Lucent Technologies Lineage 2000 J85502A-1 Product Manual
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Lucent Technologies Lineage 2000 J85502A-1 Product Manual

Lucent Technologies Lineage 2000 J85502A-1 Product Manual

25-ampere, 60-hertz ferroresonant rectifier
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Product Manual
J85502A-1
Select Code 169-790-122
Comcode 107176349
Issue 4
May 1998
©1998 Lucent Technologies
All Rights Reserved
Printed in U.S.A.
Ferroresonant Rectifier
Notice:
Every effort was made to ensure that the information in this
document was complete and accurate at the time of printing.
However, information is subject to change.
Lucent Technologies
Lineage
25-Ampere, 60-Hertz
®
2000

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Summary of Contents for Lucent Technologies Lineage 2000 J85502A-1

  • Page 1 25-Ampere, 60-Hertz Ferroresonant Rectifier Notice: Every effort was made to ensure that the information in this document was complete and accurate at the time of printing. However, information is subject to change. ©1998 Lucent Technologies All Rights Reserved Printed in U.S.A.

  • Page 2: Table Of Contents

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Table of Contents 1 Introduction General Information 1 - 1 Customer Service 1 - 1 Technical Support 1 - 2 Product Repair and Return 1 - 2 2 Product Description Overview...
  • Page 3 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 AC Input Power 5 - 2 DC Output Power 5 - 5 Installation Tools 5 - 5 Unpacking 5 - 5 Installing or Adding a Rectifier 5 - 6 Installing AC Power Cables...
  • Page 4 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 7 Troubleshooting and Adjustments Introduction 7 - 1 Removing a Rectifier from Service 7 - 1 Diagnostics and Troubleshooting 7 - 2 Adjustments 7 - 5 Clear Rectifier Failure Alarm (RFA)
  • Page 5 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 List of Figures Figure 2-1: Control Panel of J85502A-1 Rectifier 2 - 7 Figure 2-2: Signal Flow between Rectifier and Lucent Technologies Controller 2 - 9 Figure 5-1: Four Views of the J85502A-1 25-ampere...
  • Page 6 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 List of Tables Table 2-A: Digital Meter Accuracy 2 - 7 Table 2-B: Physical and Thermal Specifications of the J85502A-1 Rectifier 2 - 10 Table 2-C: Input Specifications for the J85502A-1...
  • Page 7 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Table 8-B: Modifications for the CM1 Option Board 8 - 4 Table 8-C: Spare Fuse Information 8 - 4 Table 8-D: Torque and Minimum Yield Strength for Mechanical Connections (Using Hex Head Cap...

  • Page 8: Introduction

    ® The J85502A-1 rectifier can be used with a Lineage 2000 battery plant, older vintage Lucent Technologies battery plants, or any commercial battery plant. With certain options, it can also operate off battery. Customer For customers in the United States, Canada, Puerto Rico, and the US Virgin Islands, call 1-800-THE-1PWR (1-800-843-1797).

  • Page 9: Technical Support

    For other customers worldwide, contact your local field support center or your sales representative to discuss your specific needs. Product Repair Repair and return service is provided for Lucent Technologies customers around the world. For customers in the United States, and Return...

  • Page 10: Product Description

    Canadian Standards Association (CSA) certified. The rectifier uses controlled ferroresonant technology, which reduces noise and transients from commercial lines. All components in the rectifier meet Lucent Technologies' strict specifications and reliability standards. The rectifier uses an extremely efficient free-convection cooling system that keeps components operating at temperatures well below the recommended maximum, resulting in high reliability.

  • Page 11: Ferroresonant Technology

    Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Technologies has organized into numbered lists to simplify ordering. Ferroresonant The J85502A-1 rectifier is a member of the Lucent Technologies ® family of Lineage 2000 ferroresonant rectifiers. Like all the Technology rectifiers in the family, it represents a significant advancement in efficiency, space savings, and serviceability.
  • Page 12 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 the starting surge on the customer’s power source and is especially important with a more limited power source, such as an emergency generator set. • Internal selective high voltage shutdown: If the rectifier voltage goes too high, and it is delivering at least 10 percent of its rated output current, the rectifier shuts down.

