2 Functions
44
7SD610 Manual
C53000-G1176-C145-4
stance, during the test of the protection equipment, when the system-side load current
cannot be cut off and the test current is injected in parallel to the load current.
While the time SI Time all Cl. (address 1132, see above) is activated following
each recognition of line energization, SI Time Man.Cl (address 1150) is the time
following manual
closure during which special influence of the protection functions is
activated (e.g. the switch-on pickup threshold for the differential protection). This pa-
rameter can only be altered in DIGSI at Additional Settings.
Note
For CB Test and automatic reclosure the CB auxiliary contact status derived with the
binary inputs >CB1 ... (No. 366 to 371, 410 and 411) are relevant for the circuit breaker
test and for the automatic reclosure to indicate the CB switching status. The other
binary inputs >CB ... (No. 351 to 353, 379 and 380) are used for detecting the status
of the line (address 1134) and for reset of the trip command (address 1135). Address
1135 is also used by other protection functions, e.g. energization in case of overcur-
rent etc. For use with one circuit breaker only, both binary input functions, e.g. 366 and
351, can be allocated to the same physical input. For applications with 2 circuit break-
ers per feeder (1.5 circuit breaker systems or ring bus), the binary inputs >CB1... must
be connected to the correct circuit breaker. The binary inputs >CB... then need the
correct signals for detecting the line status. In certain cases, an additional CFC logic
may be necessary.
Address 1136 OpenPoleDetect. defines the criteria for operating the internal open
pole detector (see also Chapter 2.16.1, Section Open Pole Detector). When using the
default setting w/ measurement, all available data are evaluated that indicate single-
pole dead time. The internal trip command and pickup indications, the current and
voltage measured values and the CB auxiliary contacts are used. To evaluate only the
auxiliary contacts including the phase currents, set the address 1136 to Current
AND CB. If you do not wish to detect single-pole automatic reclosure, set
OpenPoleDetect. to OFF.
Under address 1151 SYN.MAN.CL it can be determined whether a manual closure of
the circuit breaker is to be performed via binary input. If manual closing is to be per-
formed is to be performed without synchronism check, set SYN.MAN.CL = w/o
Sync-check. To not use the MANUAL CLOSE function of the device, set
SYN.MAN.CL to NO. This may be reasonable if the close command is output to the
circuit breaker without involving the 7SD610, and the relay itself is not desired to issue
a close command.
For commands via the integrated control (on site, DIGSI, serial interface) address
1152 Man.Clos. Imp. determines whether a close command via the integrated
control regarding the MANUAL CLOSE handling for the protective functions (like in-
stantaneous re-opening when switching onto a fault) is to act like a MANUAL CLOSE
command via binary input. This address also informs the device to which switchgear
this applies. You can select from the switching devices which are available to the inte-
grated control. Select the circuit breaker which operates for manual closure and, if re-
quired, for automatic reclosure (usually Q0). If none is set here, a CLOSE command
via the control will not generate a MANUAL CLOSE impulse for the protective function.
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