NewElec’s 100M Series of electronic motor protection relays are compact in design and are ideally suited for fitting into gate-end boxes for protecting underground coal cutting machinery and transformers.
Motors and machinery are provided with protection against phase unbalance and loss, even on lightly loaded motors. The relays accommodate the thermal withstand capabilities of the protected motor and provide thermal protection for supply cables, as well as overall short circuit protection.
Warning LEDs indicate when the respective threshold settings are exceeded. In the event of a trip, the respective LED and the main trip LED are latched in order to assist maintenance personnel in identifying the cause of the trip.
The 100M Series is available in ampere calibration from 5 to 360 A, split over three ampere ranges, or in percentage calibration. Selectable motor starting curves from 2 to 10 s, as well as a thermal envelope that exactly accommodates the duty design parameters of the motor are available. This is achieved by selecting thermal lock-out periods ranging from 30 s (120 stop-starts per hour) to 10 minutes (6 stop-starts per hour).
The main trip relay comprises one n/o and one n/c contact. The short circuit protection trip contact is a dedicated n/o designed to operate a shunt trip on a backup circuit breaker.
During operation the relays ensure that the main contactor is not used to clear potentially damaging high energy faults. User-friendly labelled setting up dials indicate motor load, start time and short circuit levels. Any fault condition is identified by panel mounted latched fault diagnostic LEDs.
With a small 52 x 113 mm footprint, the relays plug into a chassis-mounted 11-pin base for ease of maintenance.
Rail electrification and EV solutions for integrated transport systems
Electrical Power & Protection
A comprehensive range of solutions for rail electrification and electric vehicles is available from leading technology provider ABB, contributing significantly to integrated and sustainable transport systems.
Read more...PPS delivers containerised distribution board for Western Cape hybrid power project
Electrical Power & Protection
South African electrical enclosure specialist Power Process Systems has successfully completed the design, fabrication and commissioning of a 4000 A containerised distribution board for a wind/PV solar hybrid renewable energy project on a site in the Western Cape.
Read more...The choice of a thermal carrier is critical for optimal processing
Electrical Power & Protection
Historically steam, fuelled by coal, has been the most prevalent thermal carrier in South African industry. However, times are changing, with the manufacturing and processing sector needing to review the energy reticulation systems and thermal carriers currently in use.
Read more...ABB’s blueprint for a net zero future
Electrical Power & Protection
ABB’s Mission to Zero is a strategic initiative aimed at achieving a sustainable future characterised by zero emissions, zero accidents and zero waste.
Read more...General-purpose 350 W AC-DC power supply
Electrical Power & Protection
The TDK-Lambda GUS350 series of compact single-output general-purpose power supplies addresses the need for an economically priced product while maintaining reliability and quality.
Read more...Ground-breaking battery tester Comtest
Electrical Power & Protection
Midtronics offers the proven MVT handheld battery tester. This revolutionary tool, powered by MDX-AI, is set to redefine the standards of battery diagnostics and testing in the automotive industry.
Read more...Energy audits pave the pathway to sustainability and savings Schneider Electric South Africa
Electrical Power & Protection
Energy audits serve as essential tools for businesses looking to reduce costs and meet environmental targets. By analysing energy consumption across systems such as lighting, HVAC, ICT and water infrastructure, audits identify inefficiencies and quantify carbon footprints, enabling data-driven decisions for operational and financial optimisation.
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