  • Page 13: Additional Features

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 provides an isolated 2- to 10-volt signal, corresponding to a range of no-load to 125 percent of rated output load, which is used to indicate the rectifier drain on the controller.

  • Page 14: Circuit Modules

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 point voltage remains within 5 percent of its setting, and returns and remains in the 1/2 percent band within 300 milliseconds. For batteryless operation, for any step load change of 50 to 90...

  • Page 15: Front Panel Controls And Indicators

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Remote shutdown Internal selective high voltage shutdown (ISHVSD) Restart feature Limited output alarm (LOA) Fuse alarm Electronic current limit Output current isolation circuit • The CM3 circuit module (207A meter board) controls the digital Output meter on the control panel of List 10 rectifiers.

  • Page 16: Figure 2-1: Control Panel Of J85502A-1 Rectifier

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 OUTPUT RECT V OUTPUT VOLTS ADJ AMPS OUTPUT – BATT V POWER RECT ALARM TEST 1/2 AMP Figure 2-1: Control Panel of J85502A-1 Rectifier Table 2-A: Digital Meter Accuracy Meter Position Accuracy ±0.5 volt for Series 1 or 2 CM3 digital meter...

  • Page 17: Alarm And Control Flow

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 switch turns the rectifier on and off. When the switch is in the Off position, the rectifier cannot be turned on by the plant controller. When the switch is in the On position, an MCS controller can remotely turn the rectifier on or off to satisfy the plant load current requirements.

  • Page 18: Physical, Thermal, And Electrical Specifications

    * Plant Control Cable Assembly is manufactured by Lucent Technologies and must be ordered separately. ® See Lineage 2000 Battery Plant documentation for details. Figure 2-2: Signal Flow between Rectifier and Lucent Technologies Controller Physical, Tables 2-B, 2-C, and 2-D give the physical, thermal, and ®...

  • Page 19: Table 2-B: Physical And Thermal Specifications

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Table 2-B: Physical and Thermal Specifications of the J85502A-1 Rectifier Output DC ±24V Output DC ±48V Dimensions 23.25 wide x 7 tall x deep (inches) Weight (pounds) Heat dissipation* BTU/hr at full load...

  • Page 20: Ordering Information

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Ordering Information ® Equipment Lists Table 3-A shows the available equipment lists for the Lineage 2000 J85502A-1 rectifier. List 1 or 2 and either List E or F are required depending on the choice of input and output voltages.

  • Page 21: Documentation

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Documentation This document is part of a set of documents developed to assist equipment engineering and installation. Table 3-B: Document References Document No. Document Description Assembly, Ordering, and Installation J85502A-1 Drawing...

  • Page 22: Safety

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Safety Please read this section carefully before installing, maintaining, or repairing the J85502A-1 rectifier. Admonishments Always take precautions to protect personal safety as well as the equipment when working on power systems. Throughout this manual, admonishments relating to personal safety are labeled DANGER or Warning.

  • Page 23: Precautions

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 National Electric Code (NEC) and/or local codes. The size of the overcurrent protector used must not exceed 80% of the value of the protector chosen. • An accessible ac disconnect/protection device to remove ac power from the equipment in the event of an emergency must be provided.
  • Page 24 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 batteries or the batteries are not connected to the output of the equipment. • AC voltage may be present in the unit even when the POWER switch is in the Off position.

  • Page 25: Warning Statements And Safety Symbols

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 • In addition to proper job training and safety procedures, always follow these basic precautions: – Use only properly insulated tools. – Remove all metallic objects (key chains, glasses, rings, watches, or any other jewelry).
  • Page 26 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 This symbol (or equivalent) is used to identify the presence of hazardous ac mains voltage. This symbol is used to identify the presence of hazardous ac or dc voltages. It may also be used to warn of hazardous energy levels.
  • Page 27 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 These symbols are used to identify the safety earth ground or bonding point for the equipment. 4 - 6 Safety Issue 4 May 1998...

