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Hitachi SM 6145 Installation Operation & Maintenance

Secondary surge suppressors
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SM 6145
1000 Technology Drive, Pittsburgh, PA 15219
645 Russell Street, Batesburg, SC 29006
STS USA
Secondary Surge Suppressors
(USSP)
STS USA Part Nos.
N451552-05XX
 Installation
 Operation
 Maintenance
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Summary of Contents for Hitachi SM 6145

  • Page 1 SM 6145 1000 Technology Drive, Pittsburgh, PA 15219 645 Russell Street, Batesburg, SC 29006 STS USA Secondary Surge Suppressors (USSP) STS USA Part Nos. N451552-05XX  Installation  Operation  Maintenance...
  • Page 2 STS USASecondary Surge Suppressors USSP) Copyright 2019 SM 6145 Rev. 3, March 2019...
  • Page 3 STS USASecondary Surge Suppressors USSP) Proprietary Notice This document and its contents are the property of Hitachi Rail STS USA, Inc. (formerly known as Union Switch & Signal Inc., and hereinafter referred to as "STS USA"). This document is furnished to you on the following conditions: 1.) That no...
  • Page 4 STS USASecondary Surge Suppressors USSP) Revision History REV. DATE NATURE OF REVISION February, 2012 Initial release Revised Table 1-1 for suffixes -0525 April 2012 and -0527. March 2019 Hitachi Rail STS Branding Copyright SM 6145, Rev. 23, March 2019...

  • Page 5: Table Of Contents

    USSP Electrical Specifications – All Models ..............1-4 Table 1-2. USG-A Lightning Arrestor Specifications ................. 1-5 Table 4-1. USSP Current Test Values ....................4-3 Table 5-1. Common Parts ......................... 5-1 Table 5-2. Parts List .......................... 5-2 Copyright SM 6145, Rev. 23, March 2019...
  • Page 6 STS USASecondary Surge Suppressors USSP) Copyright SM 6145, Rev. 23, March 2019...

  • Page 7: Introduction

    USSP or installed elsewhere in the equipment wiring. STS USA low voltage USG-A lightning arresters (N451552-0101) are installed on the nominal 12VDC battery line models. This arrester has no polarity concerns and is wired Line-to-Line (from the Copyright SM 6145, Rev. 23, March 2019...

  • Page 8: Specifications

    Two flat brackets, hole centers 7 ½ inches apart, for ¼ inch diameter fasteners. Temperature Environment: -40° F to +158° F (-40° C to +70° C) 1.2.2 Electrical For electrical specifications of the USSP models, refer to Table 1-1. Copyright SM 6145, Rev. 23, March 2019...

  • Page 9: Figure 1-2. Usg-A Lightning Arrestor Schematic Diagram

    USSP-10 (-0509, 0510, USSP-30 (-0528) 0511, 0512, 0521, 0522, 0523, 0524) T5 (GND) -0201 -0401 -0101 -0401 USSP-21 (-0525) USSP-31 (-0529) -0201 T6 (GND) USGA PART NO. N451552 Figure 1-2. USG-A Lightning Arrestor Schematic Diagram Copyright SM 6145, Rev. 23, March 2019...
  • Page 10 31.6 V Zener Transient Suppressor Low Voltage (1) 0527 Track Circuit 17 VAC, 7 VDC/50A None 8 V Zener Transient Suppressor None 0528 AC Power 120 VAC/20A None 140 VAC Zener Transient Suppressor Line (1) Copyright SM 6145, Rev. 23, March 2019...

  • Page 11: Table 1-2. Usg-A Lightning Arrestor Specifications

    @ 32 VDC 50-150 VAC (60 Hz) 500-1300 VDC -0201 250 VDC, 175 VAC ohms @ 100 VDC 350-950 VAC (60 Hz) -0401 140 VAC 5 x 10 ohms @ 120 VAC Copyright SM 6145, Rev. 23, March 2019...
  • Page 12 STS USASecondary Surge Suppressors USSP) Copyright SM 6145, Rev. 23, March 2019...

