PRODUCT News
May 2014
MODERN MINING
59
After 56 years of extensive experience in
the local and global market, Actom Group
company Marthinusen & Coutts (M&C)
has earned its stripes as Africa’s largest
medium voltage machine repairer. With
four production workshops covering
32 000 m
2
in Southern Africa, the com-
pany is conveniently located to provide
its customers with a fast turnaround on all
machine repairs and upgrades.
To ensure complete customer satis-
faction, Marthinusen & Coutts has made
substantial investments in equipment
and services at its facilities in Cleveland,
Benoni, Rustenburg and Kitwe, Zambia.
The machine shops house shaft and bear-
ing presses, horizontal and vertical boring
mills, CNC lathes and machine centres, as
well as micro welding equipment.
Marthinusen & Coutts is also solely
licensed to apply InsulCore to cost effec-
tively solve selected core problems. The
InsulCore chemical treatment repairs
electrical lamination steel by simultane-
ously etching inter-laminar shorts and
forming a durable core plate, without hav-
ing to dismantle the core. The company’s
state-of-the-art 32-ton Schenk balancing
machine is complemented by the compa-
ny’s seven test facilities for full mechanical
test loading of HV, LV and DC motors.
In addition to its well-equipped facili-
ties, Marthinusen & Coutts regularly
deploys its experienced team to sites across
the continent. The comprehensive on-site
capabilities have been used by a number
of large blue chip mining and industrial
companies to provide high level repairs,
where logistics or urgent time frames dis-
courage transportation of machines to and
from the central workshops.
Capabilities include coil design and
manufacturing from VPI class F and
H, through DC and traction pole
coils to equaliser coils. AC and DC
fans are repaired or refurbished,
tested and balanced to ensure
conformance with stringent test
parameters. Redesigning of exist-
ing motors extends their lifespan
and improves their efficiency and
reliability.
In addition to repairs and load
testing of vibrator motors on a
specialised test bed, Marthinusen
& Coutts also undertakes repair
and refurbishment work on specialised
motors. Notable projects include the repair
and specialised assembly of scraper winch
motors, combined with bearing modifica-
tions from imperial to metric, to ensure
cost effective repair on older motors. In
addition, the company manufactures
and repairs specialised 75A and 75D loco
motors and 8E traction motors.
In the power generation market, the
company undertakes both electrical and
M&C is Africa’s largest medium voltage machine repairer
Balancing of a Kelvin turbine by Marthinusen & Coutts in its 32-t
state-of-the-art Schenk balancing machine.
mechanical repairs, overhauls and com-
plete refurbishments. General overhauls
of any design or type of generator stator
or rotor, including modifications, rewind-
ing and on-site balancing, are offered.
Mechanical services include fault find-
ing and root cause analysis, diaphragm
refurbishment, re-blading and balancing
of turbine rotors, as well as metallurgical
investigations and reporting.
Marthinusen & Coutts, tel (+27 11) 607-1700
Contactors and relays offer reliable solution
The WEG range of SABS-approved CWM
contactors and thermal overload relays,
with a quality level proven to exceedmarket
standards, offers a reliable solution to low
voltage applications in electric panel assem-
bly for OEMs, distributors and end users.
The compact contactors include a range
from 7 to 22 amps AC-3 and a standard
range from 9 to 800 amps AC-3 presenting
the most suitable contactor for any indus-
trial application. Included in the range are
auxiliary contacts and various coil voltages,
as well as all accessories.
The WEG CWM general purpose con-
tactor line has been designed with due
consideration for industrial duty and reli-
ability, as well as extended mechanical and
electrical life with dependable switching
in even the most heavy-duty applications.
These contactors allow total panel space
optimisation, while reducing inventory is
easy with CWM common accessories.
All WEG contactors are tested and
approved to be used under Type 1 and Type
2 short circuit coordination.
Kirsten Larkan, Zest WEG Group, tel (+27 11) 723-6000
