Table of Contents
Advertisement
Quick Links
Agilent Models 6814B, 6834B, and 6843A
Agilent
Part No. 5962-0887
Microfiche No 5962-0888
User's Guide
AC Power Solutions
For instruments with Serial Numbers:
Agilent 6814B: 3601A-00101 through 00270
US36010101-up
Agilent 6834B: 3601A-00101 through 00140
US36010101-up
Agilent 6843A: 3540A-00101 through 00140
US35400101-up
Printed in U.S.A.
December, 1998
Update April 2000
Advertisement
Table of Contents
Related Manuals for Agilent Technologies 6814B
Summary of Contents for Agilent Technologies 6814B
- Page 1 Agilent Models 6814B, 6834B, and 6843A Agilent 6814B: 3601A-00101 through 00270 Agilent 6834B: 3601A-00101 through 00140 Agilent 6843A: 3540A-00101 through 00140 Agilent Part No. 5962-0887 Microfiche No 5962-0888 User’s Guide AC Power Solutions For instruments with Serial Numbers: US36010101-up US36010101-up US35400101-up Printed in U.S.A.
-
Page 2: Warranty Information
If Agilent Technologies is unable, within a reasonable time to repair or replace any product to condition as warranted, the Customer shall be entitled to a refund of the purchase price upon return of the product to Agilent Technologies. LIMITATION OF WARRANTY... -
Page 3: Safety Summary
Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Agilent Technologies assumes no liability for the customer’s failure to comply with these requirements. - Page 4 SAFETY SYMBOLS Direct current Alternating current Both direct and alternating current Three-phase alternating current Earth (ground) terminal Protective earth (ground) terminal Frame or chassis terminal Terminal is at earth potential. Used for measurement and control circuits designed to be operated with one terminal at earth potential. Terminal for Neutral conductor on permanently installed equipment Terminal for Line conductor on permanently installed equipment On (supply)
-
Page 5: Declaration Page
Rockaway, New Jersey 07866 U.S.A. a) AC Power Source/Analyzer b) Harmonic/Flicker Test System a) Agilent 6814A, 6814B, 6834A, 6834B b) Agilent 6843A IEC 1010-1:1990+A1(1992) / EN 61010-1:1993 CISPR 11:1990 / EN 55011:1991 - Group 1 Class A IEC 801-2:1991 / EN 50082-1:1992 - 4 kV CD, 8 kV AD IEC 801-3:1984 / EN 50082-1:1992 - 3 V / m IEC 801-4:1988 / EN 50082-1:1992 - 0.5 kV Signal Lines... -
Page 6: Acoustic Noise Information
This document contains proprietary information protected by copyright. All rights are reserved. No part of this document may be photocopied, reproduced, or translated into another language without the prior consent of Agilent Technologies. The information contained in this document is subject to change without notice. -
Page 7: Table Of Contents
Table of Contents Warranty Information Safety Summary Declaration Page Acoustic Noise Information Printing History Table of Contents 1. GENERAL INFORMATION Document Orientation Safety Considerations Options, Accessories, and User Replaceable Parts Description Capabilities Front Panel/Remote Operation Output Characteristic Ranges Output VA Capability 2. - Page 8 4. FRONT PANEL OPERATION Introduction Front Panel Description System Keys Function Keys Immediate Action Keys Scrolling Keys Meter Display Keys Output Control Keys Protection and Status Control Keys Trigger and List Control Keys Entry Keys Examples of Front Panel Programming 1 - Setting the Output Voltage Amplitude Procedure for Three-Phase AC Sources 2 - Setting the Output Frequency...
