weg transformers africa - hope... · wta heidelberg, gauteng, together with wta wadeville...
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WEG Transformers Africa
Weg Transformers Africa repair, supply and service transformers, miniature
substations and switchgear for mines, local municipalities and companies across a variety
of economic sectors.
WTA Heidelberg, Gauteng, together with WTA Wadeville ,Gauteng and WTA
Richardsbay (the Kwa-Zulu Natal Branch), custom manufacture products to industry
standards, and will repair and refurbish existing units, either on the clients site or if
required at the companys in-house manufacturing facility. All items are designed and
manufactured to SABS 780 and ISO 9001 standards, emphasising quality materials
and professional workmanship, in line with the companys best practice principles.
WTA Heidelberg designs and manufactures resin cast switchgear. This switch is
commercially known as the Interswitch B 20. The NX3F Tiger will also be also be
manufactured in Heidelberg.
WTA BUSINESS OVERVIEW
WTA PRODUCTS & SERVICES
All distribution and power
transformers are manufactured
to SANS780, BS171, and IEC159
specifications under ISO:9001
Distribution and Power transformers
The manufacture of new transformers, from 10 kVA up to 100 MVA and 132kV
The repair and rewind of transformers up to 100 MVA and 132kV
The manufacture of new mini-substations, up to 1600 kVA, and 33kv
The repair and rewind of mini-substations, up to 1600kVA and 33kV
The supply of new switchgear, for voltages from 3.3kV to 33kV
The repair and service of switchgear, in house and on site
The manufacture of resin cast switchgear, for voltages up to 11kV (SANS Approved)
The manufacture of oil fused ring main unit (NX3F Tiger)
PRODUCTS & SERVICES
A sophisticated in-house laboratory is used to test and analyse transformer oils. These
tests can detect markers and other harmful substances in the oil, which can then be
Sample analysis includes:
Key gas detection
PCB (polychlorinated biphenyls) detection
Field services include both mechanical maintenance work and on-site
oil purification and regeneration.
The purification and regeneration of industrial oils on site
Field repair services:
The maintenance and repair of transformers up to 100MVA, and
switchgear up to 132kV
All insulation oils tests are
performed in compliance with
Maintenance and repair services
The replacement of leaking gaskets, neoprene cone rubbers, bushings, inspection covers
on on-load tap changers, conservators, valves etc
Sandblasting and spray painting of transformers and components
The supply and testing of protective relays
The supply of silica gel and breathers
In-house refurbishment and repairs of transformers include complete rewinds, re-gasket,
vacuum treatment and drying of cores, sandblasting, spray painting and complete testing of
units to SABS and IEC standards
Dedicated technical field
teams are available 24/7,
enabling rapid response
to service calls
PRODUCTS & SERVICES
The company offers a unique personal repair service that is available
around the clock. Critical to the operation of clients processes
and operations, the products supplied by WTA form an integral
part of clients supply chain. As such, rapid response and
service is integral to the good business offering of WTA. Further to
this, the company offers best-in-sector manufacturing turnaround,
with custom product deliveries usually occurring within 10 14
weeks, while spare parts are usually available off the shelf.
The companys extensive in-house manufacturing capabilities
give it compelling advantages over its competitors in maintaining
full control over the entire developed system, both in terms of the
quality and the costs of the manufacturing process. This means
that customers enjoy highly competitive pricing as well as a
consistent, integrated and complete service.
Stringent quality control is exercised over all products leaving the
factory, including paintwork, labels and gaskets. Failure rate on
WTA transformers is significantly lower than industry
standard at approximately only 0.1%. WTA also incorporates
a pre- and post tanking inspection to ensure the highest level of
compliance. Manufacturing is completed under stringent
ISO:9001 quality controls.
The company is one of only a few that keeps maintenance
records on behalf of its clients, a process which ensures the
continuity of information. This service is important for insurance
purposes and the difficulties associated with staff turnover at
PRODUCTS & SERVICES KEY DIFFERENTIATORS
In order to facilitate consistent market demand, WTA
maintains high levels of a diverse range of stock. This means
that customers are able to rely on WTA for swift access to crucial
spares and new units which are often critical to their needs.
Technicians have daily hands-on experience of dismantling and
building transformers, switchgear and mini-substations, from a
variety of manufacturers, giving them a thorough understanding
of both the industry and their customers needs.
Currently, WTA manufactures approximately 180 mini-
substations and 600 transformer units a year. Combined
facilities could accommodate rapid expansion of services and
High voltage test facilities:
WTA boasts with 3 individual test labs. WTA Heidelberg is
capable of testing up to 100MVA 132kV (IEC and BS) .
Wadeville operations can test up to 10MVA 66kV
PRODUCTS & SERVICES KEY DIFFERENTIATORS
The workshop boasts a 120 tonne overhead crane allowing
access to hard to reach existing installations. A variety of mobile
cranes, including a low-bed crane truck, enable WTA to
collect break-downs and deliver replacements at client sites.
Staff are able to immediately load, collect and repair
transformers of up to 25 tonnes.
The company is active in the following industrial sectors, demonstrating a diverse range of clients, and thus a well-hedged revenue flow:
CUSTOMERS & MARKETS
Commercial Industrial Mining Civil development Local government Utilities Telecommunication
LOCATION & PREMISES
6mm High risk
Southern Africa is experiencing a growing demand of new and
refurbished electrical equipment. The WTA group has a clear
and defined strategy moving forward to capitalise on this
growth, including the following specific projects:
Business opportunities: The company has identified growth opportunities in the repair
of power transformers and the supply of new distribution
transformers in the local market.
Excellent export opportunities exist in Africa where a number of
new power stations and new infrastructure is being built, and the
refurbishment of existing equipment is required.
Equipment to increase productivity: To manage demand, the WTA has acquired another foil
winding machine to assist the 1400 mm CNC foil winding
machine and two CNC high voltage winding machines that will
allow the company to improve its production rate and to
tender for higher volume orders than it can presently manage.