Instruction Manual - Davis Instruments
Contents
1. 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 00 Cat 2116 31 AC Current Probe SR752 Cat 2116 32 Includes a user manual and a product warranty and registration card Accessories Leads set of 2 5ft safety 1000V Cat 2111 29 Banana plug adapter to nonrecessed plug ee 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 SR751 SR752 Connect the black lead of the current probe to Common and the red lead to the AC voltage 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 conductor around which the probe is clamped 1V AC will come out of the probe leads to your DMM or instrument The output is 1mV 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 1000 to obtain the measured current e g 260mvV 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 Making2. Precise Measurements e 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 e 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 e For maintenance use only original factory replacement parts e To avoid electrical shock do not attempt to perform any servicing unless you are qualified to do so e 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 If the instrument is returned for calibration we need to know if you want a standard calibration or a calibration traceable to N I S T includes calibration certificate pl
3. AC Current Probe Models SR751 and SR752 User Manual DESCRIPTION The SR751 SR752 Catalog 2116 31 and 2116 32 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 to take full advantage of the accuracy of the probe Input impedance of 1MQ WARNING These safety warnings are provided to ensure the safety of personnel and proper operation of the instrument Read the instruction manual completely and follow all the safety information before attempting to use or service this instrument Use caution on any circuit Potentially high voltages and currents may be present and may pose a shock hazard Read the Safety Specifications section prior to using the current probe Never exceed the maximum voltage ratings given Safety is the responsibility of the operator ALWAYS connect the current probe to the display device before clamping the probe onto the sample being tested ALWAYS inspect the instrument probe probe cable and output terminals prior to use Replace any defective p
4. arts immediately NEVER use the current probe on electrical conductors rated above 600V in overvoltage category III CAT III Use extreme caution when clamping around bare conductors or bus bars INTERNATIONAL ELECTRICAL SYMBOLS 0 This symbol signifies that the current probe is protected by double or reinforced insulation Use only factory specified replacement parts when servicing the instrument A 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 l For measurements on circuits not directly connected to the AC supply wall outlet such as protected secondaries signal level and limited energy circuits Cat Il For measurements performed on circuits directly connected to the electrical distribution system Examples are measurements on household appliances or portable tools Cat Ill 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 lt 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 wit
5. cent Conductor lt 0 5mA A AC Influence of Conductor in Jaw Opening 0 1 of reading Influence of Frequency From 30 to 48Hz lt 0 5 of R From 65 to 1000Hz lt 1 of R From 1kHz to 5kHz lt 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 lt 0 15 per 10 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 Ibs 550g Output SR751 Two standard safety banana jacks 4mm SR752 5ft 1 5m lead with safety 4 mm banana plug SAFETY SPECIFICATIONS ce o0 O Electrical E192383 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
6. h 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 AEMC INSTRUMENTS 4 37 111 mm 3 98 101 mm 2 25 57 mm _ ww 912 OS 1 71 43 5 mm _ 3 90 99 mm SR751 ey ELECTRICAL SPECIFICATIONS Current Range 001 to 1000A AC continuous cycle lt 1kHz Output Signal 1mV AC A AC 1V AC at 1000A Accuracy and Phase Shift Accuracy 1mA to 100mA lt 3 Reading 5mV 0 1 to 1A lt 2 Reading 3uV 1 to 10A lt 1 Reading 10 to 100A lt 0 5 Reading 100 to 1200A lt 0 3 Reading 1 22 31 mm I l l l l l l l 1 38 35 mm Phase Shift 1mA to 100mA 0 1 to 1A 1 to 10A 10 to 100A 100 to 1200A Not Specified Not Specified lt 2 lt 1 lt 0 7 Reference conditions 23 C 3 20 to 75 RH 48 to 65Hz external magnetic field lt 40A m no DC component no external current carrying conductor test sample centered Load impedance 1MQ Overload 1200A for 40mn on 20mn off Accuracy Per IEC 185 Frequency Range 30Hz to 5kHz current derating above 1kHz using the formula 1000A x 1 Load Impedance F in kHz 100kQ min Working Voltage 600V Cat III Common Mode Voltage 600V Cat Ill Influence of Adja
7. us recorded calibration data Chauvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive e Dover NH 03820 USA Tel 800 945 2362 Ext 360 603 749 6434 Ext 360 Fax 603 742 2346 or 603 749 6309 repair aemc com Or contact your authorized distributor Costs for repair standard calibration and calibration traceable to N I S T are available 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 call our technical hotline 800 343 1391 508 698 2115 Fax 508 698 2118 Chauvin Arnoux Inc d b a AEMC Instruments techsupport aemc com www aemc com es 99 NMVAN 100167 v6 08 07
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