The MN255 is a high sensitivity probe with voltage outputs (100mV/A and 10mV/A) and combine two switch-selectable ranges of 20A and 200A, thus permitting accurate measurements at low and high levels. The MN255 has integral 5 ft (1.5m) leads terminated by shrouded banana plugs.
Specifications
ELECTRICAL
Nominal Range
20A & 200A
Measurement Range
0.5 to 240A
Transformation Ratio
Voltage output
Output Signal
20A: 100mV/A, 200A: 10mV/A
Accuracy (20A Range)
1.0% of Reading ± 50mV
Phase Shift (20A Range)
Not Specified
Overload (20A Range)
24A for 10 min ON, 30 min OFF
Accuracy (200A Range)
0.5 to 10A
3.0% of Reading ± 5mV
10 to 40A
2.5% of Reading ± 5mV
40 to 100A
2.0% of Reading ± 5mV
100 to 240A
1.0% of Reading ± 5mV
Phase Shift (200A Range)
0.5 to 10A 10 to 40A 40 to 100A 100 to 240A
Not Specified ≤5.0° ≤3.0° ≤2.5°
Overload (200A Range)
240A for 10 min ON, 30 min OFF
Frequency Range
40 to 10kHz
Limit Operating Conditions
200A permanently to 1kHz; Derating above 3kHz: 200A x (1/0.333F), F in kHz
Crest Factor
3 @ 200Arms with an error (due to CF) of 4%
Working/Common Mode Voltage
600Vrms
Output Termination
5 ft Lead
MECHANICAL
Operating Temperature
14° to 131°F (-10° to 55°C)
Storage Temperature
-40° to 158°F (-40° to 70°C)
Operating Relative Humidity
10 to 35°C 85% RH (without roll-off above 35°C)
Jaw Opening
0.83" (21mm)
Maximum Conductor Size
0.78" (20mm)
Dimensions
5.47 x 2.00 x 1.18" (139 x 51 x 30mm)
Weight
6.5 oz (180g)
Polycarbonate Material
Polycarbonate with fiberglass charge, UL94 V0
SAFETY
Electrical
EN 61010-2-32
UL Approval
Yes – Canada and United States
Double Insulation
Yes
CE Mark
Yes
Note: Reference conditions: 20 to 26°C, 20 to 75% RH, external magnetic field <40A/m, 48 to 65Hz sine wave, distortion factor less than 1%, no DC component, no external current carrying conductor, test sample centered. Load impedance >1Ω
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