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General| Frequency | 50/60 Hz |
|---|---|
| Current Rating | 5 A |
| Reset | Automatic/Manual |
| Mounting | Panel mount |
| Communication | Modbus |
| Standards | IEC 60255 |
| Operating Temperature | -20°C to +55°C |
Overview of the guide's purpose and scope, covering relay selection for generator protection.
Lists various protection functions and applications discussed within the document.
Explains how fault position impacts current and protection sensitivity, with examples.
Details protection schemes for low-impedance, medium-impedance, and high-resistance grounded generators.
Discusses using neutral voltage shift (59N) and third harmonic voltage (27-3N) for ground fault detection.
Details the use of 51 relays for phase fault detection and coordination with external relays.
Explains 51VR and 51VC relays for phase fault protection, their characteristics and coordination.
Covers 87G differential relay for generator protection, including unit differential.
Protection against motoring and loss of excitation using 32 and 40 relays.
Covers thermal protection (49) and overexcitation/voltage issues (24, 27, 59).
Discusses off-frequency (81) and inadvertent energization (50/27/81) protection.
Addresses negative sequence (46/47) and out-of-step (78) protection for system unbalance and swings.
Covers synchronism checking (25) and auto-synchronizing (25A) for safe generator connection.
Provides practical examples of protection schemes for different generator types.
Illustrates the application of numerical relays like BE1-GPS100 and BE1-CDS220 for generator protection.
Contains bibliography and tables for typical settings and relay application.
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