SEPARATOR INCORPORATING SPD
To provide a separator incorporating SPD which has an excellent operation accuracy and high reliability.SOLUTION: The separator incorporating SPD has a series circuit including a striker incorporating current fuse 20 serving as an overcurrent separator, a conductor 30 serving as a thermal separator...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | To provide a separator incorporating SPD which has an excellent operation accuracy and high reliability.SOLUTION: The separator incorporating SPD has a series circuit including a striker incorporating current fuse 20 serving as an overcurrent separator, a conductor 30 serving as a thermal separator which is separated during overheating of a varistor 40, and the varistor 40, and detects a failure on the basis of a mechanical operation of the overcurrent separator or thermal separator. The separator incorporating SPD includes a first slider 23 that, when struck by an outward protruding striker 22, moves in a certain direction against a restoring force of a first spring 29, an alarm contact output microswitch 53 that is turned on by movement of the slider 23, a motion displaying display section 55 that moves when released from locking with the slider 23 by movement of the slider 23, and a second slider 31 that moves the first slider 23 with a restoring force of a second spring 32 when released from locking with the conductor 30 at the separation time of the conductor 30.SELECTED DRAWING: Figure 1
【課題】動作精度に優れた信頼性の高い分離器内蔵型SPDを提供する。【解決手段】過電流分離器としてのストライカー内蔵形の電流ヒューズ20と、バリスタ40の過熱時に分離する熱分離器としての導体30と、バリスタ40と、からなる直列回路を備え、過電流分離器または熱分離器の機械的動作に基づいて故障を検出する分離器内蔵型SPDにおいて、外部に突出したストライカー22により打撃されて第1のばね29の復元力に抗しながら一定方向に移動する第1のスライダー23と、スライダー23の移動によりオンされる警報接点出力用のマイクロスイッチ53と、スライダー23の移動によりスライダー23との係止が解除されて移動する動作表示用の表示部55と、導体30の分離時に導体30との係止が解除されて第2のばね32の復元力により第1のスライダー23を移動させる第2のスライダー31と、を備える。【選択図】図1 |
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