As solar farms and energy storage systems grow in scale, they increasingly require power relays that can safely cut off high DC voltages. That’s where Panasonic’s HE-V relay comes in.
Designed specifically for alternative energy applications, this new 2 Form A power relay provides:
Outstanding capacity: A nominal voltage of 800 VDC and maximum switching capacity of 1000 VDC, 20 A has been achieved at each of the HE-V relay’s 1 Form A contacts. These contacts are connected in series to allow the simultaneous cutoff of DC positive and negative terminals.
Reduced energy requirements: HE-V relay contributes to energy saving in devices thanks to a coil hold voltage that is just 33% of the nominal coil voltage. Nominal operating power is also low at 210mW.
HE-V Applications
The HE-V relay can be used in a variety of DC power applications—including photovoltaic power generation, energy storage, inverter control and DC load control.
In solar applications, one or more HE-V relays can disconnect individual solar panels or strings of panels. Reasons for cutting of panels include maintenance, emergency response and bypassing panels with efficiency problems.
In energy storage applications, HE-V can protect against high inrush currents during the charging of capacitors or storage batteries.
HE-V specifications are available here
Contributed By: Mamitha Mathew, Product Engineer at Panasonic Electric Works of America
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