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FEATURES Models with universal input of  90 to 264 vac, 50/60 Hz and also 120 vac input models. Inherent input power factor correction. Enclosed case with an internal fan and with the air intake on one end and exhaust on other end. IEC320 input plug for input power. Standard models for "48 to72 volt", 36 to 48 volt", and "24 to 36 volt" battery systems. Charge currents, into a battery system of "48 to 72 volts", of 28.4A with 230 to 240 vac input; and 14.2A with 120 vac input. Thermally protected with thermal sensors on selected heat-producing components. Uses unfiltered input power; input power is current limited; and output power is voltage limited and current limited. Charger ouput voltage is temperature compensated and the temperature sensor is external, next to the battery system. Designed to meet safety agency requirements. APPLICATIONS These chargers are for industrial, computer, communications, commercial, and consumer applications. The microprocessor-based control of the charge algorithm permits a multitude of variations that can be tailored to each respective battery design in accordance with the recommendations of the battery manufacturer.  These variations of the charge algoritm are implemented in software, thus giving extensive flexibility without redesign cost penalties and design delays.

APPLICATIONS (Cont'd) The universal-input charger models can be powered from 15 ampere, 120 volt wall outlets and deliver 1250 watts of charging power into the battery system; whereas the same charger model can be powered from a 20 ampere, 240 volt wall outlet and deliver 2500 watts of charging power into the battery system. These chargers are ideal for use when batteries are repeatedly being discharged and recharged, such as in electric vehicles; and this version will rapidly re-charge batteries without danger of overcharge. These charger models are not typically connected to the battery system during discharge to a connected  load.  Contact our application engineers for discussions on those types of applications. (more to come)

UNIVERSAL-INPUT MODELS For Lead Acid Batteries Model No. Input Voltage, VAC (1) No. Batt. Cells (2) Fast Chg. Max. Volts (3),(4) Fast Max. Chg. Amps (2) End of Chg. Volts S4EB16/1Y88.2-28.4   S4EB16/1Y88.2-14.2 90 to 264 36  36 88.20  88.20 28.4(4)     14.2  82.80  82.80 S4EB16/1Y58.8-39.6 S4EB16/1Y58.8-21.2 90 to 264 24   24  58.80 58.80 39.6(4)    21.2  55.20 55.20 S4EB16/1Y44.1-51.0 S4EB16/1Y44.1-28.3 90 to 264 18   18  44.10 44.10 51.0(4)  28.3  41.4  41.4

120 VAC-INPUT MODELS For Lead Acid Batteries Model No. Input Voltage, VAC (1) No. Batt. Cells (2) Fast Chg. Max. Volts (3),(4) Fast Chg. Max. Amps (2) End of Chg. Volts S1EB16/1Y88.2-14.2  90 to 132 36 88.20  14.2(4)  82.80  S1EB16/1Y58.8-21.2  90 to 132 24 58.80 21.2(4) 55.20 S1EB16/1Y44.1-28.3 90 to 132 18 44.1 28.3(4) 41.4

UNIVERSAL-INPUT MODELS For Nickle Zinc Batteries, Pulse Charge Model No. Input Voltage, VAC (1) No. Batt. Cells (2)  Chgr Max. Volts Compl.                         (3),(4) Rated Constant Chg.   Amps  S4EB16/6Y88.2-28.4   S4EB16/6Y88.2-14.2 90 to 264 28 to 43 88.20  88.20  28.4(4)     14.2  S4EB16/6Y58.8-39.6 S4EB16/6Y58.8-21.2 90 to 264 21 to 28 58.80 58.80 39.6(4)       21.2  S4EB16/6Y44.1-51.0 S4EB16/6Y44.1-28.3 90 to 264 14 to 21 44.1  44.1  51.0(4)      28.3

120 VAC-INPUT MODELS For Nickle Zinc Batteries, Pulse Charge Model No. Input Voltage, VAC (1) No. Batt. Cells   (2)   Chgr Max. Volts Compl. (3),(4) Rated Constant Chg.  Amps S1EB16/6Y88.2-14.2 90 to 132 28 to 42 88.20 14.2(4)  S1EB16/6Y58.8-21.2 90 to 132 21 to 28 58.80 21.2(4) S1EB16/6Y44.1-28.3 90 to 132 14 to 21 44.1 28.3(4)

