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800-706-7009

Battery chargers, rectifiers, dc power, Battery chargers, rectifiers, dc power, Battery chargers, rectifiers, dc power, Battery chargers, rectifiers, dc power F3 Telecom Filtered Battery Charger/Rectifier Reliable Three-Phase Input. Filtered DC output - exceeds international telecommunications standards.   Temperature compensated - eliminates the No. 1 cause of premature battery failure.   Compact housing sizes - saves space and offers modern appearance.   Comprehensive alarm system - provides complete status on charger and battery.   SENS quality - means years of trouble-free service.       F3 Battery Charger/Rectifier Product Highlights SENS F3 provides high-power, reliable DC to telecommunications, process control and a wide range of other applications that require a well-filtered source. Filtered output and temperature-compensated control circuitry extend battery life, eliminate over- and undercharging, and reduce risk of thermal runaway. The F3 is a high-power version of the reliable chargers that SENS has shipped to more than 40 nations, since 1971. Standard features include AC line compensation, precision voltage regulation, current limiting, input circuit breaker, voltmeter and ammeter, and parallel load sharing. F3 Battery Charger/Rectifier Specifications AC Input Frequency: 60 Hz standard, 50 Hz optional. +5% frequency range. Voltage: 208 or 480 standard (see Ordering Information Table). 220, 240 or 380 optional. Other voltages available. +10% voltage range. Output Voltage Regulation Better than 1% of the correct temperature compensated value from no load to full load when input is within specified tolerances. Voltage sensing at battery is optional. Output Voltage 24, 48, 120 volts nominal. Other voltages optional. Float and equalize voltages adjustable. Current Limiting Factory set to 100% of rated output; adjustable. Output Ripple & Noise   24, 48 VDC: 30 mV rms maximum ripple and 32 dBrnC voice-band noise when connected to a battery having capacity in AH four times the ampere output rating of the charger. 100 mV rms maximum with battery disconnected. 120 VDC:: 150 mV rms maximum ripple when connected to a battery having capacity in AH four times the ampere output rating of the charger. Protection   Soft start.   Electronic current limiting.   AC circuit breaker. DC circuit breaker.

Temperature Compensation
(See Figure 1).
 

All batteries have a negative temperature coefficient. The F3 is equipped with the appropriate temperature compensation (-0.2% per deg. C) to assure correct charging in all conditions. Provision for remote battery temperature sensing is included. The remote sensor is optional.

Meters
DC voltmeter: 3.5" (89 mm) scale, 2% accuracy.
DC ammeter: 3.5" (89 mm) scale, 2% accuracy.

Alarms
LED indicators and Form C contacts optional (see Model Number Breakout). An alarm condition will de-energize the appropriate Form C contact. Delay circuitry in the low and high battery alarm systems prevents spurious indications.

Parallel Operation
Chargers can be operated in parallel for redundancy or to achieve higher total output current. A paralleling circuit forcing load sharing to within +10% from low load to full load is standard. It is activated by connecting a control wire between chargers.

Controls & Adjustments
 

• Charging mode switch (Float/Equalize).
   
• Separate internal adjustments for float and boost voltages.
   
• Separate internal adjustments for low and high DC alarms.
   
• Current limit adjustment.

   

Ambient

Operating temperature:		-20 C to +50 C.
Cooling:		< 200A to convection cooled.
Storage temperature:		-40 C to +85 C.
Humidity:		5% to 95% non-condensing.

Alarm Systems Table

The Alarm System Code is used as part of the model number when the unit is ordered. See the model
number breakout above.

How to Order

1. Determine the charger model number. Refer to the Ordering Information Table.
    
2. Specify output voltage, alarm configuration, fuses/breakers, and float/boost control by filling in the part number suffix. Refer to the Model Number Breakout.
3. If options are required, specify them as line items.
    

Battery Charger/Rectifier Ordering Information Table

Note: Refer to the Model Number Breakout diagram for how to specify
alarms, input voltage and options. The standard configuration is shown
in the price list.

