Siemens siprotec 7SA522, Руководство пользователя

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Installation and Commissioning
8-23
7SA522 Manual
C53000-G1176-C119-2
q
Firmly re-insert the I/O–2 board. Carefully connect the ribbon cable. Do not bend
any connector pins! Do not use force!
q
Check continuity for each of the current terminal-pairs again.
q
Attach the front panel and tighten the screws.
o
Connect an ammeter in the supply circuit of the power supply. A range of about 2.5 A
to 5 A for the meter is appropriate.
o
Close the protective switches to apply voltage to the power supply. Check the polarity
and magnitude of the voltage at the device terminals.
o
The measured steady-state current should correspond to the quiescent power con-
sumption of the device. Transient movement of the ammeter merely indicates the
charging current of capacitors.
o
Remove the voltage from the power supply by opening the protective switches.
o
Disconnect the measuring equipment; restore the normal power supply connections.
o
Apply voltage to the power supply.
o
Close the protective switches for the voltage transformers.
o
Verify that the voltage phase rotation at the device terminals is correct. Note that the
device can be set for L1-L2-L3 rotation or L1-L3-L2 rotation under address
3+$6(6(4
in
36\VWHP'DWD
. See also Sub-section 6.1.1.
o
Open the protective switches for the voltage transformers and the power supply.
o
Check the trip circuits to the power system circuit breakers
o
Check the close circuits to the power system circuit breakers
o
Verify that the control wiring to and from other devices is correct.
o
Check the signalling connections.
o
Close the protective switches to apply voltage to the power supply.