Safety; Overview; General Rules - doble SFRA User Manual

2. Safety

Overview

General Rules

72A-2570-01 Rev. K 07/2011
This chapter reviews the standards and procedures you need to follow to use
the SFRA instrument safely. It contains the following sections:
• "Overview" on page 2-1
• "General Rules" on page 2-1
• "Grounding Requirements" on page 2-2
• "Personnel Safety Practices" on page 2-3
Safety cannot be over-emphasized when working on or around high-voltage
electrical apparatus. Companies that generate, transmit, distribute, or use
high-voltage electricity should, and do, have precise rules for safe practices
and procedures. These practices are important for personnel whose working
responsibilities involve testing and maintaining high-voltage apparatus and its
associated lines, cables, conductors, and accessories.
1. The transformer under test should be completely de-energized and isolated
from the power system before performing any tests using an M5000-series
SFRA instrument.
2. The method of testing a high-voltage apparatus (transformer) involves
exciting the apparatus with the SFRA instrument. Take care to avoid
contact with the apparatus being tested, its associated bushings and
conductors, and the SFRA instrument's cables and connectors.
3. The test crew must make a visual check to ensure that the apparatus
terminals are isolated from the power system. Because the apparatus under
test may fail, take precautions (such as barriers or entrance restrictions to
the test area) to avoid harm in case of violent failure.
2-1