Battery Charger/Rectifier Optional Features
 

• Remote temperature sensor.
• Equalize timer: 0-24 hr or 0-72 hr. (60 Hz only).
• Fungus proofing of circuit boards.
• Export packaging.
• Drip shield.

Housing Dimensions Table

Mechanical   Housing size DC-3A Clear-anodized aluminum; field selectable mounting on wall or in 23" relay rack.

Battery Charger/Rectifier Design Guidelines
Charger shall be designed for heavy-duty industrial service and capable of full-rated output indefinitely at temperatures between -20 C and +50 C. Conservatively rated silicon power semiconductors in a full-wave bridge shall be used. Charger shall be capable of recharging a fully discharged battery of the maintenance-free lead acid, conventional (wet) lead acid or nickel-cadmium type. The charger housing material shall be inherently non-rusting. Charger mounting shall be field selectable for wall or relay rack mounting.

Standards
Charger shall be designed and built in accordance with applicable NEMA standards, UL 1012, and the best commercial practice for industrial and utility grade rectifiers/chargers. Manufacturer shall maintain comprehensive quality systems and shall be ISO 9001 or ISO 9002 registered.

Input
Charger shall operate from: 50 Hz (47 to 53 Hz range) or 60 Hz (57-63 Hz range).
Nominal input voltage shall be: (208V, 220V, 240V, 380V, 415V or 480V).
Charger shall incorporate a soft-start feature in which output is gradually increased from zero to full, required output within 5 to 10 seconds. Input protection shall consist of a 3-pole circuit breaker. Proven surge suppression devices shall be fitted.

Output
General Characteristics
Output voltage shall be (24, 48 or 120) volts nominal with provision made for customer connection of either polarity to ground, or for operation with neither polarity connected to ground. Float voltage shall be adjustable from 100% to 120% of nominal. Equalize voltage shall be adjustable up to 15% above float voltage. Output voltage adjustments shall be on separate potentiometers in the charger. Charger shall incorporate automatic current limiting with a rectangular current limit characteristic, and shall be capable of operating into a short circuit or dead battery indefinitely without damage or overheating. Charger shall incorporate a 2-pole DC output circuit breaker or 2-pole output fuse.

Charger shall be filtered to minimize interference with load and control equipment. Output ripple voltage in 24 and 48 volt units shall be 30 mV rms when connected to a battery having capacity in AH four times the ampere output rating of the charger. Ripple voltage in 120 volt units shall be 150 mV rms maximum when connected to a battery having capacity in AH four times the ampere output rating of the charger.

Regulation and Temperature Compensation
Voltage regulation shall be within +1% of the correct temperature-compensated value from no load to full load with simultaneous variations in input voltage of +10% and frequency of +5%.

Charger shall incorporate automatic ambient temperature compensation to maximize battery performance and life. Temperature coefficient shall be -0.18% per degree C to assure correct charging at all temperatures. Provision shall be made for simple field retrofit of remote temperature compensation probe. Temperature compensation shall automatically revert to local sensing if the remote temperature probe is damaged or disconnected.

Float/Equalize Control
Charger shall include an automatic equalize feature that is activated when the battery's state of charge is reduced. A front panel switch shall be provided to enable manual selection of float, boost or automatic modes.

Auxiliary Circuits
The charger control system shall include a high-voltage shutdown system and means for forced load sharing to within +10% when two or more chargers of the same rating are connected in parallel.

Indicators and Alarms
Analog meters (3.5" scale, 2% accuracy) shall be provided for DC output voltage and DC output current. Status of the charger and battery shall be visible on the front panel via LEDs. Means for manual testing of correct operation of LEDs shall be provided. Indications shall include AC on, float or boost mode, AC fail, low-battery voltage, high-battery voltage, and charger fail. Charger fail alarm shall sense charger output current, and include means for inhibiting false alarms when output current demand is below the minimum current sense threshold. Positive polarity ground fault and negative polarity ground fault shall also be provided when ground fault detection is required. Ground fault detection shall be fully electronic and shall not rely on manual operation or incandescent bulbs. Detection sensitivity of the ground fault alarm system shall be less than or equal to 100 microamps of ground current.

The charger shall be Stored Energy Systems type F3 or approved equivalent.