AC Current Probe Models SR701 and SR704

Description

The SR701/SR704 (Catalog #2116.29 and #2116.30) 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 and are compatible with any AC ammeter, multimeter, or other current measurement instrument with an input impedance lower than 5Ω. To achieve the stated accuracy, use the SR701/SR704 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.
• 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

• [Double Insulation Symbol] ?: This symbol signifies that the current probe is protected by double or reinforced insulation. Use only factory specified replacement parts when servicing the instrument.

• [Caution Symbol] ?: This symbol signifies CAUTION! and requests that the user refer to the user manual before using the instrument.

• [Type A Current Sensor Symbol] Ⓐ: 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 II: For measurements performed on circuits directly connected to the electrical distribution system. Examples are measurements on household appliances or portable tools.

• 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 IV: For measurements performed at the primary electrical supply (<1000V) such as on primary overcurrent protection devices, ripple control units, or meters.

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.

Diagram Description

Diagram illustrating the physical dimensions and features of the SR701 and SR704 AC Current Probes. The probes have a clamp jaw with a maximum opening of 2.25 inches (57mm) and can accommodate conductors up to 2.05 inches (52mm). Overall dimensions are approximately 4.37 x 8.50 x 1.77 inches (111 x 216 x 45mm). A tactical barrier is present for safety. The SR701 model features two standard safety banana jacks, while the SR704 model includes a 5 ft (1.5m) lead with a safety 4mm banana plug. Connection points for black and red leads are also shown.

Electrical Specifications

Frequency Range and Derating

30Hz to 5kHz; current derating above 1kHz using the formula: 1000 A x 1 / F (in kHz)

Load Impedance

5 Ω 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

0.1% of reading

Influence of Frequency

• From 30 to 48Hz: < 0.5% of R
• From 65 to 1000Hz: < 1% of R
• From 1kHz to 5kHz: < 2% of R

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: 1m (IEC 68-2-32)
• Mechanical Shock: 100g (IEC 68-2-27)
• Vibration: 5 to 15Hz, 0.15mm (IEC 68-2-6); 15 to 25Hz, 1mm; 25 to 55Hz, 0.25mm

Materials

• Polycarbonate Material: Handles: ABS Grey and Lexan 500R, Red: UL94V0; Jaws: Lexan 500R, Red: UL94V0

Dimensions and Weight

• Dimensions: 4.37 x 8.50 x 1.77" (111 x 216 x 45mm)
• Weight: 1.21 lbs (550g)

Output

• SR701: Two standard safety banana jacks (4mm)
• SR704: 5 ft (1.5m) lead with safety 4 mm 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 Probes

• SR701: Cat #2116.29
• SR704: Cat #2116.30

Accessories

• Lead, set of 2, 5ft Safety Leads (1000V CAT IV): Cat#2152.24
• Adapter BNC (Male) – Banana (Female) (XM-BB) (600V CAT III): Cat#2118.46
• Banana plug adapter (to non-recessed plug): Cat #1017.45

Operation

Making Measurements with the AC Current Probe Model SR701/SR704

• 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. Select the appropriate current range (2A AC range). Clamp the probe around the conductor to be tested with the arrow pointed toward the load. If the reading is less than 200mA, select the lower range until you obtain the best resolution. Read the value display on the DMM and multiply it by the probe ratio (1000/1). (If reading = 0.659A, the current flowing through the probe is 0.659A x 1000 = 659A AC).
• 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
(800) 945-2362 (Ext. 360) • (603) 749-6434 (Ext. 360) • repair@aemc.com

(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:

(800) 343-1391 • (508) 698-2115 • techsupport@aemc.com

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.