6 F 2 T 0 1 7 2
6. Commissioning and Maintenance
6.1 Outline of Commissioning Tests
GRE110 is fully numerical and the hardware is continuously monitored.
Commissioning tests can be kept to a minimum and need only include hardware tests and
conjunctive tests. The function tests are at the user’s discretion.
In these tests, user interfaces on the front panel of the relay or local PC can be fully applied.
Test personnel must be familiar with general relay testing practices and safety precautions to avoid
personal injuries or equipment damage.
Hardware tests
These tests are performed for the following hardware to ensure that there is no hardware defect.
Defects of hardware circuits other than the following can be detected by monitoring which circuits
function when the power is supplied.
User interfaces
Binary input circuits and output circuits
AC input circuits
Function tests
These tests are performed for the following functions that are fully software-based.
Measuring elements
Metering and recording
Conjunctive tests
The tests are performed after the relay is connected with the primary equipment and other external
equipment.
The following tests are included:
On load test: phase sequence check and polarity check
Tripping circuit test
6.2 Cautions
6.2.1 Safety Precautions
CAUTION
•
When connecting the cable to the back of the relay, firmly fix it to the terminal block and attach
the cover provided on top of it.
•
Before remove the terminal block or cable of the relay, be sure to turn off the power.
Failure to observe any of the precautions above may cause electric shock or malfunction.
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Summary of Contents for GRE110
Page 183: ...6 F 2 T 0 1 7 2 Appendix B Signal List 184 ...
Page 191: ...6 F 2 T 0 1 7 2 Appendix C Event Record Items 192 ...
Page 196: ...6 F 2 T 0 1 7 2 Appendix D Binary Output Default Setting List 197 ...
Page 199: ...6 F 2 T 0 1 7 2 Appendix E Relay Menu Tree 200 ...
Page 210: ...6 F 2 T 0 1 7 2 Appendix F Case Outline 211 ...
Page 211: ...6 F 2 T 0 1 7 2 Case Outline for model 400 401 420 421 820 and 821 212 ...
Page 212: ...6 F 2 T 0 1 7 2 Case Outline for model 402 and 422 213 ...
Page 213: ...6 F 2 T 0 1 7 2 Appendix G Typical External Connection 214 ...
Page 245: ...6 F 2 T 0 1 7 2 Appendix J Return Repair Form 246 ...
Page 249: ...6 F 2 T 0 1 7 2 Customer Name Company Name Address Telephone No Facsimile No Signature 250 ...
Page 250: ...6 F 2 T 0 1 7 2 Appendix K Technical Data 251 ...
Page 256: ...6 F 2 T 0 1 7 2 Appendix L Symbols Used in Scheme Logic 257 ...
Page 259: ...6 F 2 T 0 1 7 2 Appendix M Modbus Interoperability 260 ...
Page 289: ...6 F 2 T 0 1 7 2 Appendix N IEC60870 5 103 Interoperability 290 ...
Page 296: ...6 F 2 T 0 1 7 2 Appendix O PLC Default setting 297 ...
Page 298: ...6 F 2 T 0 1 7 2 Appendix P Inverse Time Characteristics 299 ...
Page 304: ...6 F 2 T 0 1 7 2 Appendix Q IEC61850 Interoperability 305 ...