Aemc instruments SR759 User Manual

AC Current Probe
Model SR759

User Manual

DESCRIPTION

The SR759 (Catalog #2116.33) is designed for use in industrial environments. The ergonomic design allows

itm to easily attach to cables or small bus bars. The “circular” jaws guarantee a very good accuracy and low

phase shift. The probe has four measurement ranges with the highest range measuring to 1000Arms
continuous and is compatible with any AC Voltmeter, multimeter, or other voltage measurement instrument
that has the following features: Range and resolution capable of displaying 1mV of output per amp of
measured current; Voltmeter accuracy of 0.75% or better to take full advantage of the accuracy of the
probe; Input impedance of  1M.

WARNING

The safety warnings are provided to ensure the safety of personnel and proper operation of the
instrument. Read the instruction completely.

• Use caution on any circuit: potentially high voltages and currents may be present and may pose a
shock hazard.

• Do not use the probe if damaged. Always connect the current probe to the measuring device before it
is connected around the conductor

• Do not use on non-insulated conductor with a potential to ground greater than 600V CAT III pollution

2. Use extreme caution when clamping around bare conductors or bus bars.

• Before each use, inspect the probe; look for cracks in housing or output cable insulation.

• Do not use clamp in wet environment or in locations that hazardous gases exist.

• Do not use the probe anywhere beyond the tactile barrier.

INTERNATIONAL ELECTRICAL SYMBOLS

This symbol signifies that the current probe is protected by double or reinforced insulation. Use only
factory specified replacement parts when servicing the instrument.

This symbol signifies CAUTION! and requests that the user refer to the user manual before using
the instrument.

This is a type A current sensor. This symbol signifies that application around and removal from
HAZARDOUS LIVE conductors is permitted.

DEFINITION OF MEASUREMENT CATEGORIES

CAT IV: For measurements performed at the primary electrical supply (<1000V) such as on primary

overcurrent protection devices, ripple control units, or meters.

CAT III: For measurements performed in the building installation at the distribution level such as on

hardwired equipment in fixed installation and circuit breakers.

CAT II: For measurements performed on circuits directly connected to the electrical distribution system.

Examples are measurements on household appliances or portable tools.

RECEIVING YOUR SHIPMENT

Upon receiving your shipment, make sure that the contents are consistent with the packing list. Notify your
distributor of any missing items. If the equipment appears to be damaged, file a claim immediately with the
carrier and notify your distributor at once, giving a detailed description of any damage.

ELECTRICAL SPECIFICATIONS

Primary Current

Accuracy %

Phase Shift

0.001 to 0.01A

3% + 1mV

Not Specified

0.01 to 0.1A

3% + 1mV

Not Specified

0.1 to 1A

0.7% + 1mV

10°

1 to 1.2A

0.7% + 1mV

10°

Primary Current

Accuracy %

Phase Shift

0.01 to 0.1A

1% + 0.2mV

Not Specified

0.1 to 1A

0.5% + 0.2mV

5°

1 to 10A

0.5%

2°

10 to 12A

0.5%

2°

Primary Current

Accuracy %

Phase Shift

0.1 to 1A

1% + 0.2mV

Not Specified

1 to 10A

0.5% + 0.2mV

2°

10 to 100A

0.3%

1°

100 to 120A

0.2%

1°

Primary Current

Accuracy %

Phase Shift

1 to 10A

1% + 0.2mV

Not Specified

10 to 100A

0.5% + 0.2mV

2°

100 to 1000A

0.2%

1°

1000 to 1200A

0.2%

1°

Current Range:

0.1 to 1000AAC, continuous cycle

with frequency  500Hz

Output Signal: 1mVAC/AAC (1VAC at 1000A)

Accuracy and Phase Shift*:

1A Range

100A Range

1000 A Range

10A Range

*Reference conditions: 23°C ± 3°K, 20 to 75% RH, 48
to 65Hz, external magnetic field < 40A/m, no DC
component, no external current carrying conductor, test
sample centered. Load impedance 1M

Overload: 1200A for 15 min on, 30 min off
Accuracy: Per IEC 185
Frequency Range: 30Hz to 3kHz; current

derating above 500Hz
using the formula:

Load Impedance:

100k min

Working Voltage: 600V CAT III
Common Mode Voltage: 600V CAT III
Influence of Adjacent Conductor: < 1mA/AAC
Influence of Conductor in Jaw Opening:

0.3% of Reading

Influence of Frequency:

1mV/A Range: < 1% R from 10Hz to 1kHz
10mV/A Range: < 1.5% R from 10Hz to 3kHz
100mV/A Range: < 2% R from 10Hz to 3kHz
1000mV/A Range: < 2% R from 30Hz to 1kHz

Open Voltage: 8V peak max.

