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Schweitzer Engineering Laboratories Manuals & User Guides

Global leader in digital products and systems that protect, power, and automate electric power grids.

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Schweitzer Engineering Laboratories, Inc. (SEL) invents, designs, and builds digital products and systems that protect power grids around the world. Their proprietary technology prevents blackouts and enables the integration of renewable energy sources.

SEL provides a comprehensive range of solutions including protective relays, communication processors, automation controllers, rugged computers, and software for the electric power industry. Renowned for reliability, SEL products support utility, industrial, and commercial power systems globally.

Schweitzer Engineering Laboratories manuals

Latest manuals from manuals+ curated for this brand.

SEL-2245-42 Axion Modules User Manual

SEL-2245-42 Axion Modules User Manual

November 19, 2025
SEL-2245-42 Axion Modules Dangers, Warnings, and Cautions DANGER Indicates an imminently hazardous situation that, if not avoided, will result in death or serious injury. WARNING Indicates a potentially hazardous situation that,…
SEL Electrical Protection and Control Systems Instruction Manual

SEL Electrical Protection and Control Systems Instruction Manual

September 23, 2025
SEL Electrical Protection and Control Systems Instruction Manual Hardware-in-the-Loop Testing of Electrical Protection and Control Systems Krishnanjan Gubba Ravikumar Schweitzer Engineering Laboratories, Inc. Roy Hamilton, Anshuman Mallya, and Michael Mendiola…
SEL-T401L Ultra High Speed Line Relay Instructions

SEL-T401L Ultra High Speed Line Relay Instructions

August 30, 2025
SEL-T401L Ultra-High-Speed Line Relay Dependable Time-Domain Line Protection With a Traveling-Wave Fault Locator and an Ultra-High-Resolution Transient Recorder Major Features and Benefits The SEL-T401L is a high-performance, easy-to-use line protective…
SEL-751 Feeder Protection Relay User Guide

SEL-751 Feeder Protection Relay User Guide

July 7, 2025
SEL-751 Feeder Protection Relay 2 ms arc-flash protection and feeder relay in one platform Support low-energy analog (LEA) voltage sensor inputs and Rogowski coil or low-power current transformer (LPCT) inputs…
SEL-851 Feeder Protection Relay Installation Guide

SEL-851 Feeder Protection Relay Installation Guide

June 3, 2025
SEL-851 Feeder Protection Relay Product Information Specifications Product Name: SEL-851 Relay Enclosure Model: PLS851-02 Date Code: 20250501 Installation Steps Step 1. Install an SEL-2401 Satellite-Synchronized Clock at the position shown…
SEL-751 Feeder Protection Relay Instruction Manual

SEL-751 Feeder Protection Relay Instruction Manual

October 12, 2024
SEL-751 Feeder Protection Relay 2 ms arc-flash protection and feeder relay in one platform Support low-energy analog (LEA) voltage sensor inputs and Rogowski coil or low-power current transformer (LPCT) inputs…
SEL-3350 Adapter Panel Instruction Manual

SEL-3350 Adapter Panel Instruction Manual

July 16, 2024
SEL-3350 Adapter Panel Specifications Product Name: SEL-2902 RJ45 to DB-9 Adapter Panel Manufacturer: Schweitzer Engineering Laboratories, Inc. Mounting Options: Rack-mount, Surface-mount, DIN-rail Depth Adjustment: 7 to 11 inches Connectors: 16…
SEL-651R and SEL-651RA Configurable Labels User Guide

SEL-651R and SEL-651RA Configurable Labels User Guide

February 10, 2023
SEL-651R and SEL-651RA Configurable Labels Overview The SEL-651R and SEL-651RA Configurable Labels Kit provides the materials and information needed to customize the target LED and operator control pushbutton areas of…
SEL Axion Safety Information and Specifications

SEL Axion Safety Information and Specifications

Safety Information
Comprehensive safety information, specifications, operating environment, dimensions, weight, and technical support details for Schweitzer Engineering Laboratories (SEL) Axion products, including model numbers and technical ratings.
SEL-735 Power Quality and Revenue Meter Data Sheet

SEL-735 Power Quality and Revenue Meter Data Sheet

datasheet
The SEL-735 is a versatile power quality and revenue meter offering precise metering for high-value power systems. It provides advanced power quality monitoring, extensive logging capabilities, and secure communications, suitable…

Schweitzer Engineering Laboratories support FAQ

Common questions about manuals, registration, and support for this brand.

  • What is the warranty period for SEL products?

    SEL products are covered by a ten-year worldwide warranty, reflecting the company's commitment to reliability.

  • How can I contact SEL technical support?

    You can reach SEL technical support by calling +1.509.338.3838 or visiting the official SEL support page online.

  • Who should service SEL equipment?

    Only qualified personnel should service SEL equipment to avoid risk of injury or damage to the device.