Currently, THT has supplied a lot of GE brand protection relays into Vietnam's electrical system. All of them work stably and receive high performance reviews from the users.
* The line is responsible for transmitting electricity from the power plant to the place of consumption. Because the power plant is often away from the load, the lines are often very long and must go through a lot of terrain and operate in a lot of harsh conditions. This makes investment costs and maintenance costs of power transmission lines are often very large. Understanding the important role of transmission lines in electricity systems as well as customer needs, GE has introduced comprehensive solutions for transmission line protection:
- Diversified protection subjects: GE relays can protect multiple product lines that meet the protection requirements of different voltage levels on transmission lines.
- Multifunctional protection relay: In addition to the main protection functions such as 21, 87L; GE line protection relays also incorporate additional protection functions such as 25, 27/59, 50BF ...
- Accurately pinpoint fault locations on the line: With the new patented technology, protective relays can pinpoint fault locations on line, thus saving time on troubleshooting as well. such as minimizing the damage of the incident.
- Multi-relay relays: Integrating communications from the most popular to the most modern such as Modbus RTU / TCP-IP, IEC61850, ... GE relays can connect well with existing systems of factory.
- Works well with a variety of environmental conditions: With an IP54-rated body and standards for impact resistance, GE relays work well in a variety of difficult conditions smoothly. In addition, with the patented work environment monitoring system, GE relays show all necessary parameters of operating conditions and equipment conditions.
> In addition, when using GE products, customers also enjoy additional incentives:
+Designed, tested and fully assembled at GE facilities
+Guaranteed under GE's 10-year warranty
FUNCTION TABLE
| DEVICE NUMBER | FUNCTION | DEVICE NUMBER | FUNCTION |
| 21G | Ground Distance | 51P | Phase Time Overcurrent |
| 21P | Phase Distance | 51_2 | Negative Sequence Time Overcurrent |
| 24 | Synchronism Check | 52 | AC Circuit Breaker |
| 25 | Synchrocheck | 59N | Neutral Overvoltage |
| 27P | Phase Undervoltage | 59P | Phase Overvoltage |
| 27X | Auxiliary Undervoltage | 59X | Auxiliary Overvoltage |
| 32 | Sensitive Directional Power | 67_2 | Negative Sequence Directional Overcurrent |
| 49 | Thermal Overload | 67N | Neutral Directional Overcurrent |
| 50BF | Breaker Failure | 67P | Phase Directional Overcurrent |
| 50DD | Current Disturbance Detector | 68 | Power Swing Blocking |
| 50G | Ground Instantaneous Overcurrent | 78 | Out-of-Step Tripping |
| 50N | Neutral Instantaneous Overcurrent | 79 | Automatic Recloser |
| 50P | Phase Instantaneous Overcurrent | 81U/O | Under/Over Frequency, df/dt |
| 50_2 | Negative Sequence Instantaneous Overcurrent | 87L | Segregated Line Current Differential |
| 51G | Ground Time Overcurrent | 81ROCOF | Rate of Change of Frequency |
| 51N | Neutral Time Overcurrent | 87LG | Ground Line Current Differential |
- For more information about the product, please visit the link
https://www.gegridsolutions.com/multilin/catalog/transmission.htm
Or contact us directly to receive the most dedicated advice.
