Schweitzer Engineering SEL-351P, Quick Start Manual

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Date Code 990215 Testing and Troubleshooting 13-1
SEL-351P Manual Técnico
SECTION 13: TESTING AND TROUBLESHOOTING
I
NTRODUCTION
This section provides guidelines for determining and establishing test routines for the SEL-351P
Recloser Control. Included are discussions on testing philosophies, methods, and tools.
SEL-351P self-tests and troubleshooting procedures are shown at the end of the section.
T
ESTING
P
HILOSOPHY
Recloser control testing may be divided into three categories: acceptance, commissioning, and
maintenance testing. The categories are differentiated by when they take place in the life cycle
of the SEL-351P as well as in the test complexity.
The paragraphs below describe when to perform each type of test, the goals of testing at that
time, and the control functions that you need to test at each point. This information is intended
as a guideline for testing the SEL-351P.
Acceptance Testing
When: When qualifying a SEL-351P model to be used on the utility system.
Goals: a) Ensure that the SEL-351P meets published critical performance specifications such
as operating speed and element accuracy.
b) Ensure that the SEL-351P meets the requirements of the intended application.
c) Gain familiarity with SEL-351P settings and capabilities.
What to test: All protection elements and logic functions critical to the intended application.
SEL performs detailed acceptance testing on all new recloser control models and versions. We
are certain the recloser controls we ship meet their published specifications. It is important for
you to perform acceptance testing on a recloser control if you are unfamiliar with its operating
theory, protection scheme logic, or settings. This helps ensure the accuracy and correctness of
the control settings when you issue them.
Commissioning Testing
When: When installing a new protection system.
Goals: a) Ensure that all system ac and dc connections are correct.
b) Ensure that the SEL-351P functions as intended using your settings.
c) Ensure that all auxiliary equipment operates as intended.
What to test: All connected or monitored inputs and outputs, polarity and phase rotation of ac
connections, simple check of protection elements.
SEL performs a complete functional check and calibration of each SEL-351P before it is shipped.
This helps ensure that you receive a unit that operates correctly and accurately. Commissioning