User Curve - GE 350-A9 Instruction Manual

CHAPTER 6: SETPOINTS

User curve

350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
Table 6-1: Breaker open / Breaker closed status logic
52a contact 52b contact
configured configured
Yes Yes
Yes No
No Yes
No No
If the contact input selected under BKR CONNECTED setting is asserted, the breaker is
considered connected to the primary system. When the breaker is determined
disconnected, the breaker state is shown to be neither open, nor closed.
Table 6-2: Breaker status with both contacts configured
52a contact status
Off
On
On
Off
There is one user-programmable User Curve available with the 350 system. Refer to the S3
Protection/Current Elements/TOC Curves section for details on how to set the User Curve.
Due to the complexity of the configuration, the User Curve is available only through the
EnerVista 3 Series Setup program.
Breaker status
Open
52a contact open
52b contact closed
52a contact open
52b contact closed
Status unknown
52b contact status
On
Off
On
Off
S2 SYSTEM SETUP
Close
52a contact closed
52b contact open
52a contact closed
52b contact open
Breaker status
open
closed
BKR status failure
BKR status failure
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