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此种继电器,具有隔爆外壳,用于含有爆炸性气体(甲烷族)或煤尘爆炸危险的煤矿中及其他工业中。在电压和交流660伏三相三线制电网中(中性点不接地供电系统),用以防止因漏电而造成的人身触电或使易燃物燃烧,引起雷管爆发和防止瓦斯、煤尘爆炸等方面具有显著作用,是保证安全采煤的一种极重要的保护装置。JL80—660型防爆检漏继电器,由于采用
Such relays, with flameproof enclosures, are used in coal mines and other industries that contain explosive gas (methane) or coal dust explosions. In the voltage and AC 660-volt three-phase three-wire system (neutral ungrounded power supply system), to prevent leakage caused by personal electric shock or burning of combustibles, causing detonator explosion and prevent gas, coal dust explosion, etc. Has a significant role in ensuring safe coal mining is an extremely important protection device. JL80-660 explosion-proof leak detector, due to adoption