Products / Transformers

Technical Data

Based on leading technology and integrated with innovation to suit extreme climate environments such as high humidity. We supply transformers from various reputable local and global Original Equipment Manufacturers, designed, manufactured and tested according to the latest IEC, SANS, ANSI and ISO stand- ards. Fully computerized design process utilizing up to date software for design and calculation combined with years of experience.

 

Generator Step Up Transformers

• Rated capacity: up to 500 MVA

• Rated Voltage: up to 420 KV

Power Transformers

• Rated capacity: up to 500 MVA

• Rated Voltage: up to 420 KV

• Single-phase & three-phase transformers

• Substation transformers & autotransformers

• Earthing transformer

• Dual voltage transformers

Distribution Transformers

• Rated Capacity: Up to 1 MVA

• Rated Voltage: Up to 36 KV

Cast Resin Dry-Type Transformers

• Rated Capacity: Up to 3150 MVA

• Rated Voltage: Up to 36 KV

Advantages

• No fire hazard

• No Partial discharge

• Maintenance free Can be installed in restricted space

• Low load losses

• Excellent resistance to short circuits

• Installation as close as possible to the center of load and consumption

• No toxic substances 

• Low noise level

• Humidity resistant 

• Self-extinguishing

Special Transformers 

Furnace Transformers

• Rated capacity: up to 50 MVA

• Voltage regulation could either be direct or through a booster transformer.

Due to the extreme heat levels generated in the transformer, OFWF cooling systems are normally used.

Applications


• Mines
• Oil & Gas industries
• Mines Oil & Gas Industries

= Offshore platforms

= Petrochemical plants
• Construction and Cement industries

• Industrial factories
• Rail
• Airports
• Mobile substations
• Marine & Shipping

Reactors

SHUNT REACTORS

• Rated capacity: up to 50 MVAr (three phase)

• Rated voltage: up to 420 KV

Mobile Transformers

• Rated capacity: up to 50 MVA

• Multi-ratio Voltages (Primary & Secondary)

Rectifier Transformers

We can supply different types of Rectifier transformers used in six-phase,

12 pulse or any other complex arrangement rectifiers.

Instrument Transformers

Performance

• Um: 36 to 800kV

• In: up to 6000A

• Short circuit: up to 100 kA (Idyn: 250 kA peak)

• Secondary cores: up to 10

Key Features

• Top core design (low primary winding losses)

• Low leakage reactance

• Partial discharge free on power-frequency withstand voltage

• Stainless steel bellows oil expansion system

• Extreme temperature range available (-60 to +60°C)

• Extensive experience in seismically active regions • Minimum oil design

• Explosion-safe

• Maintenance free

The open core concept, with its significant advantages, is incorporated in these units and distinguishes them from solutions available on the market today. The voltage transformers are designed with exceptional longevity and reliability, aiming for at least 50 years of service life.

Performance & Key Features

• Um: from 72,5 kV up to 550 kV
• Up to 6 secondary windings
• Partial discharge free on power-frequency withstand voltage
• Unique ferroresonance immune design (open type magnetic core)

• Explosion safety – Internal arc resistant
• Stainless steel bellows oil expansion system
• Extreme temperature range available (-60 to +60°C)
• Extensive experience in seismically active regions
• Minimum oil design
• Maintenance free

Combined Instrument Transformers – Type VAU

The unique and original single insulation design makes these units stand out in comparison to conven- tional solutions present on the market today. The combined transformers are designed with exceptional longevity and reliability, aiming for at least 50 years of service life.

Performance

  • In: up to 6000 A

  • Um: 72,5 to 550 kV

  • Short circuit: up to 100 kA (Idyn: 250 kA peak)

  • Secondary cores: up to 10

  • Secondary windings: up to 6

 

Key Features

• Top core design (low primary winding losses)

• Low leakage reactance type

• Unique ferroresonance immune design (open type voltage transformer magnetic core)

• Explosion-safe – internal arc resistant

• Partial discharge free on power-frequency withstand voltage

• Stainless steel bellows oil expansion system

• Extreme temperature range available (-60 to +60°C)

• Extensive experience in seismically active regions

• Minimum oil design

• Maintenance free

• Space and cost savings.

Transformer Monitoring System

Transformers are one of the key and most valuable components in a power system. Equipping them with an on-line monitoring system is essential for information gathering, condition assessment, better management and decision making. Decades of experience in transformer design, production and on-site diagnostics as well as a field-proven hardware platform are built into a state-of-the-art monitoring and diagnostic systems.

Benefits

• Detects incipient faults and assists in preventing failures and unplanned outages

• Enables the condition based maintenance

• Improves staff safety and environmental protection

• Provides valuable data for a root cause analysis and an investigation in cause of a failure event

• Helps in optimizing transformer performance and enables better asset management

( overloading, lifetime expectancy estimations)

• Makes your transformer ready for the ‘Smart Grid’

Key Features

• Comprehensive on-line monitoring system for all types of power and shunt reactors

• Modular and expandable system for a new or an existing transformer (retrofitting),

open to any trans former manufacturer

• Providers monitoring and diagnostic for all vial transformer parts by integrating

the available sensors and supporting various IED communication protocols

• Built-in models for transformer condition assessment ( bushings, thermal model, insulation ageing, cooling efficiency, OLTC)

• Advanced trending analysis tools

• Interpretation methods of fault gas analysis according to the relevant IEC and IEEE standards

• User defined alarm limit and gradient setting

• Long term archival of data and event logging

• Periodic automatic report generation

• Various remote access options.