-
Page 9: General Information
General Information Document Orientation This manual describes the operation of the Agilent Technologies 6814B/6834B/6843A AC Power Solutions. These units will be referred to as "ac sources" throughout this manual. Operation of the Agilent 6843A is described for normal mode operation only. The following documents are shipped with... -
Page 10: Safety Considerations
1 - General Information Safety Considerations This ac source is a Safety Class 1 instrument, which means it has a protective earth terminal. That terminal must be connected to earth ground through a power source equipped with a ground receptacle. Refer to the Safety Summary page at the beginning of this guide for general safety information. -
Page 11: Capabilities
Figure 1-1. AC Source Functional Elements The following model ac power sources are described in this User’s Guide: Model Description Agilent 6814B 3000 VA single –phase operation Agilent 6834B 1500 VA/ phase for three-phase operation (4500 VA for single-phase operation) -
Page 12: Front Panel/Remote Operation
1 - General Information Additional total power and neutral current measurements in the three-phase model. All measurements made with 16-bit resolution. Trigger In and Trigger Out for synchronizing transient events or measurements with external signals. Front panel control with 14-character vacuum fluorescent display, keypad, and rotary pulse generators for voltage and frequency settings. -
Page 13: Output Va Capability
Figure 1-3. AC Source VA Capabilities See Figure 1-3 10A (6834B 3phase) 30A (6834B 1phase) 20A (6814B) 32A (6843A) OUTPUT VOLTAGE, PERCENT OF RANGE General Information - 1 Irms... -
Page 15: Installation
Installation Inspection Damage When you receive your ac source, inspect it for any obvious damage that may have occurred during shipment. If there is damage, notify the shipping carrier and the nearest Agilent Sales and Support Office immediately. The list of Agilent Sales and Support Offices is at the back of this guide. Warranty information is printed in the front of this guide. -
Page 16: Location
Option 1CM or 1CP. Installation instructions are included with each rack mounting kit CAUTION: Agilent 6814B/ 6834B/ 6843A units require instrument support rails for non-stationary installations. These are normally ordered with the cabinet and are not included with the rack mounting kits. -
Page 17: Input Connections
In order to maintain phase current balancing, the power service should be a dedicated line with only Agilent 6814B/6834B/6843A ac sources drawing current from it. A disconnect box located near the ac source is recommended for all installations and is mandatory for direct-wired installations. -
Page 18: Output Connections
2 - Installation CAUTION LINE RATING WARNING WARNING 10cm (4 in.) Figure 2-2. Connecting the Power Cord Output Connections The power output terminal block has a termination for each of the output phases ( 1, 2, 3 ) and a floating neutral line (COM) for the phase return connections. -
Page 19: Wire Considerations
NOTE: To minimize the possibility of instability on the output, keep load leads as short as possible bundle or twist the leads tightly together to minimize inductance Wire Considerations Current Ratings Fire Hazard To satisfy safety requirements, load wires must be large enough not to overheat when carrying the maximum short-circuit current of the ac source. -
Page 20: Remote Sense Connections
Voltage key as explained in Chapter 4. Set the ALC command to INT (internal) to disable remote sensing. NOTE: Phase 2 and phase 3 connections are not available on 6814B/6843A units. Connector and connections are rotated 180 degrees for 6843A. -
Page 21: Ovp Considerations
OVP Considerations The overvoltage protection circuit senses voltage near the output terminals, not at the load. Therefore the signal sensed by the OVP circuit can be significantly higher than the actual voltage at the load. When using remote sensing, you must program the OVP trip voltage high enough to compensate for the voltage drop between the output terminals and the load. -
Page 22: Controller Connections
The controller can be made aware of the fault via a service request (SRQ) generated by the Questionable Status summary bit. NOTE: Diagram is correct for 6814B/6834B. Connector and connections are rotated 180 degrees for 6843A... -
Page 23: Rs-232 Interface
RS-232 Interface The ac source provides an RS-232 programming interface, which is activated by commands located under the front panel Address key. When the RS-232 interface is selected, the GPIB interface is disabled. NOTE: Sending or receiving data over the RS-232 interface when not configured for REMOTE operation can cause unpredictable results. - Page 24 2 - Installation Hardware Handshake The RS-232 interface uses the DTR (data terminal ready) line as a holdoff signal to the bus controller. When DTR is true, the bus controller may send data to the ac source. When DTR goes false, the bus controller must stop sending data within 10 characters, and must not send any more data until DTR goes true again.
