Seg HighTECH MRU3-2, Руководство пользователя

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2 TB MRU3-2 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 External reset input
3.1.4 Output relays
3.1.5 Fault recorder
3.1.6 Parameter settings
3.2 Display
3.3 LEDs
3.4 Front
plate
4 Working principle
4.1 Analog circuits
4.2 Digital circuits
4.3 Selection of star or delta connection
4.4 Voltage supervision
4.4.1 1-phase/3-phase supervision
4.4.2 Principle of the voltage unbalance
protection
4.4.3 Measuring principle
4.4.4 Negative sequence system of a
symmetrical voltage system
4.4.5 System with voltage unbalance
4.4.6 Zero sequence system
5 Operations and settings
5.1 Display
5.2 Setting
procedure
5.3 System parameter
5.3.1 Display of residual voltage U
E
as primary
quantity (U
prim
/U
sec
)
5.3.2 D/Y – Switch - over
5.3.3 Setting of nominal voltage
5.3.4 Display of the activation storage
5.3.5 Parameter set change-over switch/
external trigger 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 Positive sequence system voltage
(U1<, U1>)
5.4.4 Negative sequence system overvoltage
(U2>)
5.4.5 Zero sequence system overvoltage (U0>)
5.4.6 Adjustment of the slave address
5.4.7 Setting of Baud-rate (applies for Modbus-
Protocol only)
5.4.8 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 (Tvor)
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 in faultless condition
5.7.4 Indication after pickup/tripping
5.7.5 Indication of the phase sequence
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
6.4.1 Example of the test circuit
6.4.2 Checking the input circuits and
measuring functions
6.4.3 Test of the symmetrical components
values
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