extronics iUPS101, Руководство по эксплуатации

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Operating Manual
51
9 Configuration of AC Transfer
9.1 Activate immediate detection of grid outage (UPS) {1435}
This parameter allows to starting the inverter mode as quick as possible in case of
fluctuations of the AC-In grid. This function is useful when it comes to very sensitive
loads that require an uninterruptible power supply (UPS). If this function is active,
being connected to a fluctuating source (weak grid or unstable generator) will lead to
a frequent switching between inverter and charger modes by opening and closing of
the transfer relay.
9.2 Tolerance on the immediate detection of a grid loss {1510}
When the immediate detection of a grid loss is activated, this parameter allows you to
increase or decrease the detection sensitivity. The higher the figure the weaker the
sensitivity.
9.3 Transfer AC-In for delayed transfer opening {1199}
This configuration determines the voltage below which the transfer relay will open
after a certain period of time. The UPS will then run in inverter mode.
9.4 Delay before passing to inverter {1198}
When the input voltage is below the transfer voltage to the inverter, the transfer relay
does not open immediately. With this configuration, the period during which the
transfer remains drawn can be specified. After this duration, the transfer relay is
opened and the inverter function is activated (if the function has not been blocked or
deactivated).
This delay is particularly useful on less stable grids or with generators with an output
voltage that varies considerably during the activation of heavy loads.
9.5 Immediate transfer AC-In voltage {1200}
Use the adjustment of this configuration to adjust the critical voltage for the operation
of equipment that must not experience interruptions. In the case of a fluctuating grid,
if its voltage passes below the value of the configuration this immediately activates
the inverter function, thereby ensuring supply to the consumers.
9.6 Frequency delta accepted above End {1505}
This setting allows you to determine the upper limit of the accepted frequency. This
value is added to parameter {1112}, the output frequency of the inverter. If the
frequency of the source exceeds this value, the transfer relay is opened after the
duration determined by the setting {1507}.