AEMC JM840A Data sheet

AC Current Probes Model JM840A (pdf) Rev. 03 10/05

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AC Current Probe
Model JM840A

The Model JM840A 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 core and
uniform windings provide for accurate
measurements up to 500A

AC/1000AAC/

1800A

AC. The “squared” jaw permits

multiple conductor or bus bar positioning.
The Model JM840A provides excellent
True RMS capabilities and reliable
signal reproduction.

The Model JM840A first works as a
traditional current transformer providing
current outputs (mA) over a broad
range of transformation ratios. The
Model JM840A is designed for use on
DMMs, power and harmonic meters,
recorders or instruments with AC
current ranges.

Features

• Nominal range: 500AAC, 1000AAC,

1500A

AC (continuous cycle for the

full temperature range)

• Transformation ratio: 500:1, 1000:1,
1500:1

• Output: 2mA, 1mA

AC/AAC and

0.66mA

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

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Specifications

MODELS JM840A

ELECTRICAL

Nominal Range 1500A
Measurement Range 1 to 1800AAC
Transformation Ratio 500:1. 1000:1, 1500:1
Output Signal 2mA

AC/AAC (1A @ 500A)

1mAAC/AAC (1A @ 1000A)

Accuracy (500A Range)

25A 4% of Reading
100A 3% of Reading
500A 3% of Reading

Phase Shift (500A Range)

25A 4°
100A 3.5°
500A 2° –

Accuracy (1000A Range)

50A 3% of Reading
200A 2% of Reading

1000A 1% of Reading

Phase Shift (1000A Range)

50A 3°
200A 1.5°

3000A 1°

Accuracy (1500A Range)

75A 1.5% of Reading
300A 0.75% of Reading

1500A 0.5% of Reading

Phase Shift (1500A Range)

75A 1.5°
300A 0.75°

1500A 0.5°

Overload 700A for 10 min (500A);

1400A for 10 min (1000A);

1800A for 10 min (1500A)

Frequency Range 30 to 1500Hz; current

derating above 1500Hz

for continuous use

Load Impedance ≤5Ω

(500A, 1000A, 1500A)

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 100-4-2;

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, 45 to 65Hz, external magnetic field < 40A/m, no DC component, no external current carrying conductor,
test sample centered.

AC Current Probes Model JM840A (pdf) Rev. 03 10/05

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Ø=2.52" (64mm)

ORDERING INFORMATION CATALOG NO.

AC Current Probe Model JM840A (Jack – 2mA/A – 500A; 1mA/A – 1000A; .66mA/A – 1500A max) . . . . . . . . Cat. #2110.85

Includes a user manual

Accessories (Optional)

Banana plug adaptor (to nonrecessed plug) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cat. #1017.45

Leads, set of 2, 5 ft safety (1000V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cat. #2111.29

Banana/BNC Connector XF-SS (4mm banana plug) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cat. #2111.32

Jacks:

Two standard
safety banana
jacks (4mm)

Cable max.

1.97 x 5.31" (50 x 135mm) or

2.52 x 3.94" (64 x 100mm)
Bus Bar max.

P1 P2

12.01"

(305mm)

4.72"

(120mm)

1.89"

(48mm)

AC Current Probes Model JM840A (pdf) Rev. 03 10/05

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Contact Us

United States and Canada:

Chauvin Arnoux

®

, Inc.

d.b.a. AEMC

®

Instruments
200 Foxborough Blvd.
Foxborough, MA 02035 USA
[phone] • Fax [phone]
www.aemc.com

Customer Support – for placing an order, obtaining price and delivery:

[e-mail]

Sales Department – for general sales information:

[e-mail]

Repair and Calibration Service – for information on repair and calibration, obtaining a user manual:

[e-mail]

Technical and Product Application Support – for technical and application support:

[e-mail]

Webmaster – for information regarding www.aemc.com:

[e-mail]

South America, Central America, Mexico, Caribbean, Australia and New Zealand:

Chauvin Arnoux

®

, Inc.

d.b.a. AEMC

®

Instruments
15 Faraday Drive
Dover, NH 03820 USA
[phone] • Fax [phone]
[e-mail]
www.aemc.com

All other countries:

Chauvin Arnoux SCA
190, rue Championnet
75876 Paris Cedex 18, France
33 1 44 85 45 28 • Fax [phone]
[e-mail]
www.chauvin-arnoux.com