Toshiba GRZ100 Manual page 13

GRZ100
Earth Fault Distance Measuring Element
Z1G, Z2G and Z1XG
θ
Z1G 1
θ
Z1G 2
ZR1G
ZFG, Z3G, ZR2G and Z4G
Characteristic angle
ZNDG
Blinder (BFRG1, BFRG2, BFRG3, BRRG, BNDG)
BRLG: Linked with BRRG
Characteristic angle (BFRG1, BFRG2, BFRG3, BRRG, BNDG)
Characteristic angle (BFLG)
Time Setting for Zone Protection
Time setting of Z1S, Z2S, Z3S, ZFS, ZR1S, ZR2S,
ZNDS, Z1G, Z2G, Z3G, ZFG, ZR1G, ZR2G, ZNDG
Command Protection
Coordination time for BOP scheme
Operating and Resetting Time of Distance Measuring Element
Typical operating time
Operating time curve (SIR curve)
Resetting time for tripping output
Accuracy of Distance Measuring Element
Static accuracy
Static angle accuracy
Transient overreach
Minimum Operating Current
Current
Residual Current Compensation
Residual current compensation for reactance element of
Z1G, Z1XG, Z2G, ZFG, ZR1G
Earth return compensation
Mutual coupling compensation (ZR1G excluded)
Phase Selection Element
Undervoltage
Impedance
Characteristic angle
Residual current compensation
Switch-on-to-fault and Stub protection
Overcurrent
Broken Conductor Detection
Broken conductor threshold (I
DTL delay:
/I ):
2 1
0.10 to 250.00Ω in 0.01Ω steps (1A relay)
0.01 to 50.00Ω in 0.01Ω steps (5A relay)
0° to 45° in 1° steps
45° to 90° in 1° steps
0.1 to 250.0Ω in 0.1Ω steps (1A relay)
0.01 to 50.00 in 0.01Ω steps (5A relay)
0.1 to 500.0Ω in 0.1Ω steps (1A relay)
0.01 to 100.00 in 0.01Ω steps (5A relay)
45° to 90° in 1° steps
0.1 to 500.0Ω in 0.1Ω steps (1A relay)
0.01 to 100.00 in 0.01Ω steps (5A relay)
0.5 to 100.0Ω in 0.1Ω steps (1A relay)
0.10 to 20.00Ω in 0.01Ω steps (5A relay)
75° fixed
90° to 135°
0.00 to 10.00s in 0.01s steps
0 to 50ms in 1ms steps
20ms
Refer to Figure 13.
Typical 30ms (Adjustable by PLC function)
±5% under SIR < 30, ±10% under 30 < SIR < 50
±5°
+5%
0.08A (1A relay)
0.4A (5A relay)
Adjustable as follows:
0 to 1000% in 1% steps
0 to 1000% in 1% steps
10 to 60V in 1V steps
0.0 to 250.0Ω in 0.1Ω steps (1A relay)
0.0 to 50.0Ω in 0.1Ω steps (5A relay)
45° to 90° in 1° steps
Automatically set according to residual current
compensation setting of reactance element
0.4 to 3.0A in 0.1A steps (1A relay)
2.0 to 15.0A in 0.1A steps (5A relay)
OFF, 0.10 to 1.00 in 0.01 steps
0.00 to 300.00s in 0.01s steps
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