ManEnerg
CBConfig
AND
AND
AND
AND
AND
AND
B1QOPEN
B1QCLD
B2QOPEN
LN1QOPEN
LN2QOPEN
B2QCLD
OR
OR
OR
OR
BLKENERG
BLOCK
AND
AND
AND
1½ bus CB
1½ bus alt. CB
Tie CB
OR
AND
manEnergOpenBays
IEC14000032-1-en.vsd
IEC14000032 V1 EN-US
Figure 403: Open bays
Fuse failure supervision
M14837-3 v10
External fuse failure signals or signals from a tripped fuse switch/MCB are connected to binary
inputs that are configured to the inputs of SESRSYN (25) function in the IED. Alternatively, the
internal signals from fuse failure supervision can be used when available. There are two alternative
connection possibilities. Inputs labelled OK must be connected if the available contact indicates
that the voltage circuit is healthy. Inputs labelled FF must be connected if the available contact
indicates that the voltage circuit is faulty.
The VB1OK/VB2OK and VB1FF/VB2FF inputs are related to the busbar voltage and the VLNOK and
VLNFF inputs are related to the line voltage. Configure them to the binary input or function
outputs that indicate the status of the external fuse failure of the busbar and line voltages. In the
event of a fuse failure, the energizing check function is blocked. The synchronism check function
requires full voltage on both sides, thus no blocking at fuse failure is needed.
Voltage selection
M14836-3 v9
The voltage selection module including supervision of included voltage transformers for the
different arrangements is a basic part of the SESRSYN (25) function and determines the voltages
fed to the Synchronizing, Synchrocheck and Energizing check functions. This includes the selection
of the appropriate Line and Bus voltages and MCB supervision.
The voltage selection type to be used is set with the parameter
CBConfig.
If
No voltage sel. is set the voltages used will be V-Line1 and V-Bus1. This setting is also used in the
case when external voltage selection is provided. Fuse failure supervision for the used inputs must
also be connected.
1MRK 502 066-UUS B
Section 14
Control
759
Technical manual
Содержание Relion 670 series
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