Calibration Manual
Contents
1. 1 9o 5 digits Frequency via Jaw Range 375 and 5 0 500 0 Hz Resolution ee 0 1 Hz A T 0 5 5 digits Trigger Level 5 10 Hz gt 10 A 10 100 Hz gt 5 100 500 Hz gt 10 Frequency Flexible Current Probe Range MIMO ee 5 0 500 0 Hz A 0 1 Hz f 0 5 5 digits Trigger 5 20Hz 225A 20 100 Hz 220A 100 500 Hz 2 25 Resistance Range 6000 Q A 60 kQ Resolution cr M T 0 1 x 600 Q x 6000 Q 3 9 aNd 3 6 0 1 Q lt 600 Q x 60000 10 Q lt 60 ade 1 5 digits Capacitance A 1000 uF Resolution 1 1 0 1 uF x 100 uF 1 u F lt 1000 uF o 1 4 digits Clamp Meter Specifications 374 375 376 Calibration Manual Mechanical Specifications Size E x W XH anne 246 mm x 83 m x 43 mm Wed adenda E 388 Y JAW Opening nr 34 mm Flexible Current Probe Diameter 7 5 mm Flexible Current Probe Cable Length head to electronics connector 1 8m Environmental Specifications Operating Temperature 10 C 50 C Storage 40 60 Operating Humidity2. Non condensing lt 10 C lt 90 RH at 10 C 30 C lt 75 RH at 30 40 lt 45 RH at 40 C 50 C Operating Altitude 3000 meters Storage Altitude 12 000 meters EN EN 61326 1 2006 Temperature Coefficients Add 0 1 x specified accuracy for each degree C above 28 C or below 18 C Safety Specifications Safety CAN CSA C22 2 No 61010 1 04 ANSI UL 61010 1 2004 ANSI ISA 61010 1 82 02 01 2004 EN IEC 61010 1 2001 to 1000V Measurement Category CAT III 600V Measurement Category CAT IV Pollution Degree 2 EN IEC 61010 2 032 2002 EN IEC 61010 031 2002 1 2008 Agency 2 AA NEDA 15 IEC LR6 Clamp Meter Performance Tests Performance Tests AWarning To prevent possible electrical shock fire or personal injury do not perform the performance test procedures unless the Product is fully assembled The following performance tests verify the complete operation of the Product and check the accuracy of each function against the Product s specifications See Table 2 If the Product fails any part of the test calibration adjustment and or repair 1s indicated See Calibration Adjustment Table 2 Performan
3. 374 375 376 Clamp Meter Calibration Manual December 2010 2010 Fluke Corporation All rights reserved Specifications are subject to change without notice All product names are trademarks of their respective companies LIMITED WARRANTY AND LIMITATION OF LIABILITY Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service The warranty period is three years and begins on the date of shipment Parts product repairs and services are warranted for 90 days This warranty extends only to the original buyer or end user customer of a Fluke authorized reseller and does not apply to fuses disposable batteries or to any product which in Fluke s opinion has been misused altered neglected contaminated or damaged by accident or abnormal conditions of operation or handling Fluke warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non defective media Fluke does not warrant that software will be error free or operate without interruption Fluke authorized resellers shall extend this warranty on new and unused products to end user customers only but have no authority to extend a greater or different warranty on behalf of Fluke Warranty support is available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable international price Fluke reserv
4. 5 500 Hz Crest Factor 50 60HZ 3 0 at 1100 A 375 and 376 only 2 5 at 1400 A 1 42 at 2500 A Add 2 96 for C F gt 2 m1 mVoltsAmps nl HFHZKODCAC B BBB LI MIN MAX MAXMIN 2 Y 0 Clamp Meter The Meter CAT 1000 CAT soov vo COM fig01 eps 374 375 376 Calibration Manual Position Sensitivity ghn12 eps Figure 2 Position Sensitivity Distance from 12500 10 Flex i2500 18 Flex UEM 05 127 mm 12 7 mm 1 4 in 14 356 Measurement uncertainty assumes centralized primary conductor at optimum position no external electrical or magnetic field and within operating temperature range DC Current Range SEDE een 600 0 A BID ANNE vise E anes castle ert eee 999 9A aiio m 0 1A f veu ARR 2 5 digits AC Voltage Range qo orto SEHE 600 0 V ori 1000 V Resolution IIA 0 1V A nn 0 1 V lt 600 0 V 1 V lt 1000 V P 1 5 5 digits 20 500 Hz Voltage Range 374 and anerkannten etna 600 0 V iom GU 1000 V Resolution 3 4 and J75 T 0 1 V A een 0 1 V lt 600 0 1 V lt 1000 V PAC GUIACY A E 1 5 digits mV dc Range 375 and 31 T 500 0 mV Resolution etta su dub 0 1 mV 12 8 5 0 M
