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Guildline 6623A-4000 Operation Manual

High current range extenders
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Operation Manual
For The
6623A-4000/5000/6000
High Current Range Extenders
www.guildline.com
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.
OM6623A-4_5_6,000-B1-00
01 September 2021

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  • Page 1 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.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ....................... 1-1 1.1. SCOPE ................................1-1 1.2. GENERAL DESCRIPTION ..........................1-1 1.3. OVERVIEW ..............................1-2 1.4. PRINCIPLE OF OPERATION ........................1-2 INSTALLATION ......................2-1 2.1. PRELIMINARIES ............................2-1 2.1.1. Unpacking ............................... 2-1 2.1.2. Power Voltage Selection ..........................2-1 2.1.3.
  • Page 4 VERIFICATION AND CALIBRATION ..............5-1 5.1. RATIO ACCURACY VERIFICATION ......................5-1 5.1.1. Purpose ................................5-1 5.2. TEST EQUIPMENT REQUIRED ........................5-1 5.3. PROCEDURE ..............................5-2 5.3.1. PRELIMINARY MEASUREMENT OF THE 9230A-100-0.01Ω SHUNT ..........5-2 5.3.2. VERIFICATION OF THE x400-30A RATIO OF THE 6623A-6000 ............5-2 5.3.3.
  • Page 5 LIST OF FIGURES FIGURE 1-1 : MODEL 6623A-6000 BLOCK DIAGRAM ..................1-3 FIGURE 2-1 : INPUT FUSE ACCESS DCC6000 ....................... 2-2 FIGURE 2-2 : 6623A-6000 FRONT VIEW ........................ 2-11 FIGURE 2-3 : 6623A-6000 REAR VIEW ........................2-13 FIGURE 2-4 : REAR PANEL CONNECTIONS – 6623A-10, X20-3A RANGE ........... 2-15 FIGURE 2-5 : REAR PANEL CONNECTIONS –...

  • Page 6: List Of Tables

    LIST OF TABLES TABLE 2-1 : FUSE RATINGS ............................2-2 TABLE 5-1 : TEST CURRENT CABLE SIZE REQUIREMENTS ................. 3-6 TABLE 6-1 : MODEL 6622A AND 6623A-6000 ERROR MESSAGES ..............6-2 TABLE 6-2 : MAINTENANCE SCHEDULE ......................6-3 TABLE 7-1 : GENERAL SPECIFICATIONS ......................7-1 TABLE 7-2 : GENERAL SPECIFICATIONS (CONTINUED) ................

  • Page 7: Introduction

    Bridges. The three models are essentially the same except for the test current capability. The 6623A-4000 enables test currents up to 4000 A to be realized and is supplied with four CS1000 current sources. The 6623A-5000 and 6623A-6000 models provide for test currents up to 5000 and 6000 A and are supplied with five and six CS1000 current sources respectively.

  • Page 8: Overview

    Section 1 1.3. OVERVIEW The Model 6623A-6000 High Current Range Extender is a precision, fixed ratio, direct current transformer based on the principle of the direct current comparator. Figure 1-1 illustrates the instrument circuits in block diagram form with the connections to the 6622A Bridge. A precision programmable current source is incorporated into the extender such that measurements can be fully automated through the 6622A Bridge using either front panel setup or fully automatic computer control.

  • Page 9: Figure 1-1 : Model 6623A-6000 Block Diagram

    Section 1 CS1000 Current Sources DCC6000 DCC Comparator CS1000 Flux Detector Servo Amplifier Demodulator Magnetic CS1000 Slave PSU Modulator CS1000 x40,000 Current 1000T Comparator x4,000 Toroid 6,000A 100T x400 Servo Amplifier Flux Detector 10A Bipolar Demodulator Magnetic Current Source Modulator Slave PSU 1000T Current...
  • Page 10 Section 1 OM6623A-4_5_6,000-B1-00 01 September 2021...

  • Page 11: Installation

    22U rack cabinets fully configured for 220 Volt, 50/60 Hz operation with a power requirement of two 30 A, 220 Volt circuits for each cabinet. The 6623A-4000 and 6623A-5000 models are in the same 22U rack cabinet assembly fully configured for 220 Volt, 50/60 Hz operation with the same power requirements.

  • Page 12: Fuse Replacement

    Section 2 for 100 to 240 Volt operation if desired and connected to a separate source as with the 6622A Bridge as described in the 6623A-10 Operation Manual. The 6623A-10 selection is noted on the back panel of the instrument to coincide with the requested voltage at the time of order.

  • Page 13: Setup And Power On

    Verify that the Line Voltage to be used matches the Line Voltage setting marked on the back panel of the 6623A-6000. If the Line Voltage to be used does not match, contact Guildline Instruments Limited for instructions before proceeding.

  • Page 14: Incoming Inspection

    Section 2 Note 7: Warm up time of 45 minutes is recommended to meet full specifications. The system should now be ready to use as a 10 A current range extender. Refer to the 6623A-10 Operation Manual for the incoming inspection procedure at this point.
  • Page 15 Section 2 information on setting up or checking the range extender profile. If the bridge was shipped with the range extender then the extender profile would have been created in the bridge before shipment. Information required for the range extender profile is provided with each range extender shipment. Use the following measurement set up procedure to verify the functional performance of the range extender.
  • Page 16 Section 2 The following is a step by step procedure for connecting the resistors and for setting up the bridge properly to make the measurements. Step 1) Connect a 1 ohm resistance standard to the Rs terminals and 0.1 ohm resistance standard to the Rx terminals of the 6622A Bridge.
  • Page 17 Select 'Low Ohms' mode function key. Press the right hand key until the selection '6623A-6000' is shown and select 'Edit' function key. Alternatively select '6623A-4000’ or '6623A-5000' as appropriate. Note that the 6622A may have to be programmed for the 6000...
  • Page 18 Section 2 The difference should be less than +/- 0.00001 ohms, (100 uΩ/Ω), depending on the stability of the resistors used in the test. Step 10) Disconnect the leads connected to the Rx C1 and C2 terminals of the 6623A-10 and connect them to the C1 and C2 terminals of the x400-30A range on the back panel of the DCC-6000.
  • Page 19 Section 2 Step 14) Record the ohms value displayed after about 15 minutes of measuring and then stop the measurement. Step 15) Disconnect the leads connected to the x400, 30A C1 and C2 terminals and connect them to the C1 and C2 terminals of the x4000, 300A range on the back panel of the DCC-6000.
  • Page 20 Section 2 Note: The test should execute with no measurement errors indicated and should indicate an ohms value approximating the actual values of the standards. This is not the 6623A-6000 full rated accuracy but serves a functional test for the purposes of determining the instrument has been received in proper working order.

  • Page 21: 6623A-6000 Front Panel

    Section 2 2.3. 6623A-6000 FRONT PANEL There are no controls on the front panel of the 6623A-6000. Figure 2-2 : 6623A-6000 Front View OM6623A-4_5_6,000-B1-00 2-11 01 September 2021...

  • Page 22: Power

    A fault will cause the particular current source to be disconnected and will allow the remaining units to continue to function. Note that the 6623A-4000 and 6623A-5000 models will have only four or five CS1000 Current Source modules respectively installed.

  • Page 23: 6623A-6000 Rear Panel Connectors And Controls

    Section 2 2.4. 6623A-6000 REAR PANEL CONNECTORS AND CONTROLS Figure 2-3 : 6623A-6000 Rear View OM6623A-4_5_6,000-B1-00 2-13 01 September 2021...

  • Page 24: Line Input Connectors

    Section 2 2.4.1. Line Input Connectors The Line Input Connectors are a combination of a 3-prong AC standard male IEC connector, and ON/OFF switch. The DCC6000 Comparator section has a fused line input with access for fuse replacement. The CS1000’s have a 15 A circuit breaker as part of the Line Input Connector.

  • Page 25: Figure 2-4 : Rear Panel Connections - 6623A-10, X20-3A Range

    Section 2 Figure 2-4 : Rear Panel Connections – 6623A-10, x20-3A Range OM6623A-4_5_6,000-B1-00 2-15 01 September 2021...

  • Page 26: Figure 2-5 : Rear Panel Connections - 6623A-6000, X400-30A Range

    Section 2 Figure 2-5 : Rear Panel Connections – 6623A-6000, x400-30A Range OM6623A-4_5_6,000-B1-00 2-16 01 September 2021...

