1MRS750886-MUM
23
REU 513
User’s Guide
ABB Substation Automation
Products and Systems
Fig. 2.1.3.5.-3 Type C characteristics
2.1.3.6.
Settings
Two alternative setting groups, 1 and 2, are availabe for the relay. Either of these
setting groups can be used as the actual settings, one group at a time. Both the groups
have their related registers. Switching between the setting groups 1 and 2 enables
changing a whole group of settings at the same time. This can be done in one of the
following ways:
1. With parameter V150 via serial communication.
2. By means of an external binary input BI.
Values of the settings are altered with a personal computer provided with the Relay
Setting Tool.
Before the relay is connected to a system, one must assure that the relay has been
given correct settings. If there is any doubt about the settings, the setting values
should be read with the relay trip circuits disconnected or tested by applying an
adjustable voltage to the matching transformers of the relay. Refer to section “Check
lists” beginning from page 57.
1,0
0,7
0,4
k<, k<<
0,2
0,1
U/U<,
U/U<<
0,5
0,6
0,7
0,8
0,9
1,0
0,01
0,1
1
10
100
1000
uvolt_Cext
1,4
2,0
