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KEPCO JQE 25-20MVPY-27274 Instruction Manual

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INSTRUCTION MANUAL
KEPCO INC.
An ISO 9001 Company.
IMPORTANT NOTES:
1)
This manual is valid for the following Model and associated serial numbers:
MODEL
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.
©2011, KEPCO, INC.
P/N 243-1333-b
KEPCO, INC.
JQE 25-20MVPY-27274
POWER SUPPLY
JQE 25-20MVPY-27274
POWER SUPPLY
INSTRUCTION MANUAL
ORDER NO.
SERIAL NO.
131-38 SANFORD AVENUE
FLUSHING, NY. 11355 U.S.A.
email: hq@kepcopower.com
MODEL
REV. NO.
REV. NO.
KEPCO
THE POWER SUPPLIER™
TEL (718) 461-7000
World Wide Web: http://www.kepcopower.com
®
FAX (718) 767-1102

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Summary of Contents for KEPCO JQE 25-20MVPY-27274

  • Page 1 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.

  • Page 3: Declaration Of Conformity

    93/68/EEC (CE mark) Standard to which Conformity is declared: EN61010-1:2001 (Safety requirements for electrical equipment for measurement, control and laboratory use - Part 1) KEPCO INC. Manufacturer's Name and Address: 131-38 SANFORD AVENUE FLUSHING, N.Y. 11352 USA Importer's Name and Address:...
  • Page 4 There are no user or operator serviceable parts within the product enclosure. Refer all servicing to qualified and trained Kepco service technicians. 228-1351 COND/CONFORM 092611...

  • Page 5: Safety Instructions

    SAFETY INSTRUCTIONS 1. Installation, Operation and Service Precautions This product is designed for use in accordance with EN 61010-1 and UL 3101 for Installation Category 2, Pollution Degree 2. Hazardous voltages are present within this product during normal operation. The prod- uct should never be operated with the cover removed unless equivalent protection of the operator from accidental contact with hazardous internal voltages is provided: There are no operator serviceable parts or adjustments within the product enclosure.

  • Page 7: Table Of Contents

    Grounded Load Connection....................... 3-2 Output Adjustment........................... 3-3 Introduction to Remote Programming ..................... 3-3 3.4.1 General .............................. 3-3 3.4.2 Equations Showing the Operation of the Kepco Bridge..............3-5 General Rules for Remote Programming ....................3-6 3.5.1 Grounding ............................3-6 3.5.2 Connections............................3-6 3.5.3...
  • Page 8 Required Test Equipment......................... 6-4 6.4.2 Measurement Instructions......................... 6-5 SECTION 7 - ELECTRICAL PARTS LIST AND DIAGRAMS General ..............................7-1 Ordering Information..........................7-1 Abbreviations Used in Kepco Parts Lists....................7-2 7.3.1 Reference Designators ........................7-2 7.3.2 Descriptive Abbreviations ......................... 7-2 27274092611...
  • Page 9 Remote Resistance Programming (Voltage Mode)..................3-7 JQE Special Power Supply, Simplified Schematic Diagram ............... 5-2 A1 PC Board, Reassembly ......................... 6-1 JQE 25-20MVPY-27274 Power Supply, Component Locations ..............7-3 JQE 25-20MVPY-27274 A1 Assembly, Component Locations..............7-6 JQE 25-20MVPY-27274 A3 Assembly, Component Locations..............7-11 JQE 25-20MVPY-27274 A3A1 Assembly, Component Locations ..............
  • Page 10 LIST OF TABLES TABLE TITLE PAGE JQE 25-20MVPY-27274 Specifications ...................... 1-2 Front Panel Controls and Indicator Functions .................... 2-1 Rear Panel Termination Functions ......................2-2 Internal Adjustments ........................... 2-3 Auxiliary Supply Voltages ........................... 6-3 27274092611...

  • Page 11: Section 1 - Introduction

    Kepco JQE 25-20MVPY-27274, “HALF-RACK” Power Supply, manufactured by Kepco, Inc., Flushing, New York, U.S.A. This model is hereafter referred to as JQE Special Power Supply or JQE Special. Additional copies of this manual can be downloaded from the Kepco web site at http://www.kepcopower.com/support/opmanls.htm#jqe.

