The Micro ARE Series of float rectifiers combines the advantages of voltage regulation, short circuit protection, low operating costs (a combination of high efficiency and low power factor), easy maintenance and high reliability with advanced rectifier, control and filter circuitry, and user-friendly operator interface.

Designed specifically for utility and communication applications, the Micro ARE Series rectifiers are easily adjusted to meet your specific operating requirements and will provide years of low maintenance service.
 

• High-output voltage shutdown
• Redundant high-output voltage shutdown
• Digital display, 2 line by 20characters, shows voltage and current in normal operation at 1% accuracy
• Float and equalize settings are adjusted via keypad
• AC power failure alarm relay with one set of form C contacts
• Rectifier failure alarm with one set of form C contacts
• High Voltage Shutdown failure alarm with one set of form C contacts
• Red and Green LEDs display status of charger
• No-charge alarm with load sharing circuit
• 0 to 255 hour equalize timer
• Ground fault detection alarm
• High DC voltage alarm
• Low DC voltage alarm
• Alarms have adjustable time delay, 1-300 second

• Door opens approximately 90 degrees for easy access to interior
• The control board is mounted on the rear of the door for easy access
• The interface board is mounted behind the door for easy access
• Serviceable components are accessible and removable from the front
• Input and output connections are easily accessible
• Knockouts for cables are provided
• Cabinets can be relay rack, wall or floor mounted
• Cabinet has durable baked epoxy powder finish

• Blocking diode
• Lightning protection device
• Ground alarm detection cutoff switch
• Alarm board with individual form C contacts for the summary, GND +, GND -, LVA, HVA, and NCA relays
• Individual Alarm LEDs for quick visual reference
• Remote temperature probe
• DC output protection (MOVs)
• High capacity AC breaker
• High interrupting Current DC breaker
• Export packaging
• Drip top

24V-Output


48V-Output


130V-Output


Typical Cabinet Dimensions

• 17 in (432 mm) wide cabinets can be used in 19 in (483 mm), 23 in (584 mm) or 30 in (762 mm) relay racks
• 20.5 in (521 mm) wide cabinets can be used in 23 in (584 mm) or 30 in (762 mm) racks only
• Rack angles mount at rear for wall mounting
• Floor brackets are available for all models instead of relay rack mounting angles when ordered with charger

Input Voltages
Transformers are dual wound for either 120, 208, 240 volts (+10%, -12%) or for 480 volts, single phase, 60 Hz (+/- 3hz). ARE-M13050 is wound for 208, 240, and 480 volts).

Regulation
DC voltage is maintained within +/-0.5% at any load from no load to full load with+10%,-12% variation (or ANSI standard ranges) in the AC input voltage while floating rated number of cells. Control is accomplished with a single microprocessor-control board and can operate with or without a battery.

During operation, the maximum output voltage transient does not exceed 6% of the initial steady-state voltage for sudden load changes between 10% and 90% of rated output. Recovery takes less than 300 milliseconds. Operation without a battery is stable under all conditions of line and load (within stated limits).

Turn-on under all conditions of line and load has a “soft-start” characteristic with overshoot.

Electrical Noise
For 24 and 48-volt models, the filtering provided produces a ripple level of less than30 millivolts RMS with electrical noise less than 22 dBrnc measured on a battery with an eight-hour capacity rating of four times the rectifier current rating.

For 130-volt models, the filtering provided produces a ripple level of less than 100 millivolts rms when connected to a battery with an eight-hour capacity rating of four times the rectifier current rating.

The total dynamic response of the control circuitry permits all Micro ARE rectifiers to operate as power supplies.

Current Limiting Circuit
The current limiting circuit is factory set at110% of rated DC output but can be adjusted down to 80% and up to 110%.

Float and Equalize Voltages
Both the float and equalize voltages are user adjustable to accommodate different battery types. Float voltages are adjustable from 2.00 -2.32 Volts per Cell and the Equalize voltage is adjustable to a maximum of 2.45 Volts per Cell.

(24V models: 24-28VDC; 48Vmodels: 48-59VDC; 130V models: 120-147VDC)



Temperature Compensation
The user-adjustable temperature compensation circuit will correct float and equalize voltages up to 2.0 mV per cell per °C [added for temperatures below 77°F (25°C) and subtracted for temperatures above 77°F (25°C)]

Ambient Operating Temperatures
All Micro ARE rectifiers will operate at 110% of rated DC output, continuously in temperatures from 32°F to 122°F (0°C to 50°C) up to an altitude of 3,000 ft (1,000 m). De-rating of3.6°F (2°C) for every 990 ft (300 m) over3,300 ft (1,000 m) above sea level. These units can be safely stored for up to 1 year at temperatures ranging from -40°F to 185°F (-40°C to 85°C).

Battery Eliminator Operation
All Micro ARE rectifiers will operate as a power supply without a battery at the following ripple levels:• 24 and 48-volt models less than 30 mV rms• 130-volt models less than 100 mV rms

Circuit Protection

• A shunt-trip AC circuit breaker is provided for input protection
• DC output circuit breaker
• An AC power failure alarm relay provides one set of Form C contacts that operate in case of an AC failure