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REL551 ver. 2.5

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The REL 551 terminal is used for the protection, control, and monitoring of overhead lines and cables. It provides for one-, two-, and/or three-pole tripping. It provides an open terminal platform with extensive configuration possibilities and expandable hardware design to meet specific user requirements.

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Bay Control

Hitachi Energy's range of bay control IEDs provides versatile control & backup protection for circuit-breakers, disconnectors and earthing switches in any kind.

Generator Circuit-breaker for power plants

Breaker Protection

Hitachi Energy's range of breakers runs from the compact to the comprehensive, offering protection in flexible form factors suited to every application.

Aerial view of a high voltage substation.

Busbar Protection

Hitachi Energy’s range of busbar IEDs (Intelligent Electronic Devices) provide versatile management of busbar installations with models focused on distributed protection.

DRL600 Disturbance recording

A disturbance recording application is characterized by great flexibility of the configuration, starting conditions, resolution and storage capacity.

GPU2000R

The GPU2000R is a Generator Protection Unit in proven line of 2000R series relays. It provides multifunction protection, expansive fault and operations records.

Hydro electric Electricity power plant - powerplant waterfall over dam after storm

Generator Protection

Hitachi Energy offers a complete portfolio of generator protection solutions for all types of generators and generator-transformers with IEC 61850 standard.

Line Differential Protection

An alternative principle for line protection that is quickly becoming the norm is differential protection.

Picture of an electrical engineer standing and watching at the electric power station to view the planning work by producing electricity at high voltage electricity poles.

Line Distance Protection

Line distance protection is reliable, fast and largely manages to eliminate the variable system quantities of load and supply out of the protection calculation.

Modular relays and accessories

Your flexible and reliable protection solutions for power systems.

PWC600 - Point-on-wave controller Switchsync™

Switchsync PWC600 is Hitachi Energy’s newest generation of point-on-wave controllers, based on the successful Relion® platform of protection and control products.

Phasor Measurement

A Phasor Measurement Unit is a vital component of Wide Area Monitoring Systems and capable of measuring the voltage magnitude and phase angle at every system bus.

REG216

REG316

REL316

REL316*4 numerical line protection scheme is designed for the high-speed discriminative protection of lines and cables in distribution & transmission systems.

REL350

The REL 350 is a numerical segregated phase comparison transmission line protection system for high-speed tripping for any transmission line application.

REL352

The REL 352 provides high-speed relaying which is suitable for application to any voltage level. It can also be used for three-terminal applications. Learn more

REL356

The REL 356 offers high-speed relaying which is suitable for application to any voltage level. It can also be used for three-terminal applications. Read more!

REL561 ver. 2.5

The REL561 ver. 2.5 terminal is especially suitable for series compensated networks. It provides one-, two-, and/or three-pole tripping in networks. Learn More!

RES521

Generator step-up transformers (GSU) are the critical link between the power station and the transmission network, often operated day and night at full load.

Railway application

Rapid urbanization plus the urgent need to reduce carbon dioxide emissions are driving substantial new interest and investment in the transportation sector.

Railway solutions with Relion 670 series

Relion 670 series offers to monitor for 16.7/50/60 Hz systems in railways and provides fast, reliable data to safeguard your critical electrical equipment.

SAM600 Process Interface Unit

Meet the SAM600 version 3.0 process interface unit, our new flagship merging and switchgear control unit for digital substations. One easy-to-use box provides you with ultimate flexibility. Get ready to unlock the benefits of digital.

Transformer Protection

The RET670 and 650 IED (Intelligent Electronic Device) provide fast and selective protection, monitoring, and control for all types of transformers.

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