HVT 300-DV
The HVT 300-DV is a SIL2 shunt current transmitter to measure very high currents over a shunt resistor. This requires a measuring range of 0-60/70 mV. The device is mostly used in hydrogen applications, e.g. to monitor high power and polarisation rectifiers and power supplies to enable a safe operation of the electrolyser processes. With the configurable safe limit values, the HVT 300-DV offers a versatile device for maximum safety
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Key Features & Benefits
- Failsafe voltage monitoring
- Simple software configuration via USB or Modbus RTU- 0-70 mV 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
- Monitoring and controlling current and voltage in electrolysis plants
- Production of green hydrogen using renewable energy sources
- Integration of hydrogen production into renewable energy projects
- Safe operation of electrolysis systems across various industries
- Industrial applications involving sustainable energy and hydrogen generation
Scope of use
- Chlorine Alkaline Electrolysis
- PEM Electrolysis
- High Power Rectifiers
- Power Rails
More info
Safety Features
Featuring a safety-by-design approach, the HVT 300-DV 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…20 mA analog output are available.
| Parameter | Specification |
|---|---|
| Certificate | SIL 2 according to IEC 61508 |
| Measurement range | 0–70 mV DC |
| Input resistance | 10 kΩ each channel |
| Analog output | 0/4–20 mA |
| Load | Max. 500 Ω at 22 mA |
| Accuracy | < 0.5% |
| Contact outputs | Normally Open Switching Power: Max. 37.5 VA / Max. 30 W Switching Voltage: Max. 125 VAC / 30 VDC Switching Current: Max. 0.3 A AC / 1 A DC Contact Material: Ag Pd + 10 µAu |
| Status LEDs | Power: Green Error / SIL Alarm: Red REL1 / REL2: Yellow |
| USB Interface | USB 2.0 |
| RS485 Interface | Half duplex, no scheduling, Baud rate 9600 bps, Device Address 1–248 |
| 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%–95% 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 | 4.3 kV AC test voltage |
| Overvoltage category | CAT II: 1000 V, Pollution Degree 2 |
| PCB material | FR4 |
| Housing material | Polyamide |
| Protection class | IP20 |
| Flammability | UL94 V0 |
| Mounting type | 35 mm DIN rail |
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