• Please try to be as accurate as possible with your search.
  • We can quote you on 1000s of specialist parts, even if they are not listed on our website.
  • We can't find any results for “”.
    SEE MORE
      SEE PRODUCTS IN SEARCH PAGE ()
      info@apterpower.com
      +86 181 0690 9650
      Request a

      Fast Quote

      Manufacturers
      ALL MANUFACTURERS
      • Please try to be as accurate as possible with your search.
      • We can quote you on 1000s of specialist parts, even if they are not listed on our website.
      • We can't find any results for “”.
        Manufacturers
        info@apterpower.com +86 181 0690 9650
        Choose a manufacturer
        ALL MANUFACTURERS
        Ask our team:
        • Phone: +86 181 0690 9650
        • E-Mail info@apterpower.com

        • Lifecycle status

          Active / Available from OEM
          SEL-351A quotations, product manuals, and feeder-protection model matching are available through Apter Power.

        SEL-351A

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        Schweitzer Engineering Laboratories SEL-351A is a feeder protection system combining overcurrent protection, automatic reclosing, control, metering, and event recording.
        In Stock
        Ships by Saturday, October 17
        Fast Shipping Available
        Get a quick price for SEL-351A
        Quantity
        *E-mail
        Company
        *Mobile
        *Content
        Upload (gif, jpg, jpeg, png, bmp, doc, docx, xls, xlsx, ppt, pdf, csv)
        Get a Quote
        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for SEL-351A

        • Manufacturer:
          SEL
        • Part Number:
          SEL-351A
        • Product Family:
          SEL
        • Product Type:
          Feeder Protection System
        • Stock:
          1
        • AC voltage inputs:
          67–120 Vrms line-to-neutral; 115–260 Vrms line-to-line
        • Continuous voltage rating:
          300 Vrms
        • Current input options:
          1 A or 5 A nominal
        • Power-supply ranges:
          18–60 Vdc; 38–200 Vdc / 85–140 Vac; 85–350 Vdc / 85–264 Vac
        • Power burden:
          <25 W
        • Frequency tracking:
          40–65 Hz
        • Protection/control processing:
          4 times per power-system cycle
        • Oscillography sampling:
          128 samples per cycle
        • Event report length:
          15, 30, or 60 cycles
        • Event storage:
          11 seconds total
        • Standard output make rating:
          30 A
        • Standard output continuous rating:
          6 A at 70 °C; 4 A at 85 °C
        • Front communications:
          USB Type B and EIA-232
        • Rear serial ports:
          Two EIA-232; EIA-485 optional
        • Standard copper Ethernet:
          Two 10/100BASE-T RJ45 ports
        • Operating temperature:
          −40 to +85 °C
        • Relative humidity:
          5–95%, noncondensing
        • Enclosure rating:
          IP30
        • Automatic reclosing:
          Up to four shots
        • Weight:
          15 lbs (6.8 kg)
        • Tariff Code:
          8536300000
        • Country of origin:
          USA
        • Place of shipment:
          Xiamen,Fujian,China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Protection Logic Reclosing Control Communications Event Records

        Features:

        • Feeder overcurrent protection with breaker trip and close control
        • Automatic reclosing for as many as four programmed shots
        • Event reports, SER records, metering, and integrated fault location
        Schweitzer Engineering Laboratories SEL-351A evaluates feeder currents and voltages through coordinated phase, ground, and negative-sequence protection elements.

        Programmable logic links those protection decisions to breaker trip, close, reclosing, and lockout behavior for the installed feeder scheme.

