ferroresonant single phase charger

Product Information

Controlled 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.

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-gold-seal
FIVE YEAR WARRANTY
Features and 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

GENERAL 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

STANDARD 24VDC OUTPUT MODELS
ModelInput VoltageInput CurrentOutput CurrentDimension
H x W x D
inches (mm)
DC Circuit BreakerWeight
ARE-M2406A 120VAC
208VAC
240VAC
2.0A
1.1A
1.0A
6A 12.25 x 17 x 15
(318 x 432 x 381)
10A 65lb | 30kg
ARE-M2412A 120VAC
208VAC
240VAC
4.0A
2.3A
2.0A
12A 12.25 x 17 x 15
(318 x 432 x 381)
20A 72lb | 33kg
ARE-M2425A 120VAC
208VAC
240VAC
8.3A
4.7A
4.1A
25A 12.25 x 17 x 15
(318 x 432 x 381)
35A 102lb | 46kg
ARE-M2450A 120VAC
208VAC
240VAC
16.0A
9.0A
8.0A
50A 24.5 x 17 ix 15
(622 x 432 x 381)
70A 162lb | 74kg
ARE-M2450A 480VAC 4.0A 50A 24.5 x 17 ix 15
(622 x 432 x 381)
70A 162lb | 74kg
ARE-M24100A 120VAC
208VAC
240VAC
33.0A
19.0A
16.0A
100A 24.5 x 17 ix 15
(622 x 432 x 381)
125A 216lb | 98kg
ARE-M24100A 480VAC 8.0A 100A 24.5 x 17 ix 15
(622 x 432 x 381)
125A 216lb | 98kg

STANDARD 48VDC OUTPUT MODELS
Model Input Voltage Input Current Output Current Dimension
H x W x D
inches (mm)
DC Circuit Breaker Weight
ARE-M4806A 120VAC
208VAC
240VAC
4.0A
2.3A
2.0A
6A 12.25 x 17 x 15
(318 x 432 x 381)
10A 72lb | 33kg
ARE-M4812A 120VAC
208VAC
240VAC
7.0A
4.0A
3.5A
12A 12.25 x 17 x 15
(318 x 432 x 381)
20A 95lb | 43kg
ARE-M4816A 120VAC
208VAC
240VAC
8.5A
5.0A
4.0A
16A 12.25 x 17 x 15
(318 x 432 x 381)
20A 102lb | 46kg
ARE-M4830A 120VAC
208VAC
240VAC
18.0A
10.0A
9.0A
30A 12.25 x 17 x 15
(318 x 432 x 381)
70A 110lb | 50kg
ARE-M4850A 120VAC
208VAC
240VAC
30.0A
17.6A
15.0A
50A 24.5 x 17 ix 15
(622 x 432 x 381)
70A 192lb | 87kg
ARE-M4850A 480VAC 7.5A 50A 24.5 x 17 ix 15
(622 x 432 x 381)
70A 192lb | 87kg
ARE-M48100A 120VAC
208VAC
240VAC
70.0A
40.0A
35.0A
100A 30 x 20.5 x 19
(762 x 521 x 483)
100A 435lb | 197kg
ARE-M48100A 480VAC 18.0A 100A 30 x 20.5 x 19
(762 x 521 x 483)
100A 435lb | 197kg

STANDARD 130VDC OUTPUT MODELS
Model Input Voltage Input Current Output Current Dimension
H x W x D
inches (mm)
DC Circuit Breaker Weight
ARE-M13006A 120VAC
208VAC
240VAC
8.5A
5.0A
4.5A
6A 12.25 x 17 x 15
(318 x 432 x 381)
10A 100lb | 46kg
ARE-M13012A 120VAC
208VAC
240VAC
18.0A
10.0A
9.0A
12A 24.5 x 17 ix 15
(622 x 432 x 381)
20A 170lb | 77kg
ARE-M13012A 480VAC 5.0A 12A 24.5 x 17 ix 15
(622 x 432 x 381)
20A 170lb | 77kg
ARE-M13016A 120VAC
208VAC
240VAC
22.0A
13.0A
11.0A
16A 24.5 x 17 ix 15
(622 x 432 x 381)
20A 185lb | 84kg
ARE-M13016A 480VAC 6.0A 16A 24.5 x 17 ix 15
(622 x 432 x 381)
20A 185lb | 84kg
ARE-M13025A 120VAC
208VAC
240VAC
38.0A
21.0A
19.0A
25A 30 x 20.5 x 19
(762 x 521 x 483)
40A325lb | 148kg
ARE-M13025A 480VAC 8.5A 25A 30 x 20.5 x 19
(762 x 521 x 483)
40A 325lb | 148kg
ARE-M13035A 120VAC
208VAC
240VAC
55.0A
31.0A
27.0A
35A 30 x 20.5 x 19
(762 x 521 x 483)
50A 460lb | 209kg
ARE-M13035A 480VAC 13.5A 35A 30 x 20.5 x 19
(762 x 521 x 483)
50A 460lb | 209kg
ARE-M13050A 120VAC
208VAC
240VAC
50.0A
44.0A
22.0A
50A 30 x 20.5 x 19
(762 x 521 x 483)
70A 600lb | 273kg