Megger NIM1000 Impedance Meter
 
High test current up to 1000 A
Single or three-phased measurements
Measurement of the net impedance up to the 10th harmonic
Display of all measured parameters
Tests in accordance with DIN EN 61557-3; VDE 0413-3
With a test current of up to 1 kA the NIM1000 measures the network impedance of the phase and neutral conductors to the 10th harmonic. It highlights load-sensitive and neutral faults, detects poor contacts and unseen problems. It is also useful for measuring the earth loop impedance close to the source of supply.
Description
With up to 1kA test current, the NIM 1000 measures the loop impedance to detect malfunctions in the LV grid at an early stage.
The impedance meter triggers load-sensitive and neutral faults, detects weak contacts, and exposes hidden flaws. Depending on the grounding conditions of the tested grid, a multi-phase measurement calculates the impedance of the neutral conductor to detect defects that can cause severe safety issues.
NIM 1000 is a versatile device: it measures the current capacity under real-life conditions, determines the voltage dip resulting from a given load, and performs tests on cables, power supply lines, and bus-bars. Those tests help determine the correct dimensioning of the installations, ensure a consistently good power quality, and prevent downtimes.
The collected data provide a comprehensive and reliable evaluation of the power grid in terms of current load capacity and voltage fluctuations under load.
A common cause for voltage fluctuations are electronic loads and converters. Those generate strong harmonic currents that add to the base frequency, elevating the load significantly.
To find out how the grid performs under load, the NIM 1000 measures the complex impedance up to the 10th harmonic.
With its simple operation, handy size, and bright color display, NIM 1000 is a user-friendly device, developed specifically for the needs of LV utilities and their testing technicians who work in today’s demanding and competitive market conditions.