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Model 9711B Series

Multi-Tap DC Current Shunt

Technical Manual

NOTICE

The  contents  and  information  contained  in  this  manual  are  proprietary  to
Guildline  Instruments  Limited.    They  are  to  be  used  only  as  a  guide  to  the
operation  and  maintenance  of  the  equipment  with  which  this  manual  was
issued and may not be duplicated or transmitted by any means, either in whole
or in part, without the written permission of Guildline Instruments Limited.

TM9711B-A-00

6 November 2013

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Summary of Contents for 9711B Series

Page 1: ...rietary to Guildline Instruments Limited They are to be used only as a guide to the operation and maintenance of the equipment with which this manual was issued and may not be duplicated or transmitted by any means either in whole or in part without the written permission of Guildline Instruments Limited TM9711B A 00 6 November 2013 ...

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Page 3: ... 4 3 2 8 Minimum accuracy 3 4 3 3 Additional Applications of the Model 9711B 3 5 4 0 Calibration and Performance Verification 4 1 4 1 Introduction 4 1 4 2 Calibration Overview 4 1 4 3 Calibration Interval and Performance 4 1 4 4 Equipment and Standards Required for Calibration 4 2 4 5 Routine Calibration 4 3 4 6 Nominal Value Calibration Procedure 4 5 4 6 2 Calibration of 0 01 mA 10 k Ranges to 1 ...

Page 4: ... 6 November 2013 ii 5 0 Maintenance 5 1 5 1 Maintenance Inspection and Cleaning 5 1 5 1 1 Inspection 5 1 5 1 2 Cleaning 5 1 5 2 Troubleshooting 5 1 5 2 2 Short Circuit Troubleshooting 5 2 5 3 Replaceable Parts 5 2 ...

Page 5: ...Connections 3 2 Figure 3 3 Range Selector Plugs 3 2 Figure 3 4 Potential Terminals 3 3 Figure 5 1 9711B Schemtic Overview 5 6 LIST OF TABLES Table 4 1 List of Recommended Test Currents or Voltages For Resistance Values 4 4 Table 4 2 9711B Nominal Calibration Data Worksheet 4 8 Table 4 3 9711B Optional Calibration Data Worksheet 4 13 ...

Page 6: ...s guildline com Website is www guildline com 1 1 Warranty Guildline Instruments warrants its products to be free of defects in manufacture and normal operation for a period of two 2 years from the date of purchase except as otherwise specified This warranty applies only in the country of original purchase and only to the original purchaser who is also the end user Equipment which is defective or f...

Page 7: ... The customer or purchaser must complete all final claims with the carrier Regular charges will apply to non warranty service External service charges and expenses will be billed at cost plus handling 1 2 To Obtain Warranty or Calibration and Repair Service Returns and or Calibration and Repair Service Requests Telephone Fax and email addresses to contact Guildline are provided previously Guildlin...

Page 8: ...se death The 9711B DC Shunts are designed to work within operating specifications Applying more than the recommended current will damage the unit Inspect the 9711B for damage such as cracked connectors prior to use If the unit has a burned smell or smoke is visible during use discontinue use immediately If test equipment used with DC Shunts overloads or trips this could be a sign that the 9711B re...

Page 9: ... 10 0 01 10 1000 0 001 100 0 05 30 10 W 0 000 333 333 300 0 1 30 30 W Note 1 Calibrated in air at 23 1 o C referred to the unit of resistance as maintained by a National Metrology Institute and expressed as a deviation from nominal with a total uncertainty and coverage factor of k 2 Note 2 A traceable report of calibration stating the measured values and uncertainty is provided with each unit at t...

Page 10: ... still wider range of ambient temperatures The resistors are made of selected zeranin wire and are non inductively wound up to 1 ampere The unit consists of nine 9 shunts of the 4 terminal configuration Each shunt provides a 100 mV drop at the nominal rated current The maximum current rating is 140 of nominal for all ranges except the 100 A and 300 A ranges for which the maximum is 110 of the nomi...

Page 11: ...el One plug is inserted over the other in a vertical line For example if the range selected is 0 01 A insert the two plugs in the two receptacles directly over the engraved portion marked with the numeral 0 01 A for current and 10 Figure 3 3 Range Selector Plugs Common low Connector Used for all common inputs to 300 A and all ranges and ALL range plug settings 300 A High Current Connector Used for...

Page 12: ...ree i e both common binding posts must be connected in the same polarity Note 2 If the readout device is a low resistance milli voltmeter inaccuracies can result proportional to the current drain All potentiometers have a finite resistance so their use will result in some loss of accuracy due to circuit loading If a DVM is employed its input impedance should be checked to see that it is sufficient...