  • Page 28: Installation

    Lucent Technologies offers “turn-key” engineering and installation services for the products described in this product manual. Consult your Lucent Technologies representative for details.

  • Page 29: Bay Mounting

    Rectifiers ordered as individual units are shipped in individual containers. The rectifiers mount in Lucent Technologies 26-inch wide bays, with 24-5/16 inch mounting centers. The bays have drilled holes on 1-inch centers, in the vertical plane, to accommodate #12-24 threads per inch self-tapping screws.

  • Page 30: Figure 5-1: Four Views Of The J85502A-1 25-Ampere

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Lifting Eyebolts 12" 5" 25" 24.31" 23.25" Left Side Right Side 7" Front 3" AC Input Plant Control DC Output Hole Holes for Mounting Hole Cable Hole Screws that Attach Plant Control...

  • Page 31: Table 5-A: Ac Input Requirements

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Table 5-A shows the recommended customer-supplied fuse size and type for the branch circuit protection in the ac service panel supplying input to the rectifier. The types shown are Bussmann (a trademark of the Bussmann Company) fuses. Equivalent UL listed fuses or circuit breakers can be used in lieu of those shown.

  • Page 32: Dc Output Power

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 DC Output Power The majority of dc power plants for telecommunication applications are designed to use single conductor cables (in parallel for current capacity or to limit voltage drop) supported on ladder racks. Experience has shown that the use of flexible cables (welding type cables) makes installation of this type wiring much simpler.

  • Page 33: Installing Or Adding A Rectifier

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 5. With rectifier lying on its back, open the front door and visually inspect for shipping damage. 6. If material is damaged, contact shipping company and process claims form. 7. Verify that the main ac voltage at the distribution panel agrees with the List options specified on the label inside the front door of the rectifier.

  • Page 34: Installing Dc Power Cables

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 4. Install two input conductors and frame ground conductor at the ac service panel, and route the conductors to the rectifier. 5. Strip the ends of conductors that will be installed in the rectifier.
  • Page 35 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 on TB3 in the rectifier. DC return (ground) is positive for negative output voltage plants, and negative for positive output voltage plants. Torque connection to 30 in-lb. 7. Remove tape or insulation from connector at other end of cable and terminate on plant ground bus bar.
  • Page 36 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 4. If the controller is an MCS, cut leads TP0 and TP2 (pin numbers 21 and 19) in the controller end of the cable (see your controller manual). This signals to an MCS that the rectifier is a 25A.

  • Page 37: Converting Ac Voltage (Optional)

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 7. Dress and tie down the cable to provide stress relief at the connector. The rectifier is now installed. The last two sections in this chapter are optional procedures that may be needed at installation.

  • Page 38: Table 5-C: Rectifier Settings For Initial Battery

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 The J85502A-1 rectifier is capable of supplying a new battery string with its initial charge. Since the voltage levels recommended by battery manufacturers for initial battery charging are considerably above the normal plant voltage,...
  • Page 39 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Note If the rectifier continues to operate, proceed to Step 5. If the rectifier shuts down due to initial high voltage, monitor the RECT V voltage. When this reading reaches 26 volts for 24-volt plants, or 52 volts for 48-volt plants, turn On the DC OUTPUT circuit breaker on the rectifier.

  • Page 40: Testing

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Testing Introduction This section gives test procedures for newly installed and/or operating rectifiers. If the plant in which a rectifier is being installed has never been operational, the plant and controller tests must be performed before the rectifier tests.

  • Page 41: Tools And Test Equipment

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 +27V Red Test Clip To P2A-5 of CM2 To P2A-25 of CM2 2150 1 WATT To P2A-16 of CM2 2150 1 WATT To P2A-4 of CM2 2150 2150 1 WATT PH or LOA...

  • Page 42: Battery Plant Simulator Test Set

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 • Straightened paper clip inserted in eraser of wooden pencil Battery Plant The Battery Plant Simulator Test Set is a convenient tool used to Simulator Test isolate communication troubles between the plant controller and the rectifier.