  • Page 12: Accessories

    ACCESSORIES a) RACK ADAPTOR (for two units); Kepco Model RA 24. Fits standard EIA rack-dimen- sions. b) FILLER PANEL, to cover empty slot if RA 24 is used for one unit only: Kepco Model RFP 24-2. SPECIFICATIONS TABLE 1-1. JQE 25-20MVPY-27274 SPECIFICATIONS...

  • Page 13: Jqe 25-20Mvpy-27274 Specifications

    TABLE 1-1. JQE 25-20MVPY-27274 SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITIONS/NOTES Output Power 500W µ µ Output Impedance Voltage Mode Ohms / 0.5 Current Mode 25KOhms / 5.8 mF µ Voltage Recovery Time S max With load between No load and Full load, Output voltage in Volt- age mode.

  • Page 14: Specifications, Mechanical

    TABLE 1-1. JQE 25-20MVPY-27274 SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITIONS/NOTES Dimensions 8.344" x 5.219" x 17.584" (WxHxL) See Mechanical 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...
  • Page 15 OVP DELAY ADJ. OVP ADJ. 2953-2 FIGURE 1-1. MECHANICAL OUTLINE DRAWING 1-5/(1-6 Blank) JQE 27274 092611...

  • Page 17: Section 2 - Installation

    SECTION 2 - INSTALLATION UNPACKING AND INSPECTION This instrument has been thoroughly inspected and tested prior to packing and is ready for operation. After careful unpacking, inspect for shipping damage before attempting to operate. Perform the preliminary operational check as outlined in PAR. 2.5. If any indication of damage is found, file an immediate claim with the responsible transport service.

  • Page 18: Rear Panel Terminations, Jqe Special Models

    b) Rear Panel: Refer to Figure 2-2 and Table 2-3. FIGURE 2-2. REAR PANEL TERMINATIONS, JQE SPECIAL MODELS TABLE 2-2. REAR PANEL TERMINATION FUNCTIONS INDEX NO. TERMINATION FUNCTION (FIGURE 2-2) Rear Barrier Strip (TB Sense/Monitoring/programming Terminals 501) (1) +OUTPUT MONITOR (2) +SENSE (3) –OUTPUT MONITOR (4) –SENSE...

  • Page 19: Ac Input Requirements

    c) Internal Adjustments and Calibrations: Refer to Figure 2-3 and Table 2-3. OVP DELAY ADJ. (A4 R(C) 403) OVP ADJ. (A4 R415) ZERO ZERO ZERO FIGURE 2-3. LOCATION OF INTERNAL ADJUSTMENTS TABLE 2-3. INTERNAL ADJUSTMENTS REFERENCE ADJUSTMENT CONTROL PURPOSE DESIGNATION PROCEDURE A4R(C)403 OVP DELAY ADJ...

  • Page 20: Cooling

    FIGURE 2-4. CONVERSION TO 230V AC LINE OPERATION COOLING The power transistors and rectifiers in this power supply are maintained within their operating temperature range by means of a high efficiency heat-sink assembly, coded by an internal fan. SIDE PANEL OPENINGS AND THE TOP OF THE CASE MUST BE KEPT CLEAR FROM OBSTRUCTIONS TO INSURE PROPER AIR CIRCULATION.

  • Page 21: Installation

    Turn the OVP ADJ pot 1/4 turn clockwise. Turn AC POWER circuit breaker “on” and verify that the unit stays on. 7. Turn AC POWER circuit breaker “off.” Place a 4-terminal precision shunt across the power output terminals (2, 3 Figure 2-2). Connect the DVM to the shunt’s sensing terminals (DVM return to the sensing terminal of the shunt that is connected to –OUTPUT power terminal at TB501).

