# SEL-411L Advanced Line Differential & Automation System

> feeder-protection - Transmission line high-speed differential (subcycle operation), quad-distance elements, traveling-wave fault location and bay control

**Voltformer canonical:** https://voltformer.com/product/sel-411l-advanced-line-differential-distance-automation-system - markdown version: https://voltformer.com/product/sel-411l-advanced-line-differential-distance-automation-system.md

## Overview

- **Brand:** SEL
- **Product family:** SEL-400 Series
- **Application:** Transmission line high-speed differential (subcycle operation), quad-distance elements, traveling-wave fault location and bay control
- **Product type:** feeder-protection

## Protection & Control Functions

- **ANSI Functions:** 87L, 21/21N, 50/51, 50N/51N, 67/67N, 50BF, 25, 79
- **Transformer Windings:** N/A (Feeder / Bay)
- **Supports Transformer:** No
- **Supports Feeder:** Yes
- **Supports Breaker Control:** Yes
- **Arc Flash Protection:** No

## Digital Integration & Protocols

- **IEC 61850 Edition:** Ed2.1
- **GOOSE:** Yes
- **Sampled Values (SV):** Yes
- **Redundancy (PRP/HSR):** Yes (PRP/HSR)
- **Protocols:** IEC 61850, DNP3, IEEE C37.118 PMU, SEL Mirrored Bits
- **Engineering Software:** acSELerator QuickSet

## Electrical Interface

- **Frequency:** 50/60 Hz
- **Nominal Current:** 1 A / 5 A
- **Auxiliary Supply:** 110-250 Vdc / 110-240 Vac
- **Operating Temperature:** -40 to +85 °C

## Standards

- IEC 60255
- IEEE C37.90
- IEEE 1613

## Sources

- https://selinc.com/products/411L/

- **Source scope:** manufacturer-family
- **Last reviewed:** 2026-09-13

Manufacturer portfolio/family source. Confirm the exact order code, guaranteed ratings and project-specific options against the current OEM datasheet before procurement or an SLD study.

Technical ratings are configuration-dependent where stated by the manufacturer. Request project-specific verification before procurement.