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Megger MTR105 - Page 87

Megger MTR105
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Temperature measurement and compensation
Thermocouple Type T (Type K and Type J)
Thermocouple range -20 °C to 200 °C (-4 °F - 392 °F)
Instrument range -20 °C to 1000 °C (-4 °F - 1832 °F)
Instrument resolution 0.1 °C (0.18 °F)
Instrument accuracy ±1.0 °C ±20 digits (±1.8 °F)
Low resistance
Test current 200 mA dc
Range 1 mΩ to 10 Ω
Resolution 0.01 mΩ
Accuracy ±(0.25% rdg. ±10 digits)
Inductance
Instrument accuracy
Range Accuracy Test Frequency
1 H ±(0.7 % +(Lx/10000) % +5 digits) 1 kHz
200 mH ±(1.0 % +(Lx/10000) % +5 digits) 120 Hz
±(0.7 % +(Lx/10000) % +5 digits) 1 kHz
20 mH ±(2.0 % +(Lx/10000) % +5 digits) 120 Hz
±(1.2 % +(Lx/10000) % +5 digits) 1 kHz
2 mH ±(2.0 % +(Lx/10000) % +5 digits) 1 kHz only
Results storage
Storage capacity 256 motor results (date / time stamped)
Data download USB Type A (USB Mass Storage Device)
Power
Battery 6 x AA cells
LR6 1.5 V Alkaline,
FR6 1.5 V Lithium (LiFeS2),
HR6 1.2V NiMH (rechargeable option)
Battery life 10 motors per day (complete suite of tests at 100 V into 100 MΩ)
IEC61557-2 - test cycle, 1200 insulation tests with duty cycle of 5 sec
testing on 25 sec standby @ 500 V into 0.5 MΩ
IEC61557-4 test cycle, 1200 continuity tests with duty cycle of 5 sec testing
on 25 sec standby on 1 Ω resistance
Battery charging Mains battery charger kit or 12 - 15 V dc vehicle charger
Safety protection IEC61010 CAT III 600 V
EMC Industrial IEC61326
Temperature coefficient <0.1% per °C up to 1 GΩ
Environment
Operating temperature range -10 °C to 50 °C (14 °F to 122 °F)
Storage temperature range -25 °C to 50 °C (-13 °F to 122 °F)
Specifications
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