1-DAY COURSE ON "POWER TRANSFORMERS' BY IR LEE CHONG KIOW
17 Dec 2019 (8:00 AM - 5:00 PM) Cancelled
WISMA IEM, PETALING JAYA
Managed by: IEM Training Centre Sdn Bhd
Organised by: IEM TRAINING CENTRE SDN BHD
- Closing date before: 14 Dec 2019
Offline Registration Form - Download
PROFILE OF COURSE FACILITATOR
Ir. LEE CHONG KIOW is a 1974 electrical engineering graduate from Strathclyde University, Glasgow with more than 40 years of experience in the power supply industry. • Specialises in providing technical training of electrical courses and performing power system studies.
• Previously the Engineering Manager of Tamco Corporate Holdings Sdn Bhd, which manufactures indoor medium- and low-voltage switchgear. • More than 15 years working as a protection engineer in a Lembaga Letrik Negara and another five years in a large consultancy practice. • Suruhanjaya Tenaga certified competent/services engineer up to 275kV.
• Since 1997, trained more than 4,000 participants from electricity utilities, petrochemical industry and multi-national companies throughout Malaysia as well as in Singapore, Brunei, Oman, China, Myanmar and Vietnam and three countries in Africa.
• Carried out various training programmes for Petronas Instep, Brunei Shell Petroleum, Brunei LNG, Petroleum Development Oman, Tenaga Nasional Berhad, SESCo and Intel.
• To introduce various concepts related to several key aspects of power transformers, such as vector groups, paralleling and testing.
Basic principles. Voltage, current and power transformers. Dry and oilfilled transformers. Conservator and sealed type of transformers. Cooling of transformers. Use of tap-changers. Off-circuit and on-load tap-changers. Accessories.
Transformer Vector Groups
Windings and vector groups. Why is the turns ratio of a 33/11kV Dyn11 transformer not equal to 3? Reasons for use of Dyn and YNd for stepdown and step-up transformers. Reason why the neutrals of most transmission transformers are solidly earthed. Use of zigzag ZN earthing.
Conditions, advantages and disadvantages of paralleling two systems. Phasing tests for incomers using phasing sticks during commissioning. Need to check meter before and after use. Significance of vector groups before paralleling transformers. Effect of unequal voltages in parallel transformers.
Factory Acceptance Tests of Transformers
Resistance test. Open-circuit tests for voltage ratio and no-load losses. Open-circuit tests for Z% and load losses. Significance of Z% and transformer losses. Dielectric tests – induced voltage and separate source tests. Use of a 100 Hz supply for induced voltage tests. Site testing of vector groups.
• Young electrical engineers who wish to enhance their knowledge of power transformers. • Designers, chargemen and technicians who already have some basic understanding of the applications of transformers.
IMPORTANT: PLEASE BE INFORMED THAT THE COURSE WILL ONLY BE CARRIED OUT IF THERE IS SUFFICIENT NUMBER OF PARTICIPANTS. THE CONFIRMATION OR CANCELLATION EMAIL WILL BE SENT TO THE REGISTERED EMAIL ADDRESS ONE OR TWO WEEKS BEFORE THE EVENT DATES.
Rate stated does not include 6% SST
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