Power Button
Connect Terminals
Connect Power Source
Power Button
Quick Evaluation Before Installation
This section provides you with basic information about the inverter and how to check its performance before installation.
Introduction
Quick Evaluation
Before Installation

10276_CPI2575_PH1 8/20/07 2:33 PM Page 4

Be sure to have on hand:

A 12 volt DC power source (such as a vehicle battery).

Power Source

The power source must provide

 

between 11 and 15 volts DC and

 

be able to supply enough current to

 

run the test load. As a rough guide,

 

divide the wattage of the test load by

 

10 to get the current (in amperes)

the power source must deliver.

Cables to connect the power source to the inverter (not included).

The cables must be as short and thick as possible in order to reduce the voltage drop between the power source and the inverter when it is drawing current from the power source.

If the cable suffers an excessive voltage drop, the inverter may shut down when drawing higher currents because the voltage at the inverter dropped below 10 volts.

#4 AWG stranded copper cable is recommended.

It should be no longer than four feet (one and one-half meters).

Quick Evaluation

Before Installation

Introduction

A test load that can be plugged into the AC receptacle on the inverter for short term testing at a low power level. The following cables are recommended for testing low power level test loads only.

Test Load

Test Load

Minimum

 

Power

Cable Size

 

100W

# 16 AWG copper

 

250W

# 12 AWG copper

 

500W

# 8 AWG copper

To check your inverter’s performance before installation:

1. Turn the inverter off (see page 14 for details). If the power source is a DC power supply, switch it off as well.

2.Connect cables to power input

terminals (see page 8 for details).

3. Connect cables to power source (see page 8 for details).

4. Check to make sure all connections are secure.

5. Turn the inverter on. If the power source is a DC power supply, switch it on first.

The end of the cable that connects to the inverter must have its insulation stripped off for about one-half inch (one and one-half cm) back from the end, exposing the bare copper.

The other end of the cable, which connects to the power source, must be terminated with a lug or other connector that provides a secure, low resistance connection.

For example, if the power source is a battery, the cable must be terminated with a battery terminal that clamps to the post on the battery.

Connect Test Load

USB Outlet

6.Plug in the test load.

The inverter should supply power to the load. If the inverter is not working properly, refer to the troubleshooting guide on page 20 or power and protection indicators section on page 16.

NOTE A USB device can be used to check the output of the USB Outlet.

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Cobra Electronics CPI 2575 warranty Quick Evaluation Before Installation, 100W, 250W, 500W