Guildline 9711B Series User manual

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

TM9711B-A-00
6 November 2013
i
Table of Contents
1.0 Introduction 1-1
1.1 Warranty 1-1
1.2 To ObtainWarrantyorCalibrationandRepairService 1-2
1.2.1 USAWarrantyReturnAddress 1-2
1.2.2 ReturnsAllOtherCountries 1-3
1.3 SafetyInformation 1-3
2.0 9711BSpecifications 2-1
2.1 UncertaintySpecifications 2-1
2.2 GeneralSpecifications 2-1
3.0 Overviewofthe 9711B 3-1
3.1 General 3-1
3.2 OperatingInstructions 3-1
3.2.1 MaximumCurrent 3-1
3.2.2 CurrentInputTerminals 3-2
3.2.3 RangeSelectorPlugs 3-2
3.2.4 PotentialTerminals 3-3
3.2.4 10AmpereMeasurementsandBelow 3-3
3.2.5 Measurements above10Ampere 3-3
3.2.6 mVOutput 3-4
3.2.7 FullRatedAccuracy 3-4
3.2.8 Minimumaccuracy 3-4
3.3 AdditionalApplicationsoftheModel9711B 3-5
4.0 Calibrationand PerformanceVerification 4-1
4.1 Introduction 4-1
4.2 CalibrationOverview 4-1
4.3 CalibrationIntervalandPerformance 4-1
4.4 EquipmentandStandardsRequiredforCalibration 4-2
4.5 RoutineCalibration 4-3
4.6 NominalValueCalibrationProcedure 4-5
4.6.2 Calibrationof0.01mA(10k )Rangesto1A(0.1 Ranges) 4-5
4.6.3 Calibrationof1 A (100m )Range 4-5
4.6.4 Calibrationof10 A (10m )Range 4-6
4.6.5 Calibrationof100A(1m )Range 4-6
4.6.6 Calibrationof300A(0.333333m )Range 4-6
4.7 OptionalCalibrationProcedure(DriftVerification) 4-10
4.7.1 Calibrationof300A(0.333333m )Range 4-10
4.7.2 Calibrationof100A(1m )Range 4-10
4.7.3 Calibrationof10 A (10m )Range 4-11
4.7.4 Calibrationof1 A (100m )Range 4-11
4.7.5 Calibrationof0.1A andbelow(1 )Ranges 4-12

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5.0 Maintenance 5-1
5.1 Maintenance,InspectionandCleaning 5-1
5.1.1 Inspection 5-1
5.1.2 Cleaning 5-1
5.2 Troubleshooting 5-1
5.2.2 ShortCircuitTroubleshooting 5-2
5.3 ReplaceableParts 5-2

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LIST OF FIGURES
Figure3-1:9711BCurrentTerminalConnections 3-1
Figure3-2:9711BCurrentTerminalConnections 3-2
Figure3-3:RangeSelectorPlugs 3-2
Figure3-4:PotentialTerminals 3-3
Figure5-1:9711BSchemticOverview 5-6
LIST OF TABLES
Table4-1:ListofRecommendedTestCurrentsorVoltagesForResistance Values 4-4
Table4-2: 9711BNominalCalibrationDataWorksheet 4-8
Table4-3: 9711BOptionalCalibrationDataWorksheet 4-13

Section 1
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1-1
1.0 INTRODUCTION
This manual provides an overview of the 9711B DC Multi-Tap Current Shunt and also contains the
necessary information required to perform a calibration or verification test. General product
information,productdescriptionandperformancespecificationsarealsoincluded.
The phone number in the USA and Canada to obtain Product Support, Calibration Service or
ReplacmentPartsis(800)310-8104.
TocontactGuildlineInstruments,thefollowinginformationisprovided.
USAandCanadaTelephone: [phone]
USAandCanadaFax:1-613-283-6082
OutsideUSandCanadaTelephone: +[0][1]613283-3000
OutsideUSandCanadaFax: +[0][1]613283-6082
YoucanalsocontactGuildlineInstrumentsLimtedviatheirEmail orWebsites.
Emailis: [e-mail]
Websiteis: 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 fails within the warranty period, will be repaired
orreplacedatourfactorywithoutchargeatthediscretionofGuildlineInstruments.
In addition, systems engineered by Guildline Instruments are warranted to be free of defects in
overall system operation for a period of two (2) years from the date of receipt by the original
purchaser.
Third party system components purchased by Guildline carry the warranty of the original equipment
manufacturer and will be accepted for claim by Guildline Instruments at our factory only after
warrantyauthorizationbytheoriginalmanufacturer.

