Newmar Battery Chargers

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Phase Three Battery Chargers

The Phase Three series represents a new dimension in charger design and performance, employing "smart" switching circuitry which puts batteries through the optimum three-step charge process, adapts for gel-cell or lead-acid batteries, features precise voltage compensation for varying battery temperature, is rated for continuous duty and is housed in a rugged stainless steel case.

Phase Three Chargers interact with batteries by regulating both voltage and amperage through each phase of the charging process, depending on battery state of charge, temperature, impedance, duration at high rate, system demand and battery type. The result is rapid battery recovery without overcharge, properly maintained and conditioned batteries, adaptability to changing charge conditions and long battery life.

Features

Charge Characteristics

Three stage 'smart' charging: bulk, absorption, float.
lead-acid/gel-cell selector switch allows user to set optimum charge and float voltages based on battery type.
Temperature compensation automatically fine tunes output voltage based on battery temperature via remote sensor (optional).
Internal terminals for optional equalization timer connection.
High charge rate controlled by timer and current sensing circuit, switching to float rate even if there is a high continuous demand on any battery bank, preventing overcharge.
Charge cycle timer is initialized each time AC power is applied.
Charges battery and powers load simultaneously.
Multi-battery output, charges 3 independent banks based on demand.

Circuit Characteristics

Conservative circuit design, switching semiconductors selected to withstand over 200% of nominal power level.
Continuous duty rated to 50° C, with automatic high temperature power reduction.
Operates on 115/230 VAC 50-60 Hz. Can be used anywhere in the world. Accepts wide variation on input, produces full output even from an AC generator with a distorted sine wave output.
Fully functional as power supply without battery connected; well regulated stand alone power source if batteries fail. (See regulation/ripple opposite page)
Low EMI/RFI emission, compatible with on-board electronics.
Multiple units may be wired in parallel for high power systems. (See system examples, opposite page)

Indicators/Monitors

Ammeter displays total charge output current.
Power "ON" LED. (PT-70 + PT-24-35 only)
Remote panel indicates output status and allows manual reset of charge phase (optional).
Remote meter panel (optional) digitally displays battery voltage, up to 5 banks.

Protection

Stainless steel case with optional use drip shield included.
Current limited won't overload when charging dead batteries.
Variable speed thermally controlled fan with dust filter.
Automatic high temperature power reduction above 50° C.
Circuit board polyurethane conformal coated for use in marine/high humidity environments.
Timer limits absorption charge duration, preventing overcharge when under continuous load. (settable from 5 to 13 hours)

Model Specifications
 

▲ New
High Power System Specifications  *
 

* Systems shown are only examples. Multiple units of any identical output voltage may be wired in parallel to create a custom system.

High Power System Configuration Examples

Systems shown are only examples. Multiple units of any identical output voltage may be wired in parallel to create a custom system.

PT 24-55 or PT 110 System
PT 24-70 System
PT 24-105 System

Input Range

85-135 / 170-270 VAC (selectable)

47-63-Hz

(De-rate Models PT-24-20CE and PT-40CE from 560 watts @ 95 VAC to 500 watts @ 85 VAC.)

Output Regulation/Ripple*

Regulation:± 2% Line/Load

Ripple:12 Volt 250 mV P-P - 24 Volt 500 mV P-P
* without battery attached

Temperature Ratings-25° to +60° C

De-rate linearly from 100% @ 50° C to 75% @ 60° C

Certifications*: CE, UL, CSA

Approved To:

Safety: UL 1950, EN 60950, CSA C22.2 - No. 950

RF Emissions: Conducted: EN 55014

Radiated: EN 50082, IEC 801-4

Transient Voltage: EN 50082-1, IEC 801-4

Flicker: EN 61000-3-3

Electro Static: EN 50082-1, IEC 801-2

Ignition Protected per USCG CFR 183.410

Caries the CE mark

*Certification documentation available upon request.

Protection

Input fuse
Output fuse for reverse polarity protection
Forced air cooling with fan filter
Current limiting
Drip Shield, Stainless Steel case
Time & load controlled high rate charge time out circuit
Automatic high temp power reduction starting @ 50° C & full load, with thermal shutdown @ 60° C
Temperature compensation (via optional sensor)
Ignition Protected
 

Typical Charging Curve **



*Actual Charge and float voltages depend upon gel-cell/lead acid settings and /or temperature compensation function

**12 volt charge curve shown for 24 volt models, double the voltages shown on Y axis.


 

Options

Temperature compensation sensor with 25' cable and plug-in connector. Model: TCS-12/24
Remote panel with manual override of charge cycle, 25' cable and plug-in connector. Model: RP Dimensions: 4.75" x 3"; 12.1 x 7.6cm
Battery condition meter, selector switch for 5 banks. Model: Meter II Digital (specify 12 or 24 V) Dimensions: 5.25" x 3.75"; 13.3 x 9.5cm
Battery equalize (Installation option)

Typical Charger Installation

       

Optional Accessories

Temperature Compensation Sensor - Model TCS

   

Remote Indicator Panel - Model RP

   

Battery Condition Meter - Model METER-II DIGITAL

   


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