  • Page 43: Preparation For Testing Off Line

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 7. Disconnect J2A from CM2 by unlatching first, then pulling the cable connector. 8. Connect the test load to the + and - output terminals on TB3 in the rectifier. 9. Install the regulation (REG) fuse associated with the rectifier in the plant controller.
  • Page 44 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 3. Using the digital multimeter (DMM) on the dc volts scale, check the plant control cable: Verify that battery voltage, via the controller, is present between positions 1 and 2 on TB3 (see Figure 5-2).

  • Page 45: Figure 6-2: Cm1 Option Board

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Table 6-B: Test Set Connections Figure Test Clip Connection Voltage Positive side of capacitor C1 on CM2 (205A1 or 205B) board Negative side of capacitor Black C1 on CM2 (205A1 or...

  • Page 46: Testing Off Line

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Figure 6-3: CM2 Control Board Showing Test Clip Connections and Other Component Detail Testing Off The following tests involve use of the test load and a Battery Plant Simulator Test Set. Refer to the paragraphs above headed Line “Battery Plant Simulator Test Set,”...
  • Page 47 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 3. Set the test meter to the 100 volts range, and connect it to the REG jacks on the bracket of CBA1. These jacks are the same as on the rectifier control panel when the door is closed (see Figure 2-1).

  • Page 48: Current Limit Test (Off Line)

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 6. Repeat Steps 4 and 5 for E14 and E2, E14 and E3, and E14 and E4. Current Limit Test (Off Line) Notes Adjust the current limit only after verifying that a current limit problem exists.

  • Page 49: Backup High Voltage Shutdown (Hvsd) Test

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 6. Decrease the load to 24-24.5A, 96 to 98 percent of the rectifier rating. Observe that V is greater than: – 52.03 volts (48-volt rectifier) – 26.01 volts (24-volt rectifier) Backup High 1.

  • Page 50: (Off Line)

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 5. Restart the rectifier using the RS switch on the test set. 6. Adjust the voltage to approximately 26.0 volts (24-volt rectifier) or 52.0 volts (48-volt rectifier). The RFA lamps on the rectifier and the test set should go out.

  • Page 51: Off-Line Test Completion

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Test for 434A or 1. Turn the rectifier On/Off switch to On. Adjust the load 434B Circuit about 20-30% of rectifier rated current capacity. The green Module LED should be on.

  • Page 52: Table 6-C: Rectifier Control Settings Prior To Testing On Line

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Perform all the preliminary checks on the plant before testing the rectifiers. Take the same precautions for personal safety and equipment protection as when testing off line. 1. Verify the ac supply and rectifier controls are as shown in Table 6-C.

  • Page 53: Testing On Line

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Note If the rectifier continues to operate, proceed to the next paragraph. If the rectifier shuts down due to initial high voltage, monitor the RECT V voltage. When this reading reaches 26 volts for 24-volt plants, or 52 volts for 48-volt plants, turn On the circuit breaker.

  • Page 54: Regulation (Nl/Fl) Test (On Line)

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 • Regulation (NL/FL) Test (On Line) • Rectifier Failure Alarm/Fuse Alarm Test (On Line) Current Limit Test (On Line) • Isolated Current Measuring (VI) Test (MCS or Galaxy Controller) • Backup High Voltage Shutdown (HVSD) Test (On Line)

  • Page 55: Current Limit Test (On Line)

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 alarm indicator of the +V fuse inside the door on the control panel. Note that the rectifier shuts down and the RFA LED on the control panel lights. 2. Turn the POWER switch Off, then back On. The RFA LED should go off.

  • Page 56: Isolated Current Measuring (Vi) Test

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 The output current should indicate 25-25.25A, 100 to 101 percent of the rated output current. 3. If the output current is not within 25-25.25A, the current limit needs adjustment. See “Adjust Current Limit” in Section 7.

