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HV Split Breakout Module Current/Voltage HV Split-Breakout-Modul I/U

HV Split Breakout Module Current and Voltage

Single-phase measurement of inner conductor current and voltage in HV power cables with small cable diameters

The HV Split Breakout Modules (HV SBM_I/U 10 A / 50 A) have been designed for safe and precise current and voltage measurement. They measure directly in HV+ and HV- power cables that run between tightly installed components and have a small inner conductor diameter of up to 6 mm2.


  • Measurement of small currents and voltages tap (HV-) in HV applications
    • Currents up to ±50 A (rated ), ±100 A (peak)
    • Voltage tap HV+ and HV- for voltage measurement in HV SAM
  • Data transmission to HV SAM measurement module (HV Split Acquisition Module) via two HV-safe sensor cables (permanently installed in the HV SBM)
(Outgoing sensor cables not shown)


The HV Split Breakout SBM_I/U measure single-phase currents via a shunt module that includes the measurement shunt, the temperature sensor for automatic temperature compensation and the sensor electronics. The measurement directly in the inner conductors and the encapsulated housing ensure precise measurement results.

The voltage (HV+ and HV-) is also tapped in the module. The voltage measurement takes place in the HV SAM (HV split acquisition module).

The HV cables are fed into the housing through cable glands and connected inside via Phoenix terminals.

The HV SBM_I//U is connected to the HV SAM measurement module via a plug-in connection using two HV-safe and shielded sensor cables which are permanently installed in the sensor module.

Technical Data

Inputs HV- power cable for HV+ and HV-
Number of measured phases 1
Connection of HV- power cable Phoenix terminals
(via cable glands)
Number of cable glands 1
on each side
Outer cable diameter 4 mm to 14 mm
See data sheet.
Measurement signals Inner conductor current and potential (HV+ / HV-)
Inner conductor current
±10 to ±50 A
Four configurable measurement ranges, depending on shunt module used. See data sheet.
Measurement categories
CAT 0 1,000 V
CAT II 600 V
Operating conditions
Housing protection class IP67
Operating temperature range -40°C to +120°C
Pollution degree 4
Safety conformity EN 61010-1:2020
HV SBM_I/U side view
HV SBM_I/U side view
HV SBM_I/U top view
HV SBM_I/U top view


The HV SBM_I/U can be used to reliably measure small currents and voltages at e.g. auxiliary consumers in the HV environment.

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.

In-vehicle measurement with HV SBM_I/U
In-vehicle measurement with HV SBM_I/U


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  • Configuration software for CSM measurement modules (incl. documentation)
  • with visualization software CSMview
  • System requirements: