Switch-on after in-complete discharge (< 60 s, worst case)
For this case inrush current limiter in the controller are not active.
Table 9: Inrush currents for various AC voltage power-off/on situations
(Worst case AC input voltage of 240 V +10%)
3.2.4 Earth Leakage Current
Earth leakage currents have been measured under worst case situation and are < 10 mA.
3.2.5 Recommendations for Circuit Breaker Design
The controller contains fuses in all power input lines, which are configured for 30 A (time lag T). For the
selection of external breakers above considerations about AC voltage, grid currents, inrush current and earth
leakage current have to be considered. It is recommended to test the reliability and sensitivity of the selected
breakers with the pump system in the context of the tool, where it is operated.
Circuit breaker types full-filling above considerations have following basic specifications:
- 25 A and D or K tripping characteristics
3.3 Temperature Monitoring
To avoid overheating of the system, the controller and motor temperatures are monitored. If the controller
temperature exceeds 70 °C (158 °F) or the motor temperature 90 °C (194 °F) for duration of more than 10
minutes, the system goes into an error state and the pump stops. At 80 °C (176 °F) controller temperature or
100 °C (212 °F) motor temperature, the system stops immediately.
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