General description: The digital single-phase energy meter for AC is designed to accurately measure power consumption in various environments, such as the chemical industry, power plants, and automation systems. It features a color LCD screen with a wide viewing angle of 178°, allowing for easy data reading. This compact and lightweight unit is robust and durable, perfect for daily use. Technical specifications: Model: D52-2066; Material: ABS; AC voltage measurement range: 40.0–300.0 V; AC current measurement range: 0–100.0 A; Measurement accuracy: 1% ± 2 ms; Supply frequency: 45.0 Hz - 65.0 Hz; Power factor: 0.00 - 1.00 PF; Active power measurement range: 0–30000 W; Power display resolution: 0.1 W (0–9999.9 W). 1 W (above) Energy measurement range: 0–9999 kWh. 0–999.99 kWh (0.01 kWh). 1000.0-9999.9 kWh (0.1 kWh). 10000-9999 kWh (1 kWh) Measurement speed: approximately 2 times per second. Diameter of integrated transformer hole: 11 mm. Diameter of external transformer hole: 15 mm. Installation: Connect the measured voltage to terminals 1 and 2 at the bottom left of the meter. The integrated transformer must be connected according to the included wiring diagram. The measuring loop cable can be routed through the hole under the meter or through the circular hole at the top. Connect the external transformer according to the appropriate wiring diagram. Function: After power-on, the unit displays the measurement parameters. To reset the energy measurement, press and hold the RESET button for 5 seconds. The unit automatically saves data when power is turned off and continues to accumulate previously saved data upon reconnection.