Ac Input Voltage And Grid Currents; Inrush Current; Earth Leakage Current; Recommendations For Circuit Breaker Design - Levitronix BPS-2000.1 User Manual

3.2.2 AC Input Voltage and Grid Currents

The input grid currents depend on the power and the input voltage. As shown in Table 9 maximum input grid
currents are achieved at highest power and lowest voltage.
Phase Type AC Voltage
200 – 240 VAC ±10%
Single Phase
(180 – 264 VAC)
Delta voltage
3 Phase
Star voltage

3.2.3 Inrush Current

Various situations have to be considered for the inrush current. The controller has integrated inrush current
limiters, which limit the current during switch-on of the AC power. However, these limiters are not active if the
controller is not completely discharged Table 9 shows the inrush currents during these situations. It has to be
emphasized that these are absolute worst case currents measured with a rigid mains supply at highest input
voltage. In reality these inrush currents might be much smaller.
Situation
Switch-on after complete discharge of controller (> 60 s).
For this case inrush current limiter in the controller are active.
Switch-on after incomplete discharge (< 60 s, worst case)
For this case inrush current limiter in the controller are not active.
Table 10: Inrush currents for various AC voltage power-off/on situations

3.2.4 Earth Leakage Current

Earth leakage currents have been measured under worst case situation and are

3.2.5 Recommendations for Circuit Breaker Design

The controller contains fuses in all power input lines, which are configured for 20 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 fulfilling above considerations have following basic specifications:
- 16 A and D or K tripping characteristics
PL-4021-00, Rev02, DCO# 15-235
1 200 – 240 VAC ±10%
:
(180 – 264 VAC)
1 115 – 139 VAC ±10%
:
(104 – 153 VAC)
Table 9: Voltage and grid current specifications
1: See Figure 28 for visualization of delta and star voltages.
(Worst case AC input voltage of 240 V +10%)
AC Input Current Performance Mode
13.3 – 11.1 Arms ±10%
Continous speed and pressure with
(14.8 – 10.1 Arms)
maximum active power.
3x 6.7 – 5.6 Arms ±10%
Continous speed and pressure with
(3x 7.5 – 5.1 Arms)
maximum active power.
2
I t Value in [A
29.3
350.8
User Manual for BPS-2000
www.levitronix.com
2
s] Peak Value in [A]
90
1442

5 mA.
17