Aemc instruments SR632, SR631 User Manual

AC Current Probe
Models SR631 and SR632

User Manual

DESCRIPTION

The Models SR631/SR632 (Catalog #2113.47 and #2114.79) are designed for use in industrial
environments. The ergonomic design allows them to easily attach to cables or small bus bars. The

“circular” jaws guarantee a very good accuracy and low phase shift. The probes have a measurement

range up to 1000Arms. continuous and are compatible with any AC ammeter, multimeter, or other current
measurement instrument with an input impedance lower than 0.6. To achieve the stated accuracy, use
the SR631/SR632 with an ammeter having an accuracy of 0.75% or better.

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

1 to 20A

20A

50A

Accuracy %

< 6% ± 0.5A

5%

3%

Phase shift

N/A

5°

3°

Primary current

200A

1000A

1200A

Accuracy %

1.5%

1%

1%

Phase shift

1.5°

1°

1°

SR631

SR632

Current Range:

0.1 to 1000A AC, continuous cycle @ ≤ 1kHz

Transformation Ratio: 1000:5
Output Signal:

5mA AC/A AC (5A AC at 1000A)

Accuracy and Phase Shift*:

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

sample centered. Load impedance 0.2Ω @ lead < 40 mΩ.

Overload: 1200 A for 30 mn on, 15 mn off
Accuracy: Per IEC 185
Frequency Range: 30 Hz to 5 kHz; current derating

above 1 kHz using the formula:

Load Impedance: 0.6 max
Working Voltage: 600V CAT III
Common Mode Voltage: 600V CAT III
Open Secondary Voltage:

< 25V by limiting circuit

Influence of Adjacent Conductor:

< 1mA/A AC

Influence of Conductor in Jaw Opening:

0.2% of reading

Influence of Frequency:

From 30 to 48 Hz: < 1% of R
From 65 to 1000 Hz: < 0.5% of R
From 1 kHz to 5 kHz: < 1% of R

Dimensions:

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

Weight:

1.21 lbs. (550 g)

Output:

SR631: Two standard safety banana
jacks (4 mm)

SR632: 5 ft. (1.5 m) lead with safety
4mm banana plug

SAFETY SPECIFICATIONS

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:

< 0.1% per 10°K

Influence of Humidity:

From 10 to 90%: 0.1%

Jaw Opening:

2.25" (57 mm) max.

Maximum Conductor Size:

2.05” (52 mm)

Envelope Protection:

IP 40 (IEC 529)

Drop Test:

1 m (IEC 68-2-32)

Mechanical Shock:

100 g (IEC 68-2-27)

Vibration:

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

Polycarbonate Material:

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

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, 50/60 Hz 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 SR631 ................ Cat #2113.47

AC Current Probe SR632 ................ Cat #2114.79

Accessories:

Leads, set of 2, 5 ft. safety (1000 V) . 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 SR631/SR632

 Connect the black lead of the current probe to “common” and the red lead to the AC current input on

your DMM or other current-measuring instrument. The AC current probe has a ratio of 1000:5. This
means that for 1000A AC in a conductor around which the probe is clamped, 5A AC will come out of the
probe leads to your DMM or instrument. The output is 5mA AC/A AC. Select the range which
corresponds to the measured current. If the current magnitude is unknown, start with the highest range
and work down until the appropriate range and resolution are reached. Clamp the probe around the
conductor. Take the reading on the meter and multiply it by 200 to obtain the measured current (e.g,
260mA reading = 260 x 200 = 52,000mA or 52A).

 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.

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

(Or contact your authorized distributor)

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

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

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.

99-MAN 100133.v12 03/18