5. OIL Power ET 3 0 V Common power supply or a 2 x AA or AAA battery container 10 Clamp Meter Calibration Adjustment Adjustment Procedure To adjust Product calibration l Za SM A xs 7 8 9 Turn the Product over to access battery compartment door screw Use a flat head screwdriver to loosen the battery compartment door screw and lift off the battery compartment door See Figure 5 Remove the calibration sticker Connect the Power Supply to the Product battery terminals Turn the Product ON Use a small jumper to short the two pads together under the calibration sticker This will put the Product into calibration mode See Figure 3 Short circuit these two pads for 1 to access to Calibration mode ghn51 eps Figure 3 Calibration Activation Turn the rotary switch to select the function to be calibrated Apply the required output from the source to the Product See Table 4 Wait until each applied output stabilizes 10 Push to confirm the value and move to the next step in the Adjustment Procedure For Current calibration see Figure 4 for connections 11 374 375 376 Calibration Manual ghn50 eps Figure 4 Current Calibration Setup The calibration adjustment is complete When the adjustment is complete 1 Remove the Power Supply 2 Replace the batteries 3 Reattach the battery compartment door 4 Tighten the battery compartment door screw 12 Clamp Meter Cal
6. R IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES INCLUDING LOSS OF DATA ARISING FROM ANY CAUSE OR THEORY Since some countries or states do not allow limitation of the term of an implied warranty or exclusion or limitation of incidental or consequential damages the limitations and exclusions of this warranty may not apply to every buyer If any provision of this Warranty is held invalid or unenforceable by a court or other decision maker of competent jurisdiction such holding will not affect the validity or enforceability of any other provision Fluke Corporation Fluke Europe B V P O Box 9090 P O Box 1186 Everett WA 98206 9090 5602 BD Eindhoven U S A The Netherlands 11 99 To register your product online visit register fluke com Table of Contents Title Page Et OQUE ce Pon o o Saloy WIT OMIA 0 1 A Ihe M ee ee Plcctrical Specification bt ener oi PERDE pm Mechanical Specifications s susanne Environmental Specifications eeeeeeeeeeeseseseeeseenennennnnnnnnnnnnnnnnnnnnnnnnnnnnnenen Performance MEE A e ee Calibration AUS osa Required uocis Bee Adj stment Pros lu ner ee Mis AAA Ac Ba
7. age to the Product or to equipment under test e Remove batteries to prevent battery leakage and damage to the Product if it is not used for an extended period Besure that the battery polarity is correct to prevent battery leakage To change the batteries see Figure 5 1 Make sure the Product is OFF 2 Turn the Product over to access the battery compartment door screw 3 Use a flat head screwdriver to loosen the battery compartment door screw and lift off the battery compartment door 4 Replace the two AA batteries Reattach the battery compartment door 6 Tighten the battery compartment door screw 15 374 375 376 Calibration Manual fig11_12 eps Figure 5 Changing the Batteries User Replaceable Parts User replaceable parts are listed in Table 5 Table 5 User Replaceable Parts Fluke Part 2 3845988 Battery Door Assembly 3752958 Soft Case 16
8. ce Tests Test Calibrat Meter Reading Limit Switch Dub 374 375 376 Position Low 7 ves x x 103 V x eov eov soov som x x x soaov n 4 Ohms 540 Q x x x 5500 500 3000 x x x 29822 5400 0 x x x 500 5400 30K 2 is 15 e 29 82 30 18 KQ 54k Q sk 54 300 n Capacitance RE IX X fx zen 900 uF 894 0 uF 906 0 uF 5 x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 1 1 374 375 376 Calibration Manual Table 2 Performance Tests cont Test Calibrat Meter Reading Limit alibrator Position with 50 18 5 0Hz 891 0A 909 0 A turn Coil 50860 000 ii DC Amps x with 50 18 891 0A 909 0 A turn Coil x x O FLEX Probe with Simulation 750 mV 500 Hz 515 134 MODA 2903 023650 Hos oix o Probe l 6 A 440 Hz X 295 2 A p with 50 turn Coil Calibration Adjustment Required Equipment The equipment listed in Table 3 is required for calibration adjustment xx Table 3 Required Equipment Required Characteristics Recommended Model Calibrator 4 5 digit resolution Fluke 55xxA Calibrator Wired coil 50 turns 5500A C
