Section 4 Bio-Tester Relion® Rex640; Application Examples - ABB Relion REX640 User Manual

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Section 4
4.1
BIO-Tester Relion® REX640
User Manual
BIO-Tester Relion® REX640

Application examples

The health of the protection system depends on the quality of work done in all project
phases, such as engineering, installation and commissioning, as well as the care taken
during routine periodical testing. It is also important to check different engineering,
testing and commissioning aspects, such as the application configuration, including
relay settings, and protection and control schemes. Applying good engineering
practices improves the effectiveness of the protection system, which can prevent
equipment damage, and most importantly, ensures personnel safety.
Protection relays are not intended only for protection, but they should also fulfill
requirements regarding control, measurement and communication, for instance.
Binary inputs and outputs (BIOs) play an important role in the overall operation of
protection relays, for example, in various control and interlocking schemes and by
generating alarm and trip signals to the circuit breaker. In addition to secondary
injection testing of protection functions, it is advisable to check the health of important
hardware such as BIOs. Incorrect operation of the control scheme may result in
process or revenue loss, including safety threats to the personnel or damage to the
equipment. BIOs can be checked already at the primary design stage to ensure the
correctness of the logic as well as during routine maintenance and testing.
BIO testers have been developed to facilitate the testing of BIOs and provide several
benefits.
• Save time in configuration testing
• Reduce the risk of configuration errors
• Safe to operate
• Easy to use
• Easy to bring on site due to small size
• Create new relay testing and repair service opportunities
®
BIO-Tester Relion REX640 is intended for testing the BIOs of multifunction
REX640 relays. This easy-to-use and compact tester enables simulation of the
protection and control scheme operation.
The testers can be used for troubleshooting during the application configuration
design and for routine maintenance and testing. They help wiring the signals from the
test equipment when testing the application configuration during the engineering
period. Test switches and indication LEDs simulate process signals when testing the
logic IED configuration. PCM600 Application Configuration in online mode and
Testing and Commissioning pages of the REX640 LHMI together with BIO-Tester
offer many possibilities to test and verify the logic.
BIO-Tester Relion® REX640
Section 4
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