  • Page 57: Backup High Voltage Shutdown (Hvsd) Test

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 6. If the rectifier drain indication is between 0 and 2% higher than the amperes calculated in Step 4, this procedure is completed. 7. If the rectifier drain indication is between 0 and 2% lower...

  • Page 58: (On Line)

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 List WB, place “Q” and “T” in the normal position, pins 2 and 3. 5. Turn the OUTPUT VOLTS ADJ potentiometer counterclockwise. 6. Restart the rectifier by turning the POWER switch Off then back On.

  • Page 59: Adjusting Rectifiers To Float Voltage

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 6. The OUTPUT meter reading should agree with the test meter within 0.02 volt for Series 3 CM3 boards or within 0.5 volt for Series 1 and 2 CM3 boards. If the reading is not within these limits, refer to “Calibrate CM3 Digital...
  • Page 60 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Adjusting The fastest way to adjust a group of rectifiers to float voltage is Rectifiers to adjust them individually, turning each one Off after Individually adjustment, and turning them all On after the last adjustment. In...
  • Page 61 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 b. If the voltage is too low, turn the OUTPUT VOLTS ADJ potentiometer clockwise on the rectifier with the lowest output current. Check the battery voltage and repeat Steps a and b above until the battery voltage is within the required tolerance of the desired float voltage.

  • Page 62: Troubleshooting And Adjustments

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Troubleshooting and Adjustments Introduction This section provides troubleshooting information and ® adjustment procedures for the Lineage 2000 J85502A-1 rectifier. Whenever working on or near electrically live equipment, observe all safety precautions given in Section 4 and within each procedure.

  • Page 63: Diagnostics And Troubleshooting

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 6. At the rectifier, loosen the locking screws and open the door. 7. Locate the CM2 control board. Caution The REG fuse associated with the rectifier in the plant controller must be removed before cable connector J2A is disconnected or damage to the rectifier circuit pack may result.

  • Page 64: Table 7-A: Troubleshooting

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Table 7-A: Troubleshooting Problem Probable Cause Probable Corrective Action 1. Check for ac input voltage to rectifier. 2. Check for ac voltage on secondary of T2. See SD-82604-01. 1. Rectifier will not 3.

  • Page 65: Figure 7-1: Component Sides Of Cm3 Digital Meter Boards

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Digital Meter Potentiometer Connection for J1B from CM2 Control Board Series 3 Digital Meter Board Connection for J1B from CM2 Control Board Digital Meter Potentiometer Series 1 or 2 Digital Meter Board...

  • Page 66: Adjustments

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Adjustments This section includes procedures to check fuses (Clear RFA), calibrate the digital meter, adjust the isolated current measuring circuit, and adjust the current limit. Clear Rectifier Refer to Figure 2-1.

  • Page 67: Calibrate Cm3 Digital Meter

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 RFA problem has been cleared. Otherwise, continue the procedure. If replacing the CM2 control board does not clear the problem, then windings 11 and 12 of T1 may be open. Try the following: –...
  • Page 68 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 3. If a Series 3 CM3 board is provided, skip to Step 5. 4. For Series 1 or 2 CM3 boards, remove the board from the two support standoffs and the switch bezel by using a small flat-bladed screwdriver to unlatch the bezel clips from the switch and push in the latches on each standoff.

  • Page 69: Table 7-B: Digital Meter Tolerance

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Table 7-B: Digital Meter Tolerance Meter Position Tolerance ±0.5 volt for Series 1 or 2 CM3 RECT V boards ±0.02 volt for Series 3 CM3 boards AMPS ±2.5 percent of rectifier rating* Notes: To compare, measure the shunt voltage.

  • Page 70: Adjust Internal Selective Hvsd

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Figure 6-3 shows test points and components on the CM2 control board. Other “E” test points are always positive with respect to either E14 or E15 for all voltage measurements. The plant control cable connector J2A MUST be connected to P2A on CM2 for this procedure.

  • Page 71: Adjust Current Limit

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 2. Adjust the test load to 27.5A, 10 percent, or more, above the rectifier's current rating. Read the load current on the OUTPUT meter. 3. Adjust the OUTPUT VOLTS ADJ potentiometer to obtain a rectifier voltage of 27.5 ±0.2 volt (24-volt...

