Settings - Siemens SIPROTEC 4 7VK61 Manual

Functions
2.4 Synchronism and voltage check (optional)
[sync-einphasenanschluss-l-e-131102-kn, 1, en_GB]
Figure 2-24
Notes on the Information List
The most important information messages of the device are briefly explained below, except those already
detailed in the following lists or in the previous paragraphs.
>Sync. Start MC (No. 2905)
Binary input which enables direct initiation of the synchronism check with setting parameters for manual
close. This initiation with setting parameters for manual close always has precedence if binary inputs
Start MC (No 2905) and >Sync. Start AR (No 2906, see below), are activated at the same time.
>Sync. Start AR (No. 2906)
Measuring request from an external automatic reclosure device. The parameters of synchronism check set for
automatic reclosure are valid here.
Sync. req.CNTRL (No. 2936)
Measurement request of the control function; this request is evaluated on event-triggered basis and only
generated if the control issues a measurement request.
Sync. release (No. 2951)
Release signal to an external automatic reclosure device.

Settings

2.4.3
Addresses which have an appended "A" can only be changed with DIGSI, under "Additional Settings".
Addr. Parameter
3501 FCT Synchronism
3502 Dead Volt. Thr.
3503 Live Volt. Thr.
3504 Umax
94
Example of a single-phase phase-to-earth connection
Setting Options
ON
OFF
ON:w/o CloseCmd
1 .. 100 V
20 .. 125 V
20 .. 140 V
Default Setting Comments
ON Synchronism and Voltage Check
function
5 V Voltage threshold dead line / bus
90 V Voltage threshold live line / bus
110 V Maximum permissible voltage
C53000-G1176-C159-5, Edition 05.2018
>Sync.
SIPROTEC 4, 7VK61, Manual