Page 1
02-29-08
Section 75
Battery Chargers – Sentry and Guardian Models
Features
• High-quality constructed stainless steel cases,
suitable for wall mounting
• Auto boost operation provides increased
output voltage when batteries are below a
preset point
• Remote temperature compensation provides
control of output voltage based on temperature
• Current limiting will only output the rated
current of the charger
The Sentry and Guardian battery chargers provide automatic, current limited and voltage controlled
charging to vented lead acid batteries. They may be used in a wise range of industrial charging
applications, including standby engines, pumps and generators.
0710182
Each unit consists of a transformer, rectifier and thyristor control circuit. The control circuit ensures that
the charger maintains a battery voltage at the pre-calibrated float level, while supplying any additional
load current up to the specified maximum.
Sentry Model
•
CE and UL approvals
•
Float Charging 5A at 12v
•
Auto boost operation
•
Electronic self-resetting output fuse protection
•
Temperature compensation
•
Charge fail relay output
•
Stainless steel enclosure
Guardian Model
•
CE and UL approvals
•
Heavy duty float charging: 10A at 12/24 VDC,
20A at 24 VDC
•
Short circuit and reverse polarity protection
•
Lead acid calibrations
•
Auto boost operation
•
Charge fail relay output
•
Under volts and over volts alarms
•
Temperature compensation
•
NFPA 110 alarms
Model W D H Weight
BCES-12-5 11.1”
In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time.
MURPHY and the Murphy logo, are registered and/or common law trademarks of Murphy Industries, Inc. This document, including textual matter and
illustrations, is copyright protected by Murphy Industries, Inc., with all rights reserved. (c) 2007 Murphy Industries, Inc.
(281mm)
4.6”
(115mm)
5.5”
(140mm)
11.9 lbs
5.6Kg
Model W D H Weight
BCEG-12-10
BCEG-24-10
BCEG-24-20 13.9”
10.83”
(275mm)
(335mm)
4.92”
(125mm)
5.71”
(145mm)
11”
(280mm)
12.20”
(310mm)
10.0Kg
38.5 lbs
17.5Kg
22 lbs
Page 2
Specifications
Sentry Model
Power Supply
Nominal operating voltages: 120V units
Permissible voltage variation: ± 6% of nominal
Nominal operation frequency: 50-60Hz
DC Charge Output
Maximum current ADC: 5
Nominal voltage VDC: 12
Float/Boost Voltages
Battery Type Float Volts (VDC) Boost Volts (VDC)
12V Lead Acid (6 cells) 13.6 14.1
Charge Fail Output
Relay type: volt free SPDT contacts; relay de-energized on fault
Contact rating: 1A at 30V, DC (resistive load)
General
Operating temperature: +14 to +131°F (-10 to +55°C)
EMC emission/immunity: EN 58801-2 / EN50082-2
Model Info
BCES-12-5 12 volt, 5A, lead acid cells
Guardian Model
Power Supply
Nominal operating voltages: 120VAC ± 6%
Permissible voltage variation: 120VAC ± 6%
Nominal operation frequency: 50-60Hz
DC Charge Output
Maximum current ADC: 20/20
Nominal voltage VDC: 24/12
Float/Boost Voltages
Battery Type Float Volts (VDC) Boost Volts (VDC)
12V Lead Acid (6 cells) 13.6 14.1
24V Lead Acid (12 cells) 27.2 28.2
Charge Fail Output
Relay type: volt free SPDT contacts; relay de-energized on fault
Contact rating: 1A at 30V, DC (resistive load)
Normal Output VDC
12 24
Under Volts Alarm 12.5 25
Over Volts Alarm 15.5 31
Delay on under volts 120 seconds
General
Operating temperature: +14 to +131°F (-10 to +55°C)
EMC emission/immunity: EN 58801-2 / EN50082-2
Mounting hole dimensions:
Width (between holes): 6.8” (173mm)
Height (between holes): 10” (255mm)
Mounting holes ∅=0.2” (6mm)
Model Info
BCEG-12-10 12 volt, 10A, lead acid cells
BCEG-24-10 24 volt, 10A, lead acid cells
BCEG-24-20 24 volt, 20A, lead acid cells
Warranty
may be viewed or printed by going to www.fwmurphy.com/support/warranty.htm
- A limited warranty on materials and workmanship is given with this FW Murphy product. A copy of the warranty
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