  • Page 72: Restoring A Rectifier To Service

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 In Steps 4 and 5 of the Current Limit Test (Off Line) in Section 6, if V is not within the required range, adjust R52 on CM2 (see Figure 6-3) until a correct voltage reading is obtained.
  • Page 73 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Notes If the rectifier continues to operate, proceed to Step b. If the rectifier shuts down due to initial high voltage, monitor the RECT V voltage. When this reading reaches 26 volts for 24-volt plants, or 52 volts for 48-volt plants, turn On the circuit breaker.

  • Page 74: Spare Parts And Replacement Procedures

    CM1 option boards, and handling precautions. This section also provides complete disassembly procedures for replacing components. Ordering Lucent Technologies combines into spare parts kits CM1, CM2, and CM3 circuit boards, described in Section 2, “Circuit Circuit Modules Modules.” Kit number H569-358 L7 contains these replaceable boards for the J85502A-1 rectifier.

  • Page 75: Handling Circuit Modules

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Handling The following guidelines describe how to prevent electrostatic discharge (ESD) and properly handle and protect circuit packs Circuit Modules (modules) in a central office or outside plant environment. These guidelines satisfy the minimum requirements for all three...

  • Page 76: Modifying The Cm1 Option Board

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 • Observe warning labels on bags and cartons. Whenever possible, do not remove circuit packs from antistatic bags or cartons until ready to insert into the rectifier. Otherwise, open all circuit packs at a static-safe work position with wrist straps and dissipative table mats.

  • Page 77: Spare Fuses

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Table 8-B: Modifications for the CM1 Option Board Remove Keep Straps Stamping To Straps Or List/Option Or Resistors Be Added On Resistors Marked With ED83158-30 Marked With N, V, Q, ZA...

  • Page 78: Replacing Cm1 Option Board

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Replacing CM1 1. Turn the rectifier POWER switch Off. Option Board 2. Turn the rectifier (CBA1) DC OUTPUT circuit breaker Off (down). 3. At the ac service panel supplying power to the rectifier, remove the input fuses assigned to the rectifier, or turn the circuit breaker Off.

  • Page 79: Replacing Cm2 Control Board

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 14. Replace the two mounting nuts and associated lockwashers securing CM1. 15. Replace the header connectors on CM1. 16. Replace the four quick-disconnect connectors on CM1. 17. Reconnect all cables that were disconnected in Step 8.

  • Page 80: Replacing Cm3 Digital Meter Board

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 9. Disconnect the J3A connector on the cable from the CM3 digital meter board. 10. Remove the CM2 control board from the six support standoffs by using a small flat-blade screwdriver to push in the latches on each standoff.

  • Page 81: General Information On Replacing Components

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 7. Remove theCM3 meter board from the two support standoffs and S3 switch bezel by using a small flat-bladed screwdriver to unlatch the bezel clips from the switch and push in the latches on each standoff.
  • Page 82 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 DANGER The following disassembly or reinstallation procedures MUST be performed only on a rectifier completely disconnected from the plant battery buses, AND with no input from the ac service panel connected to the rectifier. The plant control cable J2A should also be disconnected from the CM2 board.
  • Page 83 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 dental-type mirror aids in viewing these capacitors' blowholes before disassembly. Lucent Technologies recommends that all dc capacitors in a rectifier be replaced whenever any one of them blows. • Procedures for testing and replacing individual rectifier diodes are provided in “Replacing Components.”...
  • Page 84 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Table 8-D: Torque and Minimum Yield Strength for Mechanical Connections (Using Hex Head Cap Screws) Cap Screw Min. Yield Strength Torque Diameter (inch) (PSI) (ft-lb) UNC 57,000 5/16 57,000 57,000 7/16...
  • Page 85 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Table 8-E: Minimum Torque for All Electrical Connections Torques in in-lb or (ft-lb) Wire Connections Head Tightened Nut Tightened Slotted Screw Size Slotted Hex Or Slotted Hex Or Machine Socket Cap...

