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Mounting And Commissioning
3.3 Commissioning
3.3.5
Commissioning Test
General Information
WARNING!
Warning of hazardous voltages when operating electrical devices
Nonobservance of the following measure will result in fatality, severe personal injury or substantial material
damage.
Only qualified people shall work on and around this device. They must be thoroughly familiar with all warnings
and safety notices in this instruction manual as well as with the applicable safety steps, safety regulations, and
precautionary measures.
For the commissioning switching operations have to be carried out. A prerequisite for the prescribed tests is
that these switching operations can be executed without danger. They are accordingly not meant for
operational checks.
WARNING!
Warning of dangers evolving from improper primary tests
Non-observance of the following measures can result in death, personal injury or substantial property damage.
Primary test may only be carried out by qualified personnel, who are familiar with the commissioning of
protection systems, the operation of the plant and the safety rules and regulations (switching, earthing, etc.).
Safety Instructions
All relevant safety rules and regulations (e.g. VDE 105, VBG4 or comparable national regulations) must be
complied with.
Before undertaking any work, observe the following "5 safety rules":
• Enable
• Secure against reswitching on
• Establish absence of voltage
• Earth and short circuit
• Cover or fence in live parts in the vicinity
In addition the following must be observed:
• Before making any connections, the device must be earthed at the protective conductor terminal.
• Hazardous voltages can exist in all switchgear components connected to the power supply and to
measurement and test circuits.
• Hazardous voltages can be present in the device even after the power supply voltage has been removed
(capacitors can still be charged).
• After removing voltage from the power supply, wait a minimum of 10 seconds before reenergizing the power
supply. This allows defined initial conditions when the device is re-energized.
90
SIPROTEC, 7VU681, User Manual
C53000-G1176-C368-1, Release Date 07.2012
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