...In addition to electromagnetic types, there are many types of protective relays for power that apply the principles of electrical meters, such as induction types, electrodynamometer types, and moving coil types. Other types of relays based on the principles they use include thermal relays that use a bimetal to convert temperature changes into mechanical displacement, thermal relays that detect temperature changes using a thermistor, photoelectric relays that incorporate a light-sensitive element, and piezoelectric relays that create displacement through piezoelectric or electrodielectric phenomena. A slightly unusual type is the vibrating reed relay. ... *Some of the terminology that refers to "piezoelectric relay" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…電力用の保護継電器には電磁形以外に誘導形,電流力計形,可動コイル形など,電気計器の原理を応用したものが多い。利用する原理別にその他のリレーの種類をあげると,バイメタルによって温度変化を機械的変位に変えたり,サーミスターによって温度変化を検出する熱リレー,感光素子を組み入れた光電リレー,圧電または電わい現象によって変位を作る圧電気リレーなどがある。やや変わったものにバイブレーティングリードリレーvibrating reed relayがある。… ※「圧電気リレー」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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