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MODEL

 

INSTRUCTION MANUAL

IMPORTANT NOTES:

1)

This manual is valid for the following Model and associated serial numbers:

MODEL

SERIAL NO.

REV. NO.

2)

A Change Page may be included at the end of the manual. All applicable changes and
revision number changes are documented with reference to the equipment serial num-
bers. Before using this Instruction Manual, check your equipment serial number to identify
your model. If in doubt, contact your nearest Kepco Representative, or the Kepco Docu-
mentation Office in New York, (718) 461-7000, requesting the correct revision for your
particular model and serial number.

 
3)

The contents of this manual are protected by copyright. Reproduction of any part can be
made only with the specific written permission of Kepco, Inc. 

 
 

Data subject to change without notice.

KEPCO

®

  

THE POWER SUPPLIER™

ORDER NO.

REV. NO.

KEPCO, INC.  

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  131-38 SANFORD AVENUE  

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  FLUSHING, NY. 11355 U.S.A.  

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  TEL (718) 461-7000  

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  FAX (718) 767-1102

email: [email protected]  

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  World Wide Web: http://www.kepcopower.com

KEPCO INC.

An ISO 9001 Company.

 

©2011, KEPCO, INC.
P/N 243-1333-b

JQE 25-20MVPY-27274

POWER SUPPLY

 

 

JQE 25-20MVPY-27274

POWER SUPPLY

INSTRUCTION MANUAL

Содержание JQE 25-20MVPY-27274

Страница 1: ...e Kepco Docu mentation Office in New York 718 461 7000 requesting the correct revision for your particular model and serial number 3 The contents of this manual are protected by copyright Reproduction...

Страница 2: ......

Страница 3: ...USA Importer s Name and Address Type of Equipment Component Power Supply Model No PRODUCT MODEL NUMBER Year of Manufacture I the undersigned declare that the product specified above when used in conj...

Страница 4: ...rounded mains connection See wiring section of this manual for complete electrical wiring instructions EN61010 1 2001 Cl 6 10 1 4 This power supply has secondary output circuits that are considered ha...

Страница 5: ...connection on the product s rear panel To reconfigure the product input for other nominal mains voltages as listed herein the product must be modified by a trained service technician The PROTECTIVE E...

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Страница 7: ...ng 3 6 3 5 2 Connections 3 6 3 5 3 Programming Resistors 3 6 3 5 4 External Switching 3 6 3 6 Output Voltage Programming With External Resistance 3 6 3 7 Constant Current Operation 3 7 SECTION 4 CALIB...

Страница 8: ...uit 5 5 SECTION 6 MAINTENANCE 6 1 General 6 1 6 2 Disassembly Reassembly 6 1 6 2 1 Cover Removal 6 1 6 2 2 A1 Circuit Board Removal 6 1 6 2 3 A5 Terminal Block Board and CR203 and CR204 Access 6 2 6 2...

Страница 9: ...mote Resistance Programming Voltage Mode 3 7 5 1 JQE Special Power Supply Simplified Schematic Diagram 5 2 6 1 A1 PC Board Reassembly 6 1 7 1 JQE 25 20MVPY 27274 Power Supply Component Locations 7 3 7...

Страница 10: ...TABLES TABLE TITLE PAGE 1 1 JQE 25 20MVPY 27274 Specifications 1 2 2 1 Front Panel Controls and Indicator Functions 2 1 2 2 Rear Panel Termination Functions 2 2 2 3 Internal Adjustments 2 3 6 1 Auxili...

Страница 11: ...iven by an integrated circuit operational amplifier A sharp current limit circuit enables current control oper ation of the power supply The output voltage of the JQE power supply can be programmed re...

Страница 12: ...adrant rectangular V I Output Voltage Voltage mode Range 0 to 25V d c Using a 10 turn front panel potentiometer Factory default setting is 0V Resolution 0 05 of nominal Accuracy 0 1 of nominal Source...

Страница 13: ...one for output current Isolated Remote monitoring signals for Output Voltage and Current Range 0 to 10V 1 for zero to nominal output voltage and current Monitoring signals are isolated from power sup...

Страница 14: ...outline drawing Figure 1 1 for details Weight 33 lbs Front panel controls Voltage and Current limit Type 10 turn potentiometers Connections AC input power cable with 3 wire safety line cord and polar...

