UNIPOWER ARE-M Series Ferroresonant Single Phase Chargers

Unipower ARE-M Series Ferroresonant Single Phase Chargers have many inherent advantages…voltage regulation, short circuit protection, low operating costs (a combination of high efficiency and low power factor), easy maintenance and high reliability. Alpine Power Systems is an approved distributor of Unipower ARE-M Series Chargers.

The Micro ARE-M Series of ferroresonant single phase chargers combines these inherent advantages with advanced rectifier, control and filter circuitry, and user-friendly operator interface. Designed specifically for utility and communication applications, the Micro ARE-M Series ferroresonant single phase chargers are easily adjusted to meet your specific operating requirements and will provide years of low maintenance service. Unipower ARE-M Series have a 5 Year Warranty.

Unipower ARE-M Series Features & Options:

• 24, 48 and 130V Models

• 6 to 100 Amperes Output

• High Efficiency and Power Factor

• Single-Phase, Controlled Ferroresonant

• Digital Controls

• Low Electrical Noise

• Inherently Safe Design

• Low Maintenance

• Temperature Compensation

Unipower ARE-M Series Specifications:

Input
Transformers are dual wound for either 120, 208, 240 volts (+10%, -12%) or for 480 volts, single phase, (60Hz ±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 without overshoot.

Electrical Noise
For 24V and 48V models, the filtering provided produces a ripple level of less than 30mVrms with electrical noise less than 22dBrnc measured on a battery with an eight-hour capacity rating of four times the rectifier current rating.
For 130V models, the filtering provided produces a ripple level of less than 100mVrms 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-S rectifiers to operate as power supplies.

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

Float & 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. (24-volt models: 24-28VDC; 48-volt models: 48- 59VDC; 130-volt 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
Micro ARE-M Series 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 of 3.6°F (2°C) for every 990 ft (300 m) over
3,300 ft (1,000 m) above sea level. These units can be safely stored for up to one year at temperatures ranging from -40°F to 185°F (-40°C to 85°C).

Battery Eliminator Operation
Micro ARE-M rectifiers will operate as a power supply without a battery at the following ripple levels:

• 24V and 48V models less than 30mVrms

• 130V models less than 100mVrms

Mechanical Features
• Door opens approximately 90° 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
• Holes with plastic covers are furnished for cables entry
• Cabinets can be relay rack, wall or floor mounted
• Cabinet has durable baked epoxy powder finish

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

Standard Equipment

• High DC voltage shutdown

• Redundant high-output voltage shutdown

• Digital display, 2 line by 20 characters, shows voltage and current in normal operation at one percent accuracy

• Float and equalize settings are adjusted via keypad

• AC power failure alarm relay with one set of form C contacts

• Rectifier failure alarm relay with one set of form C contacts

• High Voltage Shutdown failure alarm with one set of form C contacts

• Red Alarm LED and Green AC On LED display status of charger

• Individual Alarm LEDs for quick visual reference

• No-charge alarm

• Load sharing circuit

• 0 to 255 hour equalize timer

• AC fail alarm

• Manual Ground Fault Voltage Meter

• Ground fault detection alarm (positive & negative)

• High DC voltage alarm

• Low DC voltage alarm

• Alarms have adjustable time delay, 1-300 seconds

Optional Equipment

• Blocking diode

• Lightning protection device

• Ground alarm detection cutoff switch

• Remote temperature probe

• DC output protection (MOVs)

• High interrupting Current DC breaker

• High interrupting Current AC breaker

• High battery temperature alarm (requires temperature probe)

• DNP3 Communications via Ethernet

• Floor stands: 24” and 36” heights

• Export packaging

• Drip top

• SIS wiring

• Alarm board with individual form C contacts for the summary, GND +, GND -, LVA, HVA, and NCA relays

Alpine Power Systems is a value-added reseller of UNIPOWER products. Alpine can provide DC Power System services on all UNIPOWER products including engineering, installation, preventative maintenance, monitoring and recycling. Alpine provides services for data centers, telecom, healthcare, oil & gas and many other applications. Call or email us today for quotation requests and technical inquiries.