HVT 400-DX
The HVT 400-DX is a SIL2-compliant voltage monitoring transmitter designed for safe and reliable monitoring of high-voltage systems. It enables automatic triggering of safety measures based on configurable voltage thresholds, making it ideal for controlling access to test beds, simulating high-voltage powertrain components, and ensuring safe operation of electrification systems across automotive and industrial applications.
Measure. Monitor. Repeat.
For better insights, better decision-making and better process performance.
Key Features & Benefits
- Failsafe voltage monitoring
- Simple software configuration via USB or Modbus
- 0-1500V AC/DC measurement range
- Redundant architecture
- Robust design with high dielectric strength
- SIL2 according to IEC/EN 61508
- Two individual safety outputs
- LED status: Power, Error, Alarm
- 10-year proof test interval

Typical Applications
- Controlling access to automotive test beds
- Simulation of high-voltage powertrain components
- Triggering safety measures based on voltage thresholds
- Use in electrification components across various industries
Safety Features
Featuring a safety-by-design approach, the HVT 400-DX provides a wide range of diagnostic functions. In order to create a safety loop, the desired output must be evaluated in conjunction with one of the two diagnostic relays REL3/REL4. This way, two individually configurable safety outputs can be created, for which either the relays REL1/REL2 or the 4…20mA analog output are available.
More info
Scope of use
- Battery
- Battery Management System
- Motor
- Inverter
- Climate Aggregate
- Charger
- Compressor
- HV-Supply
| Parameter | Specification |
|---|---|
| Certificate | SIL 2 according to IEC 61508 |
| Measurement range | 0–1500 V AC/DC |
| Overrange | 1800 V (permanent) |
| Input resistance | 12 MΩ |
| Analog Output | 0–22 mA / 22–0 mA |
| Analog Load | Max. 500 Ω at 22 mA |
| Accuracy | < 0.005% |
| Contact outputs | Switching Power: Max. 62.5 VA / Max. 30 W Switching Voltage: Max. 125 VAC / 110 VDC Switching Current: Max. 1 A Contact Material: Ag Pd + 10 µAu Normally Open |
| Status LEDs | Power: Green Error / SIL Alarm: Red REL1 / REL2: Yellow |
| USB Interface | Front socket USB 2.0 |
| RS485 Interface | Baud rate: 9600 bps, Device Address: 1–248, Half duplex, no scheduling |
| Supply | 24 VDC (20–30 VDC) |
| Power Consumption | Max. 1.9 W |
| Temperature | Operating: -10°C…+60°C, Storage/Transport: -20°C…+70°C |
| Permissible Humidity | 10%…90% r.H, no condensation |
| Max. Operating Altitude | < 2000 m above mean sea level |
| Temperature Coefficient | Max: <0.01%/K, Typical: <0.005%/K |
| Galvanic isolation / Overvoltage category | 4.3 kV AC test voltage, CAT II: 1500 V, Pollution Level 1 |
| PCB Material | FR4 |
| Housing Material | Polyamide |
| Protection Class | IP20 |
| Flammability | UL94 V0 |
| Mounting type | 35 mm DIN rail |
Why Choose Process Networks?

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Exclusive access to premium instrumentation from leading global manufacturers in Germany, Japan, the US and across Europe.

Long-Term Support & SLAs
Most customers stay with us for years because we stay with them providing ongoing maintenance, calibration and on-site service.

Proven Field Experience
Thousands of instruments installed and tens of thousands points monitored daily on systems we support.









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