MECHANICAL OVERSPEED

DEVICE

Reduce the risks at your hydro station by protecting the turbine from an over-speed condition with a mechanical over-speed device that acts independently from the electronic governor.

CONTACT AN EXPERT


Mechanical Overspeed Device – Full Brochure

GENERAL INFORMATION

The overspeed mechanical switch is a protection device and consists of a centrifugal pendulum and a trigger, which are actuated as a function of the turbine’s speed. Once the device is actuated, it commands the turbine’s inlet closing (wicket gate, injectors, etc,), independently of the electrical command of the governor.

SPECIFICATIONS

Specifications Overspeed Mechanical Switch Device

ELECTRICAL CONTACT

When actuated, it provides only the electrical signal for automation.

HYDRAULIC TYPE

When actuated, it provides both hydraulic emergency turbine’s closing as well as electrical signal for automation.

Mechanical Characteristics Electrical Characteristics

SYMBOLOGY

Symbol Overspeed Mechanical

DETAILS

Hydraulic Type Actuating Device Pressure Switch

Pressure Switch Mechanical Overspeed

Hydraulic Type Actuating Device Limit Switch

Limit Switch Mechanical Overspeed

Electrical Contact Type Device (electrical contact only)

Electric Contact Mechanical Overspeed

OVERSPEED CENTRIFUGAL PENDULUM

Overspeed Centrifugal Pendulum

DIMENSIONS (mm)

Centrifugal Pendulum

Dimensions Centrifugal Pendulum

Hydraulic Type Device

Dimensions Hydraulic Type Device

Electrical Contact Device

Dimensions Electrical Contact Device

MOUNTING

Mounting Overspeed Mechanical Switch Device
Overspeed Device Setting

The specification of the correct setting distance for each project is carried out in the factory’s manufacturing and testing procedures, according to the displacement VS speed curves.

If you would like to discuss these features with a qualified engineer to better understand the advantages, please call our toll free number 1-877-7REIVAX.

CONTACT US

All the Latest News & Cases

Woodward gate shaft governor – Life extention upgrade 960 1280 REIVAX

Woodward gate shaft governor – Life extention upgrade

Woodward gate shaft governor retrofit by REIVAX In 2024, Reivax received an award for replacing digital governors at the Bull Shoals hydro station, as announce…

read more
Life extension upgrade on a GE EX2100E exciter 1316 536 REIVAX

Life extension upgrade on a GE EX2100E exciter

Reivax upgrades GE EX2100E exciter for 226MVA generator Learn how Reivax designed, manufactured, installed and commissioned a front-end control upgrade on a GE EX2100E static…

read more
Life extension upgrade on UNITROL F Static Excitation systems 1500 1201 REIVAX

Life extension upgrade on UNITROL F Static Excitation systems

REIVAX performs life extension upgrade on UNITROL F Static Excitation systems Learn how Reivax REIVAX performed four (4) front-end control upgrades on aging ABB UNITROL…

read more

Dummy Image

Founded on strong engineering principals and innovation, REIVAX is a global excitation system manufacturer and excitation system supplier. Today, REIVAX is a leading provider of excitation systems and governors.

© 2019 REIVAX | Excitation, Governor & Automation. All rights reserved. By GreenLight & iWEBAPP

    Enter your
    text here