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: