Ansaldo STS USA Vital Relays and Timers RSE-4F1 Rev. 7-03 PN-150BSR Slow Release Biased Relay General Description The PN-150BSR relay is a slow release biased relay that remains in the energized position approximately 1 second after control energy is removed. This feature is used to bridge the transfer time of the controlling relay contacts to prevent loss of information. A typical example is the bridging of the changeover time of a PN-150BD relay from normal to reverse (or viceversa). For longer delay time, refer to the PN-259BSR relay in RSE-4F4 and PN-259SRA relay in RSE-4F5. Contacts are low-voltage silver to silver-impregnated front and silver to silver back. Ordering Information • Specifications • Refer to the ordering tabulation for operating specifications. • • • • Standard relay and plug-in base order numbers listed in tabulation and RSE-4R1. When writing your order, specify the required contacts and coil resistance. Relay bases are ordered separately. Indicate the type of relay to be used with that base. For detailed specifications and complete parts lists, request ASTS USA Service Manual SM-4596B. Refer to RSE-4S1 for shop maintenance tools and supplies. PN-150BSR Relays and Base Order No. N322503-701 N322503-702 N322503-802 N322503-804 N451376-0302 Min. Front Coil Energ. Energ. D.A. Test Contacts Res. Amps (1) Volts (1) Time (2) X 6FB Std. 100 0.0345 3.45 4.7 X 6FB Std. 250 0.0223 5.58 7.5 -6FB Std. 250 0.0223 5.58 7.5 -4FB, 2F, 1B Std. 250 0.0223 5.58 7.5 Plug-In base for PN-150BSR (ref. RSE4R1) Note (1): Value at which relay will become energized. Response will generally occur at some lower value. Note (2): 0.8 sec. @V Note (3): 1.0 sec. @V Note (4): Contacts - 6FB, 1 through 6: FB Note (5): Contacts - 4FB, 2F, 1B; 1,3,4,6: FB; 2,7: F; 5: B Min. D.A. Time (3) 5.6 9.0 9.8 9.0 System Volt. Notes 10 (4) 12 to 16 (4) 12 to 16 (4) 12 to 16 (5) (See reverse side for general features of ASTS USA electro-mechanical vital relays.) To order, call 1-800-652-7276 www.ansaldo-sts.com RSE-4F1, p. 1 Ansaldo STS USA PN-150BSR Slow Release Biased Relay RSE-4F1 Rev. 7-03 General Features of ASTS USA PN-Series Electro-Mechanical Vital Relays ASTS USA vital and non-vital plug-in relays serve a multitude of functions in both railroad and transit control circuit applications. These time-proven relays are space-saving, easily installed or removed and can be handled in the field without disturbing coil or contact wiring. In addition to production of PN-series electromechanical relays at the same high standards, ASTS USA also provides high-quality remanufacturing services for these relays so that they can be returned to service in like-new condition. Refer to the “Remanufacturing Services” section of this catalog or call 1-800-652-7276 for additional information. Other types of contact material for special application are described with the particular relay. Standard contacts are factory-adjusted to standard minimum opening and conform to AREMA (AAR) requirements. All vital plug-in relays incorporate a transparent molded cover over the relay contacts and armature structure. The cover is sealed to the frame with a gasket that assures a tight, dust-proof and moisture-proof seal. Contact Designations Front and back contacts of plug-in relays are designated “F” and “B”, respectively. The dependent contacts are denoted FB, while the independent contacts are denoted “F” or “B” alone. Advantages • • • • • • Wide selection available for every application Testing Meets or exceeds applicable AREMA (AAR) requirements Many ASTS USA vital relays are provided a front testing capability. The front testing facility is in series with the coil control circuit to permit deenergization of the relay while it is in its service mounting, without disturbing the relay or wiring. Testing may also be accomplished through the rear of the relay mounting base without opening a contact or coil circuit. Refer to RSE-4S1 for special tools utilized in maintaining ASTS USA plug-in relays. Plug-in design permits quick installation or removal Indexed to assure proper mounting Sturdy plug-in base for every relay model Operates over wide temperature range High Quality Design and Assembly Latch All components of ASTS USA plug-in relays are constructed according to rigid quality control standards and are thoroughly tested before shipment. Coils are encapsulated for protection against mechanical damage and moisture. Magnetic circuits are constructed of non-aging materials. The air gap is not disturbed when the coil is removed or the contact springs adjusted. Those relays with an adjustable magnetic shunt may be adjusted for degree of magnetic hold-down force without changing the contact adjustment or the hold-down pole-piece position. A spring-operated latch holds each plug-in relay securely to its mounting base. The latch is released by pressing a button on the front of the relay. Contact fingers and springs utilize a simple, reliable design and are heat treated to assure uniformity of material and contact stability. The heavy contact fingers extend through the base to serve as plug connectors. Heel contacts are actuated by operating arms pivoted to the armature. Contact surfaces have sufficient wiping action to be self-cleaning. “Standard” contact materials include fine silver heels and backs, and silver-impregnated carbon (S.I.C.) fronts with a typical capacity of 4A @ 30 Vdc or 175 Vac. “Heavy Duty” (H.D.)” contact materials also include fine silver heels and backs and silver-impregnated carbon (S.I.C.) fronts with a typical capacity of 15A @30 Vdc or 30 Vac. RSE-4F1, p. 2 Indexing All plug-in relays are equipped with indexing pins to prevent insertion of an incorrect relay into the mounting base. Each relay is accompanied by an indexing plate that is applied to the base at the initial installation. System Voltage This voltage, which is listed in the relay ordering tabulation specifications, is prescribed for relays in locally energized circuits. Higher voltage may be used, if required, up to 10 watts power dissipation.
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