  • Page 27: Quick Measurement Guide

    Section 3 QUICK MEASUREMENT GUIDE 3.1. MEASUREMENT OPERATION GUIDE This section contains information regarding the measurement of resistors in the range of 0.1µ ohm to 10 ohms. This guide is provided for manual control of the 6623A-6000 from the front panel of the 6622A Bridge.

  • Page 28: Low Ohm Mode Resistance Measurement For All 6622A Models With The 6623A-6000

    Section 3 3.1.1. Low Ohm Mode Resistance Measurement for all 6622A Models with the 6623A-6000 The 6622A in its Low Ohm Mode enables measurement of resistors below 100 ohms. When used with a model 6623A-6000 High Current Range Extender, measurement of low ohm resistors can be made at a maximum test current up to 6000 A.
  • Page 29 This can be done by pressing the softkey until the displayed value is changed to '6623A-6000A'. Alternatively select '6623A-4000' or '6623A-5000' as appropriate. Select 'Edit' function key. Enter standard resistor value on highlighted 'Resistance RS:' line on display by using the numeric key pad.

  • Page 30: Recommended Test Setup Limits And Precautions For 6623A-6000

    Section 3 3.1.2. Recommended Test Setup Limits and Precautions for 6623A-6000 See Table 3-2 for the recommended test setup limits for various resistor ranges. Note that the current in the standard resistor is controlled by the resistance of the resistor to be measured and the extender current such that the potentials across each resistance are equal and can be determined by the following formula: Standard Resistor Current = Test Resistor Current x (Rx / Rs)

  • Page 31: Example Calculations

    Section 3 3.1.4. Example Calculations For example, if a 0.001 ohm shunt is to be measured at 100 A; The extender range x4000-300A is required to satisfy the test current requirement. The standard resistor must be at least; Rs = 4000 x 0.001 / 2 = 2 ohm or higher, so choose a standard resistor of 10 ohms.

  • Page 32: Test Current Cable Size Selection

    Section 3 3.1.5. Test Current Cable Size Selection Each range extender is shipped with sufficient variety of test current cables to cover the range of operation of the extender. Always choose a cable size large enough to prevent excessive temperature rise in the cables which will have an adverse effect on the resistance of the shunt being measured.
  • Page 33 Section 3 Rx Resistor Ix-max Reversal Extender Rs Current Comment (Ω) (mA-max) Rate (sec) (Ω) Ratio/Range 1000 1 - 10 0.32 20:1 / 3A Limit of 10 mW in Rs 0.32 - 1 20:1 / 3A Limit of 10 mW in Rs 0.1 - 0.32 20:1 / 3A Limit of x 20, 3A Range...

  • Page 34: Bridgeworks Data Acquisition Software

    Section 3 3.2. BRIDGEWORKS DATA ACQUISITION SOFTWARE The BridgeWorks, version 2.1b or higher, Data Acquisition Software is the control software for the 6622A Series Automatic DCC Resistance Bridges and the 6623A series of Current Range Extenders. Using the 6622A with the BridgeWorks Data Acquisition Software will increase the functionality and the productivity of the bridge.

  • Page 35: Instrument Operation

    Section 4 INSTRUMENT OPERATION 4.1. FRONT PANEL OPERATING PROCEDURE The 6622A Bridges and 6623A-6000 High Current Range Extenders are manually operable from the front panel of the 6622A. The BridgeWorks Software User Manual contains the operating instructions for fully automatic software control of the 6622A Automatic DCC Resistance Bridge and the 6623A-6000 High Current Range Extender via the computer system.
  • Page 36 Section 4 OM6623A-4_5_6,000-B1-00 01 September 2021...

  • Page 37: Verification And Calibration

    DC Current Shunt Standard Guildline 9230A-3000-0.00001Ω Temperature Controlled Oil/Air Bath Guildline 5010 or 5032 Note: The 6623A-6000 is calibrated at the factory using a temperature controlled oil bath controlled to within ± 0.02 °C. If the ambient conditions in the laboratory are sufficiently controlled to within ±...
  • Page 38 Section 5 5.3. PROCEDURE 5.3.1. PRELIMINARY MEASUREMENT OF THE 9230A-100-0.01Ω SHUNT Place the 9330/10Ω Resistance Standard and the 9230A-100-0.01Ω Current Shunt Standard in the Bath and allow stabilizing in temperature at 25.0 °C. Connect the 9330/10Ω Standard to the 6622A Current Comparator Bridge Rs terminals and connect the 9230A-100-0.01Ω...
  • Page 39 Note that a calibrated current shunt that is suitable for use at the high end of the current range will be required such as the Guildline model 9230A-1000-0001Ω shunt that is required in the next step.

