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Fluke A40B, Instruction Manual

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Fluke A40B Instruction Manual Download Page 19

 

Precision AC Current Shunt Set 

 

Operating Information 

11 

1

1

2

5

6

3

4

2

7

3

Front

Bottom

Rear

Top

Active Shunt (1 mA)

Passive Shunt (100 mA)

 

fim005.eps 

Figure 2. Features and Connectors 

Summary of Contents for A40B

Page 1: ...Specifications are subject to change without notice All product names are trademarks of their respective companies A40B Precision AC Current Shunt Set Instruction Manual Via Acquanera 29 22100 Como t...

Page 2: ...e 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 ris...

Page 3: ...erating Environment 7 Storage and Transit Environments for models other than the 1 mA Current Shunt 7 Additional 1 mA Current Shunt Specifications 7 Preparing for Operation 8 Unpacking and Inspecting...

Page 4: ...e Fluke Calibration Method 24 Recommended Tools and Equipment 25 System Calibration for AC DC Difference 25 TVC Sensitivity Characterization 26 UUT AC DC Difference Measurement Sequence and Calculatio...

Page 5: ...14 5 Typical Loading Effect of an 8508A 2 V ACV Range 15 6 Estimating the Uncertainty of a 5790A Measurement 17 7 Sample Calculation of Measured Current 17 8 Single Junction Thermal Voltage Converter...

Page 6: ...A40B Instruction Manual iv...

Page 7: ...rcuit Using a Reference Shunt Resistor to Determine Source Current 20 6 Sources of Error in AC Measurements 23 7 The Fluke Calibration System 24 8 Calibrating Gain Difference 25 9 Characterizing Sensi...

Page 8: ...A40B Instruction Manual vi...

Page 9: ...nt Shunts or equipment to which it is connected A XW Warning statement identifies conditions or practices that could result in injury or death XW Warning To avoid electric shock personal injury or dea...

Page 10: ...rent Shunts use only specified replacement parts Do not dispose of batteries in fire Do not heat deform solder dissemble or modify the batteries If batteries are removed from the shunt ensure they are...

Page 11: ...t Shunts comprise the set They are as follows One boxed active shunt 1 mA Three boxed passive shunts 10 mA 20 mA 50 mA Five small size coaxial shunts 100 mA 200 mA 500 mA 1 A 2 A Three medium size coa...

Page 12: ...4 24 200 mA 4 20 26 26 26 26 500 mA 1 6 21 27 27 27 28 1 A 0 8 21 27 28 28 31 2 A 0 4 21 27 30 30 48 5 A 0 16 21 31 32 40 71 10 A 0 08 26 37 60 61 92 20 A 0 04 26 43 52 70 113 50 A 0 016 32 55 80 81 1...

Page 13: ...4 18 4 5 26 5 A 0 16 250 9 9 18 4 5 30 10 A 0 08 250 15 18 4 5 65 20 A 0 04 250 14 18 4 5 78 50 A 0 016 250 24 18 4 5 105 100 A 0 008 250 28 18 4 5 105 1 Stability specification combines long term cha...

Page 14: ...d Current Shunt Nominal Current Maximum Current 5 Seconds 1 Maximum Sustained Current 2 Shunt Nominal Current Maximum Current 5 Seconds 1 Maximum Sustained Current 2 1 mA 3 mA 2 mA 3 1 A 3 9 A 1 3 A 1...

Page 15: ...perature and Humidity to maintain performance 1 5 C to 45 C 15 to 80 RH Non operating Altitude 0 m to 12 000 m 1 Storage at extremes of temperature or humidity will cause a temporary change of shunt r...

Page 16: ...ckaging Description Quantity A40B Case Transit storage case for the A40B Current Shunts 1 Packing List of Items Includes the serial number of the Current Shunts 1 Current Shunts one boxed active shunt...

Page 17: ...environmental specifications described earlier in the General Specifications Storage outside these conditions may reduce the battery life of the 1 mA shunt or cause a temporary change in the resistanc...

Page 18: ...damaged by misuse or mating with out of tolerance N type male connectors The center pins of male N type connectors are prone to moving particularly when assembled onto cables If a center pin on an N...

Page 19: ...Precision AC Current Shunt Set Operating Information 11 1 1 2 5 6 3 4 2 7 3 Front Bottom Rear Top Active Shunt 1 mA Passive Shunt 100 mA fim005 eps Figure 2 Features and Connectors...

Page 20: ...normal because of contact resistance If the connectors are not fully tightened they will get hot enough to burn skin and damage the shunt W Caution To avoid pin damage to N Type connectors on the Cur...

