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Associated with the Generator's Starting Battery

• Prime and Back-Up Power Generators
• Standby Water Pumps and Flood Control
• Uninterruptible Power Supply (UPS) Systems
• Solar Photovoltaic Charging and Hybred Systems

• Automatic 3-Stage Charge Control, with Temperature Compensation
• Automatic Equalize Charge
• Voltage and Current Control
• Charges Either 12 or 24 Volt Batteries
• Extensive Battery Monitoring

• Can Eliminate The Engine’s Alternator
• Available in Either AC or DC Models
• All Input Voltages Available
• Can Operate from a Solar Photovoltaic Array
• Electronic Battery Heater Control
• Digital Display of Voltage and Current
• Reduces the Engine Exercise Requirements

• Current Sensor in the Positive Circuit
• Over-Voltage and Over-Current Disconnect
• Reverse Polarity Protected
• Weather-Resistant Enclosure
• Alarm Relay, Dry Contact; Form C
• Uses a Connector in Place of a Terminal Strip

Of notable advantage in telecommunications and UPS applications are the large 24 and 48 volt battery banks which can provide the power input into the Model 9600 in place of the AC utility power. The advantages are:

• More reliable starting. If the engine does not start and the starting battery is weak, there is the opportunity to recharge the battery independent of utility power and try again. The energy demand on the battery bank to recharge the starting battery is negligible.

• Simple installation. DC generator systems will require only the positive and negative wires; no AC lines are routed to the battery charger for starter battery maintenance.

For standby pumps and flood control systems without access to utility power, the Model 9600 combined with photovoltaic module(s) will provide the most reliable means of starting the engine. The battery is under a regulated charge five to eight hours a day, as opposed to weekly engine exercise.

The Model 9600 has an efficiency of approximately 95%. This high efficiency eliminates the requirement for an open and ventilated enclosure required to keep the charger cool, because very little heat is generated. Polar can incorporate a sealed enclosure. Another advantage; very little energy is drawn from the source of power to the charger.

The sealed corrosion resistant enclosure design with the electrical connector interface makes this charger ideal for harsh environments found in oil field and marine applications.

The alarm features, along with the over-voltage, and overcorrect controls, make the Model 9600 ideal for UPS applications operating critical DC loads.

Polar Power’s automatic charger incorporates the latest circuit technologies and charging algorithms to maximize battery reliability and longevity. The PWM (Pulse Width Modulation) control of current and voltage is a very significant improvement over the older SCR type battery chargers. Polar Power’s PWM circuitry provides enhanced reliability, lower charging ripple, compact size, and the ability to operate from a DC source of power. The advanced charging algorithm provides automatic temperature compensated three stage charge control. The equalization charge is automatic; no operator intervention is required. Polar Power’s advanced algorithm optimizes the charging requirements of lead-acid, nickel-cadmium, sealed "gel-cell," and maintenance-free type batteries.

1. Input power turns on; the charger applies a trickle current and waits until the battery voltage rises to point VT before applying full current. This is an important feature to prevent the battery from "boiling" and losing its electrolyte if there is a shorted cell.

2. The battery voltage reaches VT, turns off the trickle charge and now applies the full current (I max) output of the charger. This first stage of charging is referred to as the bulk charge. Bulk charging quickly restores the battery for another round of engine cranking.

3. Transition voltage V12 is reached and the charger indicates that it is now in the second stage of charging; equalize. The charger is now charging at a constant potential (voltage).

4. Battery voltage approaches the equalize level (VE) and the charge current begins to taper.

5. Charge current tapers to IET. The charger senses the drop in current as the battery becomes fully charged, and changes to the third stage; float. The battery voltage is held at VF.

6. Here, a load (greater than I max) begins to discharge the battery.

7. The load discharges the battery, causing the voltage to fall below V31. The charger is now in the bulk rate again.

• Maximum current output (I-max)

• Float voltage (VF)

• Equalize current termination (IET)

• Trickle charge termination (VT)

• Transition voltage (V12)

The automatic application of equalize and float charging ensures the battery is brought up to full charge with the minimum amount of water loss, or gassing. Temperature compensation is one of the most important features, providing optimum charging during changes in the environment. These charging features greatly improve the life and reliability of using sealed and maintenance free batteries.

National Electric Codes (NEC) requirements are met with the elimination of the diode or transistors in the negative circuit. Current sensing is in the positive circuit and galvanically isolated. A short in the negative circuit external to the charger will not affect the current sense.

The output current is controlled and the voltage is regulated; however, should these circuits fail, a relay within the charger will open the circuit to the battery. The same relay is used to help prevent system damage if the battery is connected with reverse polarity.

The Model 9600 is available with a terminal strip in place of the connector assembly. Using a connector improves safety and reliability because there are no exposed terminals which can accidentally become shorted, and the connections are shielded against the environment.

Battery monitoring is advanced with Polar Power’s "low voltage while cranking" (LVWC) monitor. This feature monitors low voltage battery conditions during engine cranking. Monitoring the battery voltage under an engine cranking load will provide the best indication of battery integrity. As the battery deteriorates with age, its voltage will continue to drop under a load. Upon reaching a field-adjustable low voltage set point (measured only during engine cranking), the general fault relay is latched. The alarm is reset using a momentary switch on the front panel, or remotely through the panel connector. Batteries can now be replaced at the end of their service life (typically four to six years) rather than on scheduled maintenance intervals of two to three years. This helps preserve our environment.

Corrosion resistant, hard anodized aluminum cover and chassis, equipped for rack, table, or wall mounting. The enclosure is sealed and weather resistant. The control panel consists of digital volt and amp meters, alarm reset switch, on/off circuit breaker, and operational LED monitors.

Model 9612

Model 9624

Nominal Voltage

Adjustable float

Equalize voltage over float

Temperature compensation

Adjustable output current

Adjustable no load detection

Adjustable LVWC

Overvoltage alarm

Undervoltage alarm

Meter accuracy / resolution

3½ Digit 3% accuracy

thermostat (cut in)

Thermostat differential (cut out)

Max heater relay current

50 amp 1 amp

1 amp

DC input voltage*

20-36 36-88

36-88 Vdc

DC input wattage

Efficiency

96%

Dimensions**

8.5O wide x 9.5O high x 2.6O deep

Ambient temperature range

-40 to +55 °C

** Dimensions for all AC input models are 8.5O wide x 9.5O high x 5O deep.