9. d and removal from HAZARDOUS LIVE conductors is permitted DC Direct Current Do not apply to or remove from HAZARDOUS LIVE conductors Measurement Category III IEC Measurement Category IV CAT III equipment has protection against CAT IV equipment has protection transients in equipment in fixed equipment against transients from the primary installations such as distribution panels supply level such as an electricity feeders and short branch circuits and Meter or an overhead or underground lighting systems in large buildings utility service Note The Measurement Category CAT and voltage rating of any combination of test probe test probe accessory current clamp accessory and the Meter is the LOWEST rating of any individual component The Meter Clamp Meter Qir TRUE RMS E lt 53 Figure 1 The Meter Specifications Electrical Specifications AC Current via Jaw Range 374 and ds 600 0 A T E Ht 999 9 A PRESOIUNON o sea 0 1A PAC CUA UTC 2 5 digits 10 100 Hz 2 5 5 digits 100 500 Hz Crest Factor 50 60 Hz 3 500 A 375 and 376 only 2 5 600 1 42 1000 376 only Add 2 96 for C F gt 2 AC Current via Flexible Current Probe Rcgi m O 2500 A Resolution 3 4 and ee 0 1 A lt 1000 A 1 A lt 2500 A Cri P 0 1 x 999 9 A lt 2500 A tree o e TT 3 9o 5 digits
10. es the right to invoice Buyer for importation costs of repair replacement parts when product purchased in one country is submitted for repair in another country Fluke s warranty obligation is limited at Fluke s option to refund of the purchase price free of charge repair or replacement of a defective product which is returned to a Fluke authorized service center within the warranty period To obtain warranty service contact your nearest Fluke authorized service center to obtain return authorization information then send the product to that service center with a description of the difficulty postage and insurance prepaid FOB Destination Fluke assumes no risk for damage in transit Following warranty repair the product will be returned to Buyer transportation prepaid FOB Destination If Fluke determines that failure was caused by neglect misuse contamination alteration accident or abnormal condition of operation or handling including overvoltage failures caused by use outside the product s specified rating or normal wear and tear of mechanical components Fluke will provide an estimate of repair costs and obtain authorization before commencing the work Following repair the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges FOB Shipping Point THIS WARRANTY IS BUYER S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS O
11. ibration Adjustment Table 4 Adjustment Procedure Calibrator Output Position Uutpu 600 V 000 50 Hz x x x vemm em x DR e x mveen ew x x x m D x IE x xpo em x x x fev 4 O O s x Xx A T r l 1 X DC Volts ololo N l Tr l iilii lt n 4 ree x x x nn ew p DR Mii i i i X X X X 13 374 375 376 Calibration Manual Table 4 Adjustment Procedure cont Calibrator Output m Position 50 al brator Uutpu 5 Amps 50 Hz with 50 turn Coil 3 A 400 Hz with 50 turn Coil A x x x x gt INN N N Co T T l t x x i x x x x x x 14 Clamp Meter Maintenance Maintenance Clean the Product Caution To prevent possible damage to the Product or to equipment under test do not use abrasive cleaners They will damage the case To clean the Product use a cloth with a mild cleaning solution Battery Replacement Warning To prevent possible explosion fire or personal injury replace the batteries when the low battery indicator 4 shows to prevent incorrect measurements ACaution To prevent possible dam
12. ibration Manual Safety Information A Warning identifies conditions and actions that pose hazard s to the user A Caution identifies conditions and procedures that could cause Meter damage equipment under test damage or permanent loss of data Symbols used on the Product and in this manual are explained in Table 1 AWarning To prevent possible electrical shock fire or personal injury Use the product only as specified or the protection supplied by the Product can be compromised Examine the case before you use the Product Look for cracks or missing plastic Carefully look at the insulation around the terminals Do not measure current while the test leads are in the input jacks The battery door must be closed and locked before you operate the Product Remove all probes test leads and accessories before the battery door is opened Do not use test leads if they are damaged Examine the test leads for damaged insulation exposed metal or if the wear indicator shows Check test lead continuity Do not use the Product if it operates incorrectly Do not use the Product around explosive gas vapor or in damp or wet environments Use only type AA batteries properly installed in the Product case to power the Product Hold the Product behind the tactile barrier See Figure 1 1 Replace the batteries when the low battery indicator q 4 shows to prevent incorrect measurements Use only specified replaceme