Page 21: ...re designed to operate in a controlled environment such as calibration and measurement laboratories Temperature and humidity outside specified storage and transit environment may affect their performa...

Page 22: ...tput Shunt Resistor Device Input Z feh004 eps Figure 3 Loading Effect of the Measurement Device Output Voltage Measurement Using a Fluke 5790A The typical input impedance of a 5790A input 1 or 2 is 10...

Page 23: ...irectly Table 5 shows the loading effect of the 8508A on Current Shunts in the range of 1 mA to 1000 mA Table 5 Typical Loading Effect of an 8508A 2 V ACV Range DC 1 kHz 10 kHz 30 kHz 100 kHz Current...

Page 24: ...so for the best accuracy allow the shunt temperature to stabilize for 100 minutes after charging completes 4 Remove power from the circuit under test and connect the input of the Current Shunt in ser...

Page 25: ...to reliably confirm this level of performance Table 6 Estimating the Uncertainty of a 5790A Measurement Error Component Value ppm Distribution Divisor Value at k 1 Squared Value Standard deviation of...

Page 26: ...current being measured To measure the same current level at a different frequency calculate a new value for m and enter the new value into the 8508A m store The z value remains the same Theory of Oper...

Page 27: ...the other side of the struts and end PCB to the input connector The voltage across the resistor is carried by the strut to the dual PCB end B and C in Figure 4 and to the output connector The parallel...

Page 28: ...of Calibration Methods Current Shunts can be used in AC DC difference or absolute AC or DC measurements This requires that both AC flatness and DC resistance performance are calibrated Both AC and DC...

Page 29: ...mmon mode current Maximum input voltage is 0 45V Appropriate series resistor is required to increase input voltage capability Square law response offers poor amplitude linearity Nanovoltmeter or poten...

Page 30: ...rity Not as sensitive to local environment as TVC Can do AC DC difference transfer 1 Common mode errors are the biggest source of error for mains powered devices DC Considerations Note that the impeda...

Page 31: ...e extent The temperature coefficient of the Current Shunt causes a change in its resistance value Careful selection of equipment Allow all elements in the system to stabilize at normal operating tempe...

Page 32: ...the UUT circuit Note the connection of the detector in the upper circuit In this configuration CGu is driven by the source current reducing the effect of common mode errors associated with the Refere...

Page 33: ...del Minimum Use Specifications Multifunction Calibrator Fluke 5720A 0 to 10 volts DC to 100 kHz Transconductance Amplifier Clarke Hess 8100 100 A 100 kHz Precision AC Current Shunt Set A40B Calibrated...

Page 34: ...ure 9 shows the characterization sequence where Vin is the setting on the 5720A Vin_1 nominal 500 ppm Vin_2 nominal 500 ppm Vin_3 nominal 500 ppm Vout_1 2 and 3 are the voltages reported by the measur...

Page 35: ...de of VDC STD and VDC STD VACUUT average of VACUUT 1 and VACUUT 2 VACSTD average of VASTDT 1 and VACSTD 2 Apply AC signal Initial Delay VACUUT_1 VACSTD_1 Apply DC signal Delay Apply DC signal Delay Ap...

Page 36: ...ltage average of forward and reverse DC current UUT Gain sensitivity of the UUT measurement system STD Gain sensitivity of the Reference Standard measurement system Current Source DC Noise From some t...

Page 37: ...before replacing the batteries All other repair and or parts replacement should be performed at a Fluke Service Center See Contacting Fluke earlier in this manual to find the location nearest you Not...

Page 38: ...To remove the binding post A a Remove the nut and washers from the back of the post B and b Pull the post out and away from the end plate c Catch and save the spacer C as the post is removed 2 To remo...

Page 39: ...eat both solder removal steps until both the base and the center pin are free 5 Remove excess solder from the connector pad on PCB A 6 Mount the new connector to the Current shunt with the original sc...

Page 40: ...both solder removal steps until both the base and the center pin are free 5 Remove excess solder from the connector pad on PCB B and C 6 Mount the new connector to the Current Shunt with the original...

Page 41: ...Shunt 1 A Shunt 2 A Shunt 5 A Shunt 10 A Shunt 20 A Shunt 50 A Shunt 100 A Shunt 3275992 3276007 3276018 3276029 3276034 3276041 3276052 3276065 3276076 3276083 1 1 1 1 1 1 1 1 1 1 H2 End Plate Rear...

Page 42: ...A40B Instruction Manual 34 Via Acquanera 29 22100 Como tel 031 526 566 r a fax 031 507 984 info calpower it www calpower it...

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