Portawattz 1750 Owner's Manual
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Portawattz 1750 Owner's Manual

Dc to ac power inverter
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Summary of Contents for Portawattz 1750

  • Page 3: Table Of Contents

    8. Limited Warranty ..................29 9. Product Specifications..................31 9.1 Electrical Performance ..................31 9.2 Dimensions....................... 31 10. Other Products From Statpower Technologies........32 Portawattz is a trademark of Statpower Technologies Corporation. Copyright  1996, 1997, 1999 Statpower Technologies Corporation. All rights reserved.

  • Page 5: Introduction

    DC to AC inverters available today. It will give you years of dependable service in your boat, RV, service vehicle or remote home. To get the most out of your Portawattz 1750, it must be installed and used properly. Please read the installation and operating instructions in this manual carefully before installing and using your Portawattz 1750.

  • Page 6: Principle Of Operation

    2.1 Principle of Operation The Portawattz 1750 converts power in two stages. The first stage is a DC- to-DC converter which raises the low voltage DC at the inverter input to 145 volts DC. The second stage is the actual inverter stage. It converts the high voltage DC into 115 volts, 60 Hz AC.

  • Page 7: Quick Checkout

    AC receptacle and produces a low voltage output. If the label on the AC adapter or charger states that the adapter or charger produces a low voltage AC or DC output (less than 30 volts), the Portawattz will have no trouble powering this charger or adapter safely.

  • Page 8: Power Source

    3.1 Power Source For optimum performance, the power source must provide between 11 and 15 volts DC and must be able to supply sufficient current to operate the test load. As a rough guideline, divide the wattage of the test load by 10 to obtain the current (in amperes) the power source must deliver.

  • Page 9: Test Loads

    4 ft (1.5 m) long. Attach 5/16 inch ring terminals to the ends of the cables to be attached to the DC terminal studs on the Portawattz 1750. The ring terminals must be crimped with a proper crimping tool.

  • Page 10: Connections

    Figure 3. Connections to the Portawattz 3.4 Connections Follow the connection sequence described below. STEP 1 Ensure that the ON/OFF switch on the Portawattz 1750 is in the OFF position. If the power source is a DC power supply, switch it off as well.
  • Page 11 Portawattz 1750. Leave the test load switched off. STEP 8 Set the Portawattz 1750 ON/OFF switch to the ON position and turn the test load on. The Portawattz 1750 should supply power to the load.

  • Page 12: Installation

    4.1 Where to Install The Portawattz 1750 should be installed in a location that meets the following requirements: a) Dry - do not allow water to drip or splash on the Portawattz 1750. b) Cool - ambient air temperature should be between 0...

  • Page 13: Battery

    4.2 Battery The battery you use strongly affects the performance you can expect from your Portawattz 1750. It is important to connect the Portawattz 1750 to the correct size and type of battery. The following information will help you select the appropriate batteries for your application.

  • Page 14: Battery Sizing

    If your application involves relatively low power loads (i.e. average power consumption of 300 watts or less) and relatively short operating times before recharging (one hour or less), you may connect the Portawattz 1750 directly to the vehicle starting battery.
  • Page 15 To determine the battery capacity you require, follow these steps: STEP 1 For each piece of equipment you will be operating from the Portawattz 1750, determine how many watts it consumes. This can normally be found on a label on the product. If only the current draw is given, multiply the current draw by 115 to get the power consumption in watts.
  • Page 16 Equipment Power Operating Watt-Hours (Power Consumption Time x Operating Time) TV & VCR 115 watts 3 hours Sewing Machine 150 watts 1 hour Waterpik 90 watts 0.25 hour 22.5 Blender 300 watts 0.25 hour Coffee Maker 750 watts 0.3 hour Coffee Grinder 100 watts 0.1 hour...

  • Page 17: Using Multiple Batteries

    Using Multiple Batteries To obtain sufficient battery capacity you may need to use more than one battery. Two identical batteries can be connected + to + and - to - in a parallel system (see Figure 7) that doubles capacity and maintains the voltage of a single battery.

  • Page 18: Battery Tips

    Battery Tips Lead-acid batteries may emit hydrogen and oxygen gases, and sulfuric acid fumes when recharging. Vent the battery compartment to prevent accumulation of these gases, and do not install electronic or electrical equipment in the battery compartment. Do not smoke or carry an open flame when working around batteries.

  • Page 19: Alternators And Charging Systems

    Alternators and Charging Systems A good charging system is important for the health of your batteries. Poor recharging methods can quickly damage your batteries. When possible, recharge your batteries when they are about 50% discharged. This will give you much longer battery cycle life than recharging when the batteries are almost completely discharged.

