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1. Introduction
GRZ100 is a fully numeric distance protection for application to transmission lines on solidly
earthed network.
The GRZ100 provides the following protection schemes.
- Time-stepped distance protection with four forward zones, three reverse zones, and one
non-directional zone
- Zone 1 extension protection
- Command protection (Distance protection using telecommunication)
- Overcurrent backup protection
- Thermal overload protection
- Switch-on-to-fault and stub protection
- Circuit breaker failure protection
- Broken conductor detection
- Out-of-step protection
- Overvoltage and undervoltage protection
For high-resistance earth faults, the GRZ100 provides the following directional earth fault
protections.
- Directional earth fault protection
- Directional earth fault protection utilizing telecommunications facilities
The GRZ100 actuates high-speed single-shot autoreclose or multi-shot autoreclose.
The GRZ100 provides the following metering and recording functions.
- Metering
- Fault record
- Event record
- Fault location
- Disturbance record
The GRZ100 provides the following menu-driven human interfaces for relay setting or viewing of
stored data.
- Relay front panel; LCD, LED display and operation keys
- Local PC
- Remote PC
Password protection is provided to change settings. Eight active setting groups are provided. This
allows the user to set one group for normal operating conditions while other groups may be set to
cover alternative operating conditions.
GRZ100 provides either two or three serial ports, and an IRIG-B port for an external clock
connection. A local PC can be connected via the RS232C port on the front panel of the relay.
Содержание GRZ100 B Series
Страница 264: ... 263 6 F 2 S 0 8 4 6 Appendix A Block Diagram ...
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Страница 272: ... 271 6 F 2 S 0 8 4 6 Appendix B Signal List ...
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Страница 308: ... 307 6 F 2 S 0 8 4 6 Appendix C Variable Timer List ...
Страница 310: ... 309 6 F 2 S 0 8 4 6 Appendix D Binary Input Output Default Setting List ...
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Страница 322: ... 321 6 F 2 S 0 8 4 6 Appendix E Details of Relay Menu and LCD Button Operation ...
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Страница 340: ... 339 6 F 2 S 0 8 4 6 Appendix G Typical External Connections ...
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Страница 384: ... 383 6 F 2 S 0 8 4 6 Appendix J Return Repair Form ...
Страница 388: ... 387 6 F 2 S 0 8 4 6 Customer Name Company Name Address Telephone No Facsimile No Signature ...
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Страница 390: ... 389 6 F 2 S 0 8 4 6 Appendix K Technical Data ...
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Страница 402: ... 401 6 F 2 S 0 8 4 6 Appendix L Symbols Used in Scheme Logic ...
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Страница 406: ... 405 6 F 2 S 0 8 4 6 Appendix M Example of Setting Calculation ...
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Страница 418: ... 417 6 F 2 S 0 8 4 6 Appendix N IEC60870 5 103 Interoperability and Troubleshooting ...
Страница 430: ... 429 6 F 2 S 0 8 4 6 Appendix O Programmable Reset Characteristics and Implementation of Thermal Model to IEC60255 8 ...
Страница 434: ... 433 6 F 2 S 0 8 4 6 Appendix P Inverse Time Characteristics ...
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Страница 438: ... 437 6 F 2 S 0 8 4 6 Appendix Q Failed Module Tracing and Replacement ...
Страница 444: ... 443 6 F 2 S 0 8 4 6 Appendix R Ordering ...
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