Sparks Electrical News November 2018

CONTRACTORS’ CORNER

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EFFICIENT AND RELIABLE MOTOR PROTECTION E lectronic Motor Protection relays are designed for motor applications where efficiency and reliability are essential. From simple or basic on the motor’s thermal characteristics under loaded motor operation, phase failure due to a short or con- tact failure, motor slowdown due to load, damage when the motor locks or even motor reversal due to incorrect motor wiring possibly during an installation or replacement.

The Hyundai HGMP N60I Series Electronic Mo- tor Protection Relay from MCE Electric provides operational reliability with real-time super-fast data processing based on a 32-bit ARM core chipset. It also utilises Rogowski current transformers that easily surpass conventional CTs providing the high precision measurements required to better protect electric motors. The N60I will ultimately provide maximum motor runtime under any load. The N60I has multiple protection relay func- tions complete with overload warnings and a real-time load rate display. The trip history log and intuitive display allow users to ana- lyse, breakdown and effectively troubleshoot

protection to advanced motor protection applica- tions, they use dedicated functions and communica- tion to manage motors more effectively. Electronic Motor Protection Relays replace old legacy thermal overload protection units. Electric motor faults occur on a daily basis and Electronic Motor Protection Relays efficiently pre- vent motor burnouts, saving on costly repairs and replacements, and preventing expensive downtime. We can summarise the relay’s functionality by saying it provides protection from overload damage based

What you need is sensitive built-in current detec- tion that allows for immediate recognition of phase loss and identification of the trip cause, allowing you to take action to eliminate the fault quickly and ef- fectively even if the motor is running at low loads. Electronic Motor Protection Relays are superior, uti- lising real-time precision monitoring and data pro- cessing at high speed.

problems as they arise. The cumulative operating time counter allows you to effectively plan your mo- tor maintenance schedule and, as we all know, good maintenance is key to operational reliability. What if the earth leakage becomes damaged or there is some other kind of ground fault? The Hyun- dai N60I will react within 50 msec tripping the motor instantaneously. You can also set a delay time for a particular motor’s start-up requirements by setting overcurrent protection based on a hot or cold curve. Cold being defined as a period of operation after a period of inactivity and hot after sufficient heat has been applied to the motor for a sustained period. With the Hyundai N60I you can also perform a live relay test check that does not loose energy to the circuit. The N60I’s reset functionality also al- lows you to perform a manual reset, electrical re- set or automatic reset using the built-in timer. The N60I is a separated unit comprising the main unit and display unit. The main unit can be set to rail mount or screw type to suit the panel environment. The separate display unit can be in- stalled on the front of the panel for easy monitor- ing and unit programming. The Hyundai N60I Electronic Motor Control Protection Relay from MCE Electric delivers supe- rior current reliability, measurement data and mo- tor protection. Mark Wilson, who has served as Chairman of ACTOM since 2008, resigned from this posi- tion at the end of August 2018 for personal rea- sons. In announcing Wilson’s resignation, Group CEO Mervyn Naidoo said Andries Mthethwa, the group’s Deputy Chairman, will serve as Acting Chairman until Wilson’s successor is appointed. Wilson will continue to serve as a strategic advi- sor to ACTOM’s senior management and remains involved as a shareholder. Paying tribute to Wilson’s legacy as Group CEO and Chairman, Naidoo said: “Mark was instrumental in the creation of ACTOM in its present form. It remains an absolutely phe- nomenal business, despite the prevailing challenging economic environment. The en- trepreneurial culture and management phi- losophy that has been developed in ACTOM is unique in South Africa, and is a model that has achieved superb outcomes for all stakeholders over the years. “Mark has nurtured and developed many Divisional CEOs in the group, including myself, during his tenure,” he added. ACTOM’s turnover increased by 664% un- der Wilson’s leadership since his appointment as Group CEO 22 years ago. The Group has diversified and expanded significantly through a series of strategic acquisitions of local groups and businesses operating in allied fields, as well as through substantial expansion of the group’s existing production, repair, project management, and maintenance and service operations. Dur- ing that time it also became a majority South African owned group, with black empowerment stakeholders acquiring a substantial shareholding, which today stands at 51,3%. MARK WILSON RESIGNS AS CHAIRMAN OF ACTOM Enquiries: www.mce.co.za

Enquiries: +27 (0)11 820-5094

SPARKS ELECTRICAL NEWS

NOVEMBER 2018