Seg MRI3-C, Руководство пользователя

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2 TB MRI(K)3-C 03.02 E
Contents
1 Introduction and Application
2 Characteristics and Features
3 Design
3.1 Connections
3.1.1 Analog
input circuits
3.1.2 Output relays
3.1.3 Digital inputs
3.1.4 Low/High range of the digital Inputs
3.2 Password
3.2.1 Code
jumpers
3.2.2 Password programming
3.2.3 Function of the output relays
3.3 Front plates
3.3.1 Indicating LEDs
3.3.2 Adjusting LEDs
3.4 Front plates (for ER/XR-relay types)
3.4.1 Indicating LEDs
3.4.2 Adjusting LEDs
4 Working principle
4.1 Analog circuits
4.2 Digital circuits
4.3 Status descriptions
4.3.1 „Inactive“
4.3.2
„Reclaim time“ tR
4.3.3 „AR-ready“
4.3.4
„AR-starting“ (dead time)
4.3.5 „AR-cycle“ (auto reclosing)
4.3.6 „AR-blocked“
4.3.7
„Fast Trip Mode“
4.3.8 „Blocking mode“
4.3.9 „Activating of AR“
4.3.10 Description of the status transition
4.3.11 AR information inputs
4.4 Functional
sequence
4.4.1 Switching on MRIK3-C
4.4.2 Circuit breaker manual closing
4.4.3 Circuit breaker manual open
4.4.4 Starting AR
4.4.5 Unsuccessful reclosing
4.4.6 Successful reclosing
4.4.7 Repeated reclosing
4.4.8 Supervision of the circuit breaker ready
information
4.4.9 External blocking
4.4.10 Time sequence diagrams of MRIK3-C
4.4.11 The unit is programmed for two shots,
successful AR at the second shot
4.4.12 The unit is programmed for two shots,
unsuccessful AR
4.4.13 Manual closing of the circuit breaker to
faulty lines
4.4.14 Unsuccessful AR
4.5 Earth fault protection
4.5.1 Generator stator earth fault protection
4.5.2 System earth fault protection
4.6 Earth-fault directional feature
(ER/XR-relay type)
4.7 Control functions
4.7.1 Introduction
4.7.2
Interlocking / Password for control mode
4.7.3 Operating assignment of C.B. control
4.7.4 Changing the operating assignment
4.7.5 Saving the operating assignment
4.7.6 Remote switching on and off of the C.B.
4.7.7 Switching on or off the C.B. via the front
panel (LCAL)
4.7.8 Handling of the control function
4.7.9 Display for the control functions
4.7.10 LED-indication under normal mode
4.7.11 LED-indication auto reclosing conditions
(AR)
4.8 Requirement on the Main Current
Transformers
5 Operation and Adjustments
5.1 Displayed text for parameter settings
5.2 Setting procedure
5.3 Parameter levels
5.4 System parameters
5.4.1 Presentation of Measuring Values as
Primary Quantities on the Display
(I
prim
Phase)
5.4.2 Display of residual voltage U
E
as primary
quantity (U
prim
/U
sec
)
5.4.3 Voltage transformer connection for resi-
dual voltage measuring (3pha/e-n/1:1)
5.4.4 Operation cycle counter
5.4.5 I
2*
t Operation cycle counter
5.4.6 Rated -Frequency
5.4.7 Indication of pickup
5.4.8 Parameter Set Changeover Switch (P2)
5.5 Protection Parameters
5.5.1 Pickup current for phase overcurrent
element
5.5.2 Trip Characteristics for the Phase Over-
current Element (I>)
5.5.3 Tripping Time or Time Factor for the
Phase Overcurrent Element
5.5.4 Fast/Time tripping by switch ON of the
CB for the overcurrent lement
5.5.5 Reset Mode for the Trip Characteristics
in the Phase Current Path
5.5.6 Current setting for high set element
5.5.7 Trip delay for high set element
5.5.8 Fast/Time tripping by switch ON of the
CB for the short ciruit element
5.5.9 Pickup value for residual voltage (U
E
)
(ER/XR-relay types)