Atec Megger-BM Series - Manual (Page 2)

BM11 BM11D
Features
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Large direct reading analogue scale
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Large Analogue/digital display
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Guard terminal
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Built-in timer
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Rugged case design
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Locking test leads for safety
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123 mm scale length
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Battery indicator
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Weatherproof to IP54
Note: Not for sale in E.U.
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Voltage measurement and warning
BM11, BM11D, BM21 and BM25
5 kV Analogue/Digital Insulation Testers
FeATUres AnD BeneFITs
All BM11 series
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Choice of test voltages
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Direct reading display
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Unique rugged case
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Guard terminal
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Designed for user safety
BM11D
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Large, custom Analogue/Digital LCD
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Built-in timer
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Locking test leads for safety
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Battery indicator
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Automatic discharge of capacitance
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Voltage measurement and warning
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Tests to 500 GΩ
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Weather proof to IP54
Test voltages (d.c.) 500, 1000, 2500, 5000 V 500, 1000, 2500, 5000 V
Accuracy (20°C) ±5% on open circuit ±5% on 100 MΩ load
Insulation 100 kΩ to 100 GΩ; at all test voltages Digital 10 kΩ to 50 GΩ @ 500 V
Resistance 10 kΩ to 100 GΩ @ 1000 V
Range 10 kΩ to 250 GΩ @ 2500 V
10 kΩ to 500 GΩ @ 5 kV
Analogue 100 kΩ to 1 TΩ @ all voltages
Basic Accuracy ±1,5% of arc length ±5% of reading 10 MΩ to 100 GΩ @ 5 kV
Short Circuit
Current 1 mA nominal, 2 mA max. 1,8 mA nominal, 2 mA max.
Voltage Range 50 to 1000 V d.c. or a.c. 50 to 1000 V d.c. or a.c.
Accuracy (20°C) ±5% ±10 V ±2% ±1 V
Display Analogue Analogue/digital (3 digits)
Interference
Rejection 2 mA a.c. (50/60 Hz) on 5 kV range 1 mA r.m.s. per kV to a maximum 2 mA
Capacitor
Discharge Time <1 s per µF to discharge from 5000 V to 50 V <2 s per µF to discharge from 5000 V to 50 V
Leakage current
measurement
None None
Capacitance
measurement None None
Timer None Automatic; 0 to 60 minutes
Temperature Operating -15 to +55°C (5 to +131°F) Operating -20to +50°C (-4 to 122°F)
Range Storage -40 to +65 °C (-40 to +149°F) Storage -25 to +65 °C (-13 to +149°F)
Temperature
Coefficient < 0,04% of arc length per °C (0.2%/°F) (Applies over range 0 to 30°C) (32 to 86°F)
0,2% per °C (0.1%/°F) for test currents >100 nA 0,1% per °C to test voltage (0.05% per °F)
Humidity Range
90% RH @ 40°C max. (104°F) 90% RH @ 40°C max. (104°F)
Safety IEC348 IEC1010-1 (1995), EN61010 (1995) to installation
category III, 300 V, phase to earth, 500 V phase to phase