-
Page 25: Turn-On Checkout
Turn-On Checkout Introduction Successful tests in this chapter provide a high degree of confidence that the ac source is operating properly. For verification tests, see appendix B. Complete performance tests are given in the Service Guide. NOTE: This chapter provides a preliminary introduction to the ac source front panel. See Chapter 4 for more details. -
Page 26: Using The Keypad
The following equipment is recommended for performing this output checkout procedure: 1 - 100 W light bulb for Agilent 6814B/6843A; 3 - 100 W light bulbs for Agilent 6834B 1 - light bulb socket for Agilent 6814B/6843A; 3 - sockets for Agilent 6834B... - Page 27 Make sure that the unit is turned off, and make the following connections to the output. If you are verifying a single phase source, you only need to connect one bulb. Figure 3-1.Verification Connections Procedure Turn the unit on. Press the Voltage key. Press Phase Select until only 1 is lit.
- Page 28 3 - Turn-On Checkout Procedure Press or ô and scroll to the VOLT:PROT item Press 1, 6, 0, Enter Press Protect, scroll to the VOLT:PROT item, and press 3, 2, 0, Enter Press Protect, and Enter Press Shift, and Current Press .
-
Page 29: In Case Of Trouble
In Case of Trouble Error Messages Ac source failure may occur during power-on selftest or during operation. In either case, the display may show an error message that indicates the reason for the failure. Selftest Errors Pressing the Shift Error keys will show the error number. -
Page 31: Front Panel Operation
Front panel Operation Introduction Here is what you will find in this chapter: a complete description of the front panel controls front panel programming examples that describe: how to program the output voltage and frequency how to measure the output how to program the output pulses and lists how to trigger output changes Front Panel Description... - Page 32 4 - Front Panel Operation 14-character vacuum fluorescent display for showing programmed commands Display and measured values. Annunciators light to indicate operating modes and status conditions: Annunciators 1, 2, 3 Phase 1, 2, or 3 is being controlled or metered. The ac source output is in constant-voltage mode.
-
Page 33: System Keys
System Keys Refer to the examples later in this chapter for more details on the use of these keys. This is the blue, unlabeled key, which is also shown as Pressing this key accesses the alternate or shifted function of a key (such as ). -
Page 34: Function Keys
4 - Front Panel Operation Function Keys Refer to the examples later in this chapter for more details on the use of these keys. Immediate Action Keys Immediate action keys immediately execute their corresponding function when pressed. Other function keys have commands underneath them that are accessed when the key is pressed. Output This key toggles the output of the ac source between the on and off states. -
Page 35: Scrolling Keys
Scrolling Keys Scrolling keys let you move through the commands in the presently selected function menu. ô These scroll keys let you move through the choices in a command list. Press to bring up the next command in the list. Press to the previous command in the list. -
Page 36: Output Control Keys
4 - Front Panel Operation Shift Harmonic Press this key to access the harmonic menu list Display <reading>A I:MAG: <index> <reading> I:PHASE: <index> <reading>V V:MAG: <index> <reading> V:PHASE: <index> <reading> N:MAG: <index> <reading> N:PHASE: <index> <reading> CURR:THD <reading> VOLT:THD Output Control Keys Output control keys control the output functions of the ac source. - Page 37 Press this key to access the phase menu list. Shift Phase Display PHASE <value> PHASE:T <value> PHASE:M <char> Press this key to access the shape menu list. Shape Display SHAPE <char> SHAPE:T <char> SHAPE:M <char> CLIP <value> Press this key to access the pulse menu list. Pulse Display WIDTH <value>...
