NewElec’s two OLR 8 models are separate single-pole overcurrent and under load relays that assist in rapidly tripping a motor when its load has exceeded a user-selectable pre-set threshold or to protect a pump from running dry. Mechanical damage to couplings, chain conveyors, gearboxes and V-belts can be substantially diminished when such occurrences are a result of over torqueing. In a similar manner, pump equipment can be saved by tripping the drive motor when loading is diminished beyond a user-selected level.
Both relays are easy to use and fitted with latched diagnostic LEDs as well as early warning alarm relays. Both relays accommodate CTs with 1 A inputs.
Costly downtime is prevented and broken conveyor belts, snapped chains, coupling failures or even broken gearboxes are avoided. In some instances and with careful adjustments, the relay has been used to prevent crane overloading. It can be used in conjunction with any current range as an alarm/trip or current regulating unit. An easy to use load setting dial is calibrated from 30 to 120% of the primary current transformer and is used to monitor the load.
The over-torque relay has a trip delay setting dial calibrated from 1 to 10 s to overcome start inrush current trips. With a small surface mounted footprint of 52 x 102 mm, the OLR 8 incorporates an 11-pin plug-in base and is fitted with three LEDs which signal power on, overload and trip conditions. An additional feature allows for either automatic or manual only resetting options. The relay has a user-selectable 110 or 220 V AC auxiliary voltage supply.
Setting new standards in dry-type transformer technology
Electrical Power & Protection
Dry-type transformer technology is gaining ground globally, and leading the charge in Africa is Trafo Power Solutions, in partnership with Italian manufacturer, TMC Transformers.
Read more...Advanced process control for the IRP Schneider Electric South Africa
Electrical Power & Protection
One of the main challenges in implementing South Africa’s Integrated Resource Plan is ensuring grid stability while integrating renewable energy sources and balancing fluctuating energy demands. Advanced process control can play an important role.
Read more...Revolutionising fault location and maximising solar production Comtest
Electrical Power & Protection
Comtest has on offer the Fluke GFL-1500 solar ground fault locator, a frontline troubleshooting tool that helps technicians pinpoint active ground faults in solar photovoltaic systems.
Read more...Supporting the AI boom with power architecture
Electrical Power & Protection
Hitachi Energy is supporting the 800 VDC power architecture announced by Nvidia, by developing a cleaner, more efficient way to power the next generation of AI infrastructure.
Read more...Kyocera releases new stacked capacitors
Electrical Power & Protection
Kyocera AVX has released the new KGP Series commercial-grade stacked capacitors for high-frequency applications in the industrial and downhole oil and gas industries.
Read more...More sustainable tyres
Electrical Power & Protection
Continental is prioritising the use of renewable and recycled materials in its tyre production
Read more...ABB drives rail modernisation and EV growth in South Africa
Electrical Power & Protection
ABB’s work in Africa in low- and medium-voltage infrastructure, safety-critical components and electrification puts it at the heart of accomplishing the Southern African Railways Association’s strategy.
Read more...Hitachi Energy’s power quality solution
Electrical Power & Protection
Hitachi Energy has announced the deployment of its power quality solution to connect Tanzania’s leading gold producer, Geita Gold Mine (GGML) securely to the national grid.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version