AEMC JM875 Data sheet

AC Current Probes Model JM875 (pdf) Rev. 03 10/05

Technical Assistance [phone] www.aemc.com1of 4

AC Current Probe
Model JM875

The Model JM875 is a high
performance AC current probe for
higher currents. Excellent transformation
and low phase shift, plus a broad
frequency response, permit accurate
measurements of current and power.
The high quality magnetic cores and
uniform windings provide for accurate
measurements up to 30A

AC/300AAC/

3000A

AC. The “squared” jaw permits

multiple conductor or bus bar positioning.
The Model JM875 provides excellent
True RMS capabilities and reliable
signal reproduction.

The Model JM875 provides an
accurate voltage output proportional
to the measured current (1mV/A,
10mV/A or 100mV/A). This voltage
output enables instruments without
current ranges to display or log
currents on an AC voltage range.

Features

• Nominal range: 30AAC, 300AAC,

3000A

AC (continuous cycle for the

full temperature range)

• Output: 100mV

AC/AAC, 10mVAC/AAC,

1mV

AC/AAC

• Designed for use on DMMs, power

and harmonic meters, recorders or

instruments with AC current ranges

Applications

• Field testing

• Electrical utility

• HVAC

• Industrial maintenance

• Laboratory

• Plant maintenance

AC Current Probes Model JM875 (pdf) Rev. 03 10/05

Technical Assistance [phone] www.aemc.com2of 4

MODELS JM875

ELECTRICAL

Nominal Range 30A, 300A, 3000A
Measurement Range 1 to 3200A
Transformation Ratio Voltage output
Output Signal 100mV

AC/AAC (3V @ 30A) 90A Peak

10mV

AC

/AAC (3V @ 300A) 900A Peak

1mVac/AAC (3V @ 3000A) 9000A Peak

Accuracy (30A Range)

1.5A 2% of Reading ± 10mV (0.5A)
6A 2% of Reading ± 10mV (0.5A)

30A 2% of Reading ± 10mV (0.5A)

Phase Shift (30A Range)

1.5A 15°
6A 7°

30A 5°

Accuracy (300A Range)

15A 2% of Reading ± 2mV (0.2mA)
60A 2% of Reading ± 2mV (0.2mA)

300A 2% of Reading ± 2mV (0.2mA)

Phase Shift (300A Range)

15A 3°
60A 1.5°

300A 1

Accuracy (3000A Range)

150A 2% of Reading ± 0.5mV
600A 2% of Reading ± 0.5mV

3000A 2% of Reading ± 0.5mV

Phase Shift (3000A Range)

150A 1.5°
600A 1°

3000A 0.5°

Overload 3200A for 5 min
Frequency Range 30 to 5kHz; current derating abouve 200Hz on the 3000A range
Load Impedance >100kHz
Working/Common

Mode Voltage

600V

AC

Output Termination Jack

MECHANICAL

Operating Temperature 14° to 122°F (-10° to 50°C)
Storage Temperature -13° to 176°F (-25° to 80°C)
Jaw Opening 3.54" (90mm)
Maximum Conductor Size Cable: 2.52" Ø max (64mm); Bus bar: 1.97 x 5.31" (50 x 135mm); 2.52 x 3.94" (64 x 100mm)
Dimensions 4.72 x 12.40 x 1.89" (120 x 315 x 48mm)
Weight 2.65 lbs (1200g)
Polycarbonate Material Handles: 10% fiberglass charged polycarbonate UL94 VO; Jaws: ABS UL V2

SAFETY

Electrical EN61010-2-32
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 1000-4-4

Double Insulation Yes

CE Mark Yes

Note: Reference conditions:

23°C ± 3°K, 20 to 85% RH, 48 to 65Hz, external magnetic field <40A/m, no DC component, no external current carrying conductor,
test sample centered, load impedance ≥ 1mΩ.

Specifications