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What are the differences between 'Online' and 'Offline'?
Off-line (VFD) systems are usually low cost products designed for a simple one or two user PC installations, they offer little or no protection...
What are the main compnents of a UPS system?
Rectifier Converts AC voltage to DC voltage, recharges the batteries and maintains float voltage, handles overloads and buffers surges, can...
Why do you need a UPS?
An Uninterruptible Power Supply (UPS) is used to protect critical loads from mains supply problems, including spikes, voltage dips, fluctuations...
What is a Bypass Switch?
Static Bypass switches are used to bypass the UPS normal operation, in cases of high inrush or fault conditions. Manual bypass switches are an...
What should be considered when buying a UPS system?
Existing Installations Consider a central back-up system to eliminate expensive re-cabling. Wise to involve a company specialising in power...
Why install a Bypass Isolation Transformer?
When generators are installed, it is common to use four pole changeover switchgear or contactors when transferring from mains to generator,...
Can I add more UPS modules to the system when my load increases?
Yes, the MST, MPS and MHT ranges employ a plug and play parallel system that allows additional units to be added to an existing system at a...
When would I need a Generator?
Generators are usually used where there is likelihood that the load cannot be off for any length of time or in areas where the mains supply is...
What is a Brownout?
A brownout, sometimes also called a ‘sag’, is a "dip" in the voltage level of the electrical line. When a brownout occurs,...
What are the benefits of an External Maintenance Bypass Switch?
Capability for total isolation for UPS maintenance, with no disturbance to the load. Greatly reduced cost and size when compared to other...