Thytronic DMC3S, Manual

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37
DMC3S - Manual - 08 - 2021
— Reset timers
For each threshold of the following protection functions:
• 32P
• 46
• 50/51
• 50N/51N
• 51N(E)
• 51N(Eme)
• 51(SQL)
• 59N
• 59N(eme)
• 67
• 67N
• 2ndh-REST
an adjustable reset time is available (symbol for the first threshold 32 ( t
P1>RES
, t
P2>RES
).
The start signal reset is delayed by an adjustable amount when the threshold violation condition
expires.
— Shrink time
For each threshold, programmed with an definite time characteristic, of the following protection
functions:
• 46
• 50/51
• 50N/51N
• 51N(E)
• 51N(Eme)
• 51(SQL)
• 67
• 67N
the contracted time can be selected.
When the breaker closes, during the operating time (e.g.:
tatcI>def
) the value of the trip time (e.g.:
t>def
) is replaced by the contracted time (e.g.:
tcI>def
).
When the operating time expires, the trip time is reset (e.g.:
t>def
).
P1> Start
P1> Trip
RESET
INPUT
tP1>RES
tP1>def tP1>def
tP1>RES tP1>RES
t
Timers for the first threshold of the active directional maximum power protection - 32P
tatcI>def
tcI>def t>def t>def
Timers for the first threshold of the overcurrent protection 50/51
BREAKER OPEN
Breaker state
Shrink time enable
Threshold timer (e.g.: I> 50/51)
t
BREAKER CLOSED
OFF
Shrink time trip
ON