Rockwell Automation Publication 825-UM004D-EN-P - November 2012 147
Chapter 11
Testing & Troubleshooting
Overview
Relay testing is typically divided into two categories. Relay tests are performed:
• when the relay is installed or commissioned and
• periodically once the relay is in service
Th
is chapter provides information on both types of testing for the 825-P relay.
Beca
use the 825-P is equipped with extensive self-tests, traditional periodic test
procedures can be eliminated or reduced.
If a problem occurs during either commissioning or periodic tests, this chapter
provides a guide to isolating and correcting the problem.
Testing
Commissioning Tests
Introduction
Each 825-P is fully calibrated and functionally tested prior to shipment. This
helps to ensure that you receive a relay that operates correctly and accurately.
Commissioning tests must verify that the relay is properly connected to the
motor and all auxiliary equipment. Verify control signal inputs and outputs.
Use an AC connection check to verify that the relay current and voltage inputs
are of the proper magnitude and phase rotation.
Brief functional tests ensure that the relay settings are correct. It is not necessary
to test every element, timer, and function in these tests.
The following procedure is a guideline to help you enter settings into the 825-P
and to verify that it is properly connected. Modify the procedure as necessary to
conform to your standard practices. Use this procedure at initial relay installation;
you do not need to repeat it unless major changes are made to the relay electrical
connections.
Required Equipment
Before proceeding with commissioning tests, ensure the following equipment is
present and properly installed as stated.
• 825-P Relay — installed and connected according to your protection
desi
gn
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