# Hitachi Energy Relion REC670 Bay Control IED

> bay-control - Transmission and high-voltage substation bay control, interlocking, synchrocheck, disconnector/breaker operation and telemetry

**Voltformer canonical:** https://voltformer.com/product/hitachi-energy-relion-rec670-bay-control-ied - markdown version: https://voltformer.com/product/hitachi-energy-relion-rec670-bay-control-ied.md

## Overview

- **Brand:** Hitachi Energy
- **Product family:** Relion 670
- **Application:** Transmission and high-voltage substation bay control, interlocking, synchrocheck, disconnector/breaker operation and telemetry
- **Product type:** bay-control

## Protection & Control Functions

- **ANSI Functions:** 50/51, 50BF, 25, 27/59, 81, 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
- **GOOSE:** Yes
- **Sampled Values (SV):** Yes
- **Redundancy (PRP/HSR):** Yes (PRP/HSR)
- **Protocols:** IEC 61850, IEC 60870-5-103, DNP3
- **Engineering Software:** PCM600

## Electrical Interface

- **Frequency:** 50/60 Hz
- **Nominal Current:** 1 A / 5 A
- **Auxiliary Supply:** 24-250 Vdc
- **Operating Temperature:** -25 to +55 °C

## Standards

- IEC 60255
- IEC 61850
- IEEE C37.90

## Sources

- https://www.hitachienergy.com/products-and-solutions/substation-automation-protection-and-control/products/protection-and-control/relion-product-family/relion-670-series/rec670

- **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.