Seg HighTECH MRU3-2, Руководство пользователя

Страница: 6 / 36

6 TB MRU3-2 12.00 E
Writing over
If 1, 3 or 7 recordings are chosen, the relevant num-
ber of partial segments is reserved in the complete
memory. If the memory is full, a new recording will
always write over the oldest one.
The memory part of the fault recorder is designed as
circulating storage. In this example 7 fault records can
be stored (written over).
Memory space 6 to 4 is occupied.
Memory space 5 is currently being written in
Figure 3.3: Division of the memory into 8 segments, for example
Since memory spaces 6, 7 and 8 are occupied, this
example shows that the memory has been assigned
more than eight recordings. This means that No. 6 is
the oldest fault recording and No. 4 the most recent
one.
trigger occurence
recording duration
Tpre
[s]
Figure 3.4: Basic set-up of the fault recorder
Each memory segment has a specified storage time
which permits setting of a time prior to the trigger
event.
3.1.6 Parameter settings
System parameters
Uprim/Usek Primary/secondary measured value
display of the voltage transformers
D/Y Selection of switching groups
f
N
Rated frequency
LED-Flash Suppression of LED flashing after
activation
P2/FR Parameter switch/external trigger for the
fault recorder
Protection parameters
1/3 1-phase or 3-phase U</U> tripping
U< Pickup value for undervoltage
t
U<
Trip value for undervoltage low set element
U<< Pickup value for undervoltage
t
U<<
Trip value for undervoltage high set element
U> Pickup value for overvoltage
t
U>
Trip value for overvoltage low set element
U>> Pickup value for overvoltage
t
U>>
Trip value for overvoltage high set element
U1< Pick-up value for undervoltage in positive-
phase sequence system
t
U1<
Trip value for undervoltage in positive-
phase sequence system
U1> Pick-up value for overvoltage in positive-
phase sequence system
t
U1>
Trip value for overvoltage in positive-
phase sequence system
U2> Pick-up value for overvoltage in negative-
phase sequence system
t
U2>
Trip value for overvoltage in negative-
phase sequence system
U0> Pick-up value for overvoltage in zero-
phase sequence system
t
U0>
Trip value for overvoltage in zero-phase
sequence system
Parameters for the fault recorder
FR Number of disturbance events
FR Trigger events
FR Pre-trigger time T
vor
Date and time
Year Y = 00
Month M = 04
Day D = 18
Hour h = 07
Minute m = 59
Second s = 23
Additional functions
Blocking function
Relay configuration
Fault memory