Stator Earth Fault Protection For Generators By 20HZ Injection Method
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Stator Earth Fault Protection For Generators By 20HZ Injection Method
Specifications
| Output Current | 5A continuously |
|---|---|
| Alarm | PFC contact |
| Output Frequency | 20Hz +5% |
| Cooling | Passively Cooled |
Key Features
- Detectsstator earth faults when the generator is offline
- Low-cost unit with high performance
Product Details
Stator Earth Fault Protection For Generators By 20HZ Injection Method is based on a sub-harmonic injection principle. To implement a 100 % stator earth fault protection system a 20Hz current is injected into the generator star point. The 20Hz generator SGEN-1001 is used in combination with the Band Pass Filter SBPF-1001 in the Stator Earth fault protection. The injection can be performed by connecting the SGEN-1001 and the SBPF-1001 to the load resistor of an earthing or neutral transformer. If an earth fault occurs in the generator star point, the 20Hz current flows through the fault resistance. From the driving voltage and the fault current, the protective relay determines the fault resistance.
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