AC Current Probe
Model MD301
The Model MD301 is built for
ruggedness, versatility and ease of
use. It is designed with a unique
hook-shaped jaw that enables the user
to “pry” into or “hook” onto cables (will
accept 2 x 500kcmil) or even smaller
bus bars.
The Model MD301 measures up to
500A. It provides a voltage output
proportional to the measured
current.
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This voltage output enables
instruments without current ranges to
measure, display or log currents on an
AC voltage range.
The electronics and batteries are
self-contained in the handles.
The output of AC probes is
d c /Aa c .
1mV
Features
• Unique hook-shaped jaws that
enable the user to “pry” into or
“hook” onto cables
• Maximum conductor size is
2 x 500kcmil
• Works as a traditional current
transformer with ratio of 1000:1
Applications
• Electric utility
• Field testing
• HVAC
• Industrial maintenance
• Laboratory
• Plant maintenance
MD301_120107 (pdf) 0410 Rev. 02
Specifications
MODEL MD301
ELECTRICAL
Nominal Range 500A
Measurement Range 2 to 500Aa c
Transformation Ratio Voltage output
Output Signal 1mVd c /Aa c
Accuracy (500A Range)
25A 5% of Reading
100A 2% of Reading
250A 1% of Reading
500A 1% of Reading
Phase Shift 25A –
100A –
250A –
500A –
Overload 700A for 10 min
Frequency Range 48 to 1000Hz
(error: add 2% to the ref.)
Load Impedance ≥100kΩ
Working Voltage 600Vrms
Common Voltage 600Vrms
Output Termination 5 ft Lead
MECHANICAL
Operating Temperature -5° to 122°F (-15° to 50°C)
Storage Temperature -40° to 185°F (-40° to 85°C)
Jaw Opening 1.3” (33mm)
Maximum Conductor Size 1.18” (30mm), Max Bus Bar size: 2.48 x 0.20” (63 x 5mm)
Dimensions 2.6 x 7.68 x 1.34” (66 x 195 x 34mm)
Weight 14.82 oz (420g)
Polycarbonate Material Handles: 10% fiberglass charged polycarbonate UL94 VO
SAFETY
Electrical EN 61010-2-032
600V CAT III, Pollution: 2; 300V CAT IV, Pollution: 2
Electromagnetic EN 50081-1 Class B; EN 50082-2 Electrostatic discharge IEC 1000-4-2;
Compatibility Radiated field IEC 1000-4-3; Fast transients IEC 1000-4-4; Magnetic field at 50/60Hz IEC 1000-4-8
Double Insulation Yes
CE Mark Yes
Note: Reference conditions:
23°C ± 5°K, 20 to 75% RH, external magnetic field < 40A/m, no DC component, no external current carrying conductor, test sample
centered, 10Ω load.
MD301_120107 (pdf) 0410 Rev. 02
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