Basler BE1-CDS220, Instruction Manual

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BE1-CDS220 Testing And Maintenance 13-1
SECTION 13
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TESTING AND MAINTENANCE
GENERAL
The need to test protective relays to confirm performance as designed by relay manufacturers will always
exist. This Section provides guidelines for performing those tests and others. It also provides guidelines
for performing maintenance on, and troubleshooting the BE1-CDS220 relay. Included are discussions on
testing philosophies and methods, requirements, and expected outcomes. For assistance in conducting
relay self-tests and troubleshooting using internal diagnostics, contact Basler Electric, Customer Service.
TESTING PHILOSOPHIES
Testing is generally divided into several categories and is known by various names:
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Acceptance (or integrity)
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Commissioning
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Periodic (or maintenance)
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Functional (application)
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Performance
While all types of tests may be performed, they are not generally performed by all users. Likewise, the
degree to which you will conduct each type of test depends on need, economics, and perceived system
value.
Acceptance Testing
Acceptance (or integrity) testing is intended to confirm through basic tests, that a particular relay that has
been manufactured and shipped meets published core specifications. Some of the more rudimentary
procedures will provide a good foundation for application-specific tests that may be delved into during
functional or commissioning tests. Generally, while basic in nature, these tests validate proper relay
manufacturing and shipping and usually precede any functional or commissioning tests.
Basler Electric performs detailed acceptance testing on all devices to verify all functions meet published
specifications. All products are packaged and shipped using strict standards and will remain intact and
precise during shipping. The BE1-CDS220 relay is a microprocessor-based relay whose operating
characteristics will not change over time. The relay will not experience changes in operating
characteristics during transit. However, it remains material that you perform these basic acceptance tests
to verify the device has not suffered any degradation in transit. Basler Electric warrants all products
against any decay in performance outside of the published specified tolerances that result from problems
created during transit.
Commissioning Testing
Commissioning testing verifies all physical connections and functional aspects of the protective relay for a
new installation. All of the following connections or functions can be verified during commissioning tests:
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Proper connection and sensing of current and voltage signals as applicable
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Connections of I/O contacts
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I/O sensing versus virtual sensing
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Setting validation
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Proper operation of equipment (main or auxiliary)
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Proper alarming (to SCADA) and/or targeting
Periodic Testing
Periodic (or maintenance) testing can be performed at regularly scheduled intervals or upon an indication
of problems or questionable operations within the relay. Verifying the integrity of the relay performance
(short of playback of recorded events) may be necessary by performing certain tests similar to those
accomplished in the acceptance and/or functional tests. Verification that the relay is measuring signals