Installation and Commissioning
8-46 7SA6 Manual
C53000-G1176-C156-2
G
At the terminals of the device, check continuity for each pair of terminals that re-
ceives current from the CTs.
G Firmly re-insert the C–I/O–2 board. Carefully connect the ribbon cable. Do not bend
any connector pins! Do not use force!
G Check continuity for each of the current terminal-pairs again.
G 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
0235
PHASE SEQ.
in P.System Data1. 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 Check the analog outputs (if available and used).
o Close the protective switches to apply voltage to the power supply.
To Next Page
Loading...
Need help?
General