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Megger BM25 - Page 23

Megger BM25
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23
Leakage current range: 0,01 nA to 999 µA.
Accuracy (0°C to +30°C): ±5% ±0,2 nA at all voltages.
Capacitance range: 0,01 µF to 10,0 µF (measured with test voltages > 200 V).
Accuracy (0°C to 30°C): ±15% ±0,03 µF.
Hum Rejection: 1 mA rms per kV test voltage.
2 mA rms maximum.
Voltage range: 50–1000 V a.c. or d.c.
Note: Display does not distinguish between V a.c. and V d.c.
Accuracy (0°C to +30°C): ±5% ±1 V.
Guard Terminal: Will guard out parallel resistances to a minimum of 250 k.
When measuring 100 M under these conditions, the additional error will be less than 5%.
Capacitor charging time: <5 seconds per µF to charge to 5 kV.
Capacitor discharging time: <2 seconds per µF to discharge to <50 V.
Temperature coefficient: 0,2% per °C (test current >100 nA).
0,1% per °C for test voltage.
Power supply: Two 12 V, 2 Ah Lead-acid rechargeable batteries. Recharge time: 16 hours.
Battery life: typically 8 hours continuous testing.
Voltage Input Range: 95 - 265 V.
Timer: 0 – 90 minutes: user selects test duration.
Fuses: FS1: 100 mA (T), 250 V IEC 127/1.
FS2: 100 mA (F), 250 V IEC 127/1.
Mains power cord fused plug (when applicable): 13 Amp fuse to BS1362.
Safety: The instrument meets the safety requirements for double insulation to IEC 1010-1 (1995).
EN 61010 (1995) to installation Category III, 300 Volts phase to earth (ground) and 500 Volts phase to
phase.
Maximum Continuous Overload: 1 kV rms.

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