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TM 11-6625-2958-14& P
TECHNICAL MANUAL
OPERATOR’S, ORGANIZATIONAL,
DIRECT SUPPORT AND GENERAL SUPPORT
MAINTENANCE MANUAL
(INCLUDING REPAIR PARTS
AND SPECIAL TOOLS LIST)
FOR
POWER SUPPLY PP-7545/U
(HEWLETT-PACKARD MODEL 6269B)
(NSN 6130-00-148-1796)
HEADQUARTERS, DEPARTMENT OF THE ARMY
21 AUGUST 1980
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SAFETY STEPS TO FOLLOW IF SOMEON E IS THE VICTIM OF ELECTRICAL SHOC K DO NOT TRY TO PULL OR GRAB THE INDIVIDUA L IF POSSIBLE , TURN OFF THE ELECTRICAL POWE R IF YOU CANNOT TURN OFF THE ELECTRICA L POWER, PULL, PUSH, OR LIFT THE PERSON T O SAFETY USING A WOODEN POLE OR A ROPE O R SOME OTHER INSULATING MATERIA L SEND FOR HELP AS SOON AS POSSIBL E AFTER THE INJURED PERSON IS FREE O F CONTACT WITH THE SOURCE OF ELECTRICA L SHOCK, MOVE THE PERSON A SHORT DISTANC E AWAY AND IMMEDIATELY START ARTIFICI
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This manual includes copyright material reproduced by permission of the HEWLETT-PACKARD Company. TM 11-6625-2958-14&P TECHNICAL MANUAL HEADQUARTERS DEPARTMENT OF THE ARMY No. 11-6625-2958-14&P Washington DC, 21 August 1980 OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUA L (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS) FOR DC POWER SUPPLY PP-7545/U (HEWLETT-PACKARD MODEL 6269B) (NSN 6130-00-148-1796) FOR SERIALS 1027A00101 AND ABOVE* REPORTING OF ERRORS You can
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TABLE OF CONTENTS Section Page No. Section Page No. 3-22 Optional Operating Modes 0 INSTRUCTIONS . . . . . . . . . . . . . . . 6-1 3-3 3-23 Remote Programming, 0-1 Scop e 0-1 0- 1 Constant Voltage 0-2 Indexes of Publications 3-3 3-32 Remote Programming, 0-3 Forms and Records 0-1 Constant Current 3-4 0-4 Reporting Equipment Im- 3-41 Remote Sensing 3-5 provement Recom- 3-46 Auto-Parallel Operation 3-6 mendations (EIR) 0- 1 3-50 Auto-Series Operation 0- 1 3-7 0-5 Administrative Storage 3-55 Auto-T
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TABLE OF CONTENTS (Continued) Sectio n Page No. Sectio n Page No. V MAINTANCE . . Continued 5-111 Crowbar Disablement 5-22 5-103 Preregulator Tracking (5 O and 60Hz Operation) 5-21 VI REPLACEABLE PARTS . . . . . . . . . . . ...6-1 5-105 50Hz Operation (Option 005) 5-21 6-1 Introduction 6-1 5-107 Crowbar Trip Voltage 5-21 6-4 Ordering Information 6-1 5-109 Maximum Crowbar Trip Voltage 5-22 VII CIRCUIT DIAGRAMS & COMPONENT LOCATION DIAGRAMS . . . . . . . . . . . 7-1 Page No. APPENDIX A . Reference
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LIST OF ILLUSTRATIONS Page No. Figure 1-1 DC Power Supply, Model 6259B, 6260B, 6261B, 6268B, or 6269B . . . . . . . . . . . .. l-l 2-1 2-1 Outline Diagram . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Bias Transformer Primary Connections for 208Vac and 115Vac Operation . . . . . . .2-2 2-3 Power Transformer Primary Connections for 208Vac and 115Vac Operation . . . ...2-2 2-4 Power Transformer T1 Primary Connections for 208Vac Ope
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TM 11-6625-2958-14&P SECTION O INTRODUCTIO N 0-1. SCOPE. 4430.3E and DSAR 4140.55. c. Discrepancy in Shipment Report (DISREP) a. This manual describes DC Power (SF 361). Fill out and forward Discrepancy in Supply PP-7545/U (fig. l-l) an d Shipment Report (DISREP) (SF 361) as prescribed provides maintenance instructions. Throughout this manual, PP-7545/U in AR 55-38/NAVSUPlNST 4610.33B/AFR 75- is referred to as the Hewlett-Pack- 18\MCO P4610.19C and DLAR 4500.15. ard (HP) Model 6269B DC Power 0-4
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TM 11-6625-2958-14&P SECTION I GENERAL INFORMATION Figure 1-1. DC Power Supply, Model 6259B, 6260B, 6261B, 6268B, or 6269B 1-1 DESCRIPTION 1-4 The power supply has rear output terminals. Either the positive or negative output terminal may 1-2 This power supply, Figure 1-1, is completely be grounded or the power supply can be operated transistorized and suitable for either bench or relay floating at up to a maximum of 300 volts above rack operation. It is a well-regulated, constant ground. voltag
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TM 11-6625-2958-14&P may be used in series when a higher output voltage Option No. Description is required in the constant voltage mode of opera- 014 Three Digit Graduated Decadial Cur- t ion or when greater voltage compliance is required rent Control: A single control that in the constant current mode of operation. Auto- replaces the coarse current control Series operation permits one-knob control of the and allows accurate resetting of the total output voltage from a “master” supply. output cu
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TM 11-6625-2958-14&P 1-14 ORDERING ADDITIONAL MANUALS your local Hewlett-Packard field office (see list at rear of this manual for addresses). Specify the 1-15 One manual is shipped with each power sup- model number, serial number prefix, and HP part ply. Additional manuals may be purchased from number shown on the title page. Table 1-1. Specifications INPUT: METERS: A front panel voltmeter (0-50V) and ammeter 230Vac *10%, single phase, 57-63 Hz, 18A, 2500W @ 230V. (0-60A) is provided. (Accurate
