Commissioning
!
WARNING
Warning of dangerous voltages when operating an electrical device
Non-observance of the following measures can result in death, personal injury or substantial prop-
erty damage.
²
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.
²
The device is to be grounded to the substation ground before any other connections are made.
²
Hazardous voltages can exist in the power supply and at the connections to current transformers,
voltage transformers, and test circuits.
²
Hazardous voltages can be present in the device even after the power supply voltage has been
removed (capacitors can still be charged).
²
After removing voltage from the power supply, wait a minimum of 10 seconds before re-energizing
the power supply. This wait allows the initial conditions to be firmly established before the device is
re-energized.
²
The limit values given in Technical Data (Chapter 10) must not be exceeded, neither during testing nor
during commissioning.
When testing the device with secondary test equipment, make sure that no other measurement quantities are
connected and that the TRIP command lines and possibly the CLOSE command lines to the circuit breakers are
interrupted, unless otherwise specified.
!
DANGER
Hazardous voltages during interruptions in secondary circuits of current transformers
Non-observance of the following measure will result in death, severe personal injury or substantial
property damage.
²
Short-circuit the current transformer secondary circuits before current connections to the device are
opened.
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 opera-
tional checks.
!
WARNING
Warning of dangers evolving from improper primary tests
Non-observance of the following measures can result in death, personal injury or substantial prop-
erty damage.
²
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.).
3.3
Mounting and Commissioning
3.3 Commissioning
SIPROTEC 4, 7VE61 and 7VE63, Manual
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