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INSULATION RANGES
Nominal test
Voltage (d.c.):
Measuring Range:
Terminal Voltage (d.c.): +15% maximum on open circuit.
Short Circuit Current:
Test Current on Load: 1 mA at min. pass values of insulation specified
Accuracy (at 20 °C):
CONTINUITY RANGES
Measuring Range:
Open Circuit Voltage:
Short Circuit Current:
Accuracy (at 20 °C):
Zero Offset Adjust:
Continuity Beeper:
RESISTANCE RANGE (can be used for diode testing)
Measuring Range:
Open Circuit Voltage:
Short Circuit Current:
Accuracy (at 20 °C):
TYPICAL TERMINAL VOLTAGE CHARACTERISTICS
VOLTAGE RANGE
Analogue Scale
0 to 500 V
1,0 to 50 V
The instruments meet the requirements for double insulation to IEC 1010-
1 (1995) EN 61010-1 (1995) to Category III*, 300 Volts phase to earth,
440 Volts phase to phase, without the need for separately fused test
leads. If required, fused test leads are available as an optional accessory.
The BM402/2 and BM404/2 do not incorporate a voltage range and
must not be intentionally connected to live circuits. *Relates to transient
overvoltage likely to be found in fixed installation wiring.
SPECIFICATION
BM400/2
BM402/2
500 V
1000 V
0,01MΩ to 999 MΩ on all ranges (0 to 10 GΩ
on analogue scale)
< 2 mA
in BS7671, HD384 and IEC 364, 2 mA max.
± 2%, ± 2 digits
0,01Ω to 99,9 Ω (0 to 50 Ω on analogue scale)
5 V, ±1 V
205 mA, ± 5 mA
1Ω to 9,99 Ω: ± 2%, ± 2 digits
10Ω to 99,9 Ω: ± 5%
0Ω to 9,99 Ω
Operates at less than 5 Ω
0,1kΩ to100 kΩ (0 to10 MΩ on analogue scale)
5 V, ± 1V
20 µA, ±5 µA
± 5% ± 2 digits
1100
1000
900
800
700
600
500
400
300
200
100
0
1
0.01
0.1
RESISTANCE (MΩ)
Measurement Scale
0 to 450 V d.c. or a.c. (50/60 Hz)
450 to 600 V d.c. or a.c.(50/60 Hz)
0 to 450 V 400 Hz a.c.
1,0 to 50,0 V d.c. or a.c. (50/60 Hz)
BM401/2
BM404/2
500 V
1000V
1000V
500V
500V
250V
250V
10
100
1000
SAFETY
BM403/2
250 V, 500 V
1000 V
Accuracy(above 1 V)
± 1% ± 2 digits
± 2% ± 2 digits
± 5% ± 2 digits
± 2% ± 3 digits
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