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SamplexPower SAM-250-12 - User Manual

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SAM Series Power Inverter
OWNER’S MANUAL
For models: (12 V DC INPUT, 115V AC OUTPUT)
SAM-250-12
SAM-450-12
SAM-800-12
SAM-1000-12
SAM-1500-12
SAM-2000-12
SAM-3000-12
THIS MANUAL CONTAINS IMPORTANT INFORMATION REGARDING SAFETY,
OPERATION, MAINTENANCE AND STORAGE OF THIS PRODUCT. BEFORE
USE, READ AND UNDERSTAND ALL CAUTIONS, WARNINGS,
INSTRUCTIONS AND PRODUCT LABELS, PLUS YOUR VEHICLE’S BATTERY
MANUFACTURER GUIDELINES. FAILURE TO DO SO COULD RESULT IN
INJURY AND/OR PROPERTY DAMAGE.
Featured Design
Cool Surface Technology
Power Save Mode Technology
Soft Start Technology

Questions and Answers

  • F
    francisco28Aug 14, 2025
    Why does my SamplexPower SAM-250-12 Inverter low battery alarm keep sounding?
    • D
      Daniel BrennanAug 14, 2025
      If your SamplexPower Inverter's low battery alarm is sounding, it's likely due to low battery voltage. To resolve this, recharge or replace the battery.
  • D
    Douglas HoldenAug 18, 2025
    How to fix abnormal low battery alarm sound on SamplexPower SAM-250-12?
    • E
      Evelyn MendezAug 18, 2025
      If your SamplexPower Inverter's low battery alarm sounds abnormal, it might be due to a bad connection or wiring. Ensure that you tighten all DC connections to resolve this issue.
  • H
    Hunter HollandAug 21, 2025
    What to do if SamplexPower Inverter has no AC output, yellow LED is lit and green LED is not?
    • Z
      zmendozaAug 21, 2025
      If your SamplexPower Inverter has no AC output, and the Yellow LED is lit while the Green LED is not, it could be that the DC input is below 10 volts. Try to recharge or replace the battery to fix the problem.
  • D
    dorothy58Aug 25, 2025
    Why SamplexPower SAM-250-12 has no AC output, yellow LED is lit and green LED is not?
    • P
      Paul AlexanderAug 26, 2025
      If your SamplexPower Inverter has no AC output, and the Yellow LED is lit while the Green LED is not, it might be due to the inverter overheating and a thermal shutdown occurring. Remove or reduce the load, and then wait for the inverter to cool down.
  • J
    james43Aug 27, 2025
    How to fix SamplexPower SAM-250-12 when motorized power tool does not operate at correct speed?
    • R
      Ricardo EstesAug 27, 2025
      If your SamplexPower Inverter's motorized power tool does not operate at the correct speed, it may be due to a purely inductive load. To address this, make the load not purely inductive. You can try operating an incandescent lamp at the same time as the motor.
  • L
    Laura RodriguezAug 31, 2025
    How to eliminate TV/Radio interference (snow, buzz) from SamplexPower SAM-250-12?
    • A
      Anna SpencerAug 31, 2025
      If your SamplexPower Inverter's TV/Radio is experiencing interference such as snow in the picture or a buzz in the speaker, it could be that the appliance is too close to the inverter. Keep the inverter and antenna distant from each other. Use shielded antenna cable and connect the antenna with an amplifier.
  • J
    Justin JohnsonSep 3, 2025
    What to do if SamplexPower SAM-250-12 Inverter has non-continuous AC output and red LED is blinking?
    • A
      anndrakeSep 3, 2025
      If your SamplexPower Inverter has non-continuous AC output, and the Red LED is blinking on and off while the Green LED is lit, the inverter output power is likely limited by an overload or short circuit protection circuit. Reduce the load or remove the short circuit.
  • T
    Tyler BrooksSep 6, 2025
    Why won’t my motorized power tool start with SamplexPower SAM-250-12 Inverter?
    • B
      Bryce WatsonSep 6, 2025
      If your SamplexPower Inverter's motorized power tool won’t start, it might be drawing excessive wattage and is incompatible with the inverter. If appliance does not start, then appliance is drawing excessive wattage and will not work with inverter.
  • K
    Kerry McdonaldSep 10, 2025
    What causes SamplexPower SAM-250-12 to latch up with red and green LEDs lit?
    • A
      Andrea BellSep 10, 2025
      If your SamplexPower Inverter has no AC output (latch up), and both the Red and Green LEDs are lit, the earth fault protection has been activated due to excessive current leakage from the load. Unplug the faulted load.

