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Section 2

OM6624CT-3000-5-00

11 May, 2016

2-11

Figure 2-5 : 6624CT-3000 with Primary Current Shunt Connections

P1

P2

C1

C2

Voltmeter on

DUT Shunt

P2

P1

C2

C1

Voltmeter on

REF Shunt

Current Source

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Содержание 6624CT-3000

Страница 1: ... 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 OM6624CT 3000 A 00 11 May 2016 ...

Страница 2: ......

Страница 3: ...3 2 Balance 2 7 2 3 3 3 A Burden 2 7 2 3 4 150 mA Burden 2 8 2 3 5 Range Switch 2 8 2 4 6624CT 3000 REAR VIEW 2 9 2 4 1 Line Input Connectors 2 9 2 4 2 Control Connector 2 9 2 4 3 DCCT 3000 Connector 2 9 2 4 4 CS1000 Connector 2 9 3 QUICK MEASUREMENT GUIDE 3 1 3 1 MEASUREMENT OPERATION GUIDE 3 1 3 1 1 Current Measurement all Ranges 3 1 3 1 2 Calculation of the Unknown Shunt Resistance 3 3 3 1 3 Re...

Страница 4: ...000 4 2 4 3 2 Measurement of the Potentials on the Resistors 4 2 4 3 3 Calculation of the Range Ratios 4 3 5 TROUBLESHOOTING AND MAINTENANCE 5 1 5 1 INTRODUCTION 5 1 5 1 1 Model 6623A 3S Controller Fault Indications 5 1 5 1 2 Maintenance 5 1 6 APPENDICES 6 1 6 1 GENERAL SPECIFICATIONS 6 1 6 2 GENERAL SPECIFICATIONS continued 6 2 ...

Страница 5: ... 1 1 MODEL 6624CT 3000 BLOCK DIAGRAM 1 3 FIGURE 2 1 LINE VOLTAGE SELECTOR 2 2 FIGURE 2 2 6624CT 3000 FRONT VIEW 2 7 FIGURE 2 3 6624CT 3000 REAR VIEW 2 9 FIGURE 2 4 6624CT 3000 CONNECTIONS 2 10 FIGURE 2 5 6624CT 3000 WITH PRIMARY CURRENT SHUNT CONNECTIONS 2 11 ...

Страница 6: ...OM6624CT 3000 5 00 11 May 2016 iv LIST OF TABLES TABLE 2 1 FUSE RATINGS 2 2 TABLE 3 1 6624CT 3000 TEST SETUPS 3 4 TABLE 6 1 GENERAL SPECIFICATIONS 6 1 TABLE 6 2 GENERAL SPECIFICATIONS CONTINUED 6 2 ...

Страница 7: ...tion ratios of 100 1 500 1 and 1 000 1 and allow for measurements to be performed up to a maximum of 3000 amperes The full scale output range of 3 A is provided at a pair of binding post terminals on the front panel of the control chassis Three primary current ranges are provided 300 A 1500 A and 3000 A A second pair of binding post terminals is provided which provides an additional 20 1 reduction...

Страница 8: ...ce shown in Figure 1 1 in which the primary window carries the direct current input Modulator and detector windings are used for the detection of DC flux in the core Switch selectable secondary windings of 100 500 and 1000 turns provide the means to balance the ampere turns in the transformer core When the primary and secondary ampere turns are equal and opposite there is zero resultant DC flux in...

Страница 9: ...er Demodulator Slave PSU Flux Detector Magnetic Modulator 6624CT 3000 Current Transformer Current Comparator Toroid 3000A 1000T 500T switchable 100T Ns Servo Amplifier Demodulator Slave PSU 6623A 3S Control Unit 1000A Current Source 1000A Current Source 1000A Current Source Nx 1T P2 P1 C2 C1 Voltmeter Voltmeter Flux Detector Magnetic Modulator 66259 Programmable Current Drive ...

Страница 10: ...i Operation Manual OM6624CT 3000 ii Two Spare Fuses 1 A T GPN 099 21000 iii Two Spare Fuses 2 A T GPN 099 22000 iv Three SCW Leads 2 m GPN 20236 04 02 v One 12 conductor 1 5 m connection cable GPN 31482 01 21 vi AC Line Cord GPN 250 04030 vii Two Shorting Links GPN 225 02090 viii Termination Connector GPN 31061 02 09 ix Extender Cable 2 0 m GPN 20212 04 02 2 1 2 Power Voltage Selection The 6623A 3...

