9424200994 Rev N 361Introduction to TestingThe need to test protection systems to confirm performance as designed by manufacturers has alwaysexisted. However, numeric system design is changing the industry testing paradigms that have been inuse since the first protective relay was built. Each time a fault occurs, the numeric protection system istested, and because of its fault and event recording capability, the test is documented. In the unlikelyevent of a protection system problem, continuous monitoring along with remote communicationscapability provide for removing the affected device from service, auto switching to backup systems, andimmediate notification of an attended facility. These features have virtually eliminated the need forperiodic maintenance. Simple acceptance tests that verify the integrity of the BE1-11g measuring circuitsand commissioning tests that verify the BE1-11g “electronic wiring” (control logic) are Basler Electric’srecommended pre-installation tests.The testing chapters provide guidelines for performing these tests and others. For assistance inconducting BE1-11g self-tests and troubleshooting using internal diagnostics, contact Basler ElectricTechnical Support Services.Testing PhilosophiesTesting is generally divided into the following categories:• Acceptance• Commissioning• Periodic (user scheduled maintenance)• FunctionalWhile all types of tests can be performed, all users do not generally perform these tests. Likewise, thedegree to which you will conduct each type of test depends on need, economics, and perceived systemvalue.Acceptance TestingAcceptance testing confirms that a particular BE1-11g delivered to a customer meets publishedspecifications. Because this is a numerical device whose characteristics are defined by software, BaslerElectric does not require the user to test each operational setting in the BE1-11g. Successful completionof the Acceptance Test verifies proper response of the protection system’s input and output circuits aswell as its response to all external sensing input quantities (voltage, current, frequency).Basler Electric performs detailed acceptance testing on all devices to verify all functions meet publishedspecifications. All products are packaged and shipped with the strictest standards. The BE1-11g is amicroprocessor-based device whose operating characteristics will not change over time. The BE1-11g willalso not experience any change in operating characteristics during transit. However, it remains importantthat the user perform these acceptance tests to verify the device has not suffered any degradation intransit. Basler Electric warrants all products against any decay in performance outside of the publishedspecified tolerances that result from problems created during transit.Commissioning TestingCommissioning testing verifies all physical connections and functional aspects of the BE1-11g for a newinstallation. This includes a thorough review and documentation of the operational settings to verify thatthe users calculated values match the actual values on each enabled protection element of the BE1-11g.All of the following connections or functions can be verified during commissioning tests:• Proper connection and sensing of current and voltage signals as applicable• Connections of I/O contacts• I/O sensing versus virtual sensingBE1-11g Introduction to Testing