MECHANICAL SPECIFICATIONS

Operating Temperature:

14° to 122°F (-10° to 50°C)

Storage Temperature:

-4° to 158°F (-20° to 70°C)

Influence of Temperature:

< 0.15% per 10°K

Influence of Humidity:

From 10 to 90%: 0.1%

Jaw Opening: 2.25" (57mm) max
Maximum Conductor Size:

2.05" (52mm)

Envelope Protection: IP 40 (IEC 529)
Drop Test: 1 m (IEC 68-2-32)

100 g (IEC 68-2-27)

Vibration:

5 to 15Hz, 0.15mm (IEC 68-2-6)
15 to 25Hz, 1mm
25 to 55Hz, 0.25mm

Polycarbonate Material:

Handles: ABS Grey and
Lexan 500R, Red: UL94V0
Jaws: Lexan 500R, Red: UL94V0

Dimensions:

4.37 x 8.50 x 1.77" (111 x 216 x 45mm)

Weight:

1.21 lbs (550g)

Output:

SR759: 5 ft (1.5m) lead with safety
4mm banana plug

SAFETY SPECIFICATIONS

Electrical:

Double insulation or reinforced insulation between
the primary or secondary and the outer case of the
handle conforms to IEC 1010-2-032.

Common Mode Voltage:

600V Category III, Pollution Degree 2

Dielectric Strength:

5550V, 50/60Hz between primary, secondary
and the outer case of the handle

Electromagnetic Compatibility:

EN 50081-1 Class B
EN 50082-2 Electrostatic discharge
IEC 1000-4-2
Radiated field IEC 1000-4-3
Fast transients IEC 1000-4-4
Magnetic field at 50/60 Hz IEC 1000-4-8

ORDERING INFORMATION

AC Current Probe SR759 ................ Cat #2116.33

Accessories:

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

(to non-recessed plug) ...................... Cat #1017.45

OPERATION

Please make sure that you have already read and fully understand the WARNING section on page 1.

Making Measurements with the AC Current Probe Model SR759

 Connect the black and red terminals to the 2VAC range of your DMM or voltage measuring instrument.

Select the appropriate current range (1000/1V). Clamp the probe around the conductor to be tested with
the arrow pointed toward the load. Read the value display on the DMM and multiply it by the probe ratio
selected. (e.g. If reading = 185mV, the current flowing through the probe is 185 x 1000 = 185,000mA =
185A when 1mV/A range is selected.)

 For best accuracy, avoid if possible, the proximity of other conductors which may create noise.

Tips for Making Precise Measurements

 When using a current probe with a meter, it is important to select the range that provides the best

resolution. Failure to do this may result in measurement errors.

 Make sure that probe jaw mating surfaces are free of dust and contamination. Contaminants cause air

gaps between the jaws, increasing the phase shift between primary and secondary. It is very critical for
power measurement.

MAINTENANCE
Warning:

 For maintenance use only original replacement parts.
 To avoid electrical shock, do not attempt to perform any servicing unless you are qualified to do so.
 To avoid electrical shock and/or damage to the instrument, do not get water or other foreign agents

into the probe.

Cleaning: To ensure optimum performance, it is important to keep the probe jaw mating surfaces clean at all
times. Failure to do so may result in error in readings. To clean the probe jaws, use very fine sand paper (fine

600) to avoid scratching the jaw then gently clean with a soft oiled cloth.

REPAIR AND CALIBRATION

You must contact our Service Center for a Customer Service Authorization number (CSA#). This will ensure
that when your instrument arrives, it will be tracked and processed promptly. Please write the CSA# on the
outside of the shipping container.

(Or contact your authorized distributor)

NOTE: All customers must obtain a CSA# before returning any instrument.

Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments
15 Faraday Drive • Dover, NH 03820 USA
[phone] (Ext. 360) • [phone] (Ext. 360) • [e-mail]

TECHNICAL AND SALES ASSISTANCE

If you are experiencing any technical problems, or require any assistance with the proper use or application
of this instrument, please contact our technical hotline:

LIMITED WARRANTY

The current probe is warranted to the owner for a period of two years from the date of original purchase
against defects in manufacture. This limited warranty is given by AEMC® Instruments, not by the distributor
from whom it was purchased. This warranty is void if the unit has been tampered with, abused or if the defect
is related to service not performed by AEMC® Instruments.

Full warranty coverage and product registration is available on our website at: www.aemc.com/warranty.html

Please print the online Warranty Coverage Information for your records.

[phone] (Ext. 351) • [phone] (Ext. 351) • [e-mail]

99-MAN 100168 v10 03/18