-
Page 38: Protection And Status Control Keys
4 - Front Panel Operation Protection and Status Control Keys The Protect and Status keys control the protection functions and status registers of the ac source. Refer to Chapter 4 of the Programming guide for more information on the status registers. Protect Press this key to access the protection menu list. -
Page 39: Trigger And List Control Keys
Trigger and List Control Keys The Trigger Control key controls output transient triggers. The List key controls the generation of output lists. A list can contain up to 100 points, each of which can specify an output change (or transient). Refer to Chapter 4 of the Programming Guide for more information about programming triggers and lists. -
Page 40: Entry Keys
4 - Front Panel Operation Entry Keys Refer to the examples later in this chapter for more details on the use of these keys. Ë Ì These keys let you scroll through choices in a parameter list that apply to a specific command. -
Page 41: Examples Of Front Panel Programming
Examples of Front Panel Programming You will find these examples on the following pages: Setting the output voltage amplitude Setting the output frequency Setting the overcurrent protection feature Generating step, pulse, and list transients Programming trigger delays and phase synchronization Programming slew rates Measuring peak inrush current Setting the GPIB address or RS-232 parameters... -
Page 42: Procedure For Three-Phase Ac Sources
4 - Front Panel Operation Procedure for Three-Phase AC Sources If you have a three-phase ac source, you can set the rms voltage of all three phases identically, or set each one differently. This is controlled via the Phase Select Menu on the Function keypad. The following example shows how you can set the phase 1 output to 120 Vrms, phase 2 to 180 Vrms, and phase 3 to 235 Vrms. -
Page 43: Setting The Output Frequency
2 - Setting the Output Frequency When you turn on the ac source, the default output frequency is a 60 Hz. Assuming the voltage output from example 1 is in effect (120 Vrms sinewave), change the frequency to 50 Hz as follows: Action You can set the frequency in the same way that you set the voltage: On the Function keypad, press Freq. -
Page 44: Using Transient Voltage Modes
4 - Front Panel Operation 4 - Using Transient Voltage Modes The ac source voltage can be programmed in the following transient operating modes: STEP causes the output to permanently change to its triggered value. PULSE causes the output to change to its triggered value for a specific time, as determined by the Pulse menu parameters. - Page 45 Pulse Transient In the following example, the output is four 83.3-millisecond, 120 Vrms pulses at 60 Hz. The figure shows the trigger, pulse count, pulse period, and duty cycle. NOTE: From the Output Menu, execute the *RST command to reset the ac source. This is necessary because any previously programmed functions remain in effect until cleared.
- Page 46 4 - Front Panel Operation List Transient Lists are the most flexible means of generating multiple or synchronized transient outputs. The following figure shows a voltage output generated from a list. The output shown represents three different ac voltage pulses (160 volts for 33 milliseconds, 120 volts for 83 milliseconds, and 80 volts for 150 milliseconds) separated by 67-millisecond, 0-volt intervals.
-
Page 47: Trigger Delays And Phase Synchronization
Press ô until you access the voltage list. This specifies the amplitude of each output point during its corresponding dwell period. The first voltage list point (0) appears in the display. On the Entry keypad, press 1 6 0 and Enter. Pressing the Enter key automatically advances to the step in the list. - Page 48 4 - Front Panel Operation VOLT T level VOLT level VOLT T level VOLT level VOLT T level VOLT level Figure 4-7. Trigger Delays and Phase Synchronization Example This example uses the default trigger parameters. First, access the Voltage menu and program the immediate and triggered voltage levels, followed by the voltage transient mode.
- Page 49 On three-phase ac sources, phase 1 is normally offset by 0 from the internal phase reference while phase 2 and phase 3 are offset by 240 and 120 respectively. Therefore, synchronized transient events will occur at the phase angle programmed for the phase 1 output, but at different phase angles on the phase 2 and phase 3 outputs.
-
Page 50: Using Slew Rates To Generate Waveforms
4 - Front Panel Operation 6 - Using Slew Rates to Generate Waveforms As shown in the previous examples there are a number of ways that you can generate custom waveforms. Programmable slew rates provide additional flexibility when customizing waveforms. The following figure illustrates how programmable slew rates are applied in the transient operating modes. - Page 51 Example This example uses the immediate slew rate. First, access the Voltage menu and press ô until you access the mode command. On the Entry keypad, press ° to obtain FIXED. Press Enter. Access the voltage menu and press ô until you access the slew command. On the Entry keypad, press 5 0 Enter to program a slew rate of 50 volts/second.
