400A AC 50Hz Digital Clamp Multimeter Automatic Measurement
3.1 Overview
- Automatic measurement and manual measurement
- Overload protection¥The maximum voltage allowed between the
measuring terminal and earth:600V DC or 600V AC
- Display:LCD
- Maximum:1999 display
- Polar indication:Automatic indicator,‘-’,Display negative
- Over range display:‘0L’ or ‘-0L’.
- Sampling time: about 3 times / sec
- Display unit and power display
- Automatic power off:15Minutes
- Open Jaw is 25mm; test Line OD less than23mm
- Battery type:1.5V AAA
- Battery voltage indication:LCD Symbol
- Temperature coefficient:less 0.1
- operating temperature:18℃ ～ 28℃
- Storage temperature:-10℃ ～ 50℃
- Size:184.0×66.0×32.5mm
- Weight:about 190g(Including battery)
3.2 Technical indicators
Environment temperature:23±5℃ Relative humidity:<75%
3.2.1 AC Current
| Range | Resolution | Accuracy |
| 2A | 0.001A | ±(4.0% + 20) |
| 20A | 0.01A | ±(2.5% + 8) |
| 200A | 0.1A |
| 400A | 1.0A |
- Max input:400A AC
- Frequency:50Hz
- When ac current is measured, the meter automatically opens an
internal low-pass filter to filter out high-frequency current.
3.2.2 DC voltage
| Range | Resolution | Accuracy |
| 2V | 0.001V | ±(0.8% + 5) |
| 20V | 0.01V |
| 200V | 0.1V | |
| 600V | 0.1V | ±(1.0% + 5) |
- Input impedance:10MW
- Maximum/ input voltage:600V AC (Effective value)OR 600V DC
3.2.4 AC voltage
| Range | Resolution | Accuracy |
| 2V | 0.001V | ±(1.2% + 5) |
| 20V | 0.01V |
| 200V | 0.1V |
| 600V | 0.1V | ±(1.5% + 5) |
- Input impedance:10MW
- Maximum/ input voltage:600V AC (Effective value)or 600V DC
In the small voltage range, the meter pen is not connected to the
measured circuit, the meter may have jumping reading, this is
normal, because of the high sensitivity of the meter, does not
affect the actual measurement results
3.2.5 Frequency (Voltage frequency measurement)
| Range | Resolution | Accuracy |
| 9.999Hz | 0.001Hz |
±(0.3% + 5)
|
| 99.99Hz | 0.01Hz |
| 999.9Hz | 0.1Hz |
| 9.999kHz | 0.001kHz |
| 99.99KHZ | 0.01kHZ |
- Overload protection:600V DC or AC(Effective value)
3.2.6 Resistance
| Range | Resolution | Accuracy |
| 200W | 0.1W | ±(0.8% + 3) |
| 2kW | 0.001kW |
| 20kW | 0.01kW |
| 200kW | 0.1kW |
| 2MW | 0.001MW | ±(1.2% + 3) |
| 20MW | 0.1MW |
- open-circuit voltage:About 0.4V
- Overload protection:600V DC or AC(Effective value)
3.2.7 Continuity test
| Range | Resolution | Function |
| 0. 1W | If the measured line resistance is less than 50, enclosing the
instrument may sound a buzzer |
- Overload protection:600V DC or AC(Effective value)
3.2.8 Capacitance
| Range | Resolution | Accuracy |
| 9.999nF | 0.001nF | |
| 99.99nF | 0.01nF |
| 999.9nF | 0.1nF |
| 9.999mF | 0.001mF | |
| 99.99mF | 0.01mF | ±(3.0% + 5) |
| 999.9mF | 0.1mF | |
| 9.999mF | 0.001mF | ±(5.0% + 5) |
| 99.99mF | 0.01mF | Not define |
- Overload protection:250V DC or AC(Effective value)