Footnotes:
(1)  Ask about special models for any number of cells not listed in the tables.
(2)  Special models can be offered with slightly lower (or higher) maximum voltage, if your battery requires.
(3)  Values of "charge currents" marked with (4) are the maximum for the case size; and in the universal input models, the maximum current applies for 230 or 240 vac input only and, if the universal input models are operated at 120 vac input voltage, the output current will be limited by the current limit of 12 amperes imposed on the input current for 120 vac wall receptacles by NEC and UL Standards.  Some models with lower charge current are also listed in the table.  If a different charge current is required for your application, "special models" can be offered.
(4)  Derate the "maximum charge currents" listed in the table by 4% per degree C above 45 degrees C ambient.  If a higher ambient rating is required, specify the ambient level and get a quotation along with the new maximum charge current.
(5)  Charge algorithm designators:  B16/1 for lead acid, B16/2 for nickle cadmium, B16/3 for nickle metal hydride, B16/4 for lithium ion, B16/5 for lithium polymer, and B16/6 for nickle zinc.

Input:
         Universal Input Models:  90 to 264 vac, 47 to 63 Hz.
         120 VAC Input Models:  90 to 132 vac, 47 to 63 Hz.
Short Circuit Protection:  Can be operated into a short circuit indefinitely without damage.
Reverse Battery Voltage Protection:  Protection is provided if customer installs a suitable fuse in one of
          the output connection leads between the charger and the battery.
Ambient Temperature, Operating:  0º C to +45º C; derate output charge current by 4% per degree C for
          expected ambient temperature above +45º C based on maximum current rating for model with largest
          rating in table of models above.
Fuse Protection:  The input is fused with an internal fuse mounted on the circuit board.
Input Connections:  IEC320(C20) male plug in the case; customer-furnished line cord with IEC320(C20) female
          on one end to plug into the charger unit and with applicable plug on the other end to plug into wall
          recepatacle.
Output Connector:  Anderson Power Pole Type SB-50 with Red pole for (+) output and Black pole for (-)
          output.
Size:  See outline drawings below.
Weight:  (later).
Case (Enclosure):  Metal enclosure, painted, black, with fan on one end and ventilation openings on
           the other end to provide for forced convection cooling.

Output:
        Universal Input Models:  See Table of Models (above) for lead acid batteries for the voltage and current
                    ratings, but the rated charge currents that are shown for "Universal-Input Models" in the Table
                    are only for condition of 230 or 240 vac input; and if the input power for those models is from a 120
                    vac, 15 ampere wall outlet, then the charge current will only be one-half (1/2) of the charge current
                    shown for the "Universal-Input Models" in the Table.  UL only allows 12 amperes to be drawn by
                    a charger unit that is plugged into a standard 15 ampere, 120 vac wall outlet, and these chargers
                    are designed to not exceed a current drain of 12 amperes with a 10% tolerance from the wall outlet.
         120 VAC Input Models:  See the "120 VAC-Input Models" section in the Table of Models (above) for
                    lead acid batteries for the voltage and current ratings.  UL only allows 12 amperes to be drawn by
                    a charger unit that is plugged into a standard 15 ampere, 120 vac wall outlet, and these chargers
                    are designed to not exceed a current drain of 12 amperes with a 10% tolerance from the wall outlet.
Output Current Waveshape:  Rectified sine squared waveform.
Output Voltage Waveshape:  DC level with superimposed ripple.
Charge Algorithm:

Regulation, End-of-Charge Peak Voltage:  ±1%, typical.
Regulation, Fast-Charge Peak Voltage:  ±2%, typical.
Regulation, Maximum Charge Current:  ±10%, typical; measured at 2 volts per cell output level at nominal
          line input (120 volts to 240 volts).
Fast-charge Cutback-of-Voltage Setpoint:  10% of rated maximum fast-charge current, typical.
LED Indication (Single Mode):  Red LED Is always "ON" but intensity is proportional to charge current.
LED Indication (Dual Mode):  Red LED is always "ON" but intensity is proportional to charge current.
          Green LED is "OFF" in fast-charge state, and "ON" in float-charge state.
Temperature Compensation:  Compensation of charge voltage set points is provided at the rate of -4 mv per
          degree C.  Sensor (thermistor) location is external at the end of a cable to be located near the battery.
 
 
 
 
 
 
 
 
 

1)  When battery is not in discharged state, ie. battery voltage is greater
     than 49.4 volts (or 2.06v/cell), then:
a)  Charger will charge battery with an output voltage set point of 55.2 volts (2.30 v/cell) and with a current limit of 20.0 amps;  and LED Indicator states will be as follows:
    (1)  POWER  will be “on”.
(2)  FAST CHARGE  will be “on” until battery voltage
      rises to 54.1 volts and then turn “off”.
(3)  TAPER CHARGE  will be “off”.

