ABB Relion 670 series, Техническое справочное руководство

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4.3.6 Technical data
Table 28: Time synchronization, time tagging
Function Value
Time tagging resolution, events and sampled measurement values 1 ms
Time tagging error with synchronization once/min (minute pulse
synchronization), events and sampled measurement values
± 1.0 ms typically
Time tagging error with SNTP synchronization, sampled measurement
values
± 1.0 ms typically
4.4 Parameter setting groups
4.4.1 Introduction
Use the six different groups of settings to optimize the IED operation for different
power system conditions. Creating and switching between fine-tuned setting sets,
either from the local HMI or configurable binary inputs, results in a highly adaptable
IED that can cope with a variety of power system scenarios.
4.4.2 Principle of operation
Parameter setting groups ActiveGroup function has six functional inputs, each
corresponding to one of the setting groups stored in the IED. Activation of any of these
inputs changes the active setting group. Seven functional output signals are available
for configuration purposes, so that up to date information on the active setting group is
always available.
A setting group is selected by using the local HMI, from a front connected personal
computer, remotely from the station control or station monitoring system or by
activating the corresponding input to the ActiveGroup function block.
Each input of the function block can be configured to connect to any of the binary
inputs in the IED. To do this PCM600 must be used.
The external control signals are used for activating a suitable setting group when
adaptive functionality is necessary. Input signals that should activate setting groups
must be either permanent or a pulse exceeding 400 ms.
More than one input may be activated at the same time. In such cases the lower order
setting group has priority. This means that if for example both group four and group
two are set to activate, group two will be the one activated.
Every time the active group is changed, the output signal GRP_CHGD is sending a pulse.
1MRK505222-UUS C
Section 4
Basic IED functions
95
Technical reference manual