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Nieaf Instruments NI 31 Manual

Stroomtang / current clamp
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Stroomtang / Current Clamp NI 31
Handleiding / Manual

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Summary of Contents for Nieaf Instruments NI 31

  • Page 1 Stroomtang / Current Clamp NI 31 Handleiding / Manual...
  • Page 2 INTRODUCTION 1-1 Unpacking and Inspection Upon removing your new current transducer from it's packing , you should have the following items: 1. Current Transducer with coiled cable out put plugs. 2. Instruction manual. 3. Carrying Case.
  • Page 3 Figure 1...
  • Page 4 1-2 Front View Refer to Figure 1 and the following numbered steps to familiarize yourself with the transducer. 1. Transformer Jaws — Designed to pick up the a.c. current following through the conductor. 2. Hand Guard — Designed to protect user for safety. 3.

  • Page 5: Specifications

    SPECIFICATIONS Current Range : 0.1A to 400A a.c. RMS. Output Voltage : 1mV a.c. per 1Amp a.c. Working Voltage : 600V CAT. II per IEC 1010-1 Maximum Altitude : 2000m Operating Temperature : 0°C to 45°C <75% R.H. Storage Temperature : -20°C ~ 60°C Type of Sensing : Induction coil sensing for AC current.
  • Page 6 0.2 x (Spec Acc'y)/ °C, < 18°C or > 28°C Temperature Coefficient : Maximum Output Impedance : 75Ω. Maximum Jaw Opening : 30mm. Maximum Conductor Size : 29mm diameter. Size : 72mm (W) x 148mm (L) x 36mm(D) W/O cable. Weight : 250grams.
  • Page 7 Precautions and Preparations for measurement 1. Do not apply the voltage to the output plugs. 2. Do not use or store this instrument in a high temperature or high humidity environment and do not store the unit in direct sunlight. 3.
  • Page 8 Electrical Specification Accuracy is ± (%reading + number of Ampere) at 23°C ± 5 °C, less than 75% R.H. Range Measure Output Accuracy 3Amp ±( 1.9% + 0.5A) 30Amp 30mV 50 ~ 60 Hz 400A 350Amp 350mV ±( 3.2% + 1A) 400Amp 400mV 50 ~ 60 Hz...

  • Page 9: Operation

    OPERATION AC Current Measurement 1. Set the DMM at ACV Function and proper range. 2. Connect the plug of transducer with DMM firmly. 3. Press the trigger to open transformer jaws and clamp one conductor only, making sure that the jaw is firmly closed around the conductor and reading the result from the digital display of DMM.
  • Page 10 Nieaf-Smitt B.V. Vrieslantlaan 6, 3526 AA, Utrecht P.O. Box 7023, 3502 KA, Utrecht, The Netherlands Tel.: +31 (0) 30 288 13 11 Fax: +31 (0) 30 289 88 16 E-mail: sales@nieaf-smitt.nl Internet: http://www.nieaf-smitt.nl http://www.nieaf-instruments.com...