Страница 15: ...JQE 27274 092611 1 5 1 6 Blank FIGURE 1 1 MECHANICAL OUTLINE DRAWING VMON ZERO VMON FS OVP ADJ 2953 2 ADJ OVP DELAY I OUT E CMON ZERO E OUT FS OUT ZERO FS CMON FS 2953 1...

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Страница 17: ...ce 2 2 TERMINATIONS a Front Panel Refer to Figure 2 1 and Table 2 1 FIGURE 2 1 FRONT PANEL CONTROLS AND INDICATORS JQE SPECIAL MODELS TABLE 2 1 FRONT PANEL CONTROLS AND INDICATOR FUNCTIONS CONTROL OR...

Страница 18: ...her the positive or negative output of the power supply to be grounded Also permits safety earth ground connection of JQE Special chassis 5 A C INPUT 3 wire safety line cord with a NEMA 5 15P plug 6 M...

Страница 19: ...RE A4R C 403 OVP DELAY ADJ Adjusts delay time of Overvoltage Protection PAR 4 5 A4R415 OVP ADJ Adjusts Overvoltage Protection level PAR 4 5 A1R45 V MON ZERO Calibrates zero for the voltage monitor sig...

Страница 20: ...electrical connections 1 Connect power supply to 115V AC line or refer to paragraph 2 3 for 230V AC operation if required 2 Verify that the following links are installed at the rear panel see Figure...

Страница 21: ...e JQE specials may be used as a bench operated instrument A retractable bail is provided to lift the power supply front to a convenient viewing and operating angle If the supply is to be rack mounted...

Страница 22: ......

Страница 23: ...1A This type of load connection is recommended for constant load applications Install the links between terminals 1 and 2 and between terminals 3 and 4 of TB501 at the rear panel Load connecting wires...

Страница 24: ...ly be tightly twisted For minimum ripple and noise pick up the error sensing leads may be shielded The shield should be returned to the ground point of the JQE Special 3 2 3 GROUNDED LOAD CONNECTION I...

Страница 25: ...rclockwise until the power supply output crowbars indicated by the output voltage going to zero and the circuit breaker tripping Turn the OVP ADJ potentiometer 1 4 turn clockwise Adjustment too close...

Страница 26: ...MODE VOLTAGE ERROR AMPLIFIER UNREGULATED SOURCE REFERENCE VOLTAGE NULL JUNCTION VOLTAGE CONTROL RESISTOR PASS ELEMENT INTERNAL COMMON POINT OUTPUT VOLTAGE BRIDGE CURRENT REFERENCE RESISTOR CURRENT FEE...

Страница 27: ...EO is solely dependent upon RVC This mode of operation is referred to as Resistance Program ming and is covered in detail in PAR 3 6 NOTE For all programming and adjustment components use high qualit...

Страница 28: ...wattage rating must be at least 10 times the actual power dissipated Although the control current through these resistors is only 1 mA an error current spike exists when programming large voltage excu...

Страница 29: ...3 7 CONSTANT CURRENT OPERATION JQE special power supplies will deliver constant current depending on the output voltage and output current limit settings as well as the load value In constant current...

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Страница 31: ...value measured to 0 01 accuracy e AC ripple monitor sensitivity better than 1 mV Ballantine Model 302C or Hewlett Pack ard Model 400H or Oscilloscope vertical sensitivity better than 0 1 mV div 4 3 OU...

Страница 32: ...RO OUTPUT VOLTAGE REMOTE PROGRAMMING CALIBRATION NOTE In effect only for remote operation The following procedure calibrates the output for 0V when using an external resistance for remote programming...

Страница 33: ...lerance 5mV 4 3 6 REMOTE FULL SCALE FS OUTPUT VOLTAGE CALIBRATION NOTE In effect only for remote operation 1 Turn the JQE special power supply off 2 Remove the link between terminals 5 and 6 of TB501...

Страница 34: ...and 6 of TB501 at rear panel 3 Install link between terminals 5 and 6 of TB501 at rear panel 4 Turn front panel Ilim control to the full clockwise position 5 Turn front panel VOLTAGE control to the f...

Страница 35: ...r supply The circuit breaker should not trip and the output voltage measured by either the front panel voltmeter or by the external DVM should the same as step 1 above NOTE The OVP circuit causes the...

Страница 36: ......

Страница 37: ...nsing terminals of the power supply A portion of the output voltage is continuously compared to an internal reference If an overvoltage occurs the SCR CROWBAR short circuits the output immediately and...

