... , RS485 communication 4. CE, ISO Toky DW9L series 3 phase multi-function power meter:1) To measure: Voltage, Current, ... 2 times Instantaneous: 2 times/10SConsumption of voltage <1VA (each phase)Voltage imdepance ≥ 300K Ω Voltage accuracy RMS measure, accuracy class ... Instantaneous: 10 times/10SConsumption of current <0.4VA (each phase)Current imdepance <20mΩ Current accuracy RMS measure, accuracy class ...