Siemens 7SC80 Manual page 282

Functions
2.14 Automatic Reclosing System 79
Addresses 7212
to 7223 and
7250, 7251
For the 3rd cycle:
Address 7131
Address 7132
Addresses 7224
to 7235 and
7252, 7253
For the 4th cycle:
Address 7133
Address 7134
Addresses 7236
to 7247 and
7254, 7255
If you need inverse time overcurrent protection tripping characteristics for automatic reclosing, we recom-
mend selecting immediate dropout and not disk emulation. As there are no varying dropout times, the defini-
tion of the time parameters for automatic reclosing is much easier. The dropout behavior of the inverse time
overcurrent protection tripping characteristics is defined at Time overcurrent protection or Directional time
overcurrent protection.
Fifth to Ninth Reclosing Attempt
If more than four cycles are configured, the dead times set for the fourth cycle also apply to the fifth to ninth
cycle.
Blocking Three-Phase Faults
Regardless of which reclosing program is executed, automatic reclosing can be blocked for trips following
three-phase faults (address 7165 3Pol.PICKUP BLK). The pickup of all three phases for a overcurrent
element is the criterion required.
Blocking of Automatic Rreclosure via Internal Control
The automatic reclosure function can be blocked, if control commands are issued via the integrated control
function of the device. The information must be routed via CFC (interlocking task-level) using the CMD_Infor-
mation function block (see the following figure).
[blockierung-der-wiedereinschaltautomatik-26-06-02-kn, 1, en_US]
Figure 2-101
Zone Sequencing / Fuse Saving Scheme
Not for 7SC8***-**A**- versions
At address 7140 ZONE SEQ.COORD., the zone sequencing feature can be turned ON or OFF.
If multiple reclosing operations are performed and the zone sequencing function is deactivated, only those
reclosing cycles are counted which the device has conducted after a trip command. If the zone sequencing
function is switched on, an additional sequence counter also counts such automatic reclosures which (in radial
systems) are carried out by relays connected downstream. This presupposes that pickup of the 50-1/50N-1
elements drops out without a trip command being issued by a protection function initiating the automatic
reclosing function. The parameters at addresses 7200 to 7255 (see paragraph below at "Start and Blocking of
282
Cyclic control of the various protection functions before the 2nd
reclosing attempt
DEADTIME 3: PH Dead time for the 3rd reclosing attempt, phase
Dead time for the 3rd reclosing attempt ground
DEADTIME 3: G
Cyclic control of the various protection functions before the 3rd
reclosing attempt
DEADTIME 4: PH Dead time for the 4th reclosing attempt, phase
Dead time for the 4th reclosing attempt ground
DEADTIME 4: G
Cyclic control of the various protection functions before the 4th
reclosing attempt
Blocking of the automatic reclose function using the internal control function
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017