About Us

GEF Technologies Sdn. Bhd. has been in the business of Electric Motor Rewinding and Repair Services in the Klang Valley since established in 1960 (previously known as Syarikat Weng Hin Electrical Works).

In meeting with new growth & challenges, from 1st Jan 1999, GEF Technologies Sdn. Bhd has restructured into a private limited company and has diversified into other related scope of works & services detailed as follows.  

GEF Scope of Business Services :

  • Sales of Standard & Special AC /DC Motors, MV Motor Starters, Medium Voltage Power Factor Correction Capacitor Banks

  • Complete repair / Restoration / rebuilding of All type of large & medium frame AC & DC Motors, Transformers, Generators

  • Overhaul Service for All types of Medium & Large Frame AC /DC Motors, Rotary Frequency Converters, Generators, Transformers

Our Service

1. Selling AC & DC Motor, Transformer & Starter
2. Overhaul Service High Voltage Motor
3. Rewinding High Voltage Motor
4. Overhaul & Rewind Transformer
5. Overhauling & Rewinding of DC Motor

1. Selling AC & DC Motor, Transformer & Starter

i. Supply New GEF AC Motor
ii. Supply New High Voltage Motor
iii. Supply New Large Frame DC Motor
iv. Supply New High Voltage Transformer
v. Supply New Oil Immerse Type Transformer
vi. Supply Power Correction Capacitor Bank
vii. Supply New Motor Starter For HT Motor
viii. Supply GEF Roller Table Motor
ix. Supply New Motor Starter Panel

Click on link to know more about AC & DC Motor, Transformer & Starter
http://gef.com.my/selling_AC_DC_Motor_Transformer_Starter.html

2. Overhaul Service High Voltage Motor

i. Complete Overhaul 1 x 650 kW, 6600 Volt, 989 RPM, Exhaust Fan Slip-Ring Motor
ii. Complete Overhaul 1 x 1330 kW, 6600 Volt, 992 RPM, Primary Crusher Motor
iii. Complete Overhaul 1 x 1400 kW , 6600 Volt , 988 RPM , Siemens Motor
iv. Complete Overhaul 3 x Units 5000 kVA, 11kV, 500 RPM, Brushless Synchronous Motor

Click on link to know more about Overhaul Service High Voltage Motor.
http://gef.com.my/overhaul_service_high_voltage_motor.html

3. Rewinding High Voltage Motor

i. Complete Rewind High Voltage Motor
ii. Complete Rewind HT Slip Ring Motor
iii. Refurbishment 1 x unit 2200kW, 11kV, Ex-Proof Motoriv. In-situ Rewinding of 20MW Generator

Click on link to know more about Rewinding High Voltage Motor.
 http://gef.com.my/rewind_high_voltage_motor.html

4. Overhaul & Rewind Transformer

i. Overhaul Service HT Transformer
ii. Repairing & Refurbishment - HT Transformer
iii. Complete Overhaul Service - HT Transformer
iv. Complete Rewind - HT Transformer.

Clink on link to know more about Overhaul & Rewind Transformer. 
http://gef.com.my/overhaul_and_rewind_transformer.html

5. Overhauling & Rewinding of DC Motor

i. Rewinding Of DC Motor Winding
ii. Repairing & Refurbishment Of DC Motor
iii. Overhaul Service Large DC Motor
iv. Overhaul Service DC Motorv. Rewinding Of DC Motor.

Click on link to know more about Overhauling & Rewinding of DC Motor. 
http://gef.com.my/overhaul_rewind_DC_Motor.html

GEF Workshop & Facilities:

Current Sungai Buloh Plant has total built up workshop area of estimated to be more than 10,000 sq. ft. (1,000 sq. meter).

  • Lifting Zone 1 & Lifting Zone 2
  • 5MT Overheard Crane (Lifting Zone 1)
  • 15MT Overhead Crane (Lifting Zone 2)
  • Temperature Controlled Electric Oven
  • Smaller Oven
  • Washing and Cleaning Bay
  • Complete No-Load Testing Facility for MV Motors
  • Laser Alignment at Site. 
  • Motor Bearing Installation using Induction Heating System and complete SKF Bearing installation. 
  • SAMATIC (made in USA) Inter-turn shot and hi-pot test set – Surge Voltage Test Set – complete with printer and analyzing lap-top computer. 
  • High Pot Testing of Stator Winding After Complete Rewinding. 
  • Thermal Imager Instrument. 

Awards & Certificates

  • Sample of Service Report
  • Suruhanjaya Tenaga Certificate
  • Awarded Prize from Suruhanjaya Tenaga, Malaysia(Energy Commision, Malaysia) Prize: Top seller of High Efficiency Motor ( EFF 1 ) in Malaysia for year 2005 -2006.
  • AEMT Certificate of Attendance
  • The International Certification Network Certificate
  • ISO 9001 Certificate
  • Lembaga Jurutera Malaysia Certificate
  • Jabatan Bekalan Elektrik Certificate
  • Fuji Electric Training Certificate
  • AEMT Member Certificate

Click on link to view  Awards & certificates image.
http://gef.com.my/awards_and_certificates.html

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   30DA6B92 A609 11E1 BB79 12314000F07E

1. Selling AC & DC Motor, Transformer & Starter

   28665660 A609 11E1 953A 12314000960A

Our Specialized:

> SUPPLY & INSTALL MV / LV MOTORS , DC MOTORS 
> DESIGN & MODIFY EXISTING DRIVE SYSTEMS 
> REWIND / SERVICE , OVERHAUL & REFURBISHMENT FOR :- 
  • LV / MV MOTORS , LV / MV TRANSFORMER 
  • MOTOR STARTER CONTROL PANEL 
  • ROTARY FREQUENCY CONVERTER 
  • EXPLOSION PROOF MOTOR-EXD II ( FUJI ELECTIC ,JAPAN)
  • ELECTRIC DC MOTORS ( SICMEMOTORI , ITALY )