HVD 450

The HVD 450 is a unique, wear-free switching and management system for discharging high voltage DC links. Discharging is done through a discharge resistor provided by the customer.

Instead of using mechanical contactors to switch the discharging process, the HVD 450 comes with a unique high voltage transistor which works wear-free. This gives the device a long service life and eliminates the need to regularly replace expensive high-voltage contactors. In addition, the HVD 450 enables intelligent monitoring of the discharging process and stops it in the event of faults

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Measures: Voltage

Industries: Animal Feed, Chemical, Hydrogen, Manufacturing, Paper, Pharma, Wood

Datasheet

Measure. Monitor. Repeat.

For better insights, better decision-making and better process performance.

Key Benefits & Features

SiC-based solid state contactor
Wear-free switching of high voltage DC links
Fast discharge times due to high current (8A per device, multiple devices in parallel are possible to multiply the current)
Integrated current and voltage monitoring
Robust and intelligent replacement for discharging contactors
Status outputs and signalling of potential hazards

HVD 450

Typical Applications

Discharge of DC links up to 1500 V
Energy storage discharge systems in high-voltage applications
Replacement of mechanical contactors in discharge circuits
Real-time monitoring of voltage and current during discharge
High-voltage systems requiring wear-free, reliable discharge control
Industrial and energy applications using PLC-controlled discharge systems

Product Description
Technical Data

As industries shift to higher voltages of up to 1500V in DC links, efficient energy storage and discharge systems are crucial. Traditionally, mechanical contactors were used but faced wear and tear when switched under load.

The HVD 450 eliminates this issue by seamlessly switching discharge circuits without wear down, ensuring long-lasting performance. It integrates precise current and voltage monitoring for realtime surveillance of the discharge process. Control is simple and efficient with a standard 5-24V signal from a PLC.

The device provides comprehensive feedback on the discharge process, including potential errors or hazards. Experience the future of discharge technology with the HVD 450.

Section	Terminal	Description	Specification
Load Output	T-21/22 (+) T-25/26 (−)	DC link discharge output	Max. DC link voltage (Uc): ≤ 1500 V Max. discharge current (Ic): ≤ 8 A Limit current alarm (Ig): ≥ 9.6 A Residual voltage: < 10 V Discharge time constant (τ): 100 ms … 10 s
DC Link Input	T-17/18 (+) T-25/26 (−)	DC link voltage measurement	Measurement range: 0 … 1500 VDC
Discharge Status Output	T-5 (+) T-6 (−)	Discharge status signal	Signal: ON = LOW (~3 V) Open collector output Output rating: 5 … 30 VDC, I ≤ 50 mA
Error Status Output	T-7 (+) T-8 (−)	Error indication signal	Signal: ON = LOW (~3 V) Open collector output Output rating: 5 … 30 VDC, I ≤ 50 mA
Start Signal Input	T-9 (+) T-10 (−)	Discharge start command	Start signal level: 5 … 30 VDC (High level)
Power Supply	T-3 (+) T-4 (−)	Auxiliary power supply	Supply voltage: 24 VDC (18 … 30 VDC) Power consumption: max. 1 W
Protective Earth	T-1 / T-2	PE / grounding	Additional grounding via ME-MAX board contact when mounted on grounded DIN rail
LED Indicators	Front LEDs	Device status indication	Green LED: Power / supply on Red LED: Error / failure Yellow LED: Discharge active