2.2 Protection Data Interfaces and Protection Data Topology
55
7SD610 Manual
C53000-G1176-C145-4
If a test switch is to be used for changing to test mode, we recommed the following
procedure:
• Block the differential protection via a binary input.
• Use the test switch to activate/deactivate the test mode.
• Reset the blocking of the differential protection via the binary input.
2.2.2.3 Differential Protection Commissioning Mode
General In differential protection commissioning mode (commissioning mode in the following)
the differential protection does not generate TRIP commands. The commissioning
mode is intended to support the commissioning of the differential protection. It can be
used to control the differential and restraint currents, to visualise the differential pro-
tection characteristic and thus the operating point of the differential protection using
the „WEB Monitor“. By changing parameters, the operating point can be changed
without risk up to the generation of a pickup.
The commissioning mode is activated on a device of the protective device constella-
tion and also affects the other device (indication No. 3193 „Comm.Diff act.“). The
commissioning mode has to be deactivated on the device on which it was activated.
The commissioning mode can be activated/deactivated as follows:
• Using the integrated keypad: Menu Control/Taggings/Set: „Commissioning mode“
• Via binary inputs (No. 3260 „>Comm. Diff ON“, No. 3261 „>Comm. Diff
OFF“) if this was allocated
• In DIGSI with Control/Taggings: „Diff: Commissioning mode“
Principle of
function
Below, the logic is shown in a simplified way:
Figure 2-11 Logic diagram of the commissioning mode
There are two ways to set the commissioning mode. The first way is to use a command
(commissioning mode on / commissioning mode off) which is generated either when
operating the integrated keypad or when operating with DIGSI. The second way is to
use the binary inputs (No. 3260 „>Comm. Diff ON“, No. 3261 „>Comm. Diff
OFF“).
Depending on the way used for controlling the commissioning mode, either the indica-
tion „Comm Diff.ONoff“ (No. 3262) or „CommDiffONoffBI“ (No. 3263) is gen-
erated. The way used for deactivating the commissioning mode always has to be iden-
tical to the way used for activating. The indication „Comm. Diff“ (No. 3191) is
generated independently of the chosen way.
www . ElectricalPartManuals . com
To Next Page
Loading...
Need help?
General