protective relay वाक्य
उदाहरण वाक्य
मोबाइल
- Fiber-optic sensors are used in electrical switchgear to transmit light from an electrical arc flash to a digital protective relay to enable fast tripping of a breaker to reduce the energy in the arc blast.
- Since these effects can be detected physically with sequence filters, the mathematical tool became the basis for the design of protective relays, which used negative-sequence voltages and currents as a reliable indicator of fault conditions.
- It was later determined that the fault disturbance caused by the line falling was not of significant magnitude to trip the protective relay per design and should not have caused unit 2 to shut down.
- A "'capacitor voltage transformer "'( CVT or CCVT ), is a transformer used in power systems to step down extra high voltage signals and provide a low voltage signal, for metering or operating a protective relay.
- Because the squirrel cage winding is not large enough to dissipate the heat of continuous operation, large synchronous machines often have protective relays to detect when the machine has fallen out of synchronization with the supply voltage.
- Relays with calibrated operating characteristics and sometimes multiple operating coils are used to protect electrical circuits from overload or faults; in modern electric power systems these functions are performed by digital instruments still called " protective relays ".
- Transmission lines also have other devices in series which can heat up and fail, such as current transformers which are connected to monitoring equipment and to protective relays, and wavetraps, which isolate radio frequency control signals passing along the transmission lines.
- In many electrical substation SCADA applications, " distributed RTUs " use information processors or station computers to communicate with digital protective relays, PACs, and other devices for I / O, and communicate with the SCADA master in lieu of a traditional RTU.
- In many electrical substation SCADA applications, " distributed RTUs " use information processors or station computers to communicate with digital protective relays, PACS, and other devices for I / O, and communicate with the SCADA master in lieu of a traditional RTU.
- With a utility transformer, there is quite a bump when the voltage is applied, with the mechanical shock to thr transformer causing dust to fly off, and sometimes causing protective relays to trip because the harmonics or inrush current seem like there is a fault, with normal voltage applied.
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