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PRODUCT INTRODUCTION
MEWOI7900 Flexible High Current Clamp Meter is carefully designed and manufactured for field testing of AC large current. Widely used in electric power, communications, meteorology, railways, oil fields, construction, measurement, scientific research and teaching units, industrial and mining enterprises and other fields. It is especially suitable for places with dense wiring, transformer core current testing against the wall, thick wire cable testing, relay protection, thyristor rectification, frequency conversion speed regulation, semiconductor switches, power electronic conversion equipment, arc welding, etc., where the signal is seriously distorted. Current testing in industrial environments. The flexible current clamp, namely Rogowski Coil (Rockowski Coil), adopts advanced Rockwell Coil (or Rogowski Coil) technology, which is a circular coil wound evenly on non-ferromagnetic material, without hysteresis effect and almost zero phase Error, no magnetic saturation phenomenon, high linearity, strong anti-interference ability. The output signal is the differential of the current with respect to time. By integrating the output voltage signal, the input current can be truly restored. The measured current range can range from milliamps to tens of thousands of amperes. The coil part of the flexible current clamp does not have any exposed metal conductors, non-contact measurement, safe and fast; it is small in size, light in weight, beautiful in appearance, soft and flexible, suitable for narrow environments and places with dense wiring; high measurement accuracy, strong reliability, The response frequency is wide, and users can customize the coil length according to their needs. The meter also has the functions of peak hold, data hold, data storage, etc. It is easy to use and is an essential tool for electrician safety testing. |
Technical parameter
1. Range and accuracy
| Measurement function | Range | precision |
| Current AC | 0.00A～9999A | ±2% rdg ±3dgt |
Note: The wire is in the center of the flexible coil, 23°C±2°C
2. Other parameters
| Function | AC high current |
| power supply | Zinc-manganese dry battery 6F22 9V |
| test method | Flexible CT: The output signal is the differential of current versus time. By integrating the output voltage signal, the Can truly restore the input current. |
| Coil inner diameter | Inner diameter Φ200mm |
| resolution | AC 10mA |
| coil length | Length 628mm |
| Coil Thickness | Φ7.5mm (very suitable for narrow environments and places with dense wiring, etc.) |
| Measured current frequency | 50Hz/60Hz (automatic identification) |
| Meter size | Width, height and thickness 190mm×370mm×40mm |
| LCD size | 35mm×21.5mm; display area: 32mm×15mm |
| back light | With backlight, easy to use in dark field |
| quality | 200g (including battery); |
| Electric field interference | No hysteresis effect, strong anti-interference ability |
| position error | The wire to be tested should be located in the center of the flexible coil as much as possible, not close to the opening and closing. The trial error is approximately doubled or more. |
| sampling rate | 2 times/second |
| data storage | 99 groups, flashing "FULL" symbol means the storage is full |
| peak hold | Peak capture and hold function, press and hold POWER during the test to display the peak " |
| data retention | Data hold function: "DH" symbol display |
| line voltage | Line test below AC600V |
| overflow display | Over-range overflow function: "OL" symbol display |
| battery voltage | When the battery voltage drops to about 7.2V, the low battery voltage symbol will be displayed to remind you to replace the battery. |
| rated current | About 8mA |
| Working temperature and humidity | -10℃～40℃; below 80%rh |
| storage temperature and humidity | -10℃～60℃; below 70%rh |
| Insulation resistance | 100MΩ or more, 1000V |
| Suitable for safety regulations | IEC1010-1, IEC1010-2-032, pollution degree 2, CAT VI (1000V) IEC6132 6 (EMC standard) |
