Smooth Start Series User Instructions for Model STP-1500 Power Inverter Model STP-1500
Safety Information IMPORTANT Read all the Cautions and Warnings before installing and using the power inverter. The inverter must be properly installed. IMPORTANT If you are not familiar with 12 volt high current wiring, it is recommended that you have a professional automotive installer install the inverter. CAUTION The power inverter generates 115 VAC power from your 12 volt car battery. Treat the 115 VAC output just like you treat the 115 VAC in your house. Keep children away from the unit.
Table of Contents Safety Information ...................................................................................................2 Introduction..............................................................................................................4 Key Features ............................................................................................................4 Package Includes......................................................................................................
Introduction Congratulations on your purchase of a Sima Products Corporation power inverter. It provides 115 VAC anywhere you have 12 DC volts in your car, truck, RV or boat. It is designed to be easy to use and provide years of dependable service. Key Features High-efficiency operation to provide the most output with the least battery power.
Overview of the Power Inverter The STP-1500 power inverters are electronic devices that convert the low voltage 12 VOLTS DC from a battery or other power source to 115 VAC to run standard household appliances. See the section on How it Works to learn more about the technology used in these power inverters.
Installation Installation Overview There are three basic steps you need to follow when installing the power inverter. 1) Mounting: Mount the inverter securely 2) Wiring: Wire the inverter to a 12 VOLT source 3) Testing: Test for proper operation Step #1: Mounting the Inverter The power inverter should be secured to a solid flat surface capable of handling the weight of the unit.
Step #2: Wiring Inverter to 12 volt Power The power inverter requires connection to a standard 12 volt DC power source as found in most cars, trucks, RVs and boats. The power source must provide between 11 and 15 volts DC. The power source must be able to provide sufficient current to power the load. See the chart below that shows minimal wire sizing and current draw at full load.
Permanent Installation Figure 3, Wiring the STP-1500 power inverter Caution: Always use adequate wire size and fusing for any installation Wiring Steps • Disconnect the positive battery terminal before doing any wiring to the inverter. • Using proper sized copper wire and proper terminations, wire the inverter to the electrical system and fuse block. See your local RV dealer or automotive shop for wire, connectors, fuse block and other wiring parts. Tighten all connections firmly, but do not over tighten.
• Double check all wiring for proper polarity. • Install the fuse and reconnect the wire to the battery. Note, a slight spark and beep from the inverter is normal when the unit is first connected to 12 volt power. Advanced Installation Large inverters can draw high currents from your battery and charging system especially when used with appliances and tools that use a lot of power. In these applications, you may need to increase the capacity of your 12 volt system. There are several ways to do this.
Operation Equipment Power Usage It is important to use only products that draw less than the power rating of the power inverter. Use of products greater than the rated power rating may either cause the protection circuitry of the power inverter to shut down or the fuse to blow. Repeated use of excessive power draw can cause failure of the power inverter. How to calculate power usage. Most products have a power rating on them such as 45 watts. Others may be marked with their current draw, such as .9 amps.
Power Usage 100 watt 200 watt 500 watt Battery Life Chart Approximate Typical operation time 12 volt with 50 amp-hour car Current battery 9 Amps 5.5 hours 19 Amps 2.6 hours 47 Amps 1 hour Typical operation time with 100 amphour car battery 11 hours 5.2 hours 2 hours Actual Current Draw Approximate 12 volt current draw is the load in watts divided by 10. Thus a 60 watt light bulb plugged into the inverter will cause the inverter to draw 6 amps (60 / 10 = 6) from the 12 volt supply.
How the Inverter Works The Sima Products Corporation power inverter has two electronic sections. The first section converts 12 volts DC to approximately 160 volts DC using modern high frequency conversion techniques that uses small lightweight efficient transformers. The second section converts the 160 volts DC to 115 VAC using high efficiency power MOSFET transistor devices. The inverters generate a modified sine wave that works with almost every product on the market.
Troubleshooting Problem Unit does not operate Unit operates for a short period and then turns off Cause Input voltage is below 10 volts Fuse blown Load is trying to draw too much current Unit operates for a Inverter is in thermal while and gets warm shutdown mode Low battery alarm is Input voltage is below on 10.
Product Specifications Key Features Input Input no-load current Output type Output, Watts, 10 minutes continuous Output, peak Frequency, +/- 1% Outlets Efficiency Protection Thermal Low battery alarm (10.2v) Low battery shutdown (9.5v) Output short circuit Over voltage (15v) Size (inches) Weight: unit/gross Package Includes: User Manual Cables with ring terminals STP-1500 12 - 15 volts DC < 0.8 A modified sine wave 1,500W 1,200W 3,000W 60 Hz 2 85-90% yes yes yes yes yes 3” x 4.75” x 16.25” 8.
Limited Warranty Sima Products Corporation (“Company”) warrants that if the accompanying product proves to be defective to the original purchaser in material or workmanship within 90 days from the original retail purchase, the Company will, at the Company’s option, either repair or replace same without charge (but no cash refund will be made).