Page 13: ...lli voltmeter is multiplied by 3 and the decimal point arbitrarily fixed 3 2 7 Full Rated Accuracy Each shunt can be used at rated nominal current to full accuracy with no duty cycle limitations For the 100 A and 300 A ranges 30 minutes to 1 h minimum should be allowed for the meter readings to settle to due to thermal dissipation effects All other ranges should be stable within 15 min or less Not...

Page 14: ...itional Applications of the Model 9711B Each shunt can be employed as a separate 4 terminal standard resistor for measurements of resistance The operating procedure is identical to that described previously The circuit would include a resistance in series with the current connections rather than an instrument under test although it could include both if desired By measuring the voltage drop separa...

Page 15: ...t back within the nominal range The second optional method is to use the actual calibrated value of each range and use this characterized value vs the nominal value of the standard Using the same 1 value 0 1 A range above as an example Say this value drifted at a upward rate of 15 per year In approximately 7 years this unit will have drifted 105 or 5 greater than the nominal tolerance of 100 Rathe...

Page 16: ...nt and Standards Required for Calibration The following Resistance Standards and Test Equipment is required for calibration Standards and Equipment Required Complete 6625A Resistance Measurement System with 6623A 300A Range Extender Installed See Below for Alternative Acceptable Equipment Models Or Alternative Standards a Direct Current Comparator Resistance Bridge Acceptable Models Guildline Inst...

Page 17: ...es with least operational influence on the measurements it is recommended that customers use automation technologies such as Bridgeworks R or Bridgeworks C Software IEEE control and 6664X Series Low Thermal Scanners can be used for automation of measurements up to 2 A Calibration Notes Always check availability of equipment and standards prior to starting the calibration If the required equipment ...

Page 18: ...0 1 0 01 Adc 0 1 Adc 3 Calibrate in order minimum current to maximum current 0 01 0 001 Adc 0 01 Adc 3 Only 6622A Bridge Required No Range Extender needed for Remaining Tests Calibrate in order minimum current to maximum current 0 001 0 000 1 Adc 0 001 Adc 3 Only 6622A Bridge Required No Range Extender needed for Remaining Tests Calibrate in order minimum current to maximum current 0 000 1 0 000 1...

Page 19: ...ridge measurement cycle refer to user manuals for bridge record the UUT value under MEASURED VALUE on the worksheet d Unit value should be between the minimum and maximum values If not unit will require repair e Repeat for all currents listed for each test point Always start with lowest current minimum heat dissipation and work to highest current f Repeat Steps b through d for remaining values 4 6...

Page 20: ...h test point Always start with lowest current minimum heat dissipation and work to highest current 4 6 5 Calibration of 100 A 1 m Range a Common and Potential Cables should remain connected as before Disconnect the 10 A Current Cables and connect a cable capable of handling 300 A to the 100 A and Input Common Right side and to the 6623A 300 Range Extender 300 A output Potential Cables should remai...

Page 21: ...work to highest current Note Measurement Tips Consider the following when setting up the measurement Verify that the max voltage or current applied in the measurement will not exceed the specs for the UUT or the STD For the 100 A and 300A range permit a stbilization time of 30 minutes for the lower currents and minimum 1h for test currents 100A and higher Verify the reversal rate is appropriated f...

Page 22: ... Output 12 Month Tolerance 100 ppm CALIBRATION CURRENT ADC Lower Value Limit Measured Value Upper Value Limit 0 000 1 0 001 Ampere Output 12 Month Tolerance 100 ppm CALIBRATION CURRENT ADC Lower Value Limit Measured Value Upper Value Limit 0 0001 0 001 0 01 Ampere Output 12 Month Tolerance 100 ppm CALIBRATION CURRENT ADC Lower Value Limit Measured Value Upper Value Limit 0 001 0 01 0 1 Ampere Outp...

Page 23: ...re Output 12 Month Tolerance 100 ppm CALIBRATION CURRENT ADC Lower Value Limit Measured Value Upper Value Limit 1 10 100 Ampere Output 12 Month Tolerance 500 ppm CALIBRATION CURRENT ADC Lower Value Limit Measured Value Upper Value Limit 10 100 300 Ampere Output Nominal Value 0 000 333 333 12 Month Tolerance 1000 ppm CALIBRATION CURRENT ADC Lower Value Limit Measured Value Upper Value Limit 30 0 00...

Page 24: ...ent starting with lowest current first for the 300 A and after proper bridge measurement cycle refer to user manuals for bridge record the measured value under column h Calculate Actual Deviation and compare to Maximum Deviation Unit should be within maximum deviation values If not unit will require repair i Repeat for all currents listed for each 300 A test point Always start with lowest current ...

Page 25: ...ximum deviation values If not unit will require repair e Repeat for all currents listed for each test point Always start with lowest current minimum heat dissipation and work to highest current 4 7 4 Calibration of 1 A 100 m Range a Disconnect the 10 A Red Cable and connect a cable capable of handling 1 A to the 9711B 1 A Terminal and and range Extender current output Move the Input Common cable c...

