2.3
Function Groups and Function Elements
The default overcurrent application template includes functions that are typically used in this type of device.
The appropriate analogue inputs are provided in the 7SR542 2-winding transformer relay and 7SR543 3-
winding transformer relays.
Figure
2-6,
Figure
the analogue inputs.
Additional functionality that is not dependent on analogue input quantities is common to all 7SR54 devices is
not shown in the figures below, these include:
•
CB and plant control
•
Trip/close circuit supervision
•
Autoreclose functionality
•
User logic schemes
Example – 7SR542
The 7SR542 transformer application templates are summarized in
[dw_7SR5_7SR5420ApplicationTemplate, 1, en_US]
Figure 2-6
Reyrolle 7SR5, Transformer Protection Device, Device Manual
C53000-G7040-C015-1, Edition 11.2019
2-7,
Figure
2-8, and
Figure 2-9
Application Template for 7SR5420 Devices
Basic Structure of the Device Functionality
2.3 Function Groups and Function Elements
below provide a summary of the functions available using
Figure 2-6
and
Figure
2-7.
29