SWITCHING APPARATUS FOR FEEDING SYSTEM FOR OPTICAL CABLE

PURPOSE: To obtain a switching apparatus of feeding system for optical cable in which a high voltage hot-line can be switched accurately in safety in a short time through simple automatic operation requiring no manual operation. CONSTITUTION: When an output condition decision block B1 makes a decisi...

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Bibliographische Detailangaben
Hauptverfasser:	DOI MASAYASU, ASAOKA TOMOAKI, KOTANI SUMIO, SUDO FUJIO, SHIBANO EIICHI
Format:	Patent
Sprache:	eng
Schlagworte:	CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY TRANSMISSION
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Beschreibung
Zusammenfassung:	PURPOSE: To obtain a switching apparatus of feeding system for optical cable in which a high voltage hot-line can be switched accurately in safety in a short time through simple automatic operation requiring no manual operation. CONSTITUTION: When an output condition decision block B1 makes a decision that the differential voltage and current between respective output voltages and currents come within allowable ranges and detects a switching operation between power supply units 1A and 1B, a switching control block B3 temporarily turns all relay switches 181-184 ON to connect the power supply units 1A, 1B in parallel. Subsequently, the relay switch for a line to be connected is turned OFF and respective relay switches 181-184 are turned ON/OFF under a state where the potential across each relay switch is equalized thus eliminating discharge at the contact.