Item Type: Electricity Meter Material: ABS Model: D52-2066 Usage: Used in chemical industry, power plants, automation equipment, DOS systems, electromechanical equipment, etc. Basic Parameter: Main Specifications: 1. Measurement Accuracy: 1% 2 words 2. Measuring Range: AC Voltage: AC 250-450V AC Current: AC 0-100.0A, the current display resolution is 0.01A Power Frequency: 45.0Hz-65.0Hz Power Factor: 0.00-1.00PF Active Power: 0-45000W, the display resolution between 0-9999.9W is 0.1W, the rest is 1W Electric Energy: 0-99999kwh, the minimum display resolution between 0-999.99kwh is 0.01kwh, between 1000.0-9999.9kwh is 0.1kwh, between 10000-99999kwh is 1kwh 3. Measurement Speed: About 2 times per second 4. Installation Method: Rail type How to Use: 1. Connect the measured voltage to the 1 and 2 terminals on the lower left of the meter. 2. Built in transformer wiring according to the wiring diagram in Figure 1: Pass the wire of the measurement loop through the round hole at the bottom of the instrument, user can choose the direction of the wire according to the situation, it can pass through the round hole at the bottom and come out from the top, or pass through on the top and come out from the bottom, different directions will not affect the measurement results. 3. External transformer wiring according to the wiring diagram in Figure 2: Connect the 2 wires of the secondary end of the transformer to the terminals 3 and 4 on the upper left of the instrument respectively, and pass the wires of the measurement loop through the round hole of the transformer. 4. After the power is turned on, the instrument displays the measurement parameters. 5. When it is necessary to reset the electric energy measurement, press and hold the RESET button on the right side of the instrument panel for 5 seconds, until the electric energy is displayed as 0, release the button, and the electric energy will be measured from 0. 6. The electric energy has the function of automatically saving the data when the power is cut off, when the measuring voltage is disconnected or the power is cut off, the meter will automatically save the current test data, and when the measuring power is reconnected, the meter will continue to accumulate the previously saved data. 7. The diameter of the built in transformer (CT) round hole is approx.11mm/0.4in, which can pass through the national standard 12mm2 standard copper wire, can meet the load current 100A through 8. The diameter of the external transformer (CT) hole is approx.15mm/0.6in, which can meet the national standard of 21-25mm2 standard copper wire.