Toshiba GRL100-701B Instruction Manual page 76

Setting
The setting elements necessary for the PSB and their setting ranges are as shown in the table
below.
Element Range
PSBSZ
0.50 - 15.00Ω
( 2.5 - 75.0Ω
PSBGZ
0.50 - 15.00Ω
( 2.5 - 75.0Ω
EFL 0.5 - 5.0 A
( 0.10 - 1.00 A
TPSB 20 - 60
PSB-Z1 OFF/ON
PSB-Z2 OFF/ON
PSB-Z3 OFF/ON
PSB-CR OFF/ON
PSB-ZR OFF/ON
(*) Values shown in the parentheses are in the case of 1A rating. Other values are in the case of 5A
rating.
Residual overcurrent element EFL is used in common with the following functions.
• VT failure detection
• Earth fault distance protection
The PSBIN reach is set automatically to coordinate with the Z3 and Z4 settings.
Note: In the case of the quadrilateral characteristic, if the ZR reach is larger than the Z4, the PEB-IN
reach depends on the ZR reach. Therefore, the ZR must be set less than the Z4 whether the ZR
used or not.
The right side forward and reverse blinders for PSBIN are shared with the right side forward and
reverse blinders of the distance protection characteristic, BFRS/BFRG and BRRS/BRRG
respectively, ensuring that the PSB element coordinates properly with the protection, for both mho
and quadrilateral characteristics.
The positive reactive reach setting is fixed so that the setting makes the reactance element
tangential to the Z3 distance element when the Z3 is mho-based or takes the same value as the Z3
reactive reach setting when the Z3 is quadrilateral-based.
The negative resistive reach takes the same value as that of the positive reach. The negative
reactive reach setting is fixed so that the setting makes the reactance element tangential to the Z4
distance element when the Z4 is mho-based or takes the same value as the Z4 reactive reach setting
when the Z4 is quadrilateral-based.
PSBOUT encloses PSBIN and the margin between the two is determined by the user-settable
power swing detection zone width, PSBSZ and PSBGZ, for phase and earth fault characteristics
respectively.
Step Default Remarks
PSBS detection zone
0.01Ω 2.00Ω
0.1Ω 10.0Ω) (*)
PSBG detection zone
0.01Ω 2.00Ω
0.1Ω 10.0Ω) (*)
0.1 A 1.0 A Residual overcurrent
0.01 A 0.20 A)
1 ms 40 ms Power swing timer
ON Z1 blocked under power swing
ON Z2 blocked under power swing
OFF Z3 blocked under power swing
ON Carrier trip blocked under power swing
OFF ZR blocked under power swing
 75 
6 F 2 S 0 8 5 0