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TM 11-6625-2958-14&P SECTION II INSTALLATION 2-1 INITIAL INSPECTION 2-2 Before shipment, this instrument was inspect- ed and found to be free of mechanical and electri- cal defects. As soon as the instrument is unpacked, inspect for any damage that may have occurred in transit. Save all packing materials until the in- spection is completed. If damage is found, file a claim with the carrier immediately. Hewlett- Packard Sales and Service office should be notified. 2-3 MECHANICAL CHECK 2-4 This ch
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TM 11-6625-2958-14&P transformer (see Figure 2-2 B). Leave wire from fan B2 (not used in 62599) soldered to “230V” terminal. c. Re-install RFI assembly by reversing pro- cedure of Step (a). d. Unsolder wire connected to terminal 5 of power transformer T1 (see Figure 7-4) and solder it instead to terminal 4 of transformer (see Figure 2-3 B). Figure 2-3. Power Transformer Primary Connections for 208Vac and 115Vac Operation . (Model 6259B, 6261B, and 6268B) Figure 2-2. Bias Transformer Primary Conn
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TM 11-6625-2958-14&P Figure 2-4. Power Transformer T 1 Primary Connections for 208Vac Operation (Model 6260B and 6269B) of power transformer T1 (see Figure 7-4) and solder it instead to "208V" terminal of transformer (see Figure 2-5. RFI Choke (A2L1A/A2L1B) Figure 2-4 B). Connections for 115Vac Operation (Model 6259B, 6260B, 6261B, and 6268B) 2-21 CONNECTIONS FOR 115 VOLT OPERATION (Model -6259B, 6261B, and 6268B: Option 026) fan B2 is not used in Model 6259B. 2-22 To convert Model 6259B, 6261B,
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TM 11-6625-2958-14&P b. Perform Steps (b) through (e) of Paragraph grounded) and be of sufficient wire size to handle 2-22. the input current drawn by the supply (see Paragraph 2-16). Note that when the supply is operated from 2-25 CONNECTIONS FOR 50Hz OPERATION a 115Vac source, the input current is approximately double that shown in Paragraph 2-16. 2-26 For operation from a 50Hz ac input, R82 must be replaced with a 240 Ω, ±5%, ½ watt resistor 2-29 REPACKAGING FOR SHIPMENT as specified under O
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TM 11-6625-2958-14&P SECTION Ill OPERATING INSTRUCTIONS Figure 3-1. Front Panel Controls and Indicators,’ Modal 6259B, 6260B, 6261B, 6268B or 6269B 3-1 TURN-ON CHECKOUT PROCEDURE 3-3 OPERATING MODES 3-2 The following checkout procedure describes 3-4 The power supply is designed so that its mode the use of the front panal controls and indicators of operation can be selected by making strapping (Figure 3-1) and ensures that the supply is opera- connections between particular terminals on the ter-
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TM 11-6625-2958-14&P Clockwise rotation of the control produces higher trip voltages. The factory sets the control fully clockwise. The crowbar may be disabled complete- ly if desired. (Refer to Paragraph 5-11 1.) 3-13 False crowbar tripping must be considered when adjusting the trip point. If the trip voltage is set too close to the operating output voltage of the supply, a transient in the output will falsely trip the crowbar. It is recommended that the crowbar be set higher than the output vo
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TM 11-6625-2958-14&P then proceed at a slower rate towards zero. The 3-26 The output voltage of the supply should be -15mV ±5mV when zero ohms is connected across actual time required for the output to fall from two volts to zero will vary from several seconds to the programming terminals. If a zero ohm voltage closer to zero than this is required, it may be several minutes, depending upon which down-pro- gramming method is used. achieved by inserting and adjusting R110 as dis- cussed in Paragra
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TM 11-6625-2958-14&P Figure 3-6. Remote Resistance Programming (Constant Current) Figure 3-5. Remote Voltage Programming, Non-Unity Gain (Constant Voltage) with Option 021, by adjusting potentiometer R116 as discussed in Paragraph 5-98. The output current of the supply when zero ohms is placed across the (less than 30ppm Per degree Centigrade) character- istics in order to maintain the Supply's temperature programming terminals may be set to exactly zero and stability specifications. Reference r
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TM 11-6625-2958-14&P programmed using an external voltage source with variable gain by utilizing the strapping pattern shown in Figure 3-8. In this mode, the output cur- rent is found by multiplying the external voltage source (Es) by [Rp/(RR x Kp)], where Kp is the constant current voltage programming coefficient as given in Paragraph 3-37. The value of reference resistor RR and programming voltage source E s should be such that the value of ES/RR is equal to or greater than 2.5mA. 3-39 Externa
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TM 11-6625-2958-14&P from the -S terminal to the negative side of the load. 3-43 For reasonable load lead lengths, remote sensing greatly improves the performance of the Note that there may be more than one lead connect- ed to the +S and -S terminals. supply. However, if the load is located a consid- erable distance from the supply, added precautions 3-46 AUTO-PARALLEL OPERATION (Figure 3-10) must be observed to obtain satisfactory operation. Notice that the voltage drop in the load leads sub- t
