2
TB MRU3-1 12.00 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 Reset
input
3.1.4 Output
relays
3.1.5 Fault
recorder
3.1.6 Parameter
settings
3.2 LEDs
3.3 Front
plate
4 Working principle
4.1 Analog
circuits
4.2 Digital
circuits
4.3 Voltage
supervision
4.3.1
Selection of star or delta connection
4.4 Blocking
function
5 Operations and settings
5.1 Display
5.2 Setting
procedure
5.3 Systemparameter
5.3.1
Display of residual voltage U
E
as
primary quantity (U
prim
/U
sec
)
5.3.2
∆
/Y – Switch over
5.3.3
Setting of nominal frequency
5.3.4
Display of the activation storage
5.3.5
Parameter switch/external triggering for
the fault recorder
5.4 Protection
parameters
5.4.1
1-phase or 3-phase U</U>-
tripping
5.4.2
Parameter setting of over- and under-
voltage supervision
5.4.3
Adjustment of the slave address
5.4.4
Setting of Baud-rate (applies for Modbus-
Protocol only)
5.4.5
Setting of parity (applies for Modbus-
Protocol only)
5.5
Parameter for the fault recorder
5.5.1
Adjustment of the fault recorder
5.5.2
Number of the fault recordings
5.5.3
Adjustment of trigger occurences
5.5.4
Pre-trigger time (T
pre
)
5.6
Date and time
5.6.1
Adjustment of the clock
5.7
Indication of measuring values
5.7.1 Measuring
indication
5.7.2
Unit of the measuring values displayed
5.7.3
Indication of fault memory data
5.8 Fault
memory
5.9 Additional
functions
5.9.1
Setting procedure for blocking the
protection functions
5.9.2 Reset
5.9.3
Erasure of fault storage
6 Relay testing and commissioning
6.1 Power-On
6.2
Testing the output relays
6.3
Checking the set values
6.4
Secondary injection test
6.4.1 Test
equipment
6.4.2
Example of the test circuit
6.4.3
Checking the input circuits and
measuring functions
6.4.4
Checking the operating and resetting
values of the over/undervoltage
functions
6.4.5
Checking the relay operating time of the
over/undervoltage functions
6.4.6
Checking the external blocking and reset
functions
6.5 Primary
test
6.6 Maintenance
7 Technical Data
7.1
Measuring input circuits
7.2 Common
data
7.3
Setting ranges and steps
7.3.1 Interface
parameter
7.3.2
Parameter for the fault recorder
7.4 Output
relays
8 Order form
Содержание MRU3-1
Страница 1: ...MRU3 1 AC voltage relay...