  • Page 13: Principles Of Operation

    Oxide Varistor to limit the surge voltages equally in both polarities. The high voltage arresters are always wired in a Line-to-Ground configuration to shunt the surge energy to an intentional ground path rather than through the equipment to an unintentional ground. Copyright SM 6145, Rev. 23, March 2019...
  • Page 14 STS USASecondary Surge Suppressors USSP) Copyright SM 6145, Rev. 23, March 2019...

  • Page 15: Installation

    Consult STS USA Engineering for USSP installations in systems already equipped with lightning arresters. Figure 3-1 is a schematic of the three basic USSP models (battery, track circuit, AC line) in a composite installation. For other, special installations, consult STS USA engineering. Copyright SM 6145, Rev. 23, March 2019...

  • Page 16: Figure 3-1. Ussp Battery Line, Track Circuit, And Ac Line Models Typical Installation

    STS USASecondary Surge Suppressors USSP) USSP-21 SOLID STATE EQUIPMENT USSP-11 RECTIFIER USG-A HIGH VOLTAGE USSP-30 ARRESTERS Figure 3-1. USSP Battery Line, Track Circuit, and AC Line Models Typical Installation Copyright SM 6145, Rev. 23, March 2019...

  • Page 17: Troubleshooting And Maintenance

    CAUTION Make certain to observe proper polarities (where applicable) when testing or replacing the solid state voltage suppression components, otherwise these may be damaged when power is applied. Copyright SM 6145, Rev. 23, March 2019...

  • Page 18: General Current Test

    For the selected voltage setting (corresponding to the "Maximum Circuit" rating of the unit), the ammeter should show a current equal to or less than that indicated in column 3 of Table 4-1. If the ammeter indicates a higher current, the unit should be replaced. Copyright SM 6145, Rev. 23, March 2019...

  • Page 19: Table 4-1. Ussp Current Test Values

    32 VDC 0.001A 0524 32 VDC 0.001A 0525 7 VDC 0.005A 0526 7 VDC 0.005A 0527 7 VDC 0.001A 0528 120 VDC 0.030A 0529 120 VDC 0.030A 0532 63 VDC 0535 44 VDC Copyright SM 6145, Rev. 23, March 2019...
  • Page 20 STS USASecondary Surge Suppressors USSP) Copyright SM 6145, Rev. 23, March 2019...

  • Page 21: Parts List

    Nut, 14-24 hex brass J480301 Screw, 6-32x7/16 fl hd steel J521066 Label-wht poly,#m-787 oiltak J0759550056 Parts exclusive to certain USSP models are given in the Table 5-2 and are referenced to Figure 5-1. Copyright SM 6145, Rev. 23, March 2019...

  • Page 22: Table 5-2. Parts List

    0406 0604 0703 0101 (1) 0527 0406 0604 0703 0528 0404 0605 0704 0401 (1) 0529 0401 0605 0705 0401 (2) 0532 0405 0604 0706 0101 (1) 0201 (2) 0535 0406 0604 0707 Copyright SM 6145, Rev. 23, March 2019...

  • Page 23: Figure 5-1. Ussp Assembly Drawing

    VIEW "Y" - FOR VIEWS "C" & "D" FOR OTHER INFO, SEE MAIN VIEWS VIEW "F" VIEW "D" BOTTOM OF COVER VIEW "D" (FOR -0536 TERMINAL #9 NOT INSTALLED) Figure 5-1. USSP Assembly Drawing Copyright SM 6145, Rev. 23, March 2019...
  • Page 24 STS USASecondary Surge Suppressors USSP) Copyright SM 6145, Rev. 23, March 2019...

  • Page 25: Rail Team And Technical Support

    The Rapid Action Information Link Team (RAIL Team) is a group of experienced product and application engineers ready to assist you to resolve any technical issues concerning this product. Contact the RAIL Team in the United States at 1-800-652-7276 or by e-mail at [email protected]. Copyright SM 6145, Rev. 23, March 2019...
  • Page 26 STS USASecondary Surge Suppressors USSP) End of Manual Copyright SM 6145, Rev. 23, March 2019...

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