PowerRouter • Solar Inverter • Installation manual 3 General description
17
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3.3 3-phase sensor (accessory PRA3SENSE)
With the signal from the 3-phase sensor, the PowerRouter determines the energy consumption from the
public grid for a 3-phase system, and compensates on 1-phase if a compensating electric meter is used.
With the 3-phase sensor the consumption of self generated solar energy is maximized. The 3-phase
sensor can be ordered via your local Business Partner.
3.4 External relay (accessory PRA1RLY)
You can use the external relay to:
• Setup a backup power supply (figure 8).
If the public grid fails, the external relay is energised. The switch over to the local AC grid is done via
one of the user-selectable relays (K201 / K202) of the PowerRouter. The backup capacity is limited, it
depends on the amount of energy produced by the solar panels.
• Energy management (figure 9).
If the amount of solar energy fed to the public grid exceeds the programmed value, the PowerRouter
can switch on additional loads via the external relay. How long the load stays switched on can be
programmed in the PowerRouter, via advanced settings in the software installation tool.
• Isolate the PowerRouter from the public grid by a ripple control receiver (figure 12).
The ripple control receiver is not included. The disconnection is according to the German directive
EEG2012. Only the disconnect contacts of the relay are used.
The external relay can be ordered via your local Business Partner.
3.5 Wireless Energy Management Kit (accessory PRA1WEMK)
The Wireless Energy Management Kit can be used with PowerRouter products that support energy
management. If the amount of solar energy fed to the public grid exceeds the programmed value, the
PowerRouter can switch on additional loads via the Wireless Energy Management Kit. The Wireless
Energy Management Kit is available in several country dependend versions and can be ordered via your
local Business Partner.
• Binary input module (Eaton CBEU-02/xx).
• Wireless plug-in actuator (Eaton CSAP-01/xx).
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