P/F Shots Sub-Menu; E/F Shots Sub-Menu - Siemens 7SR18 Solkor Manual

Reyrolle protection devices, energy management, line differential relay
Table of Contents

Advertisement

7SR18 Description Of Operation
4.4

P/F Shots Sub-Menu

This menu allows the Phase fault trip/reclose sequence to be parameterized:-
79 P/F Prot'n Trip1
79 P/F Deadtime 1
79 P/F Prot'n Trip2
79 P/F Deadtime 2
79 P/F Prot'n Trip3
79 P/F Deadtime 3
79 P/F Prot'n Trip 4
79 P/F Deadtime 4
79 P/F Prot'n Trip5
79 P/F HighSet Trips to Lockout Sets the number of allowed HighSet trips. The relay will go to Lockout on the
79 P/F Delayed Trips to Lockout Sets the number of allowed Delayed trips, Relay will go to Lockout on the last
4.5

E/F Shots Sub-Menu

This menu allows the Earth Fault trip/reclose sequence to be parameterized:-
As above but E/F settings.
Unrestricted Page 54 of 78
The first protection Trip in the P/F sequence can be set to either Inst or Delayed.
Sets the first Reclose Delay (Dead time) in the P/F sequence.
The second protection Trip in the P/F sequence can be set to either Inst or Delayed.
Sets the second Reclose Delay (Dead time) in the P/F sequence.
The third protection Trip in the P/F sequence can be set to either Inst or Delayed.
Sets the third Reclose Delay (Dead time) in the P/F sequence.
The fourth protection Trip in the P/F sequence can be set to either Inst or Delayed.
Sets the fourth Reclose Delay (Dead time) in the P/F sequence.
The fifth and last protection Trip in the P/F sequence can be set to either Inst or
Delayed.
last HighSet Trip. This function can be used to limit the duration and number of high
current trips that the Circuit Breaker is required to perform, if the fault is permanent
and close to the Circuit Breaker then there is no point in forcing a number of Delayed
Trips before the Relay goes to Lockout – that sequence will be truncated.
Delayed Trip. This function limits the number of Delayed trips that the Relay can
perform when the Instantaneous protection Elements are externally inhibited for
system operating reasons - sequences are truncated.
©2018 Siemens Protection Devices Limited

Hide quick links:

Advertisement

Table of Contents
loading

Table of Contents