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Megger NIM1000 Impedance Meter

Megger
SKU: MEGGNIM1000
  • 1 kA test current for accurate loop impedance testing
  • Multi-phase and neutral impedance measurements
  • Harmonic-capable analysis up to the 10th harmonic
More Info
Made to order

Megger NIM1000 Impedance Meter

The Megger NIM1000 Impedance Meter delivers up to 1 kA of test current to measure loop impedance and identify faults or weaknesses in low-voltage (LV) electrical networks at an early stage. It reliably detects load-dependent and neutral faults, uncovers weak contacts, and reveals hidden defects that may compromise installation safety. Depending on the network’s earthing system, the NIM 1000 can also perform multi-phase measurements, including the determination of neutral conductor impedance, to expose issues that pose significant operational and safety risks.

The NIM 1000 is a highly versatile diagnostic tool capable of assessing the real current-carrying capacity of a network, calculating the voltage drop for a specified load, and testing cables, supply lines, and bus-bars. These capabilities help ensure electrical installations are correctly dimensioned, support stable power quality, and reduce the likelihood of system failures.

By gathering detailed information on load capacity and voltage behaviour, the NIM 1000 provides a clear evaluation of grid performance under actual operating conditions. Its ability to measure complex impedance up to the 10th harmonic makes it particularly effective for modern networks with electronic loads and converters, where harmonic currents introduce additional stress.

Designed for practical field use, the NIM 1000 features a bright, easy-to-read display, intuitive controls, and a compact, robust form factor, which is ideal for technicians and LV utility personnel working in demanding environments.

Key Features

  • Up to 1 kA test current for effective loop impedance measurement and fault detection in LV electrical networks
  • Detection of load-sensitive faults, neutral faults, weak contacts and hidden defects in wiring ot network infrastructure
  • Capability to perform multi-phase and neutral-conductor impedance measurements (depending on earthing arrangement)
  • Ability to assess actual current-carrying capacity, determine voltage drop under load, and test cables, supply lines, and bus-bars for compliance and reliability
  • Supports measurement of complex impedance up to the 10th harmonic, making it suitable for modern networks with electronic and converter-driven loads
  • Compact, field-friendly design with bright, easy-to-read display and intuitive operation, tailored for technicians and LV utility operators in practical use environments
  • Enables evaluation of network performance under real operating conditions, helping ensure installations are correctly dimensioned and stable under load

What's In The Box?

NIM 100 base instrument (128312147), which is also supplied with:

  • Power Kelvin clamps with 3m connection leads
  • AC socket adaptor
  • USB stick for transfer of data to PC
  • Set of spare fuses

    NIM 1000 standard set of cables and accessories (1006123)

    UK socket adapter for NIM 1000 (2005383)

Specification
  • Test Current Range – 80 A … 1000 A (adjustable)
  • Maximum Current Imax -
    ≤ 1000 A at 400 V
    ≤ 600 A at 230 V
    ≤ 300 A at 115 V
  • Input Voltage (serves as supply voltage) -
    90 V … 480 V, 50/60 Hz (at test clamps)
    90 V … 230 V, 50/60 Hz (at power outlet)
  • Operational Accuracy B (acc. To EN 61557-3) – 3% ± 1 digit (at sufficient test current)
  • Resolution – 1 mΩ
  • Test Category – 300V CAT IV
  • Safety Functions – Temperature monitoring, fused clamps
  • Display – Sunlight-readable 5,7” TFT: 640 x 480 pixel
  • Memory – Min. 1000 test records
  • Interface – USB 2.0
  • Operating Temperature -
    -20°C … 55°C
    -4°F … 131 °F
  • Storage Temperature -
    -30 °C … 70 °C
    -22 °F … 158 °F
  • Operating Humidity – Max. relative humidity at 93% at 30°C
  • IP-Protection -
    IP 50 (lid open)
    IP 53 (lid closed)
  • Protection Class – Insulated acc. to protection class II
  • Weight – 10 kg
  • DImensions – 410 x 175 x 335 mm / 16.1 in x 6.9 in x 13.2 in
For further specifications, please view the attached data sheet.
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pdf Megger NIM1000 Datasheet pdf 195.6 KB Download