Page 26: ...nts listed for each test point Always start with lowest current minimum heat dissipation and work to highest current f Repeat Steps b through d for remaining values Note Measurement Tips Consider the following when setting up the measurement Verify that the max voltage or current applied in the measurement will not exceed the specs for the UUT or the STD Verify the reversal rate is appropriated fo...

Page 27: ...LIBRATION OHMIC VALUE CURRENT CALIBRATION ACTUAL DEVIATION 2 MAXIMUM DEVIATION 3 30 100 300 Optional 100 Ampere Output Nominal Ohmic Value 12 Month Tolerance 1 500 ppm A B C D E CALIBRATION CURRENT ADC OHMIC VALUE LAST CALIBRATION OHMIC VALUE CURRENT CALIBRATION ACTUAL DEVIATION 2 MAXIMUM DEVIATION 3 10 100 10 Ampere Output Nominal Ohmic Value 12 Month Tolerance 1 100 ppm A B C D E CALIBRATION CUR...

Page 28: ...ION OHMIC VALUE CURRENT CALIBRATION ACTUAL DEVIATION 2 MAXIMUM DEVIATION 3 0 1 1 0 1 Ampere Output Nominal Ohmic Value 12 Month Tolerance 1 100 ppm A B C D E CALIBRATION CURRENT ADC OHMIC VALUE LAST CALIBRATION OHMIC VALUE CURRENT CALIBRATION ACTUAL DEVIATION 2 MAXIMUM DEVIATION 3 0 01 0 1 0 01 Ampere Output Nominal Ohmic Value 12 Month Tolerance 1 100 ppm A B C D E CALIBRATION CURRENT ADC OHMIC V...

Page 29: ...DEVIATION 2 MAXIMUM DEVIATION 3 0 000 1 0 000 01 Ampere Output Nominal Ohmic Value 100 12 Month Tolerance 1 100 ppm A B C D E CALIBRATION CURRENT ADC OHMIC VALUE LAST CALIBRATION OHMIC VALUE CURRENT CALIBRATION ACTUAL DEVIATION 2 MAXIMUM DEVIATION 3 0 000 1 Note 1 12 Month Specification is a drift spefication This is the maximum drift per year allowed If UUT has not been calibrated in last 12 mont...

Page 30: ...hunt box Physical movement of shunts can cause mounting stress and changes in resistance values 5 2 Troubleshooting 5 2 1 Steps for Trouble Shooting the 9711B 5 2 1 1 A visual inspection is most important Check to see if rear cover or panel is warped or distorted If it is the entire unit should be re calibrated at once 5 2 1 2 If the binding post heads on the front panel are broken they should be ...

Page 31: ... 3 Compare each resistor to a standard resistor 5 2 2 4 If tests above are negative the problem may be in the internal wiring or resistors in the shunt Each shunt can be tested separately for continuity without removing the rear vented cover by inserting the two plugs in the paired female receptacles for each range and using an ohmmeter between the 10 A MAX or 100 A MAX or 300 A MAX binding post a...

Page 32: ... 60 oz 17 g Part Number 30559 02 17 Manufacturer Guildline Instruments Cage Code 35939 Description Knob Assembly 3 8 16 300 A and Common Terminals Dimensions 1 8 1 9 Weight 1 8 oz 51 g Part Number 30559 01 17 Manufacturer Guildline Instruments Cage Code 35939 Description Knob Assembly 1 4 20 100 A Terminal Dimensions 1 5 1 4 Weight 0 72 oz 21 g Part Number 17749 01 12 Manufacturer Guildline Instru...

Page 33: ...ription Precisiouesn 1 Range Resistor 0 1 A Current Range Dimensions diameter Weight 1 8 oz 51g Part Number 17798 02 02 Manufacturer Guildline Instruments Cage Code 35939 Description Pecision 10 Range Resistor 0 01 A Current Range Dimensions Weight 1 62 oz 46g Part Number 17798 03 02 Manufacturer Guildline Instruments Cage Code 35939 Description Precision 100 Range Resistor 0 001 A Current Range D...

Page 34: ... 5 TM9711B A 00 6 November 2013 5 5 Part Number 17798 05 02 Manufacturer Guildline Instruments Cage Code 35939 Description Precision 10 k Range Resistor 0 000 01 A Current Range Dimensions 5 Weight 1 23oz 35g ...

Page 35: ...M9711B A 00 6 November 2013 5 6 Figure 5 1 9711B Schemtic Overview 10 000 1 000 100 10 1 0 0 000 333 33 0 000 666 667 10 A 100 A 1 0 A 0 1 A 0 01 A 0 001 A 0 00001 A 0 0001 A 300 A P OTENTIAL 300A COM 100A COM 10A ...

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