  • Page 23: Section 3 - Operation

    SECTION 3 - OPERATION STANDARD POWER SUPPLY OPERATION, LOCAL CONTROL 3.1.1 GENERAL The Power Supply is shipped from the factory with five (5) removable jumper links in place at the rear barrier strip TB501 as shown in FIG. 3-1, THESE LINKS MUST BE IN PLACE AND SECURED TIGHTLY for standard local operation.

  • Page 24: Remote Error Sensing

    3.2.2 REMOTE ERROR SENSING (SEE FIGURE 3-1B.) Remove the links between terminals (1) and (2) and between terminals (3) and (4) of TB501 at the rear panel. Specified regulation performance DIRECTLY AT THE LOAD requires the use of remote error sensing. A twisted, pair of wires from the sensing terminals directly to the load will compensate for load wire voltage drops up to 1.0 volt per wire (Refer to Figure 3-1B).

  • Page 25: Output Adjustment

    A few general remarks may be in order to familiarize the user of this equipment with the termi- nology and basic equations pertaining to remote programming of Kepco Power Supplies. Elec- trically, the power supply, consists of the unregulated DC source (E...

  • Page 26: Comparison Bridge (Simplified) For Voltage Mode

    = BRIDGE CURRENT NULL JUNCTION REFERENCE VOLTAGE RESISTOR CONTROL RESISTOR VOLTAGE ERROR AMPLIFIER UNREGULATED SOURCE OUTPUT REFERENCE VOLTAGE VOLTAGE PASS - ELEMENT INTERNAL COMMON POINT FIGURE 3-3. COMPARISON BRIDGE (SIMPLIFIED) FOR VOLTAGE MODE A similar bridge representing power supply operation in CURRENT LIMIT mode is shown in Fig- ure 3-4 = BRIDGE CURRENT NULL JUNCTION...

  • Page 27: Equations Showing The Operation Of The Kepco Bridge

    T.C. of 20 ppm or better. Similar relationships can be described for operation in Current Limit mode. The following rela- tionships govern the operation of the Kepco Bridge at balance in current mode, i.e., with VAA’ = I O R S K S...

  • Page 28: General Rules For Remote Programming

    R CF The ratio of termed the “CONTROL RATIO,“ gives the current (in mA) needed to obtain --------------- K S R S one Ampere of output current where R is in Ohms and R is in KOhms. GENERAL RULES FOR REMOTE PROGRAMMING All remote programming applications require the observance of a few basic rules to insure proper functioning of the power supply in the particular mode of operation selected.

  • Page 29: Constant Current Operation

    Volt which can then be used to program a specific output voltage based on a specific resistance of the external variable resistor. To set an output voltage using an external programming resistor, proceed as follows: 1. Determine value of programming resistor(s) for output voltage desired. 2.

  • Page 31: Section 4 - Calibration

    SECTION 4 - CALIBRATION GENERAL It is recommended that both output voltage and output current limit calibrations be performed in sequence, however it is permissible to do only one if the other is known to be calibrated. Required test equipment is listed in PAR. 4.2. See Table 2-3 and Figure 2-3 for descriptions and locations, respectively, of the calibration adjustments.

  • Page 32: Zero Output Voltage Calibration

    4.3.2 ZERO OUTPUT VOLTAGE CALIBRATION Zero Output voltage is calibrated for either the local front panel VOLTAGE control (PAR 4.3.2.1) or an external resistance used for remote programming of output voltage (4.3.2.2). 4.3.2.1 ZERO OUTPUT VOLTAGE (LOCAL PROGRAMMING) CALIBRATION NOTE: In effect only for local operation. The following procedure calibrates the front panel VOLTAGE control for 0V output when set to minimum.

  • Page 33: Zero Current Monitor Calibration

    4.3.4 ZERO CURRENT MONITOR CALIBRATION At the rear panel, connect DVM between pin 1 and pin 6 (DVM return) of the MONITOR PORT connector. Adjust C.MON ZERO potentiometer (accessible through top cover) until DVM reads 0V (tolerance: 0 to +1mV). 4.3.5 LOCAL FULL SCALE (FS) OUTPUT VOLTAGE CALIBRATION NOTE: In effect only for local operation.