  • Page 86: Replacing Components

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Replacing Disconnect the rectifier as described in “Disconnecting a Rectifier,” below. Refer to Figures 5-2, 8-1, and 8-2 for Components component locations. DANGER The following disassembly or reinstallation procedures MUST be performed only on a rectifier completely disconnected from the plant battery buses, AND with no input from the ac service panel connected to the rectifier.

  • Page 87: Thyristor (Q1)

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 2. Remove the quick-disconnect connectors from the CA1 board. 3. Remove the CA1 board from its support standoffs, one at a time, by pushing in on the spring-loaded tabs while pulling out on each corner of the board.

  • Page 88: Dc Inductor (L2)

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 DC Inductor (L2) 1. Remove CM1 option board as described in “Remove CM1 Option Board.” 2. Remove the complete CBA1 bracket assembly as described in Steps 1 through 3 of as in “DC Circuit Breaker (CBA1) and Bracket.”...
  • Page 89 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 12. During reinstallation, use caution when installing the inductor leads to the capacitors to avoid stripping the threaded copper capacitor terminals. DC Filter 1. Remove the CM1 option board as described in “Replace Capacitors (C1 CM1 Option Board.”...

  • Page 90: Figure 8-1: Rear Compartment Of The J85502A-1

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Figure 8-1: Rear Compartment of the J85502A-1 Rectifier with the Cover Removed Figure 8-2: J85502A-1 Rectifier Seen from the Top Front with Door Closed and Top Cover Removed Rear All components in the rear compartment of the J85502A-1 Compartment rectifier are accessible by removing the rear cover.

  • Page 91: Main Transformer (T1)

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 • To facilitate replacement, note the positions of all quick-disconnect and other leads or header connectors before removing. • In the case of the ac inductor L1, do not allow the male side...

  • Page 92: Rectifier Diode Test And/Or Replacement

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 6. Disconnect P2 header connector from the CM1 option board, leads 11 and 12. 7. Remove the CBA1 bracket assembly as described in “DC Circuit Breaker (CBA1) and Bracket.” 8. Remove the CA1 board from its support standoffs as described in “CA1 Snubber Board.”...
  • Page 93 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 4. Refer to the next section to remove any heat shrink tubing and tape on the pigtail connection. 5. With the actual connection exposed, remove the nut and bolt that holds the connection together. Save the hardware for reinstallation.

  • Page 94: Disconnecting A Rectifier

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Heat Shrink This information is applicable to both rectifier diode “pigtail” Removal lead insulation and some main transformer lead insulation in J85502A-1 rectifiers. Remove heavy duty (thick wall) heat shrink insulation by carefully cutting it away with a sharp knife.
  • Page 95 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 7. One at a time, disconnect the dc output conductors from the rectifier “hot” and return bus bars. Insulate the connector ends and label the conductors for easy identification when reconnecting.

  • Page 96: Product Warranty

    ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Product Warranty A. Seller warrants to Customer only, that: 1. As of the date title to Products passes, Seller will have the right to sell, transfer, and assign such Products and the title conveyed by Seller shall be good;...
  • Page 97 ® Lucent Technologies Lineage 2000 25A Ferroresonant Rectifier J85502A-1 Warranty Period Repaired Product Product Type New Product or Part* Central Office 24 Months 6 Months Power Equipment *The Warranty Period for a repaired Product or part thereof is as listed or, in the case of Products under Warranty, is the period listed or the unexpired term of the new Product Warranty Period, whichever is longer.
  • Page 98 FOR A PARTICULAR PURPOSE. CUSTOMER'S SOLE AND EXCLUSIVE REMEDY SHALL BE SELLER'S OBLIGATION TO REPAIR, REPLACE, CREDIT, OR REFUND AS SET FORTH ABOVE IN THIS WARRANTY. Copyright 1998 Lucent Technologies All Rights Reserved Printed in U.S.A. Issue 4 May 1998...

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