 737 is Underwriters Laboratories,
Inc. LISTED under their CUL (Canada-United States) UL-60950 ITE
category.
Model 737 Specifications
Input Voltage:
110-240 volts, 47-63 hertz
Input Current: 3.0 amperes, maximum
Input Power Cord:
Type: 3-conductor with North American-standard NEMA 5-15P plug. Plug can
be replaced as required. Conductors have CEE color code.
Length: 6 feet (2 meters), nominal, not detachable
Output Voltage:
27 volts DC, nominal, with AC input voltage present
24 volts DC, nominal, battery operation; no AC input voltage present
Output Current: 5.0 amperes continuous, maximum
Recommended Minimum Output Load Current: 100 milliamperes (helps
maintain correct charge voltage)
Output Ripple Voltage: less than 100 millivolts p-p;
“talk-battery” quality
Output Protection:
Type: solid-state, automatic reset
Current Required for Automatic Output Shutoff: 5.2 A, nominal
Batteries: 2
Type: 12 V, 7.2 Ah, sealed lead-acid (Panasonic LC-R127R2P)
Transportation: classed as “Non-Spillable”
Battery Operating Time (Nominal):
1 hour, 5.0 A output load
2 hours, 2.5 A output load
7 hours, 1.0 A output load
14 hours, 0.5 A output load
Battery Charge Time (Nominal):
36 hours, 5.0 A output load
12 hours, 2.5 A output load
2.5 hours, no output load
Figures reflect charging process beginning with batteries in fully
discharged state (worst-case situation)
Automatic Battery Disconnect:
Type: solid-state
Operating Threshold: 21 V, nominal
Input-to-Output Efficiency: 86%, nominal, measured with 5.0 A
output load
Output Connector—3-Position:
Functions Supported: ground, DC output
Type: Phoenix Contact (or equivalent) pluggable terminal strip, 0.2-inch
(5.08 mm) contact centers
Mating Plug (included with Model 737): Phoenix part number
IC2,5/3-ST-5,08 (Phoenix order number 1786187) or equivalent
Output Connector—6-Position:
Functions Supported: ground, DC output, status contact
Type: Molex® Mini-Fit, Jr.™ 6-position dual row header
Mating Connector: Molex Mini-Fit, Jr. 6-position dual row receptacle,
suggested Molex part number 39-01-2060; suggested crimp-on female
terminals Molex part number 39-00-0039
Interconnecting Cables:
One or two interconnecting cables required for every installation;
purchased separately, not included with Model 737. Various lengths and
configurations available from Gordon Kapes, Inc.
LED
Status Indicators: 2
Functions: AC input present, DC output present
Status Contact:
Action: normally open (not shorted)
Type: sealed bifurcated relay contact, isolated
Rating: 0.5 A maximum at 60 Vac or 60 Vdc (resistive)
Function: closes (shorts) upon loss of AC input power, defined as
nominally less than 85 Vac
Safety Compliance: Underwriters Laboratories, Inc. CUL-60950 ITE
LISTED
Radiated Noise Compliance: complies with FCC Part
15, subpart J, class A for radiated and conducted emission
Operating Environment:
68 degrees F (20 degrees C), nominal. Intended for operation in
commercial environment where air conditioning is present. Operation at
temperatures greater than recommended will significantly reduce battery
life.
Dimensions (Overall):
2.9 inches high (7.4 cm)
17.0 inches wide (43.2 cm)
9.1 inches deep (23.1 cm)
Figures reflect no mounting brackets attached
Mounting: wall, 19-inch rack, or 23-inch rack mounting kits
available, purchased separately. Rack mounting requires two standard
rack spaces (3.5 vertical inches). A mounting kit is required for every
installation; not included with Model 737.
Weight:
32.7 pounds (14.9 kg)
35.2 pounds (16.0 kg), shipping weight
Figures reflect no mounting brackets attached
Specifications
subject to change without notice.
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