Summary

Important Safety Instructions

General Warnings

Warnings to reduce the risk of fire, electric shock, explosion, or injury during operation.

Operational Cautions

Cautions advising against conditions and practices that may result in inverter damage or failure.

Cable Requirements

Information on cable gauge, length, and connection security for optimal inverter performance.

Introduction

Key Technologies

Overview of L.I.T., UP-Circuit, and Soft Start circuits improving inverter performance and protection.

How Your Inverter Works

Principle of Operation

Details the two-stage DC to DC and DC to AC conversion process the inverter uses.

Output Waveform Characteristics

Explains the 'modified sine wave' output and measurement considerations with standard voltmeters.

Installation and Environments

Power Source Requirements

Specifies the DC input voltage range (10.5-15.5V) and current supply needs for the inverter.

Installation Notes

Mounting and Ventilation Guidelines

Provides guidance on mounting orientation, ventilation, and placement for optimal and safe operation.

Electrical Connection Precautions

Highlights critical cautions regarding battery voltage (12V only) and secure, polarity-correct connections.

Connecting to a Power Source

External Fuse and DC Cable Selection

Guide for selecting appropriate fuses, cable gauges, and lengths based on inverter wattage.

Connection to Load

Operating Environment Criteria

Specifies optimal conditions for inverter placement, including temperature, ventilation, and protection from moisture.

Operating Tips

Appliance Power Draw Considerations

Explains how to match appliance power needs, including startup surge, to the inverter's capacity.

Battery Size Calculation

Provides a method to determine the appropriate battery capacity for sustained inverter operation.

Protective Features of the Inverter

Over Temperature Protection

Automatic shutdown when internal temperature exceeds limits, requiring cooldown.

Low Battery Voltage Protection

Automatic shutdown when input voltage drops below 10.0V to protect the power source.

Over Voltage Protection

Automatic shutdown when input voltage exceeds 15.5V to prevent inverter damage.

Overload Protection

Automatic shutdown when continuous output draw exceeds rated wattage.

Short Circuit Protection

Automatic shutdown to prevent damage from short circuits.

Earth Fault Protection

Shuts down inverter upon detecting significant current leakage to ground, preventing shock.

Low Battery Alarm

Audible alarm signals when battery voltage drops to 10.6V, indicating recharge is needed.

Special Features

Model Specific Features

Comparison table detailing USB port, remote control, resettable fuse, DC terminal cover, and smart fan availability by model.

Common Problems

Power Tool and Microwave Oven Startup Issues

Addresses why power tools and microwaves may not start and the need for higher startup wattage.

Audio System Buzzing

Explains buzzing in audio systems due to modified sine wave filtering and suggests higher quality sound systems.

Television Interference

Provides corrective measures for TV interference, including positioning and antenna cable quality.

Troubleshooting Guide

Inverter Power Switch Turned On Issues

Table listing common troubles, possible causes (e.g., low voltage, overheat, fuse), and suggested remedies.

Specifications

Product Specifications Summary

Details output connection, voltage, waveform, efficiency, input voltage, and internal fuse.

SamplexPower SAM-250-12 Specifications

Power IconPower
output voltage115 volt AC RMS 60 Hz
input voltage12.5 volt DC
Performance IconPerformance
max efficiency90%

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