        After an operation, SEL-351A retains event, sequence, metering, and fault-location information that engineers can retrieve through the fitted communications interfaces.
        Apter Power provides quotations, product manuals, and model-selection assistance for the SEL-351A Feeder Protection System.
        Schweitzer Engineering Laboratories SEL-351A Feeder Protection System Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

        Coordinate current and voltage elements

        • Phase elements: Evaluate feeder phase overcurrent conditions
        • Ground elements: Residual and neutral-ground measurements support ground-fault protection
        • Negative sequence: Detects unbalanced current conditions
        • Programmable equations: SELogic combines element states with trip and control logic

        Sequence breaker reclose attempts and supervision

        • Shot sequence: Up to four automatic reclose shots can be programmed
        • Timing: Each shot uses configured open intervals and reset behavior
        • Lockout: The sequence moves to lockout when the programmed conditions are met
        • Close supervision: Voltage and synchronism checks can supervise closing when configured

        Separate local engineering and station network paths

        • Front access: USB and EIA-232 support local engineering work
        • Rear interfaces: Serial or Ethernet hardware follows the complete ordering code
        • Time input: IRIG-B can align relay records with station time
        • Engineering data: Settings, metering, and event files use the available communications path

        Preserve fault waveforms and event timing

        • Oscillography: Event reports capture electrical quantities around an operation
        • Sequence log: SER entries time-stamp relay and control state changes
        • Fault location: Calculated distance supports feeder-fault investigation
        • Synchrophasors: IEEE C37.118 measurements are available for synchronized monitoring
        Description
        Schweitzer Engineering Laboratories SEL-351A is a feeder protection system that combines distribution-feeder protection, breaker control, monitoring, metering, and fault location in one relay.

        Phase, ground, and negative-sequence overcurrent elements in SEL-351A evaluate measured current and voltage conditions, then feed the relay logic that issues trip and close commands to the controlled breaker.

        Automatic reclosing in SEL-351A can coordinate as many as four reclose shots with programmable timing and lockout behavior. Voltage supervision and synchronism-check functions can be included in the close decision when the ordered voltage inputs are connected.

        Event reports, the Sequential Events Recorder, and the fault locator in SEL-351A retain the operating sequence around a feeder event. Front USB and serial access, together with the ordered rear serial or Ethernet interfaces, carry settings and records between the relay and engineering systems.
        Alternative Names
        SEL-351A SEL 351A 351A Protection System SEL351A SEL-351A Relay Schweitzer SEL-351A SEL Feeder Protection 351A SEL 351A Feeder Relay
        Technical notes
        SEL-351A ordering options determine the installed voltage inputs, communications ports, power supply, and output arrangement. Verify the complete nameplate code before matching a replacement relay.
        Exceptional Service

        Our Mission

        • 100% Satisfaction

          We believe expertise is priceless. With over 20 years of experience, and top engineers on staff, we can help you solve or avoid problems that threaten your business.

        • Trust Guaranteed

          Not only do we have a vast inventory, our team makes sure every piece of equipment is in working condition. Your purchases are also backed by our Warranty.

        • Expertise

          Time is money, especially when your equipment is down. We work quickly to get your equipment on its way so you can get it back up and running.

        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        Which ordering details must be checked before replacing SEL-351A?
        Confirm the complete SEL-351A nameplate code because current and voltage inputs, power supply, communications, and output hardware vary with the ordered configuration.
        How many automatic reclose shots can SEL-351A coordinate?
        SEL-351A can coordinate as many as four reclose shots. Review shot timing, reset, and lockout logic before applying an existing feeder setting file.
        What evidence can SEL-351A retain after a feeder fault?
        Event reports, the Sequential Events Recorder, and fault-location results in SEL-351A preserve the electrical quantities and operating sequence used for post-event analysis.
        When should voltage supervision be included in SEL-351A closing logic?
        Use the connected voltage inputs and configured synchronism or voltage checks when SEL-351A must block closing under unacceptable source and bus conditions.
        How are SEL-351A settings and records accessed locally?
        Use the front USB or EIA-232 interface of SEL-351A for local engineering access; rear serial or Ethernet paths depend on the ordered communications hardware.
        Can a base SEL-351A catalog name confirm its Ethernet hardware?
        No. SEL-351A communication hardware is ordering dependent, so inspect the rear panel and full nameplate code before assigning Ethernet or serial connections.

        You May Also Like

        Product Browsing History