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What is a Temperature Compensated Charger?
Variations in ambient temperature presents the greatest threat to battery installations. Special circuitry can be incorporated in the UPS to...
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...
Input filters or 12 pulse rectifiers?
With current recommendations demanding lower levels of input harmonics (THDi) it is more common for larger systems to require some form of input...
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...
Do I require a 12 Pulse rectifier or Input filter with the MHT range of UPS?
By selecting a UPS from our MHT range you can rely on the advanced rectifier design to dramatically reduce input current harmonics to <3%,...
Why choose 'Transformer-based' or 'Transformer-less' UPS?
Transformer based Traditional technology, typically available from 10 kVA, suitable for industrial applications, galvanic isolation with...
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 'Line Interactive' UPS?
Line interactive technology sits between offline and online. The load is fed from mains during normal operation, however unlike...
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,...
What should be considered when selecting a battery?
Type of enclosure - Sealed or Vented - Design life 5, 8 to 10 or 10+ years - Standard or BS6290 part 4 compliant - Battery Autonomy - Floor...