Страница 38: ...SPECIAL SVC 092611 coil is energized sufficiently to activate the trip mechanism of CB101 thus disconnecting the power supply from the a c line FIGURE 5 1 JQE SPECIAL POWER SUPPLY SIMPLIFIED SCHEMATIC...

Страница 39: ...ross it is con stant equal to the Auxiliary Driver Power Supply value The other branch tied to raw d c sup ports the difference between the input raw d c value and the sum of the output voltage and th...

Страница 40: ...gle connector P401 J407 The circuit receives a c voltage derived from a secondary of the main transformer T201 The a c is rectified by a conventional bridge rectifier A4CR1 capacitor fil tered by the...

Страница 41: ...oss error sensing terminals 1 SENSE and 5 SENSE of terminal block TB501 the output current is measured indirectly as a voltage drop across the current sensing resistor R203 5 2 9 MONITORING CIRCUIT Bo...

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Страница 43: ...TO FIGURE 6 1 WARNING Turn power off and disconnect unit from power source before disassembling 6 2 1 COVER REMOVAL The wrap around cover may be taken off by loosening and removing its twelve 12 hold...

Страница 44: ...ing of the problems involved in repairing complex solid state circuitry Servicing beyond simple parts replacements should consequently be attempted only by personnel thoroughly familiar with solid sta...

Страница 45: ...erminals 5 and 6 of TB501 on the rear panel is removed Verify remote programming resistor is connected between terminals 4 and 6 of TB501 on the rear panel 3 Input Circuit Breaker Trips During Operati...

Страница 46: ...ion to the problem 7 Kepco Application Engineers are available for consultation or direct help in difficult service or application problems 6 4 POWER SUPPLY MEASUREMENTS Measurement of the significant...

Страница 47: ...rrent Source and Mode Effect in Current Mode is defined as the amount of output current change resulting from a specified change in line voltage or from a change in load resistance I t can be expresse...

Страница 48: ......

Страница 49: ...ference Designation See Schematic Diagram Description See Parts List To order a part not listed in the parts list give a complete description and include its function and location NOTE Kepco does not...

Страница 50: ...ade d c Direct Current DPDT Double Pole Double Throw DPST Double Pole Single Throw ELECT Electrolytic F Farad FILM Polyester Film FLAM Flammable FP Flame Proof F Degree Fahrenheit FXD Fixed Ge Germani...

Страница 51: ...NCLUDE KEPCO PART NUMBER AND DESCRIPTION PLEASE NOTE THE MANUFACTURER S NAME AND PART NUMBER LISTED FOR EACH ITEM ON REPLACEMENT PARTS LISTS REPRESENTS AT LEAST ONE SOURCE FOR THAT ITEM AND IS LISTED...

Страница 52: ...TIONAL RECT 40RCS10 124 0358 1 CR204 1 RECT SI RECTIFIER 300V 15A INTERNATIONAL RECT 1N3211 124 0164 1 C1 C2 2 CAP CERAMIC 2 2UF 10 50V KEMET C340C225K5R5TA7317 117 1359 1 C201 C202 2 CAP ELECTROLYTIC...

Страница 53: ...R EACH ITEM ON REPLACEMENT PARTS LISTS REPRESENTS AT LEAST ONE SOURCE FOR THAT ITEM AND IS LISTED SOLEY FOR THE CONVENIENCE OF KEPCO EQUIPMENT OWNERS IN OBTAINING REPLACEMENT PARTS LOCALLY WE RESERVE...

Страница 54: ...S LISTED SOLELY FOR THE CONVENIENCE OF KEPCO EQUIPMENT OWNERS IN OBTAINING REPLACEMENT PARTS LOCALLY WE RESERVE THE RIGHT TO USE EQUIVALENT ITEMS FROM ALTERNATE SOURCES KEPCO INC KEPCO REPLACEMENT PAR...

Страница 55: ...SKA221M016AT 117 0512 1 C4 1 CAP MYLAR METALLIZED 0 1UF 5 250V VISHAY ROEDERST MKT1813 410 254 G 117 0363 1 C5 1 CAP ELECTROLYTIC AX LEADS 220UF 20 25V ILLINOIS CAPACITOR 227TTA025M 117 0713 1 C6 8 12...

Страница 56: ...19 0060 1 Q2 1 TRANSISTOR SI NPN SMALL SIG NAL RAYTHEON MFG 1190094 119 0094 1 Q3 Q4 2 TRANSISTOR SI NPN SMALL SIG NAL CENTRAL SEMICOND 2N5449 119 0093 1 R1 R18 2 RES FIX CARBON FILM 10 OHM 1 4W 5 IRC...

