Encapsulated HV Split Breakout Module Current 
The HV Split Breakout Module open (HV SBM_I open) is particularly suitable for current measurements in very confined installation spaces, e.g. on busbars. In addition, the potential HV- is tapped, which allows the voltage measurement to be performed in the HV Split Acquisition Module (HV SAM).
The encapsulated shunt modules in the form of the HV SBM_I open contain the measurement shunt, the temperature sensor for automatic temperature compensation and the measuring electronics. With these active shunt modules, the influences of external fields are minimized.
The voltage (HV-) is also tapped in the module. The voltage measurement takes place in the HV SAM (HV Split Acquisition Module) in combination with a voltage tap via a suitable sensor cable.
The HV cables are screwed to the M8 bores of the shunt module using ring terminals. The HV SBM_I open can be used directly in busbars. The direct measurement in the busbar reduces the necessary space for the installation.
The HV SBM_I open is connected to the HV SAM measurement module via a plug-in connection using an HV-safe and shielded sensor cable that is permanently installed in the HV SBM_I open.
| HV SBM_I open | ||
|---|---|---|
| Imputs | HV power cable or busbars for HV- | |
| Number of measured phases | 1 | |
| Connection of HV- power | Connection via M8 bores (using ring terminals) | |
| Measurement signals | Current and potential (HV-) | |
| Current (Nominal) | ±125 to ±1,000 A Four configurable measurement ranges, depending on shunt module used. See data sheet. | |
| Measurement categories | ||
| CAT 0 | 1,000 V | |
| CAT II | 600 V | |
| CAT III | 300 V | |
| Operating conditions | ||
| Operating temperature range | -40°C to +120°C | |
| Safety conformity | EN 61010-1:2020 | |
The HV SBM_I open allow precise current measurements in cables that run in narrow installation spaces and offer little space for the installation of the measurement technology. Furthermore, currents can also be measured directly in the busbars, e.g. of HV batteries. The shunt-based measurement (with temperature compensation) provides precise measurement results for further analysis due to the very low interference.
With the measurement data obtained from the HV BM Split Modules and the eMobilityAnalyzer from the Vector CSM E-Mobility Measurement System a variety of analyses in real time can be performed: Inverter and powertrain efficiency calculations, e-motor power analysis, harmonic analysis, PWM analysis, ripple analysis and many more.
