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KraftPowercon Sweden AB, Hjalmar Petris väg 49, S-352 46 Växjö, Sweden, Tel: +46 470-705200, Fax: +46 470-705201,
www.kraftpowercon.com
Fault causes:
1) Measurement input for battery voltage incorrectly connected.
2) Control fuse in battery distribution unit tripped.
3) The monitoring unit's measurement input for battery voltage defective.
Other:
During the time the alarm condition is met, the common control of the output
voltage ceases, i.e. each rectifier unit is individually controlled.
HIGH CURRENT, I>
Function:
Warns that the output current is approaching the maximum capacity of the
rectifier.
Alarm condition: The output current exceeds 90 % of the set current limit.
Interlocking: -
Other:
As this is not regarded as an actual alarm but more as information, the LED on
the panel will not light in connection with this alarm. However, the output
relays can be activated as normal.
OVERLOAD
Function:
Warns that the rectifier is overloaded.
Alarm condition: The condition for the alarm “High current, I>” has been met for the whole of
the set delay period, which normally is to be long (typically 24 hours).
Interlocking: -
Fault causes:
1) Not enough time to recharge the battery following discharge over the set
delay time. This alludes to the rectifier being under dimensioned.
2) A gradual expansion of the load has ultimately created a power
requirement that exceeds the original dimensioning of the rectifier.
3) Temporary overload due to fault in the installation.
Other:
The alarm is completely invisible over the delay period. The actual minimum
delay period is 1 minute, although you can set a shorter period.
HIGH TEMP, BATTERY
Function:
Monitors the ambient temperature of the battery.
Alarm condition: The battery's ambient temperature exceeds the set limit value.
Interlocking:
Temperature measurement can be deselected, see section
5.13.4.
Other:
For alarms any ongoing equalizing charging is interrupted. If the temperature
e49 °C, the sensor is considered to be defective. Indicated by “Internal
fault” alarm.
LOW TEMP, BATTERY
Function:
Monitors the ambient temperature of the battery.
Alarm condition: The battery's ambient temperature drops below the set limit value.
Interlocking:
Temperature measurement can be deselected, see section
5.13.4.
Other:
If the temperature falls below -19 °C, the sensor is considered to be defective.
Indicated by “Internal fault” alarm.
EARTHFAULT TO +
Function:
Monitors earth fault resistance.
Alarm condition: Earth fault resistance to positive falls below the set limit value.
Interlocking:
Digital input for blocking of earth fault measurement
E.F. Blocked
, is open
(does not apply in system B).
Other:
The limit value can be set in the range 10 kΩ to 2.5 MΩ.
EARTHFAULT TO -
Function:
Monitors earth fault resistance.
Alarm condition: Earth fault resistance to negative falls below the set limit value.
Interlocking:
Digital input for blocking of earth fault measurement
E.F. Blocked
, is open
(does not apply in system B).
Other:
The limit value can be set in the range 10 kΩ to 2.5 MΩ.
