PWR
KMB systems
6. Operation
Signal LED:
In OK:
Supply voltage over 90V~ or 127V=
Overvoltage:
Supply voltage over 246V~ or 350V=
Out OK:
Output voltage over 22,8V= (PWR xN 60W 24V) or 20V= (PWR xA 60W 24V)
Batt. Low:
Voltage on accumulator bellow 22V= (only PWR xA 60W 24V)
Alarm, signal output – active state is closed
Out OK:
Output voltage is over 22,8V= (PWR xN 60W 24V) or 20V= (PWR xA 60W 24V)
Batt. Low:
Voltage on accumulator bellow 22V= (only PWR xA 60W 24V)
Operation of the PWR without accumulator
While supply voltage is in stated range (see charts), output voltage level depends on load its function is
presented in output chart. Operator have to Operator must ensure that drawn power don‘ t cross limits
stated in thermal chart.
Operation of PWR with accumulator
In case of loss of power supply PWR will smoothly switch to supply from accumulator. Output voltage is
equal to voltage of the accumulator. Accumulator is permanently disconnected from load in case it is dis -
charged bellow limit. For further operation power supply have to be restored. At same time accumulator
will be charged – charging current is based on other loads to prevent overload of PWR. Maximal charging
current is limited to 0,75A. Output voltage is based on charge level of accumulator (see charts).
Operator have to Operator must ensure that drawn power don‘ t cross limits stated in thermal chart.
This model can be operated also without accumulator. In such a case output voltage will be equal to max-
imal voltage of the output (see specifications).
Operation of PWR from line-to-line voltage in 3~400/230V networks (only PWR 1x xx):
One line is connected to L terminal and other line to N terminal. „In OK“and also „Overvoltage“ LED will be
lit. Operator have to ensure that drawn power follows values defined by voltage and thermal chart
This operation is allowed only in networks with grounded centre TN-C, TN-S, TN-C-S, TT and DC net-
works TN-C (DC) and TN-S (DC). Voltage of any conductor against ground should not exceed 300V~/=.
Operation in isolated networks.:
Operation in isolated networks is generally allowed when line-line voltage don‘ t exceed 300V~.
Operation in 400/230V isolated network is allowed only with insulation monitoring device which dis-
connects network at first failure.
Operation in 690/400V isolated network is prohibited.
Operation of PWR with 3-phase supply voltage(PWR 3x xx)
At least one line have to be live for operation. Operator have to ensure that drawn power follows values
defined by voltage and thermal chart
Other application have to be consulted with producer.
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