Setting Information for the Protection Device in Feeder 1
The Arc protection function operates with 4 stages.
Stage 1 to 3:
•
Parameter: Operating mode = light only
•
Parameter: External trip initiation = no
•
Parameter: Operate & flt.rec. blocked = yes
•
Parameter: Channel = Arc mod. 1 channel 1 (Stage 1) → Monitoring busbar compartment in
feeder 1
Parameter: Channel = Arc mod. 1 channel 2 (Stage 2) → Monitoring CB compartment in feeder 1
Parameter: Channel = Arc mod. 1 channel 3 (Stage 3) → Monitoring cable-connection compart-
ment in feeder 1
Stage 4 (External trip initiation):
•
Parameter: Operate & flt.rec. blocked = no
•
Parameter: Operating mode = light only
•
Parameter: External trip initiation = yes
If an arc is detected in the cable-connection compartment of the feeder, the indication
Arc detected
is
sent to the protection device in the infeed.
The protection device in the infeed evaluates the current. If the measured current exceeds the thresholds
Threshold I> and/or Threshold 3I0>, the protection device in the infeed picks up. The pickup indi-
cation from the protection device in the infeed is injected via this stage into the feeder protection device.
This makes a selective tripping in the feeder possible.
Setting Information for the Protection Device in Feeder 2
The Arc protection function operates with 4 stages.
Stage 1 to 3:
•
Parameter: Operating mode = light only
•
Parameter: External trip initiation = no
•
Parameter: Operate & flt.rec. blocked = yes
•
Parameter: Channel = Arc mod. 1 channel 1 (Stage 1) → Monitoring busbar compartment in
feeder 2
Parameter: Channel = Arc mod. 1 channel 2 (Stage 2) → Monitoring CB compartment in feeder 2
Parameter: Channel = Arc mod. 1 channel 3 (Stage 3) → Monitoring cable-connection compart-
ment in feeder 2
Stage 4 (External trip initiation):
•
Parameter: Operate & flt.rec. blocked = no
•
Parameter: Operating mode = light only
•
Parameter: External trip initiation = yes
If an arc is detected in the cable-connection compartment of the feeder, the indication
Arc detected
is
sent to the protection device in the infeed.
The protection device in the infeed evaluates the current. If the measured current exceeds the thresholds
Threshold I> and/or Threshold 3I0>, the protection device in the infeed picks up. The pickup indi-
cation from the protection device in the infeed is injected via this stage into the feeder protection device.
This makes a selective tripping in the feeder possible.
Setting Information for the Protection Device in the Infeed
If arcs in the cable-connection compartments of the feeder shall be switched off selectively by the protection
device in the feeder, the following setting notes for the protection device in the infeed apply.
Protection and Automation Functions
7.29 Arc Protection
SIPROTEC 5, High-Voltage Bay Controller, Manual 929
C53000-G5040-C015-9, Edition 11.2017
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