MAC-51 Series Current Coils|SeeweTek | Magnetic Field Generators, Magnetic Testing Solutions, Physical Property Testing Solutions

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MAC-51 Series Current Coils
Description:The MAC-51 series is a range of current coils designed and manufactured using the equivalent ampere-turn principle. They can be used with AC/DC reference standards to calibrate clamp meters with accuracy class 1 or lower. Suitable for provincial and municipal metrology laboratories, research institutes, universities, and enterprises for the calibration of current measuring instruments.
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Product Features

  • Equivalent current output: 1000 A / 2000 A, two options available;
  • Maximum current input: 22 Arms / 44 Arms, two options available;
  • Coil ampere-turn specification: 50 turns on the center current column, 25 turns on each side column;
  • DC measurement uncertainty (k=2): 0.3%;
  • AC measurement uncertainty (k=2): 0.3% @ 50Hz, 0.5% @ 400Hz;
  • Operating frequency: DC, 45~400 Hz;
  • Highly customizable.

Technical Specifications

The following are standard current coil parameters. All parameters can be customized according to user requirements.
ModelNumber of TurnsMax Input CurrentContinuous Operation TimeOperating Frequency RangeMeasurement Uncertainty (k=2)
MAC-5100-50-20Center 50 turns, sides 25 turns22 Arms<11 A: Continuous; >11 A: ≤ 30 minutesDC, 45 Hz~400 HzDC: 0.3%; AC: 0.3% @ 50 Hz, 0.5% @ 400 Hz
MAC-5100-50-4044 Arms<22 A: Continuous; >22 A: ≤ 30 minutes
Operating environment requirements: Operating temperature: 13°C ~ 33°C, storage temperature: -30°C ~ 70°C; Operating humidity: 30%R·H ~ 80%R·H, non-condensing; storage humidity: 10%R·H ~ 90%R·H, non-condensing.
Note: During calibration, the jaw of the clamp meter under test should be placed at the center of the current coil column; otherwise, additional measurement errors may occur.


Basic Structure