-
Page 52: Measuring Peak Inrush Current
4 - Front Panel Operation 7 - Measuring Peak Inrush Current Peak inrush current is a non-repetitive measurement in the sense that peak inrush current occurs only when the unit under test is first turned on. In order to repeat the measurement, you must turn the unit off and wait for any input filter capacitors to discharge completely. -
Page 53: Setting The Gpib Address And Rs-232 Parameters
8 - Setting the GPIB Address and RS-232 Parameters Your ac source is shipped with the GPIB address set to 5 This address can only be changed from the front panel using the Address menu located under the 232 interface and specify RS-232 parameters such baud rate and parity. Action To set the GPIB address, proceed as follows: On the System keypad, press Address. -
Page 54: Switching Between Single- And Three-Phase Operation (Agilent 6834B Only)
4 - Front Panel Operation 10 - Switching Between Single- and Three-phase Operation (Agilent 6834B only) When shipped from the factory, the Agilent 6834B ac source is configured for three-phase operation. You can configure the Agilent 6834B for single-phase operation. This increases the available output power for phase 1 from 1.5 kVA to 4.5 kVA. -
Page 55: Specifications
Frequency: Power (VA): Power (Watts): Power Factor: Specifications subject to change without notice. From line to neutral on Agilent 6834B Agilent 6814B Agilent 6834B 150 V low range; 300 V high range 3 kVA 1.5 kVA/phase 20 A low range... -
Page 56: Supplemental Characteristics
Baud Rates: Data Format: Language: Trig In/Trig Out Characteristics Trig Out (HC TTL output): Trig In (10k pullup): Agilent 6814B Agilent 6834B 180 235 Vac (3-phase) or 360 440 Vac (3-phase) 47 63 Hz 300 Vrms 18 A low range... - Page 57 Height (add 12.7 mm or 0.5 in. for feet) Width: Depth: Net Weight: Shipping Weight: Agilent 6814B Agilent 6834B 16.5 Vdc between INH terminals; FLT terminals; and from INH terminals to chassis ground I ol = 1.25 mA max. V ol = 0.5 Vmax.
-
Page 59: Introduction
Verification and Calibration Introduction This appendix includes verification and calibration procedures for the Agilent 6814B/6834B/6843A AC Power Solutions. Instructions are given for performing the procedures either from the front panel or from a controller over the GPIB. The verification procedures do not check all the operating parameters, but verify that the ac source is performing properly. -
Page 60: Test Setup
B - Verification and Calibration Test Setup Figure B-1 shows the setup for the tests. Be certain to use load leads of sufficient wire gauge to carry the full output current (see Chapter 2). B. CURRENT SETUP VOLTMETER CAUTION: Connect only one phase at a time Figure B-1. -
Page 61: Voltage Programming And Measurement Accuracy
DVM across the current shunt as shown in Figure B-1. Use the following load resistor values: Agilent 6814B = 7.5 ; Agilent 6834B = 15 ; Agilent 6843A = 5 Turn on the ac source. In the Output menu, execute the *RST command to reset the unit to its factory default state. -
Page 62: Performing The Calibration Procedure
B - Verification and Calibration Table B-2. Agilent 6814B/6834B/6843A Verification Test Record Model ________________ Test Description Voltage Programming and Measurement Accuracy Low voltage (150 Vrms) Front Panel Measurement High voltage (300 Vrms) Front Panel Measurement Agilent 6814B Current Measurement Accuracy... -
Page 63: Front Panel Calibration Menu
Front Panel Calibration Menu The Entry keypad is used for calibration functions. Press this key to access the calibration menu. Shift Display CAL ON <value> CAL OFF CAL:LEV <char> CAL:DATA <value> CAL:VOLT:AC CAL:VOLT:PROT CAL:CURR:AC CAL:CURR:MEAS CAL:IMP CAL:VOLT:RTIM CAL:SAVE CAL:PASS <value> Notes: Agilent 6843A only value = a numeric value... -
Page 64: Calibrating And Entering Voltage Calibration Values
B - Verification and Calibration Calibrating and Entering Voltage Calibration Values Action Connect the DVM (ac volts mode) directly to the ac source via the ratio transformer shown in Figure B-1. Do not connect the load resistor or current shunt. Press Shift Calibration, scroll to CAL VOLT AC, and press Enter. -
Page 65: Calibrating And Entering Current Calibration Values
Calibrating and Entering Current Calibration Values Action Connect the appropriate current shunt and load resistor as shown in figure B- 1. Connect the DVM (ac rms mode) across the current shunt. If you are calibrating a 3-phase source, make sure that the default phase 1 ( 1) annunciator is lit. -
Page 66: Calibrating The Output Impedance (Agilent 6843A Only)
B - Verification and Calibration Calibrating the Output Impedance (Agilent 6843A only) NOTE: The output voltage and output current must be calibrated before the output impedance can be calibrated. Action Connect only the output impedance resistor across the output of the ac source. Do not connect any other equipment. -
Page 67: Calibration Error Messages
Calibration Error Messages Errors that can occur during calibration are shown in the following table. Table B-3. GPIB Calibration Error Messages Error CAL switch prevents calibration (This is a hardware disable, see the ac source Service Manual.) CAL password is incorrect CAL not enabled Computed readback cal constants are incorrect Computed programming cal constants are incorrect... - Page 68 PRINT TABXY(35,7),"0.001 ohm <200ppm Current Shunt for 6843A" PRINT TABXY(35,8),"0 - 5 ohm > 4.8 kW power resistor for 6843A" PRINT TABXY(35,9),"2 - 15 ohm > 1.5 kW power resistor for 6814B/6834B" PRINT TABXY(35,10),"1 - 1 ohm > 100 watt impedance resistor for 6843A"...
