B400R 1-3kVA User Manual
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6. Special function
The B400R series has some special functions, which could satisfy some applications. These functions have
their own features; please contact your distributor or Borri for further information before using these
functions.
6.1 HE function
6.1.1 Brief introduction to the HE function
If the HE function is set to enabled, after the UPS is turned on, the power used by the load is directly
supplied from the mains via an internal filter while the mains is in normal range, so high efficiencies
can be gained in HE mode. It is also called economy (ECO) mode. If the mains is lost or abnormal,
the UPS will transfer to Line mode or Battery mode and the load is supplied continuously.
The great advantage to this mode is that overall efficiency is >96% of UPS, meaning less power is
wasted. But the disadvantages are:
1) The load does not have the same level of protection as it does in Line mode, as the load is directly
supplied from the mains;
2) The transfer time of the UPS output from HE mode to Battery mode is about 10ms. So the
function is not suitable to some sensitive loads, and the region where mains power is unstable.
6.1.2 Set the function
This function can be enabled through the LCD setting whilst in Bypass mode or Standby mode.
6.2 Converter function
6.2.1 Brief introduction of Converter function
In converter mode, the UPS will operate with a fixed output frequency (50Hz or 60Hz). During mains
failure or abnormality, the UPS will transfer to Battery mode and the load is supplied continuously.
The advantage to this is that the output frequency is fixed, which may be a requirement for some
very sensitive loads.
But the disadvantage is the load capacity of UPS will be de-rated to 70% in converter mode.
6.2.2 Set the function
This function can be enabled through the LCD setting whilst in Bypass mode or Standby mode.
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