Table of Contents
Advertisement
Baker AWA-IV Instrument Overview
Setting Up the Baker AWA-IV Tester
Selecting an Optimal Environment
„
The Baker AWA-IV requires adequate ventilation. Place the analyzer where air can freely circulate around it.
„
Avoid locations in direct sun or near heat sources.
„
Do not stack objects on or near the analyzer.
To prevent shock hazard, do not expose the analyzer to rain, snow, or moisture.
„
Avoid locations with high levels of dirt or dust.
„
Making Basic Connections and Starting the Analyzer
1. Place the Baker AWA-IV on a large table or bench. Check the power switch and ensure it is in the Off position.
2. Plug one end of the power cable into the line connector on the left side of the analyzer and plug the other end
into a grounded wall socket. The analyzer will operate between 85–264 VAC 50/60Hz.
3. Locate the keyboard/mouse USB unit. Plug the unit into one of the USB ports.
4. If an external storage device will be used, plug it into one of the USB ports.
5. Turn the power switch to the On position.
6. As the analyzer powers up, various BIOS messages will appear on the screen.
7. The analyzer will automatically log in to the software with the associated serial number information.
NOTE: An administrator can change this to log into the Windows desktop; however, we recommend that you do
not change it. If passwords are changed and the instrument is returned for service without the passwords, the
instruments hard drive will be reformatted and all user-saved data may be lost.
Connecting Test Leads to a Motor for Testing
How test leads are connected to the motor you want to test will vary depending on the specific AWA-IV model you
will be using and the type of test you will be conducting. For example, the AWA-IV 12 kV model has a separate set
of low-voltage test leads used during resistance testing, while the AWA-IV 6 kV model has only the high-voltage test
leads, which are used for all testing functions.
In most applications, test lead 1 is connected to phase A of the motor under test, lead 2 to phase B, and lead 3 to
phase C. In single phase or two-lead applications, only one red lead (typically lead 1) would be used while the other
two leads are left disconnected.
Ensure that you understand how leads should be connected for your application.
NOTE: AWA test leads use Kelvin (4-wire) resistance measurement that uses an active current source, reduces the
effect of lead resistance, and gives an accurate resistance measurement. Each side of a lead clip contributes to the
measurement process; one is the supply and the other reads back to the tester. For this reason, it is important to
ensure that both parts of the lead clips are seated well when testing.
CAUTION: Ensure that you understand how leads should be connected for your application before energizing the
tester. Ensure that all safety precautions are taken to keep yourself and others safe, and to ensure proper equipment
operation, and to avoid damaging the equipment or the unit under test.
10
Baker AWA-IV 71-015 EN V16 User Guide
www.megger.com
Advertisement
Table of Contents