Страница 11: ... TIME DELAY TYPE 100 V 120 V 220 V 240 V 2 A 250 V T 2 A 250 V T 1 A 250 V T 1 A 250 V T Table 2 1 Fuse Ratings 100V 120V 220V 240V 100V 120V 220V 240V EXPOSE LINE SELECTOR SLIDER REMOVE SELECTOR 120V SHOWN PRY HERE TO REMOVE COVER ROTATE SELECTOR AND REPOSITION SLIDER TO DESIRED LINE INPUT 240V SHOWN AND REINSERT REPLACE COVER DISCONNECT POWER Figure 2 1 Line Voltage Selector ...

Страница 12: ...t to the circular connector on the back panel of the 6623A 3S marked CONTROL The 66259 Extender Control Unit should have the cable attached to the connector marked EXTENDER Ensure that a termination plug is connected to the connector marked BRIDGE on the 66259 unit Note that when the Model 66259 is not used a termination plug GPN 31061 02 09 must be connected to the CONTROL connector on the 6623A ...

Страница 13: ...able heavy current cables Continue to connect the other end of the cables across a shunt that is to be measured or to the OUT buss of the CS1000 units such that a complete circuit is provided Where the CS1000 units are not used a separate current source must be setup to supply a test current through the window of the 6624CT 3000 High Current DC Transformer Unit m If it is to be utilized turn on th...

Страница 14: ... test current A 1 ohm or less Reference Shunt such as a Guildline 9230A 10 1 must be installed on the 6623A 3S front panel terminals marked 3 A BURDEN and a shorting link on the 6623A 3S terminals marked 150 mA BURDEN Note that for proper setup and operation of the 66259 refer to the 66259 Operation Manual Refer to Figure 2 4 for interconnection details Using the measurement set up procedure below...

Страница 15: ...function on the DVM will be required to smooth out small variations in the current source output Step 5 Set a negative nominal test current of 100 A Step 6 Observe and record the voltage on the potential terminals as displayed on the DVM after the test current has stabilized for a few minutes Step 7 Divide the absolute value of the mean of the two voltages and divide the result by the known calibr...

Страница 16: ...fault condition in the servo amplifier of the current comparator module is detected indicating a comparator imbalance condition may exist or there is an open circuit at one of the output terminals A small offset is a satisfactory indication that a balance condition exits on the DCCT 3000 Transformer Unit Note Do not operate the system if the meter remains pegged off scale as this may damage the co...

Страница 17: ...eference shunt If a shunt is not used a shorting link must be installed for proper operation The full scale output is 150 mA 2 3 5 Range Switch The Range Switch located on the 6624CT 3000 High Current DC Transformer allows for selection of 1000 1 500 1 and 100 1 current transformation ratios with full scale values of 3000 1500 and 300 A respectively ...

Страница 18: ...he Model 66259 Control Unit The 66259 provides program signals for the CS1000 Current Sources and the 6623A 3S tracking of the current comparator 2 4 3 DCCT 3000 Connector The DCCT 3000 Connector is a 16 pin circular connector which is used to connect the necessary signals to the Model 6624CT 3000 Current Transformer CONTROL connector Only 12 of the pin connections are utilized 2 4 4 CS1000 Connec...

Страница 19: ...Section 2 OM6624CT 3000 5 00 11 May 2016 2 10 Figure 2 4 6624CT 3000 Connections P2 P1 C2 C1 Voltmeter on REF Shunt Current Source ...

Страница 20: ...Section 2 OM6624CT 3000 5 00 11 May 2016 2 11 Figure 2 5 6624CT 3000 with Primary Current Shunt Connections P1 P2 C1 C2 Voltmeter on DUT Shunt P2 P1 C2 C1 Voltmeter on REF Shunt Current Source ...

Страница 21: ...t is only required that a reference shunt of known resistance be connected on one of the Burden output terminals The 3 A Burden terminals are limited to a shunt resistance of 1 ohm or less while the 150 mA Burden terminals are limited to a maximum of 10 ohms although less is preferable Notes It is essential that a shorting link is used on the burden output terminals of the 6623A 3S that are not us...