  • Page 20: Cables

    Make sure that you use the appropriate battery charge controller for your energy source. Do not operate the Portawattz 1750 directly from a charging source such as an alternator or solar panel. The Portawattz must be connected to a battery or a well-regulated, high-current DC power supply to work properly.

  • Page 21: Connections

    WARNING! 115 Volt AC power is potentially lethal. Do not work on AC wiring while the wiring is connected to the Portawattz 1750 (even if it is switched off) unless the DC power source is physically disconnected from the inverter.
  • Page 22 These conditions can occur even if the inverter is switched off. When installing the Portawattz 1750 into an electrical system that also uses power from a generator or the utility line, you must include a means of switching between the Portawattz and the other power source that never allows both to be connected to the AC distribution system at the same time.

  • Page 23: Ground Wiring

    The Portawattz 1750 has a screw on the rear panel labeled Chassis Ground. This is to connect the chassis of the Portawattz 1750 to ground. The ground terminal in the AC outlet on the front panel of the Portawattz 1750 is connected to the chassis.

  • Page 24: Dc Wiring

    We recommend a Buss Fuse ANL-250 or equivalent if you are connecting the Portawattz 1750 with the recommended #2 AWG cable. STEP 1 Ensure that the ON/OFF switch on the Portawattz 1750 is in the OFF position. If you are using a battery selector switch, switch it off as well.
  • Page 25 COVERED BY YOUR WARRANTY. STEP 5 Connect the cable from the positive (red) terminal of the Portawattz 1750 to the positive terminal of the battery Main Fuse, or to the battery selector switch, if you are using one. Make a secure connection.

  • Page 26: Operation

    5. Operation To operate the Portawattz 1750, turn it on using the ON/OFF switch on the front panel. The Portawattz 1750 is now ready to deliver AC power to your loads. If you are operating several loads from the Portawattz 1750, turn them on separately after the Portawattz has been turned on.

  • Page 27: Operating Limits

    Battery Current Indicator The battery current bar graph indicates the current drawn from the battery by the Portawattz 1750. It will not indicate current drawn by other loads also connected to the battery. For long term operation, the current should remain in the green area of the bar graph.

  • Page 28: Input Voltage

    Portawattz 1750 is attempting to start the motor, this may be why the motor won't start. Make sure that the battery connections are good and that the battery is fully charged. If the connections are good and the battery is charged, but the voltage still drops below 11 volts, you may need to use a larger battery.

  • Page 29: Troubleshooting

    Portawattz 1750. This is because the power supply in the device does not adequately filter the modified sine wave produced by the Portawattz 1750. The only solution is to use a sound system that incorporates a higher quality power supply.

  • Page 30: Troubleshooting Guide

    Have qualified service technician check and replace fuse, OBSERVE CORRECT POLARITY. No output voltage, voltage High input voltage. Make sure that Portawattz indicator in upper red is connected to 12V zone. battery, check regulation of charging system. Low battery alarm on all...

  • Page 31: Maintenance

    Remove load. 7. Maintenance Very little maintenance is required to keep your Portawattz 1750 operating properly. You should clean the exterior of the unit periodically with a damp cloth to prevent accumulation of dust and dirt. At the same time, tighten the...

  • Page 32: Limited Warranty

    8. Limited Warranty (USA and Canada only) What Does This Warranty Cover? Statpower manufactures its products from parts and components that are new or equivalent to new, in accordance with industry standard practices. This warranty covers any defects in workmanship or materials. How Long Does The Coverage Last ? This warranty lasts for 6 months from the date of purchase.
  • Page 33 You must obtain a Return Authorization Number from Statpower before returning a product directly to Statpower. Do not return a product to Statpower without first obtaining a Return Authorization Number. When you contact Statpower to obtain service, be prepared to supply the serial number of your product and its date of purchase.

  • Page 34: Product Specifications

    9. Product Specifications 9.1 Electrical Performance Output Power 5 minutes: 1750 watts Continuous: 1500 watts Output voltage: 115 VAC RMS ± 5% Output waveform: Modified sine wave, phase corrected Output frequency: 60 Hz ± 0.01% Input voltage: 10 to 15 VDC Low battery alarm: audible, 10.7 volts...

  • Page 35: Other Products From Statpower Technologies

    Portawattz Inverters Value priced quasi-sinewave DC to AC inverters with power ratings from 140 watts to 3000 watts. TRUEcharge Battery Chargers Top quality smart battery chargers for deep-cycle batteries with charging current ratings from 10 amperes to 40 amperes.
  • Page 36 7725 Lougheed Highway Burnaby, BC Canada, V5A 4V8 Tel: (604) 420-1585 Fax: (604) 420-1591 www.statpower.com Part No. 445-0082-01 Rev. 1...

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