AEMC JM850A Data sheet
AC Current Probes Model JM850A (pdf) Rev. 03 10/05
Technical Assistance (800) 343-1391 www.aemc.com1of 4
AC Current Probe
Model JM850A
The Model JM850A is 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 1000A
AC/2000AAC/
3400A
AC. The “squared” jaw permits
multiple conductor or bus bar positioning.
The Model JM850A provides excellent
True RMS capabilities and reliable
signal reproduction.
The Model JM850A works as a traditional current transformer providing
current outputs (mA) over a broad
range of transformation ratios. The
Model JM850A is designed for use on
DMMs, power and harmonic meters,
recorders or instruments with AC
current ranges.
Features
• Nominal range: 1000A, 2000A,
3000A (continuous cycle for the full
temperature range)
• Transformation ratio:
1000:1 2000:1, 3000:1
• Output: 1mA/
AC/AAC, 0.5mA/AC/AAC,
0.333mA/
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 JM850A (pdf) Rev. 03 10/05
Technical Assistance (800) 343-1391 www.aemc.com2of 4
MODELS JM850A
ELECTRICAL
Nominal Range 1000A, 2000A, 3000A
Measurement Range 1 to 3400A
Transformation Ratio 1000:1, 2000:1, 3000:1
Output Signal 1mA
AC/AAC (1A @ 1000A)
0.5mA
AC
/AAC (1A @ 2000A)
0.333mAAC/AAC (1A @ 3000A)
Accuracy (1000A Range)
50A 3% of Reading
200A 1.5% of Reading
1000A 1% of Reading
Phase Shift (1000A Range)
50A 3°
200A 1.5°
1000A 1°
Accuracy (2000A Range)
100A 1.5% of Reading
400A 0.75% of Reading
2000A 0.5% of Reading
Phase Shift (2000A Range)
100A 1.5°
400A 0.75°
2000A 0.5°
Accuracy (3000A Range)
150A 1.5% of Reading
600A 0.75% of Reading
3000A 0.5% of Reading
Phase Shift (2000A Range)
150A 1.5°
600A 0.75°
3000A 0.5°
Overload 1400A for 10 min (1000A)
2400A for 10 min (2000A)
3400A for 10 min (3000A)
Frequency Range 30 to 1000Hz, current derating above 1000Hz for continuous use
Load Impedance 2.5Ω (1000A);
5Ω (2000A;
10Ω (3000A)
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, 45 to 65Hz, external magnetic field <40A/m, no DC component, no external current carrying conductor,
test sample centered.
Specifications
Loading...