Henan Defy Electronics Co., Ltd. [China]

DF-301 three-phase meter takes single chip as kernel, adopts three separate voltage channels and current channels, large graphic

DF-301 three-phase meter takes single chip as kernel, adopts three separate voltage channels and current channels, large graphics LCD, high-capacity lithium battery, widely used by thousands of customers by its excellent stability, reliability, accurately for long time. It was considered to be classical tester for phase and electric quality.

I. Features & Functions

   1. with seven functions: voltmeter, ammeter, phase meter, phase sequence meter, frequency counter, power meter, power factor meter.2. Display vector figures with six angles.3. High precision, can be used as leakage ammeter.4. Friendly man-machine interface.5. long lasting nickel-hydrogen, AC and DC power supply, convenient to field tests.6. Serial data interface, can connect with the micro printer and PC.7. With LCD(display the data and diagram), convenient to review.8. Auto switch the measurement range, soft ware calibrate.9. High accuracy clock, battery capacity display10. Full digital, high stability    

II. Specifications

1. Measurement Range(1) phase:0°~360°(2) voltage:5~500V(3) current:10mA~10A(4) frequency:45~65Hz(5) power factor:-1~+1(6) power:0~2.5KW

2. Intrinsic Error   (1) reference conditions

   (2) phase:±1°, resolution 0.1°.remark: current less than 20mA, relative error less < ±3°.voltage:0.5, resolution 0.01V.current:0.5, resolution 1mA.power factor:1%±2 characterpower:2.0

3. Input Impedance :1MΩ

   4. Working Conditions:

5. Additional Error(1) the additional error less than intrinsic error when the voltage , current valued under specified operating conditions during the phase measurement.(2)the additional error is less than intrinsic error, increased by the wire deviating of the center of the jaw during the current measurement.

6. Voltage withstand and insulation   voltage withstand:≥100MΩ   resolution:≥2KV/min, 50Hz sine wave7. Power supply   (1) internal battery: long lasting nickel-hydrogen battery, power consumption ≤6W, can use for 16 hours under backlight   (2) AC power supply: 85-265Vac, 0.8A, power≤8VA

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