AEMC SR751 Operation & User’s Manual

Models SR751 and SR752 User Manual DESCRIPTION The SR751/SR752 (Catalog #2116.31 and #2116.32) are designed for use in industrial env ironments. The ergonomic design allow s them to easily attach to cables or small bus bars. The “circular” jaw s guarantee a very good accuracy and low phase shift. T he probes hav e a m easurement range up to 1000Arms. continuous and are compatible w ith any AC v oltmeter, multim eter, or other v oltage measurement instrument that has the following features: Range and resolution capable of displaying 1mV of output per amp of measured curr ent; voltmeter accuracy of 0.75% or better to take full adv antage of the accuracy of the probe; Input impedance of  1M. WARNING The safety warnings are prov ided to ensure t he 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 w ith a potential to ground greater than 600V C AT 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 I: For measurements on circuits not directly connected to the AC supply w all outlet such as protected secondaries, signal level, and limited energy circuits. CAT II: For measurements performed on circuits directly connected to the electrical distribution sy stem. Examples are measurements on household appliances or portable tools. CAT III: For measurements performed in the building inst allation at the distribution lev el such as on hardwired equipment in fixed installation and circuit breakers. CAT IV: For measurements performed at the primary el ectrical 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 consis tent 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.

Output Signal: 1mV AC/A AC (1V AC at 1000A) Accuracy and Phase Shift*: Accuracy: 0.1 to 1A:  2% Reading ± 3µV 1 to 10A:  1% Reading 10 to 100A:  0.5% Reading 100 to 1200A:  0.3% Reading Phase Shift: 0.1 to 1A: Not Specified 1 to 10A:  2° 10 to 100A:  1° 100 to 1200A:  0.7° *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 40mn on, 20mn off Accuracy: Per IEC 185 Frequen 5kHz; cu 1kHz usi Load Im 100km Working 600V CA Commo 600V CA Influenc < 0.5mA Influenc 0.1% of r Influenc From 30 From 65 From 1k MECH Operatin -14° to 1 Storage -4° to 15 Influenc < 0.15% Influenc From 10 Jaw Ope 2.25" (5 Maximu 2.05” (52 Envelop IP 40 (IE Drop Te 1m (IEC Mechan 100g (IE Vibratio 5 to 15H 15 to 25H 25 to 55H 4.37" (111mm) 3.98" (101mm) 2.25" (57mm) 1.22" (31mm) 8.50" (216mm) 1.71" (43.5 mm) 1.38" (35 mm) Tactical Barrier (keep hands below this barrier) 1.77" (45 mm) 3.90" (99 mm) 2.13" (54.1mm) Black Red SR751 SR752

5kHz; current derating above 1kHz using the formula: Load Impedance: 100kmin. Working Voltage: 600V CAT III Common Mode Voltage: 600V CAT III Influence of Adjacent Conductor: < 0.5mA/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 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: SR751: Two standard safety banana jacks (4mm) SR752: 5ft. (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 50/60Hz IEC 1000-4-8 ORDERING INFORMATION AC Current Probe SR751 ................ Cat #2116.31 AC Current Probe SR752 ................ Cat #2116.32 Includes probe and a user manual. Accessories: Leads, set of 2, 5ft. safety (1000V) ... Cat #2111.29 Banana plug adapter (to nonrecessed plug) ...................... Cat #1017.45 1000 A x 1 F (in kHz) E192383

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 SR751/SR752  Connect the black lead of the current probe to “Co mmon” and the red lead to the AC v oltage input on your DMM or other voltage-measuring instrument. The AC current probe has a ratio of 1000:1. This means that for 1000A AC in a c onductor around which the probe is clam ped, 1V AC w ill come out of the probe leads to y our DMM or instrument. The output is 1mV AC/A AC. Select the range w hich corresponds to the measured current. If the current magnitude is unknown, start with the highest range and work down until the appropriate range and reso lution are reached. Clamp the probe around the conductor. Take the reading on the meter and multiply it by 1000 to obtain the measured current (e.g, 260mV reading = 260 x 1000 = 260,000mA or 260A)  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 w ith a meter, it is im portant to select the r ange that prov ides the best resolution. Failure to do this may result in measurement errors.  Make sure that probe jaw mating surfaces are fr ee 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 factory 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 w ater or other foreign agents into the probe. Cleaning: To ensure optimum performanc e, it is important to keep the probe jaw mating surf aces clean at all times. Failure to do so may result in error in readings. To clean the probe jaw s, use v ery fine sand paper (fine 600) to avoid scratching the jaw, then gently clean with a soft oiled cloth.  � � � � � � � � � � � � � LIMITED WARRANTY The current probe is w arranted to the owner for a period of one y ear from the dat e of original purchase against defects in manufacture. This limited w arranty is giv en by AEMC ® Instruments, not by the distributor from whom it was purchased. This warranty is void if the unit has been tampered w ith, 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. A M Us DES The The guar 1000 mea of ou the a W T in • • • • • • INTE DEF CAT CAT CAT CAT REC Upo your with