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BEC62(08) technical manual
Current measurement
Current measured is calculated every 15 seconds and is derived from the average power and the
average voltage measured per phase. The derived current measurement is used for the over current
trip evaluation.
Temperature measurement
The average temperature is calculated every 15 seconds from the samples accumulated, and is used
for the over temperature trip evaluations. Temperature is measured on all phases individually,
including neutral.
Nominal voltage measurement
The average voltage per phase is measured every 15 seconds from the samples accumulated. This
value is used for t under and over voltage trip evaluations.
Power overload
Short code:
#007#
If the instantaneous power measured by the meter is higher that the power load limit setting then the
meter will disconnect the consumers supply. The trip limit can be changed through the use of a meter
specific token from a vending unit.
The power load limit is displayed in kilowatts (kW).
Phase unbalance power overload
Short code:
#010#
If the instantaneous power measured between any of the three phases by the meter is higher that the
unbalanced power load limit setting then the meter will disconnect the consumers supply.
The display indicates a maximum phase unbalance limit of
23 kW.
Thermal overload
If the temperature of the busbars on any of the phases, including neutral, measured by the meter rises
above a maximum temperature trip limit (default) of 120
C the meter will disconnect the consumers
supply. The supply will remain disconnected until such time as the temperature has dropped below a
reconnect temperature trip limit of 105
C.
The maximum temperature trip limit is configurable and cannot be set to lower than 55
C. A value of
lower than 55
C will be ignored and a trip limit of 55
C will be set. The maximum temperature trip limit
is not configurable and is used to protect the meter.
