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The PowerClamp is a device for limiting the maximum output voltage of a PowerSpout hydro turbine, so as to protect sensitive equipment such as charge controllers or grid-tied inverters (GTIs) that are connected to it. It is an external device, wired to the output of the turbine. It uses PWM diversion of current to a heating load as a means to limit the voltage that is passed on. For added security it incorporates an independent fail-safe crowbar that safely short-circuits the turbine's entire output current if the voltage climbs too high.
The primary purpose of the PowerClamp is to allow PowerSpout turbines to operate at a more appropriate (higher) voltage when connected to common MPPT and GTI equipment. Open circuit condition is prevented by the PowerClamp's diversion load, so there is no danger of damage.
|Turbine Design Voltage
|Minimum Dump Voltage
|Initial Dump Voltage
|Maximum Dump Voltage
|250V (No Crowbar)
We are in the process of updating the user manual to reflect the recent changes to this product.
This PowerClamp has some new features:
This PowerClamp needs to be installed in an enclosure out of the weather.
The air resistor(s) which comes with the PowerClamp will need to be mounted in such a way which:
Please read the detailed specifications and installation guide prior to purchase with your PowerSpout hydro turbine.
We have a un-edited video that shows how a PC2 can be used. We hope this helps.
Please read our higher voltage applications quide for more detailed information on this topic.