2
TB XRI1-IE 11.01 E
Contents
1 Introduction and application
2 Features and characteristics
3 Design
3.1
Connections
3.1.1 Analog input circuits
3.1.2 Blocking input
3.1.3 External reset input
3.1.4 Output relays
3.1.5 Data communication
3.2
Front plate
3.2.1 Indication and operation elements
3.2.2 LEDs
3.2.3 Display
3.2.4 Parameter settings (see chapter 6)
4 Working principle
4.1
Analog circuits
4.2
Digital circuits
4.3
Earth fault protection
4.3.1 Generator stator earth fault protection
4.3.2 System earth fault protection
4.4
Requirements on the main current
transformers
5 General operations and settings
5.1
Push buttons
5.1.1 Indication of measuring values and fault
data
5.2
DIP switches
5.2.1 Function of the output relays
5.3
Reset
5.4
Password
5.4.1 Password programming
5.4.2 Using the password
5.5
Relay setting principle
5.5.1 Setting of default parameters
5.5.2 Blocking the protection function
5.6
Display of software version and test-TRIP
5.7
Low/high range of functions blocking and
reset
6 Operations and settings
6.1
Setting procedure
6.1.1 Pickup current for phase overcurrent
element (I>)
6.1.2 Time current characteristics for phase over-
current element (CHAR I>)
6.1.3 Trip delay or time multiplier for phase over-
current element (t
I>
)
6.1.4 Reset setting for inverse time tripping
characteristics in the phase current path
6.1.5 Current setting for high set element (I>>)
6.1.6 Trip delay for high set element (t
I>>
)
6.1.7 Pickup current for earth fault element (I
E>
)
6.1.8 WARN/TRIP changeover
6.1.9 Time current characteristics for earth fault
element (CHAR IE)
6.1.10 Trip delay or time multiplier for earth fault
element (t
IE>>
)
6.1.11 Reset mode for inverse time tripping in
earth current path
6.1.12 Current setting for high set element of earth
fault supervision (I
E>>
)
6.1.13 Trip delay for high set element of earth
fault supervision (t
IE>>
)
6.1.14 Nominal frequency
6.1.15 Adjustment of the slave address
6.1.16 Setting of Baud-rate (applies for Modbus
Protocol only)
6.1.17 Setting of parity (applies for Modbus
Protocol only)
6.1.18 Circuit breaker failure protection t
CBFP
6.1.19 Display of the activation storage (FLSH/NOFL)
6.1.20 Blocking the protection functions and
assignment of the output relays
6.2
Setting value calculation
6.2.1 Definite time overcurrent element
6.2.2 Inverse time overcurrent element
6.3
Indication of measuring and fault values
6.3.1 Measuring values
6.3.2 Indication of fault data
6.3.3 Fault recorder
6.4
Reset
7 Relay testing and commissioning
7.1
Power-On
7.2
Testing the output relays and LEDs
7.3
Checking the set values
7.4
Secondary injection test
7.4.1 Test equipment
7.4.2 Test circuit of
XRI1-IE
7.4.3 Checking the input circuits and measured
values
7.4.4 Checking the operating and resetting
values of the relay
7.4.5 Checking the relay operating time
7.4.6 Checking the high set element of the
relay
7.4.7 Checking the external blocking and reset
functions
7.4.8 Test of the CB failure protection
7.5
Primary injection test
7.6
Maintenance