13. nt parts Have an approved technician repair the Product Do not touch voltages gt 30 V ac rms 42 V ac peak or 60 V Do not apply more than the rated voltage between the terminals or between each terminal and earth ground Keep fingers behind the finger guards on the probes Connect the common test lead before the live test lead and remove the live test lead before the common test lead Do not work alone Clamp Meter Safety Information Use caution around bare conductors or bus bars To prevent electrical shock do not touch the conductor Comply with local and national safety codes Use personal protective equipment approved rubber gloves face protection and flame resistant clothes to prevent shock and arc blast injury where hazardous live conductors are exposed Disconnect power and discharge all high voltage capacitors before you measure resistance or continuity For the 374 and 375 do not measure ac dc current in circuits carrying more than 1000 V or 600 A with the Product Jaw For the 376 do not measure ac dc current in circuits carrying more than 1000 V or 1000 A with the Product Jaw Do not measure ac current in circuits carrying more than 1000 V or 2500 A with the Flexible Current Probe Do not apply the Flexible Current Probe around or remove from HAZARDOUS LIVE conductors Do not use the flexible current sensor if the inner contrasting insulation color is showing Take special care during fi
14. ttery Replacement sea User Replaceable Paris atari tia 374 375 376 Calibration Manual List of Tables Table Title Page l SDO r E 2 ae 3 EPA e 2 8 08 o A 4 Ns en 5 User Replaceable 5 lii 374 375 376 Calibration Manual List of Figures Figure Title Page l AAA PP 2 Posion san 3 Calibration ACH nee 4 Current Calibration SEID ee ee ee inne Changing the Batteries 374 375 376 Calibration Manual vi Introduction A AWarning Read Safety Information before you use the Product This manual explains the Calibration Adjustment for the 374 375 and 376 Clamp Meters the Product Please see the 374 375 376 Users Manual for usage information Contact Fluke To contact Fluke call one of the following telephone numbers e Technical Support USA 1 800 44 FLUKE 1 800 443 5853 e Calibration Repair USA 1 888 99 FLUKE 1 888 993 5853 e Canada 1 800 36 FLUKE 1 800 363 5853 e Europe 31 402 675 200 e Japan 81 3 3434 0181 e Singapore 65 738 5655 e China 86 400 810 3435 Anywhere in the world 1 425 446 5500 Or visit Fluke s website at www fluke com To register your product visit http register fluke com To see print or download the latest manual supplement visit http us fluke com usen support manuals 374 375 376 Cal
15. tting and removal of the Flexible Current Probe De energize the installation under test or wear Suitable protective clothing Do not operate the product with covers removed or the case open Hazardous voltage exposure is possible When batteries are changed ensure that the calibration seal in the battery compartment is not damaged If damaged the Product may not be safe for use Return the Product to Fluke for replacement of the seal Do not exceed the Measurement Category CAT rating of the lowest rated individual component of a product probe or accessory Measure a known voltage first to make sure that the Product operates correctly A Caution To prevent possible damage to the product or to equipment under test Use the correct terminals function and range for measurements Clean the case and accessories with a damp cloth and mild detergent only Do not use abrasives or solvents 374 375 376 Calibration Manual Table 1 Symbols AC Alternating Current Earth ground Do not dispose of this product as unsorted municipal waste Go to Fluke s website for recycling information A Hazardous voltage Conforms to European Union directives A Risk of Danger Important information See Ge Conforms to relevant North American Manual Sud Safety Standards a a Low battery when shown on 9 Examined and licensed Product Conforms to relevant Australian Services standards Application aroun
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