- Page 69 PRINT TABXY(15,10),"CALIBRATING OVERVOLTAGE PROTECTION" OUTPUT @Ac;"CAL:VOLT:PROT" PRINT TABXY(30,15),"WAIT" WAIT 30 OUTPUT @Ac;"CAL:SAVE" OUTPUT @Ac;"CAL:STATE OFF" CLEAR SCREEN PRINT TABXY(15,5),"1. Turn off the AC Source" PRINT TABXY(15,7),"2. Connect the current shunt and load resistor, see fig.B-1" PRINT TABXY(15,9),"3. Connect the 3458A across the current shunt" PRINT TABXY(15,11),"4.
-
Page 71: Error Number List
Error Messages Error Number List This appendix gives the error numbers and descriptions that are returned by the ac source. Error numbers are returned in two ways: Error numbers are displayed on the front panel Error numbers and messages are read back with the SYSTem:ERRor? query. SYSTem:ERRor? returns the error number into a variable and returns two parameters: an NR1 and a string. - Page 72 C - Error Messages –171 Invalid expression –178 Expression data not allowed Execution Errors –200 Execution error [generic] –221 Settings conflict [check current device state] –222 Data out of range [e.g., too large for this device] –223 Too much data [out of memory; block, string, or expression too long] –224 Illegal parameter value [device-specific] –225...
- Page 73 Voltage selftest error, output 2 Voltage selftest error, output 3 Current selftest error, output 1 Current selftest error, output 2 Current selftest error, output 3 Fan voltage failure Digital I/O selftest error Device-Dependent Errors 100 through 32767 (sets Standard Event Status Register bit #3) Outgrd not responding Front panel not responding Ingrd receiver framing error...
-
Page 75: Index
—A— accessories, 10 airflow, 16 annunciators 1, 32 Addr, 32 Cal, 32 CC, 32 CV, 32 Dis, 32 Err, 32 OCP, 32 Prot, 32 Rmt, 32 Shift, 32 SRQ, 32 Tran, 32 Unr, 32 AWG ratings, 19 —C— cables, 10 calibration, 62 enable, 63 equipment, 59... - Page 76 Index —M— manuals, 9, 15 Meter AC+DC, 32 meter display keys Harmonic, 35 Input, 35 Meter, 35 —N— non-volatile memory clearing, 53 storing, 33 —O— operating features, 11 options, 10 output characteristic, 12 connections, 19 connector, 15 rating, 12 setting output protection, 43 setting the amplitude, 41, 54 setting the frequency, 43 Output AC+DC, 32...
- Page 77 rms current accuracy, 61 setup, 60 test record, 62 verification tests, 25 voltage control, 12 —W— warranty, 2 Waveform generation, 50 wire current ratings, 19 wiring considerations, 19 Index...
- Page 78 Agilent Sales and Support Offices For more information about Agilent Technologies test and measurement products, applications, services, and for a current sales office listing, visit our web site: http://www.agilent.com/find/tmdir You can also contact one of the following centers and ask for a test and measurement sales representative.
-
Page 79: Manual Updates
Manual Updates The following updates have been made to this manual since the print revision indicated on the title page. 4/15/00 All references to HP have been changed to Agilent. All references to HP-IB have been changed to GPIB.