11.1.3 Setting guidelines
M12397-17 v8
The parameters for Current circuit supervision CCSSPVC are set via local HMI or
Protection and Control Manager PCM600.
Common base IED values for primary current (IBase), primary voltage (UBase)
and primary power (SBase) are set in the global base values for settings function
GBASVAL.
GlobalBaseSel: It is used to select GBASVAL function for reference of base
values.
Operation: This is used for current circuit supervision function Off/On.
Current circuit supervision CCSSPVC compares the residual current from a two-
phase set of current transformer cores with the neutral point current on a separate
input taken from another set of cores on the same current transformer.
IMinOp: It must be set as a minimum to twice the residual current in the supervised
CT circuits under normal service conditions and rated primary current.
Ip>Block: It is normally set at 150% to block the function during transient
conditions.
The FAIL output is connected to the blocking input of the protection function to be
blocked at faulty CT secondary circuits.
11.2 Fuse failure supervision FRWSPVC
GUID-05837FFD-AA6B-4C09-AE02-323BA78E948A v1
11.2.1 Identification
GUID-56A2FF28-197A-4AF4-91DF-331E9E323EB8 v1
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Fuse failure supervision FRWSPVC - -
11.2.2 Application
GUID-FAFE0EB7-9BD5-4779-A55D-F06F03175355 v2
Different protection functions within the protection IED, operates on the basis of
the measured voltage at the relay point. Examples are:
•
Impedance protection functions
• Undervoltage function
• Energizing check function and voltage check for the weak infeed logic
These functions can operate unintentionally if a fault occurs in the secondary
circuits between the voltage instrument transformers and the IED.
Section 11 1MRK 506 375-UEN A
Secondary system supervision
208 Railway application RER670 2.2 IEC
Application manual
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