Страница 22: ... the 6623A 3S moves to the right or left side initially then returns to the centre line within the graduation lines of the meter A small offset is a satisfactory indication that a balance condition exits on the 6624CT 3000 Transformer Unit Step 7 Increase the test current to the desired magnitude and observe that the meter indicator moves to the right or left side initially then returns to the cen...

Страница 23: ...current ranges Note that the current on the 150 mA Burden terminals is 1 20 of that on the 3 A Burden terminals such that the ratio is 20 times of that stated on the 6624CT 3000 range switch 3 1 4 Checks and Precautions Start with a test current of 1 10 of the value to be measured and increase the current slowly to the desired value Verify that the meter on the 6623A 3S does not stay off scale whe...

Страница 24: ...3000 1000 1 20 000 1 3 150 2000 3000 1000 1 20 000 1 2 100 1000 3000 1000 1 20 000 1 1 50 1500 1500 500 1 10 000 1 3 150 1000 1500 500 1 10 000 1 2 100 500 1500 500 1 10 000 1 1 50 300 1500 500 1 10 000 1 0 6 30 300 300 100 1 2 000 1 3 150 200 300 100 1 2 000 1 2 100 100 300 100 1 2 000 1 1 50 50 300 100 1 2 000 1 0 5 25 Table 3 1 6624CT 3000 Test Setups ...

Страница 25: ...based on the known ratio of these shunt resistors 4 2 TEST EQUIPMENT REQUIRED Test equipment of equivalent performance may be substituted from the list provided Description Model DC Resistance Standard Guildline 9230A 10 1 DC Current Shunt Standard Guildline 9230A 300 0 001 100 A DC Current Source Guildline CS1000 Current Source Controller Guildline 66259 Temperature Controlled Oil Air Bath Guildl...

Страница 26: ... the Control circular connector on the 6623A 3S if the 66259 Extender Control Unit is not used 6 Turn on the 6623A 3S DC Current Transformer Controller then turn on the Current Source but do not yet apply any test current 7 Observe that the meter indicator on the 6623A 3S initially moves to the right or left then returns to the centre line within the graduation lines of the meter A small offset is...

Страница 27: ...bsolute values of the positive and negative test current potentials on the 1 ohm resistance standard Rs Rp is the ratio of the 1 ohm resistance standard to that of the 0 001 ohm current shunt 4 Repeat the steps of 4 3 2 and 4 3 3 above for the 500 1 and 100 1 ranges of the 6624CT 3000 5 Record the results and verify that the ratios as calculated are within 10 parts in 106 of the nominal ratios 6 I...

Страница 28: ...p or an actual circuit failure Under extreme unbalance conditions the RED Power indicator may dim In this case it is important to turn off the test current and turn off the 6623A 3S to avoid damage to the electronic circuits Check that a shorting link is installed on the unused Burden terminals and a termination plug is installed on the Control connector on the 6623A 3S if the Model 66259 Extender...

Страница 29: ...0 VAC Line Frequency 50 5 or 60 5 Hz Control Unit Weight 28 12 7 lbs kg Control Unit Dimensions Rack Model D 500 W 480 H 132 mm D 19 7 W 18 9 H 5 2 in Control Unit Dimensions Bench Model D 500 W 442 H 147 mm D 19 7 W 17 4 H 5 8 in Transformer Unit Weight 55 25 lbs kg Transformer Unit Dimensions D 161 W 575 H 565 2 mm D 6 33 W 22 63 H 22 25 in Table 6 1 General Specifications NOTE 1 The 6623A 3S DC...

Страница 30: ...00 1 Transformation Ratios 0 15 A Output 20 000 1 10 000 1 2 000 1 Transformation Ratio Accuracies 10 ppm Linearity 0 1 ppm of full scale Temperature Coefficient 0 1 ppm C Warm up time to full rated accuracy 5 Minutes Test Current Ranges 1000 1 Range 500 1 Range 100 1 Range 3000 1500 300 A A A 20 000 1 Range 10 000 1 Range 2 000 1 Range 3000 1500 300 A A A Table 6 2 General Specifications continue...

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