# Basler BE1-11t Transformer Protection System

> transformer-protection - Comprehensive two- and three-winding transformer protection with programmable logic, thermal tracking and restricted earth fault

**Voltformer canonical:** https://voltformer.com/product/basler-be1-11t-transformer-protection-system - markdown version: https://voltformer.com/product/basler-be1-11t-transformer-protection-system.md

## Overview

- **Brand:** Basler Electric
- **Product family:** BE1-11 Series
- **Application:** Comprehensive two- and three-winding transformer protection with programmable logic, thermal tracking and restricted earth fault
- **Product type:** transformer-protection

## Protection & Control Functions

- **ANSI Functions:** 87T, REF/87N, 49, 50/51, 50N/51N, 24, 50BF, 27/59
- **Transformer Windings:** 2, 3
- **Supports Transformer:** Yes
- **Supports Feeder:** No
- **Supports Breaker Control:** Yes
- **Arc Flash Protection:** No

## Digital Integration & Protocols

- **IEC 61850 Edition:** Ed2
- **GOOSE:** Yes
- **Sampled Values (SV):** Configuration-dependent
- **Redundancy (PRP/HSR):** Yes (PRP/HSR)
- **Protocols:** IEC 61850, DNP3, Modbus
- **Engineering Software:** BESTlogicPlus

## Electrical Interface

- **Frequency:** 50/60 Hz
- **Nominal Current:** 1 A / 5 A
- **Auxiliary Supply:** 24-48 / 125-250 Vdc options
- **Operating Temperature:** -40 to +70 °C

## Standards

- IEC 60255
- IEEE C37.90
- UL Listed

## Sources

- https://www.basler.com/Product/BE1-11t-Transformer-Protection-System

- **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.