⎯
229
⎯
6 F 2 S 0 8 4 6
•
Apply three-phase rated voltage.
•
Choose a test current IT by referring to the table below, the table shows the relationship
between the reach setting, test current and measuring error.
Reach setting
IT
Error
0.01 - 0.05
Ω
(0.1 - 0.2
Ω
25A
5A)(*)
±
10%
0.06 - 0.09
Ω
(0.3 - 0.4
Ω
20A
4A)
±
7%
0.10 - 1.00
Ω
(0.5 - 5.0
Ω
10A
2A)
±
5%
1.01 - 10.00
Ω
(5.1 - 50.0
Ω
5A
1A)
±
5%
10.01 - 20.00
Ω
(50.1 – 100.0
Ω
2.5A
0.5A)
±
5%
20.01 - 50.00
Ω
(100.1 – 250.0
Ω
1A
0.2A)
±
7%
(*) Values shown in parentheses are in the case of 1A rating.
Other values are in the case of 5A rating.
•
Set the voltage and current phase relationship as shown below. That is, Va lags Vc by 90°, Vb
= - Va and IT lags Va by
θ
or
θ
+ 180°.
θ
is the characteristic angle (90°) when testing.
IT
θ
90
°
Vb
Vc
Va
Z1S, Z1XS, Z2S, ZFS, ZNDS, Z3S and PSB
θ
+ 180
°
IT
Vb
Va
Vc
ZR1S,ZR2S and Z4S
•
Adjust the magnitude of Va and Vb while retaining the conditions above and measure the
voltage Va at which the element operates.
•
The theoretical operating voltage is obtained by 2IT
×
ZS when the setting reach is ZS. Check
that the measured voltage is within the above-mentioned error of the theoretical voltage value
when it is expressed with 2Va (= Va
−
Vb).
Element reach setting (ZS)
IT
2IT
×
ZS
Measured voltage (2V
a
)
Z1S
Z1XS
Z2S
Z3S
Z4S
Summary of Contents for GRZ100 B Series
Page 264: ... 263 6 F 2 S 0 8 4 6 Appendix A Block Diagram ...
Page 271: ... 270 6 F 2 S 0 8 4 6 ...
Page 272: ... 271 6 F 2 S 0 8 4 6 Appendix B Signal List ...
Page 307: ... 306 6 F 2 S 0 8 4 6 ...
Page 308: ... 307 6 F 2 S 0 8 4 6 Appendix C Variable Timer List ...
Page 310: ... 309 6 F 2 S 0 8 4 6 Appendix D Binary Input Output Default Setting List ...
Page 321: ... 320 6 F 2 S 0 8 4 6 ...
Page 322: ... 321 6 F 2 S 0 8 4 6 Appendix E Details of Relay Menu and LCD Button Operation ...
Page 331: ... 330 6 F 2 S 0 8 4 6 ...
Page 340: ... 339 6 F 2 S 0 8 4 6 Appendix G Typical External Connections ...
Page 377: ... 376 6 F 2 S 0 8 4 6 ...
Page 384: ... 383 6 F 2 S 0 8 4 6 Appendix J Return Repair Form ...
Page 388: ... 387 6 F 2 S 0 8 4 6 Customer Name Company Name Address Telephone No Facsimile No Signature ...
Page 389: ... 388 6 F 2 S 0 8 4 6 ...
Page 390: ... 389 6 F 2 S 0 8 4 6 Appendix K Technical Data ...
Page 401: ... 400 6 F 2 S 0 8 4 6 ...
Page 402: ... 401 6 F 2 S 0 8 4 6 Appendix L Symbols Used in Scheme Logic ...
Page 405: ... 404 6 F 2 S 0 8 4 6 ...
Page 406: ... 405 6 F 2 S 0 8 4 6 Appendix M Example of Setting Calculation ...
Page 417: ... 416 6 F 2 S 0 8 4 6 ...
Page 418: ... 417 6 F 2 S 0 8 4 6 Appendix N IEC60870 5 103 Interoperability and Troubleshooting ...
Page 434: ... 433 6 F 2 S 0 8 4 6 Appendix P Inverse Time Characteristics ...
Page 437: ... 436 6 F 2 S 0 8 4 6 ...
Page 438: ... 437 6 F 2 S 0 8 4 6 Appendix Q Failed Module Tracing and Replacement ...
Page 444: ... 443 6 F 2 S 0 8 4 6 Appendix R Ordering ...
Page 447: ......