Megger NIM1000 Loop Impedance Meter

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. The Megger NIM1000 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. With its simple operation, handy size, and bright color display, NIM1000 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. FEATURES Measures the grid impedance of the phase & neutral conductor up to the 10th harmonic. Triggers load-sensitive and neutral faults. Performs multi-phase measurements. Tests in accordance with DIN EN 61557-3; VDE 0413-3. Simple to operate with numerical and graphical results. Stored records can either be recalled to the display or transferred to a PC. A Video Insight Into The Megger NIM1000 Megger NIM1000 Specifications Test Current Range 80 to 1000 A (adjustable). Maximum Current (peak) imax (depends on the grid impedance) ? 1000 A @ 400 V ? 600 A @ 230 V ? 300 A @ 115 V. Test Parameters Z = Impedance (value and phase) R = Resistance (real part) X = Reactance (imaginary part) ZPEN = Impedance value PEN (calculated) Z, R, X und ZPEN are displayed for the power frequency up to the 10th harmonic (phase-N, phase-phase) Urms = RMS voltage Imax = max. test current Is = Short circuit current Skv = Continuous short circuit power f = Net frequency VD = Voltage drop at nominal connected power (in %) Pmax = max. connected power at nominal voltage drop. 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). Test Range (at the above accuracy) 10 mΩ ... 5 Ω (230 V / 400 V) 10 mΩ ... 2,5 Ω (115 V). Resolution 1 mΩ. Test Category 300 V CAT IV. Safety Functions Temperature monitoring, fused clamps. Display Sunlight-readable 5.7" TFT, 640 x 480 pixels. Memory Minimum 1000 test records. Interface USB 2.0. Dimensions 410 x 175 x 335 mm. Environmental Operating Temperature: -20 to 55°C Storage Temperature: -30 to 70°C Humidity: max relative humidity 93% at 30°C. Protection Protection class (IEC 61140, DIN VDE 0140-1): insulated acc to protection class II IP protection (IEC 60529, DIN VDE 0470-1): IP50 (lid open), IP53 (lid closed). Megger NIM1000 warranty One-year.

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