  • Page 34: Output Current Limit Calibration

    OUTPUT CURRENT LIMIT CALIBRATION Output current limit calibration consists of the following procedures: Pre-Calibration setup (PAR. 4.4.1), Full Scale (maximum) Output Current Limit (PAR. 4.4.2), Full Scale Current Monitor (PAR. 4.4.3) and Minimum Output Current Check (PAR. 4.4.4). 4.4.1 CURRENT LIMIT PRE-CALIBRATION SETUP Current measurements are made by measuring the voltage drop across the sense resistor (see PAR.

  • Page 35: Minimum Output Current Check

    4.4.4 MINIMUM OUTPUT CURRENT CHECK Adjust I control to full counterclockwise position. Verify that output current is 0.1A ±10mA. OVERVOLTAGE PROTECTION (OVP) TEST AND ADJUSTMENT Use the VOLTAGE control at the front panel to set the output voltage to the desired voltage as measured by either the front panel voltmeter or by an external DVM.

  • Page 37: Section 5 - Theory Of Operation

    SECTION 5 - THEORY OF OPERATION SIMPLIFIED DIAGRAM DISCUSSION Referring to Figure 5-1, the Main Power Transformer and Auxiliary Power Transformer convert the line voltage to the required levels needed to produce the d-c operating voltages for the Main and Auxiliary Supplies after passing through the Rectifier and Filter stages. The main power supply is in series with the pass elements and the Current Sensing Resistor (R ) and produces the output voltage.The main pass elements are changing their series resistance to keep the out-...

  • Page 38: Jqe Special Power Supply, Simplified Schematic Diagram

    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 DIAGRAM JQE SPECIAL SVC 092611...

  • Page 39: Main D-C Supply

    Since the primary coil of the AUXILIARY POWER TRANSFORMER (T202) is in parallel with the secondary for the overvoltage protection circuit, any failure in the auxiliary circuits, reflecting back to the primary of the auxiliary power transformer (T202) will also activate the sensing coil of CB101 and shut down the power supply.

  • Page 40: Current Limit Circuit (Cea)

    The output voltage zero (offset) value can be calibrated using potentiometer A1R3, while the full scale value can be calibrated using potentiometer A1R16. Both calibration potentiometers can be accessed through a slot in the top cover. 5.2.5 CURRENT LIMIT CIRCUIT (CEA) The differential input of the current sensing amplifier, A1IC3, is connected to the current sensing resistor (R = R203).

  • Page 41: Metering Circuit

    to A1CR18, provides the operating voltage for the amplifiers (±15V) and +6.2V reference volt- age. PRE-DRIVER POWER SUPPLY. A full-wave-rectified (A1CR10) and capacitor-filtered (A1C10) supply is derived from a secondary winding on T202. It delivers supply voltage to the pre-driver stage A1Q2.

  • Page 43: Section 6 - Maintenance

    SECTION 6 - MAINTENANCE GENERAL This section covers maintenance procedures, installation of optional components, calibration and test measurements of the JQE Special Power Supplies. Conservative rating of components and the non-congested layout should keep maintenance problems to a minimum. If trouble does develop however, the easily removed wrap-around cover and the plug-in feature of the circuit boards provide exceptional accessibility to all components of the supply.

  • Page 44: A5 Terminal Block Board And Cr203 And Cr204 Access

    6.2.3 A5 TERMINAL BLOCK BOARD AND CR203 AND CR204 ACCESS Separate rear panel from the chassis by removing three screws at the bottom of the rear panel. Now the rear panel can be tilted for access to the A5 board as well as to the rear panel compo- nents CR203 and CR204.
  • Page 45 TABLE 6-1. AUXILIARY SUPPLY VOLTAGES MEASUREMENT JQE 25-20MVPY- NOTES POINT 27274 A1C19 (+) +39V ±1.8V Referenced to a1C19 (–) A1TP4 +15V ±0.5V Referenced to A1TP2 A1TP5 –15V ±0.75V Referenced to A1TP2 A1TP3 +6.2V ±0.3V Referenced to A1TP2 A1C10 (+) +12.4V ±0.5V Referenced to A1C10 (–) A1CR7 cathode +6.5V ±0.3V...