Страница 57: ...ISHAY DALE CCF 55 1000 F R36 115 2598 1 R23 1 RES FIX PRECISION METAL FILM 1 1 KOHM 1 4W 1 IRC CES RN60D1101F 115 1860 1 R25 1 RES FIX POWER AX LEADS 1 5 KOHM 3W 5 VISHAY DALE CW02B1K500JE70 115 1189...

Страница 58: ...PLACEMENT PARTS LISTS REPRESENTS AT LEAST ONE SOURCE FOR THAT ITEM AND IS LISTED SOLELY FOR THE CONVENIENCE OF KEPCO EQUIPMENT OWNERS IN OBTAINING REPLACEMENT PARTS LOCALLY WE RESERVE THE RIGHT TO USE...

Страница 59: ...PRESENTS AT LEAST ONE SOURCE FOR THAT ITEM AND IS LISTED SOLELY FOR THE CONVENIENCE OF KEPCO EQUIPMENT OWNERS IN OBTAINING REPLACEMENT PARTS LOCALLY WE RESERVE THE RIGHT TO USE EQUIVALENT ITEMS FROM A...

Страница 60: ...ENT OWNERS IN OBTAINING REPLACEMENT PARTS LOCALLY WE RESERVE THE RIGHT TO USE EQUIVALENT ITEMS FROM ALTERNATE SOURCES KEPCO INC KEPCO REPLACEMENT PARTS LIST FIGURE 7 4 JQE 25 20MVPY 27274 A3A1 ASSEMBL...

Страница 61: ...VENIENCE OF KEPCO EQUIPMENT OWNERS IN OBTAINING REPLACEMENT PARTS LOCALLY WE RESERVE THE RIGHT TO USE EQUIVALENT ITEMS FROM ALTERNATE SOURCES KEPCO INC SVC09 2611 7 13 KEPCO REPLACEMENT PARTS LIST FIG...

Страница 62: ...G REPLACEMENT PARTS LOCALLY WE RESERVE THE RIGHT TO USE EQUIVALENT ITEMS FROM ALTERNATE SOURCES KEPCO INC KEPCO REPLACEMENT PARTS LIST FIGURE 7 6 JQE 25 20MVPY 27274 A4 ASSEMBLY COMPONENT LOCATIONS CR...

Страница 63: ...17 1053 1 C12 1 CAP TANTALUM 4 7UF 10 15V VISHAY SPRAGUE 173D475X9015V 117 1112 1 C13 1 CAP CERAMIC 1000PF 10 200V VISHAY BC A102K15X7RK5 UAA 117 1084 1 C14 1 CAP CERAMIC 1UF 10 50V VISHAY CERA MIT K1...

Страница 64: ...METAL FILM 49 9 KOHM 1 8W 1 VISHAY DALE CMF5549K900FEEA 115 2755 1 R10 1 RES FIX PRECISION METAL FILM 7 5 KOHM 1 4W 1 IRC CES RN60D7501F 115 1853 1 R11 1 RES FIX PRECISION METAL FILM 4 99 KOHM 1 8W 1...

Страница 65: ...2N3773 R312 22 A B A2 TB201 A2 C205 CC_RS VRS RET_RES HS_DRV VDRV VDRV_RT OUT_MON OUT_MON CHASSIS_GND Er IS D CIRCUIT BREAKER FRONT PANEL A2 CHASSIS LEVEL FP FRONT PANEL LEVEL MAIN POWER TRANSFORMER...

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Страница 67: ...3 74K C28 1 0 C31 1 0 C30 15n C29 33n R16 2K 1 3 CW 2 R15 6 65K R18 10 TP2 1 2 R47 2K 1 3 CW 2 TP1 1 2 R46 19 1K R11 130 CR10 200V 1A 2 1 4 3 R48 10K TP3 1 2 CR14 200V 1A 2 1 4 3 R8 9 4 PTC IC1 LT100...

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Страница 69: ...8 4 R C 403 10K 1 3 CW 2 R20 2K TP8 1 2 R6 2 49K R3 4 02K R2 510 R9 49 9K R10 7 5K A B RN2 40K A 10K B IC2 LT1006 3 2 6 7 8 4 5 1 C4 0 1 C 4 R11 4 99K R12 1K R19 150 C2 0 1 C12 4 7 CR14 1N5297 C14 1...

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