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HV Split Breakout Module evo for Current
Single-phase measurement of inner conductor current and voltage tap (HV-)
The HV Split Breakout Modules evo (HV SBM_I evo and HV SBML_I evo) have been designed for safe and precise current measurement directly in HV power cables. In addition, the HV SBM_I evo or HV SBML_I evo include a voltage tap (HV-) for voltage measurement with the HV SAM1 evo (HV Split Acquisition Module 1 evo).
Highlights
- Measurement of current and voltage tap of HV- in HV-applications
- Connection of HV SBM_U evo or a suitable sensor cable for voltage tapping of HV+
- Signal transmission to the HV SAM1 evo measurement module via HV-safe sensor cable (permanently connected to the HV SBM_I evo and HV SBML_I evo)
- Measurements in copper and aluminum cables
Description
The exchangeable shunt modules in the HV SBM_I evo measure single-phase currents, whereby the shunt modules have a temperature sensor for automatic temperature compensation. The shunt-based measurement principle thus provides precise measurement results and can be individually adapted by the user to the respective measurement tasks. The measurement directly in the inner conductors and the encapsulated housing ensure precise measurement results, since influences from external fields are minimized: pseudo signals, hysteresis effects, system-related noise, characteristic curve shifts or offset errors do not occur in the measurement results.
The voltage (HV-) is also tapped in the module. The voltage measurement is performed in the HV SAM1 evo in combination with an HV SBM_I evo or HV SBML_I evo or a voltage tap via a suitable sensor cable.
For measurements on HV aluminum cables, the HV SBML_I evo variant is used.
The HV power cables are routed through cable glands into the housing and connected inside via ring terminals. All module variants also have an insulated feed-through for the shield inside the module.
The HV SBM_I evo / HV SBML_I evo has a socket for connecting an HV SBM_U evo / HV SBML_U evo or an HV-safe sensor cable for voltage tapping. With a HV-safe and shielded sensor cable the HV SBM_I evo or HV SBML_I evo is connected to the HV SAM1 evo measurement module using a plug connection.
Technical Data
| HV SBM_I evo and HV SBML_I evo | |
|---|---|
| Inputs | HV- power cable HV BM_U evo: cooper cables HV SBML_U evo: aluminum and/or cooper cables |
| Number of measured phases | 1 |
| Number of cable glands | 1 on each side |
| Outer cable diameter | 9 mm to 25 mm See data sheet |
| Measurement signals | Inner conductor current and potential (HV-) |
| Inner conductor current (Nominal) |
±50 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 | |
| Housing protection class | IP67 |
| Operating temperature range | -40°C to +120°C |
| Pollution degree | 4 |
| Safety conformity | EN 61010-1:2020 |
Applications
With the HV SBM evo, currents can also be measured at measurement points in HV cables where there is no space available for the installation of conventional HV Breakout Modules. The shunt-based measurement (with temperature compensation) provides precise measurement results due to low interference and enables further analysis. With the encapsulated housing, the HV SBM_I evo and HV SBML_I evo also ensure HV safety for users and surrounding components and allow very accurate measurements.
The measurement data obtained from the HV BM-Split evo and the eMobilityAnalyzer from the Vector CSM E-Mobility Measurement System can be used to perform a wide range of real-time analyses: inverter and powertrain efficiency measurement, harmonic, PWM and ripple analysis, and much more.
Further Information
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CSM Xplained: Testing of fuel cell drives on test benches and in road testing
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CSM Xplained: Maintenance of HV measurement technology – calibration and insulation-test
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CSM Xplained: The Vector CSM E-Mobility Measurement System
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CSM Xplained: Voltage measurement in e-mobility
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CSM Xplained: Current measurement in e-mobility
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CSM Xplained: Autonomous power measurement in road tests and on test benches