  • Page 46: Power Supply Measurements

    Twisted load wires of sufficient diameter and held as short as practical, are often the solution to the problem. 7. Kepco Application Engineers are available for consultation or direct help in difficult service or application problems. POWER SUPPLY MEASUREMENTS Measurement of the significant parameters of a power supply is a requirement for incoming inspection, periodic maintenance, or after component replacement.

  • Page 47: Measurement Instructions

    6.4.2 MEASUREMENT INSTRUCTIONS a. Output Voltage Measurement. The principle governing this method of measurement is sim- ple: DO NOT MEASURE ANY VOLTAGE DROPS DUE TO LOAD CURRENT FLOW. This can only be avoided by measuring regulation directly at the sensing leads. b.

  • Page 49: Section 7 - Electrical Parts List And Diagrams

    This section contains the schematic diagrams, the parts location diagrams, and a list of all replaceable electrical parts. All components are listed in alpha-numerical order of their refer- ence designations. Consult your Kepco Representative for replacement of parts not listed here. ORDERING INFORMATION...

  • Page 50: Abbreviations Used In Kepco Parts Lists

    ABBREVIATIONS USED IN KEPCO PARTS LISTS 7.3.1 REFERENCE DESIGNATORS = Assembly FX = Fuse Holder = Meter = Blower (Fan) = Integrated Circuit = Plug = Capacitor = Jack = Transistor CB = Circuit Breaker = Relay = Resistor CR = Diode...

  • Page 51: Jqe 25-20Mvpy-27274 Power Supply, Component Locations

    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 SOLEY 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.
  • Page 52 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 SOLEY 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.
  • Page 53 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 SOLEY 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.

  • Page 54: Jqe 25-20Mvpy-27274 A1 Assembly, Component Locations

    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 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.
  • Page 55 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 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.
  • Page 56 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 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.
  • Page 57 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 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.
  • Page 58 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 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.

  • Page 59: Jqe 25-20Mvpy-27274 A3 Assembly, Component Locations

    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 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.

  • Page 60: Jqe 25-20Mvpy-27274 A3A1 Assembly, Component Locations

    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 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.

  • Page 61: Jqe 25-20Mvpy-27274 A3A2 Assembly, Component Locations

    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 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.

  • Page 62: Jqe 25-20Mvpy-27274 A4 Assembly, Component Locations

    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 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.
  • Page 63 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 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.
  • Page 64 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 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.
  • Page 65 A2-T202 AUX.TRANSFORMER A2- CHASSIS LEVEL "ohms" and Capacitor values in FP-R101 FP-R102 otherwise specified. FP- FRONT PANEL LEVEL for the components marked with BP- BACK PANEL LEVEL pin 1- 2 and between pin 3- 4 the PS in local error sensing. emote error sensing (=Kelvin pin 5- 6- 7 (factory default) l Voltage Control.
  • Page 67 P2 @ J204 RET_RES RETURN CC_RS +VDRV -OUT_MON +VRS +SENSE_RES VDRV_RT HS_DRV CURR_CTRL_WP +6.2V CC RETURN CHASSIS_GND +OUT_MON 9.4/ PTC 1240178 RETURN 2.7K VOLTAGE ERROR AUX. PS 1240178 AMPLIFIER +15V 1N4148 1240178 6.5V LT1007 9.4/ PTC 1N4148 1240178 1N4148 200V/1A 2N3054 OUT POWER-SENSE NETWORK...
  • Page 69 +15V OVP CIRCUIT +6.5V J207 AC1_OVP CR402 AC2_OVP 200V/8A 4.02K CR203_G GATE CR203_K -SENSING TL431 +SENSING NOTE: 200V/1A Resistor values in "ohms" and C in "microfarads", unless otherw 2.49K R7 10 4.7V LOC_RET © 0.047 0.001 40K(A)/10K(B) 100K 100K +15V +15V +15V LT1006...

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