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Overload protection for electrical measurement arrangement - using low-cost switch-off relay with manual reset, bistable relay, amplifier and delay circuits
Overload protection for electrical measurement arrangement - using low-cost switch-off relay with manual reset, bistable relay, amplifier and delay circuits
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机译:电气测量装置的过载保护-使用带手动复位功能的低成本关断继电器,双稳态继电器,放大器和延迟电路
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摘要
The overload protection arrangement contains a switch-off relay (8) with manual reset, an activation circuit connected to an electrical measurement arrangement's measurement unit (1) via a delay circuit (6) and amolifier (7) and an off contact (9) in series with the measurement unit. The switching relay is a switch protector with additional working contact (10). The manual reset is coupled with a switch (17) which opens the off contact. A bistable relay (12) with an off contact parallel to the off and switch contacts is activated when the additional contact opens. USE/ADVANTAGE - Electrical measurement arrangement overload protection devices uses economical switch-off relay.
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