Aemc instruments SR652, SR651 User Manual

AC Current Probe
Models SR651 and SR652

User Manual

DESCRIPTION

The Models SR651/SR652 (Catalog #2113.45 and #2113.46) 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 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.

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

0.1 to 10A

10A

50A

Accuracy %

3%

1.5%

Phase shift

N/A

3°

1.5°

Primary current

200A

1000A

1200A

Accuracy %

.75%

0.5%

0.5%

Phase shift

0.75°

0.5°

0.5°

SR651 SR652

Current Range:

0.1 to 1000AAC, continuous cycle @  1kHz

Output Signal:

1mVAC/AAC (1VAC 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 1M.

Overload: 1200A for 40 mn on, 20 mn off
Accuracy: Per IEC 185
Frequency Range: 30 Hz to 5 kHz; current derating

above 1kHz using the formula:

Load Impedance: 100k min.
Working Voltage: 600V, CAT III
Common Mode Voltage: 600V, CAT III