  • Page 40: Figure 5-1 : Model 6623A-6000 Setup, X4000-300A Range

    Note that a calibrated current shunt that is suitable for use at the high end of the current range will be required such as the Guildline model 9230A-10,000-000001Ω. OM6623A-4_5_6,000-B1-00...

  • Page 41: Figure 5-2 : Model 6623A-6000 Setup, X40,000-6000A Range

    Section 5 Figure 5-2 : Model 6623A-6000 setup, x40,000-6000A Range OM6623A-4_5_6,000-B1-00 01 September 2021...
  • Page 42 Section 5 OM6623A-4_5_6,000-B1-00 01 September 2021...

  • Page 43: Troubleshooting And Maintenance

    Section 6 TROUBLESHOOTING AND MAINTENANCE 6.1. INTRODUCTION This section covers troubleshooting, repair and verification of the 6623A Current Range Extender. 6.1.1. Error Messages The 6622A Automatic DCC Resistance Bridge will display error messages either on the front panel display of the 6622A Resistance Bridge in manual mode or on the computer monitor when using the BridgeWorks Data Acquisition Software.

  • Page 44: Table 6-1 : Model 6622A And 6623A-6000 Error Messages

    Section 6 Error Number Error Corrective Measures nV Detector Communication None, fatal hardware error within the Failure 6622A Bridge, (try power switch) Invalid Test Setup Resistors not wired to Rx and Rs terminals properly, improper test setup No current path on Rx or Rs terminals, Servo Railed improper connections or 6623A failure Nano Zero, nVoltmeter not...

  • Page 45: Table 6-2 : Maintenance Schedule

    Preventive maintenance is limited to checking the instrument operation, test current accuracy and cooling fan operation. The Service Manual available on request from Guildline Instruments Limited provides complete alignment and test information required if the 6623A-6000 fails to meet performance specifications in section 5.
  • Page 46 RsP1 terminal and is approximately equal to that of the voltage on the shunt resistance. If the polarity of the displayed current on the bridge is not initially positive this indicates a problem within the range extender internal connections. Contact Guildline Instruments to resolve this particular problem.

  • Page 47: Table 7-1 : General Specifications

    Section 7 APPENDICES 7.1. GENERAL SPECIFICATIONS 6623A-4000/5000/6000 High Current Range Extenders General Specifications Operating Temperature to Full +23 ± 3 °C Specification +73 ± 5.4 °F Operating Temperature Maximum +18 to +28 °C Range <50% RH +64.4 to +82.4 °F...

  • Page 48: Table 7-2 : General Specifications (Continued)

    Section 7 7.2. GENERAL SPECIFICATIONS (continued) 6623A-4000/5000/6000 High Current Range Extenders General Specifications (3 Years) Ω Resistance Range 0.1µ to 10 Transformation Ratios 1000:1, 10,000:1, 100,000:1 Transformation Ratio Accuracies ±0.4, ±0.5, ±0.6 Linearity ±0.01 ppm of full scale ratio Temperature Coefficient ±0.01...

  • Page 49: Cable Connection Diagrams

    Section 7 7.4. CABLE CONNECTION DIAGRAMS The following drawing illustrates and provides instructions for the installation assembly of the two rack mount cabinets and he associated bus bar connections required between the cabinets. See drawing 31075-06-05. OM6623A-4_5_6,000-B1-00 01 September 2021...
  • Page 50 Section 7 7.5. CABINET ASSEMBLY INSTRUCTIONS The following drawing illustrates and provides instructions for the installation assembly of the two rack mount cabinets and he associated bus bar connections required between the cabinets. See drawing 31075-06-05. OM6623A-4_5_6,000-B1-00 01 September 2021...

This manual is also suitable for:

6623a-50006623a-6000

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