The utility model discloses a grounding wire electrification control device for a regenerative electric water heater. The utility model relates to a live wire electrification control technique for a regenerative electric water heater. The utility model comprises a zero earth wire potential difference detection device and a flow switch signal input circuit. The utility model is characterized in that the zero earth wire potential difference detecting device is indirectly connected with the ground wire and the zero line, and the potential difference detection device is composed of a step-down circuit, a rectification circuit and an operational amplifier circuit, and is provided with a voltage stabilizing circuit and a voltage dividing circuit. The step-down circuit is a step-down mode of the transformer. The input port of a zero ground potential difference detection device of the output signal and the flow switch signal with MCU is connected with the output end of the SCM is connected through a switch tube and a relay control coil, the normally closed contact of the relay control wire and wire switching. The utility model relates to an earth wire electrified control technique, which aims at automatically and rapidly cutting off the power supply when the regenerative electric water heater is used and the grounding wire and the basic insulation are not at the same time, and thus the personal safety is protected.
【技术实现步骤摘要】
【技术保护点】
一种蓄热式电热水器防地线带电控制装置，包括零地线电位差检测装置和流量开关信号输入电路；其特征是在地线和零线间接有零地线电位差检测装置。
【技术特征摘要】
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