Isabellenhütte IVT-S series

  • Isabellenhütte

Product Features

  • Current & voltage measurement sensor
  • Current range up to ±2,500A
  • Voltage range up to ±1,200V
  • Communication based on CANbus 2.0
  • Accuracy of ±0.4% of reading
  • Temperature range from -40°C to +105°C


The IVT-S current and voltage measurement sensor is an intelligent shunt-based plug-and-play measurement system. The module continuously measures current and is available in either 100A, 300A, 500A, 1000A or 2500A. The IVT-S modules offer guaranteed galvanic isolation up to 1000V making them suitable for high-voltage applications. There is also a temperature sensor within the module utilised for temperature calibration, ensuring optimised results across the whole temperature range.

The shunt-based measurement method uses a 16-bit analog-digital-converter (ADC) at a speed of up to 1kHz to transform the voltage drop into a digital signal. The communication is based on a CANbus 2.0a interface. A CAN description file (CAN-dbc) is available and supports fast system integration.

The ITV-S is offered as a modular system, with the options for 3 voltage monitoring channels and an additional CAN port to enable daisy-chaining.

Key features of the IVT-S Current & Voltage Measurement Sensor include:

  • Intelligent shunt-based current and voltage measurement sensor
  • 5 nominal current options: 100A, 300A, 500A, 1000A or 2500A
  • Optional 3-channel voltage measurement channels and extra CAN port
  • Optional extra CAN port for daisy-chain capabilities
  • Communication via CANbus 2.0a interface
  • Temperature range of -40°C to +105°C
  • Accuracy of ±0.4% of reading for current measurement
  • Accuracy of ±0.5% of reading for voltage measurement
  • Dielectric strength of 1000V

Standard Module outputs

  • Current
  • Temperature (at shunt)
  • Current counter (As)

Additional outputs available with voltage measurement:

  • 3x voltage
  • Power
  • Energy counter (Wh)

Typical applications for the IVT-S current and voltage measurement module series include:

  • Hybrid and full electric drives
  • UPS systems
  • Stationary energy storage systems
  • Fuel cells
  • All battery and storage based applications

Isabellenhütte IVT-S Series Operating Specification Table

Operating temperature-40°C to +105°C
Storage temperature-40°C to +125°C
Storage humidity≤95%
Supply voltage (Vcc)5.5V to 40V (12V typical)
Supply voltage-42V to 42V
Current consumption≤80mA (30mA typical)
Re-/ Startup time≤400ms (350ms typical)
Waiting time power on/off>2ms

Isabellenhütte IVT-S Series Current Measurement Table

Nominal measurement range
(depending on shunt)
Extended load (5 min)±120A±320A±730A±1100A±2700A
Extended load (30s)±200A±430A±860A±1400A±3200A
Extended load (10s)±300A±600A±1000A±2000A±4300A
Extended load (1s)±900A±1600A±2700A±5500A±11300A
Extended load (200ms)±2000A±3600A±6000A±12000A±24000A
Power loss<3W<9W<9W<20W<32W
Initial accuracy *±0.1%rdg**±0.1%rdg**±0.1%rdg**±0.1%rdg**±0.1%rdg**
Total accuracy *±0.4%rdg**±0.4%rdg**±0.4%rdg**±0.4%rdg**±0.4%rdg**
Linearity0.01% of range0.01% of range0.01% of range0.01% of range0.01% of range
Noise5mA (RMS)15mA (RMS)40mA (RMS)70mA (RMS)280mA (RMS)
Overcurrent measurement range±800±2500±6900±12200±48000
Accuracy (Overcurrent range)±3%rdg±3%rdg±3%rdg±3%rdg±3%rdg
Offset (Overcurrent range)60mA200mA540mA940mA3720mA
Linearity (Overcurrent range)0.1% of range0.1% of range0.1% of range0.1% of range0.1% of range
Noise (Overcurrent range)40mA (RMS)120mA (RMS)320mA (RMS)560mA (RMS)2240mA (RMS)
Resolution (Overcurrent range)24mA80mA216mA376mA1488mA

Isabellenhütte IVT-S Series Voltage Measurement Table

Nominal measurement range±1000V
Extended range (nonlinear)±1200V
Initial accuracy0.1% of reading
Total accuracy0.5% of reading
Linearity0.01% of range
Noise ***30mV (RMS)

* In nominal measurement range
** Failure of reading
*** Without averaging

Isabellenhütte has been one of the world’s leading providers of ultra-modern measurement technology systems for years as a proven specialist in the precise measurement of high currents. We offer our customers precision measurement systems with exceptional performance data under the brand name ISAscale®. Please visit for more information on ISAscale® or contact one of our technical engineers today.