Section 1
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1-2
LimitationofWarranty
Warranty coverage does not apply to equipment which has failed due to misuse, neglect, accident or
abnormal conditions of operation or if modifications or repairs have been made without prior
authorizationofGuildlineinstruments.
Temperatureprobesarenotwarrantedagainst failureduetomechanicalshock.
Fuses,lampsandnon-rechargeablebatteriesarenotwarrantedagainstbreakage.
DamageinShipmenttoOriginalPurchase
Instrument(s) should be thoroughly inspected immediately on receipt for visible damage. Any
damage should be reported to the carrier and further inspection and operational tests should be
carried out if appropriate to determine if there is internal damage. Contact Guildline Instruments
beforereturningforrepair. The customerorpurchasermustcomplete allfinalclaimswiththecarrier.
Regular charges will apply to non-warranty service. External service charges and expenses will be
billedatcostplushandling.
1.2 To Obtain Warranty or Calibration and Repair Service
Returns and/or Calibration and Repair Service Requests. Telephone, Fax and email addresses to
contactGuildlineareprovidedpreviously.
Guildline Instruments will pay for all warranty costs including shipping to and from the original
shipmentpoint. However,if the instrumentis purchased within one country and shipped to another,
Guildlinewillonlypay forshipping toand fromtheoriginalshiptocountryor customerpoint.
1.2.1 USA Warranty Return Address
USA Customers should use the following address to return instruments for warranty service or
calibrationsupport.
Guildline Instruments Limited
C/O AN Deringer
800 Proctor Avenue
Ogdensburg, NY 13669
Mark on the outside of the box:
RMA # _____________
Model#_____________
Serial#_____________

Section 1
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1-3
1.2.2 Returns All Other Countries
Forallothercountries,includingCanadapleaseshipto:
Guildline Instruments Limited
21 Gilroy Street, PO Box 99
Smiths Falls, ON K7A 4S9
Mark on the outside of the box:
RMA # _____________
Model#_____________
Serial#_____________
1.3 SafetyInformation
WARNING: During usage and calibration high voltages or high currents may be
present. Use caution when working above 40 Volts DC or currents above 1mA. Such
voltagesorcurrentscancausedeath.
The 9711B DC Shunts are designed to work within operating specifications. Applying more than the
recommendedcurrentwilldamagetheunit.
Inspect the 9711B for damage such as cracked connectors prior to use. If the unithasa burned smell
orsmokeisvisibleduringuse,discontinueuse immediately.
If testequipmentusedwith DC Shunts overloads or trips, this couldbe a sign that the 9711B requires
repair.
Inspect all test leads used with the Multi-Tap DC Current Shunt for damaged insulation or exposed
metal. Checkalltestleadsforcontinuity.
Ensurealltestleadsare correctlyconnectedpriortoapplyingcurrentorvoltage.
DonotuseMulti-tapDCCurrentShuntsaroundexplosivegas,vaporor dust.

Section 2
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2-1
2.0 9711B SPECIFICATIONS
2.1 Uncertainty Specifications
The specifications apply from Full Rate Current down to 10 % of the full rated current. For example the
300 A Range can be used from 300 A down to 30 A or the 100 A Range can be used down to 10 A.
Ensurecurrentcablesused canhandlethefullrated current.
Resistance
( )
FullRated
CurrentRange
(A)
1YearAccuracy1,2
(%)
Temperature
Coefficient
( /0C)
PowerDissipation
atRatedCurrent
(mW)
10,000
0.0001
±0.01
5
0.001
1,000
0.0001
±0.01
5
0.01
100
0.001
±0.01
5
0.1
10
0.01
±0.01
5
1
1
0.1
±0.01
5
10
0.1
1
±0.01
10
100
0.01
10
±0.01
10
1000
0.001
100
±0.05
30
10W
0.000333 333
300
±0.1
30
30W
Note1: Calibrated in air at 23 ± 1 oC referred to the unit of resistance as maintained by a National Metrology Institute, and expressed as a
deviationfromnominalwithatotaluncertaintyandcoveragefactorofk=2.
Note2: A traceable report of calibration stating the measured values and uncertainty is provided with each unit at test currents of 1/10 of
ratedcurrentandfullratedcurrenttoamaximumof100Aandaminimum of0.1mA,
2.2 General Specifications
GENERALSPECIFICATIONS
Environmental
Temperature
Humidity
Operating
5oCto38oC
40oFto100oF
<70% RHnon-condensing
Storage
-20oCto55oC
-40oF to131oF
<90% RHnon-condensing
ExteriorDimension(Rack
Mount)
222mm(H)
482mm(W)
183mm(D)
13.6kg
8.7" (H)
19"(W)
7.2" (D)
30 lbs

Section 3
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3-1
3.0 OVERVIEW OFTHE 9711B
3.1 General
The Model 9711B is a self-contained 9 range, 4 terminal shunt, for precision current measurements
up to 300 A. The design optimizes a number of important factors such as the effects of self-heating,
temperaturecoefficient,size,weight,easeofoperationandtotalmeasuringrange.
It provides wide range precise current measuring capability when used with a potentiometer or
digitalvoltmeterasareadout.
The shunt resistors are mounted in air to minimize size and weight, yet self heating is a negligible
source of error from 20 oC to 30 oC. Self-heating has only a small effect for a 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
shuntprovidesa 100 mVdrop at thenominal rated current. The maximum current rating is 140 % of
nominalforallrangesexceptthe100A and300Aranges,forwhichthemaximum is
110% of thenominalcurrentrating.
Figure3-1:9711BCurrentTerminalConnections
3.2 Operating Instructions
3.2.1 Maximum Current
Determine the maximum current that will be measured. If maximum current to be measured is
unknown, good instrumentation practice wouldbe to approximate it at a value thatis certain not to
beexceeded.
As an example, if the current is thought to be between 100 A and 120 A, then the connections
shouldmemadetothe300A terminalsforthemeasurement.