Other Services

We offer a wide range of value-added services to complement our core service. These include Electrical System Studies, Testing & Maintenance, Consultancy, LEW Services, Licensing & Training.

Electrical System Studies

Using ETAP, SKM and XGSLab software for:

  • Arc Flash Study (IEEE 1584)
  • Fault Current Analysis
    (as per IEC60909)
  • Protective Device Coordination Analysis
  • Load Flow Analysis
  • Cable Ampacity Calculation and Voltage Drop Calculation
  • Ground Grid Design
  • Harmonic Load Flow Analysis
  • Motor Starting Analysis
  • Optimal Power Flow Analysis
  • Optimal Capacitor Placement Analysis
  • Reliability Assessment Analysis

 

Electrical Testing and Maintenance

We provide testing and maintenance:

For switchgear:

  • Partial discharge measurement
  • Secondary injection test for protection relays
  • Contact resistance measurement
  • Primary injection test for CT
  • Applied voltage withstand test

For transformer:

  • Partial discharge measurement
  • Turns ratio and vector group measurement
  • Winding resistance measurement
  • Dissipation factor measurement
  • Sweep frequency response analysis
  • Dielectric frequency response analysis
  • Applied voltage withstand test
  • Induced voltage withstand test
  • On site DGA of transformer oil

For cable:

  • Partial discharge measurement
  • Voltage withstand test using AC VLF and AC 50 hertz test source
  • Monitored voltage withstand using AC VLF and AC 50 hertz test source
  • Dissipation factor measurement

Electrical Consultancy

  • Application for electricity connection to the local grid company, SPPG
  • Consultancy and project management
  • Engineering, procurement and construction for upgrading of Switchgear / Transformer / Cables

Electrical Licensing

We provide licensing service for the regulatory compliance
to the Electricity Act and its associated Electricity Regulations.

These range from small installations of 400 volts to large
installations of 400,000 volts.

Our reference list includes:

  • ExxonMobil, Micron at 230,000 volts
  • AUO, ExxonMobil, Keppel Seghers, Singtel DCW, SingSpring desalination, TPC, UMC at 66,000 volts
  • Applied Material, Ascendas, Chevron, Capitaland, Sumitomo Chemical, Singapore Refining Company, Sembcorp, etc at 22,000 volts

Electrical Training

ON Engineers provides a licensed electrical worker (LEW)
preparatory course.

It is to share experience and knowledge to enable the attendees
to be better prepared in attaining the LEW qualification from
EMA (Energy Market Authority) of Singapore.

The course is made up of 7 modules.

  • Module 1
    Introduction
  • Module 2
    Overview of electrical licensing
  • Module 3
    Electrical hazards and safety practice
  • Module 4
    Overview of SS 638, Code of practice for electrical installation
  • Module 5
    Other mandatory code of practice for generators and temporary supply
  • Module 6
    Electrical testing and inspection
  • Module 7
    Design requirements for 400 volts switchboard
  • LEW Q&A Session

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