AC/DC SUPPLY/CHARGER

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This assembly is a combination power supply and battery charger that inputs 120VAC power, and supplies an uninterrupted source of both 24VDC and 12VDC power for instrumentation and communication devices.

Aside from supplying an uninterruptible 12VDC and 24VDC power source, the assembly features a "low battery alarm" indication signal (for local and/or remote monitoring) and a load shed function that protects the attached standby battery from deep discharge.

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APPLICATIONS

• Powering control and communication equipment
• PLC, IOC, RTU, SLC uninterruptible power
• Field instrument power

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FEATURES

• Combination charger and supply circuits
• Load shed circuit to protect batttery from deep discharge, and lengthen it's useful life
• Compact size for installation efficiencies
• Rapid recharging capability for minimal downtime
• Industrial quality components and workmanship for long and reliable operation

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SPECIFICATIONS

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Operating environment (electronics)

• Standard -10 to +70°C temperature
• 0 to 95% relative humidity (non-condensing)

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Input power

• Input power: 120VAC ±10%, 50-60Hz

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Output power

• Instrument power: 27.6VDC ±3%, 3A (battery backed-up)
• Aux power: 12.0VDC ±3%, 1A (battery backed-up)
• Maximum combined output current is 4A, leaving a 1A reserve for battery charging current
• Current limiting begins when combined load reaches 150VA
• Derate output capacities by 25% when operating temperature exceeds 60°C

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Transient protection

• Meets or exceeds IEEE C37.90A-1987
  surge withstanding specification

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Auxiliary operations

• Low battery alarm: 22V ±3%
• Low battery alarm signal: Open collector to Power Common (sinks 10mA from 28VDC source)
• Low voltage cutout (battery load shed) occurs at 21V ±3%
• Restoral from low voltage cutout occurs when battery voltage reaches 24V ±3%

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Standby batteries

• Charger designed for 24AH batteries
• Selected batteries must be of a lead-acid type, or equivalent, designed for "float" charging
• Batteries must support a charging current of 5A; otherwise, battery failure may result
• Suitable standby batteries include Panasonic LCR12V24P and Power Sonic PS12240 models

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ADDITIONAL INFORMATION

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ORDERING INFORMATION

200119: AC/DC CHARGER/SUPPLY ASSEMBLY

200119-000 $422

POWER TRANSFORMER, 2:1. Required when input power is 230-240VAC instead of standard 120VAC. Primary also has 1:1 winding to provide "isolated" 120VAC power.
037011-000 $112

See standby batteries.

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