Power quality tips

How to protect customers' equipment

While it is impossible to completely avoid voltage dip, customers can minimise its impact by:

• Installing a true on-line type Uninterruptible Power Supply; or
• Installing equipment with “ride-through” capabilities.  

True on-line type Uninterruptible Power Supply (UPS)

UPS devices provide continuous and conditioned power to equipment. It is not affected by voltage fluctuation, voltage dip or loss from input power.

When choosing a UPS, think about the:

• Type and size of power load involved; 
• Level of efficiency required;
• Amount of noise and heat the UPS generates; and
• Harmonic generation from the UPS meets the corresponding requirements. 

Customers may need to consider several other technical specifications when choosing a UPS. Speak to customers' equipment supplier or consultant for more advices.

More information

Customers may join our Power Quality Workshops. Customers may also refer to the following resources: 

• Power Quality Handbook for Your Facilities (PDF)
• Case study: Ideal LV Changeover Scheme Design Prevents Building Supply Interruption (PDF)
• Case study: Choosing among Voltage dip compensation Devices on the Market (PDF)
• Lifts, Escalators (PDF)
• Production equipment in factories (PDF)
• Residual Current Device (RCD) in Data Centre (PDF)