operational. The setting CT CONNECTION = NO allows the device to be operated without any current trans-
former connection; all current-induced functions and parameters are then hidden.
Address 110 Trip mode is only valid for devices that can trip single-pole or three-pole. Set 1-/3pole to also
enable single-pole tripping, i.e. if you want to utilize single-pole or single-pole/three-pole automatic reclosure.
This requires that an internal automatic reclosure function exists or that an external reclosing device is used.
Furthermore, the circuit breaker must be capable of single-pole tripping.
All functions are set to Disabled by default. This has no effect on the presetting of LEDs, binary inputs and
binary outputs.
NOTE
If you have changed address 110, save your changes first via OK and reopen the dialog box since the other
setting options depend on the selection in address 110.
If the device features an automatic reclosing function, address 133 and 134 are of importance. Automatic
reclosure is only permitted for overhead lines. It must not be used in any other case. If the protected object
consists of a combination of overhead lines and other equipment (e.g. overhead line in unit with a trans-
former or overhead line/cable), reclosure is only permissible if it can be ensured that it can only take place in
the event of a fault on the overhead line. If no automatic reclosing function is desired for the feeder at which
7VK61operates, or if an external device is used for reclosure, set address 133 Auto Reclose to Disabled.
Otherwise set the number of desired reclosing attempts there. You can select 1 AR-cycle to 8 AR-cycles.
You can also set ADT(adaptive dead times); in this case the behavior of the automatic reclosure function is
determined by the cycles of the remote end. The number of cycles must however be configured at least in one
of the line ends which must have a reliable infeed. The other end — or other ends, if there are more than two
line ends — may operate with adaptive dead time. Section provides detailed information on this topic
2.2 Automatic reclosure function (optional) .
The AR control mode at address 134 allows a total of four options. On the one hand, it can be determined
whether the auto reclose cycles are carried out according to the fault type detected by the pickup of the
starting protection function(s) (only for three-pole tripping) or according to the type of trip command. On the
other hand, the automatic reclosure function can be operated with or without action time.
The setting Trip with T-action / Trip without T-action ... (default setting = Trip with T-
action) is preferred if
1-polige or 1-/3-polige auto reclose cycles are provided for and possible. In this case,
different dead times (for every AR cycle) are possible after 1-pole tripping and after 3-pole tripping. The
protection function that issues the trip command determines the type of trip: 1-pole or 3-pole. The dead time
is controlled dependent on this.
The setting PICKUP. ... (With PICKUP ...) is only possible and visible, when only 3-pole tripping should occur,
i.e., only 3-pole tripping is configured (address 110 Trip mode = 3pole only, see above). In this case you
can set different dead times for the auto-reclose cycles following
1-, 2- and 3-phase. The decisive factor here is
the pickup situation of the protective functions at the instant the trip command disappears. This control mode
enables also the dead times to be made dependent on the type of fault in the case of three-pole reclosure
cycles. Tripping is always three-pole.
The setting ... and tact (with ... action time ) provides an action time for every reclose cycle. The action
time is started by a general pickup of all protection functions. If no trip command is present before the action
time expires, the corresponding reclosure cycle is not carried out. Section provides detailed information on
this topic 2.2 Automatic reclosure function (optional) . This setting is recommended for time-graded protec-
tion. If the protection function which is to operate with automatic reclosure, does not have a general pickup
signal for starting the action times, select Trip without T-action... (without action time).
For the trip circuit supervision set at address 140 Trip Cir. Sup. the number of trip circuits to be moni-
tored: 1 trip circuit, 2 trip circuits or 3 trip circuits, unless you omit it Disabled).
Settings
Addr.
Parameter Setting Options Default Setting Comments
103 Grp Chge OPTION Disabled
Enabled
Disabled Setting Group Change Option
2.1.1.3
Functions
2.1 General
SIPROTEC 4, 7VK61, Manual 27
C53000-G1176-C159-5, Edition 05.2018
To Next Page
Loading...