2)  When battery is in discharged state, ie. battery voltage is less than
  49.4 volts (or 2.06v/cell), then:
a)  Charger will initially charge the battery with an output voltage
      set point of 56.6 volts (2.36v/cell) and with a current limit of
      20.0 amps, and the LED Indicator states will be as follows:
(a)  POWER  will be “on”.
(b)  FAST CHARGE will be “on”.
(c)  TAPER CHARGE will be “on”,
         and then,
b)  The battery voltage will normally rise during the charge and when it reaches a level of 55.9 volts (2.33v/cell), or 98% of the 56.6 volt setpoint, a 3-hour timer will be started.  At the end of the 3 hours, the output voltage setpoint of the charger will drop to 55.2 volts (or 2.30v/cell), and the LED indicator states will be as follows:
(a)  POWER  will be “on”.
(b)  FAST CHARGE will be “on” until battery voltage rises to 55.9 volts and then will turn “off”.
(c)  TAPER CHARGE will be “on”  until 3 hours after the battery voltage reaches the 55.9 volt level and then will turn “off”  ie., to say another way, TAPER CHARGE will be “on” for 3 hours after FAST CHARGE turns “off”,
         or, if during 2b above,

c)  The battery will not increase in voltage in a normal manner and
      its voltage does not reach the voltage level of 55.9 volts, then a
     12-hour timer, that would have been started when the battery
     voltage rose above 49.4 volts (or 2.06v/cell), will time out and
     drop the output voltage set point to 55.2 volts (or 2.30v/cell);
      and the LED states will be as follows:
  (a)  POWER will be “on”.
(b)  FAST CHARGE  will continue to be “on” not
      only during the 12 hours after battery voltage
      reaches 49.4 volts but also will stay “on”
      thereafter if the battery voltage is below 54.1
      volts, until the charger is shut down.  If the
      voltage rises to 54.1 volts, then it will turn “off”.
(c)  TAPER CHARGE  will continue to be “on” for
      12 hours after battery voltage reaches 49.4 volts
       and then will turn “off”.

(Note:  The TAPER CHARGE is occurring when FAST CHARGE LED is “off”
    and TAPER CHARGE LED is “on”.)
 
 
 
 

Phase 2:  Charge at a constant voltage at the temperature-compensated gassing voltage (2.39 volts/cell or 85.9 volts at 25 degrees C) until the charge current level drops to approximately the C/50 rate; and then the charger will advance to Phase 3.  If the charge current does not drop to the approximate C/50 rate within 4 hours, then the charger will also advance to the Phase 3 charging at the end of the 4 hours time interval.

Phase 3:  Charge at a constant current rate of approximately the C/50 rate for about 2 to 4 hours (until overall cycle timer terminate the charging) during which time the voltage will be limited to 91.8 volts (2.55 volts/cell) so the current may taper off.

Note:  An overall charging cycle timer will limit the charger cycle to 12 hours.

OUTPUT VOLTAGE LIMIT (SETPOINT):  91.8vdc + or – 1%.

Example:  S4 D B2 FR 14.70 - 3.2 W 9 A 3 (Explanation indented to "start" directly under applicable section)

     Prefix:  S4: Switch-mode, universal input (90 to 264 vac, 47 to 63 Hz).
         Package:  D:  Desktop
               Output Type:  B1:  Single Mode (Float) Battery Charger
                                         B2:  Dual Mode (3-stage Charge) Fast Battery Charger
                        Case Size:  FR:  Desktop case, size (mm) 173 x 85.5 x 51.5
                                Rated Output Voltage, Volts:  Select from "Table of Standard Models"
                                                Rated Output Current, Amperes:  Select from Table
                                                        Input Plug Type:  W:  IEC320 male plug in case
                                                             Input Voltage & Frequency:  9:  90 to 264 vac, 47- 63 Hz
                                                                  Output Cord Connector:  A:  Stripped wires
                                                                                                                AC:  Alligator clips (Note 1)
                                                                                                                E:  Female barrel plug, 5.5 x
                                                                                                                         2.1 mm
                                                                                                                (Note: Other connectors
                                                                                                                     also avilable at extra cost)
                                                                      Output Cord Wire:  3:  20 AWG, 2-wire
                                                                                                           34: 20AWG,4-wire (Note 1)
Notes: (1)  The above markings, "(Note 1)", designate models that are not standard and therefore will have cost adders if they are specified.