Broken Conductor Check Brcptoc (46) - ABB REC670 Applications Manual

Section 8
Current protection
8.14
8.14.1
226
(
S TD S 1 TD S
= ⋅ + −
Old
EQUATION1893-ANSI V1 EN-US
Where
S is a new measured value to be used for the protection function
S is the measured value given from the function in previous execution cycle
old
S is the new calculated value in the present execution cycle
Calculated
TD is settable parameter
The value of TD=0.92 is recommended in generator applications as the trip delay is
normally quite long.
The calibration factors for current and voltage measurement errors are set % of rated
current/voltage:
IMagComp5, IMagComp30, IMagComp100
VMagComp5, VMagComp30, VMagComp100
IAngComp5, IAngComp30, IAngComp100
The angle compensation is given as difference between current and voltage angle
errors.
The values are given for operating points 5, 30 and 100% of rated current/voltage. The
values should be available from instrument transformer test protocols.

Broken conductor check BRCPTOC (46)

Identification
Function description
Broken conductor check
)
⋅
Calculated
IEC 61850
identification
BRCPTOC
1MRK 511 401-UUS A
IEC 60617 ANSI/IEEE C37.2
identification device number
- 46
Bay control REC670 2.2 ANSI
Application manual
(Equation 88)
SEMOD171761-1 v3
SEMOD172362-2 v2