Three Phase Transformer (HEM)



Hanoi Electromechanical Manufacturing JSC (HEM) is a joint stock company found since 1961, a member of Vietnam Electrical Equipment Joint Stock Coporation (VEC), Ministry of Industry and Trade. HEM is now Vietnam’s leading manufacture in the field of electrical motors, generators, transformers and other electrical equipment.

With advanced technology, with the experiences gained from 50 years and development, HEM products have been favoured and consumed all over Vietnam. HEM’s ISO 9001-2008 International quality management system had been certified by the famous SGS International Group 

Sincerely thanks and warmly welcome customer’s cooperation and confidence in HEM’s products and services.

HEM’s comprehensive products and service range includes:

      1. Motors and generators

+ AC three phase motors and generators low and medium voltage.   

+ DC motors and generators.

+ Single phase motors

+ Multi-speed AC motors.

+ Three phase commuter motors

2. Power transformers

3. Other product

+ Industry fan.

+ Electromagnetic brakes.

+ Measurement transformers (CT&VT)

+ Complete electrical accessories combines with motors and generators such as motor starting board, seft-excited and voltage stabilizing boards.

4. Services

+ Special designs: in addition to an extensive range of modifications to standard types, special customized products can also be manufactured especially in the field of special drive application.

+ Repair service: HEM repairs electrical motors, generators and electrical equipment with high quality in short term.


Power transformer capacity


                               overall power transformer manufacture line


Distribution transformer products are manufactured in seft-contained synchronous line, with advanced equipment ad techology, imported from developed nations.

With the experience gained from 50 years in manufacturing electrical machine and equipment, HEM has experienced experts and skilful technicians and workers.

The  ISO 9001:2008 International Quality Management System of HEM had been certified by the famous SGS International Group.

ISO 9001:2008

Production line is equipment with the most automatic advanced equipement and technology to raise the quality of product such as:

                                                    Slitting line

                                           Cut to length line

                                                     Winds high voltage winding 

                                                     Winds low voltage winding

                                          Corrugated Steel Tank Forming and Welding line

                                                       Assembling transformer

                                                     Shot plating machine 

                                                    Foil coil winding machine

                                                           Oil filter system

                                         Vaccum absorbing system

                                      Testing lab

                                    Testing lab

                                            Transformer power warehouse

Some typical production of transformer was made by HEM:

Oil immersed transformer 10.000kVA - 22/6,3kV, Project: Yen Binh cement Plant

Oil immersed 6000kV - 35/6,3 kV, Project: Song Da Water Supply

Oil immersed 6000kVA, 35/6kV for Ebara Hai Duong Company Ltd

Oil immersed 7500kVA 35/6kV - Project: Lao Cai Power Company

Dry-type transformer 1250kVA - Project: Song Da Twin Tower

Dry-type transformer 1600kVA - 22/0,4kV - Project: Novotel Nha Trang Hotel

Allied Companies

  • EMIC
  • HEM
  • CTBT
  • EPT
  • CFT
  • HPMC