Updated 2025-12-08
Shutting down a Ferroamp system takes place in the following order:
For instructions on installing EnergyHub, see manual under Downloadable and videos under “Support for installers”. Please note that only trained electricians may install Ferroamp products.
EnergyHub is more than just an inverter. It is the heart of the entire Ferroamp system, providing smart control of batteries and EV chargers as well as Ferroamp’s unique phase balancing.
Another key difference from other hybrid inverters is the scalability. When most hybrid inverters have 1-2 MPPT inputs with the ability to connect a limited number (1-2 solar strings) as well as the ability to connect a battery. To the EnergyHub, solar strings are connected with SSOs and batteries with ESOs. This makes the system scalable. Â If the plant is later to be expanded with, for example, more solar panels in additional directions and/or is to be expanded with another battery, these are only connected to the DC grid and
EneregyHub also provides access to high-resolution measurement of, for example, power consumption and produced solar electricity at string level, as well as data on battery performance that is visualized in numbers and graphs in EnergyCloud
Energyhub is an active component of the property’s network.
The current transformers (CT clamps) are placed on incoming cables. A current transformer is attached to each phase conductor. The current transformers must be located after the electricity company’s electricity meters and main fuses, but before the EnergyHub or any load is connected. That is, they must measure the power that EnergyHub exports or imports to and from the external power grid.
The cables to the current transformers can be extended with a twisted pair cable. A pair is required for each current transformer. Total loop resistance should be kept below 10 ohms.
Note that measurement accuracy may still be affected if long cables run parallel to other live cables. In such cases, a shielded cable can help reduce crosstalk from the adjacent cables.
The green marking shows where current transformers should be placed.
CT configuration (CT = Current Transformer = Current Transformer) must be performed via the display on the EnergyHub in connection with installation. If CT configuration fails, it could be due to one of the following:
The house will not be without power if the EnergyHub breaks down. This will only mean that:
The house still receives electricity via its electricity grid connection to the public electricity grid.
When starting up EnergyHub, a self-test is carried out to ensure that all functions work properly with the text “Please wait, loading system settings”.
If your EnergyHub does not progress from this mode, follow the steps below:
Wait 10 min.
EnergyHub needs to be connected to the internet to:
It depends on where in the property EnergyHub’s phase balancing function is to be used. For the inverter function, the location is less important, only the fuses and cabling can handle the current. The phase balancing function can balance out the power taken both from a main distribution board (towards the public electricity grid) or in a substation (where electric cars are located, for example). In general, phase balancing always takes place against the part of the house’s electrical installation to which the current transformers are connected.
Example 1:
The most common is that the EnergyHub and current transformers are connected to the property’s main switchboard. Then EnergyHub will phase balance against incoming from the electricity grid in the house and make sure that the main fuses do not blow.
Example 2:
Here, EnergyHub will balance out the power outlets at a substation to protect a cable between the substation and the main switchboard, for example. In this case, EnergyHub will phase balance against the main control panel and ensure that fuses in the main control panel against the sub-central do not blow. It is important to keep in mind that the zero conductor between the EnergyHub and the substation must be able to handle 1.7 times the current of maximum phase balancing.
Example 3
In case of lack of space or other necessity, you can place the EnergyHub in a substation with current transformers at the main control panel. Then phase balancing will take place against the incoming to the property, but all power will be fed into the substation. Then the zero conductor must be able to handle 1.7 times the current all the way from the EnergyHub to the main switchboard.
EnergyHub can be installed together with existing inverters in a system or to replace the existing inverter.
To consider if EnergyHub will work together with existing inverters:
To consider if EnergyHub replaces existing inverters:
Yes, it is possible to fuse an EnergyHub with type C fuse. In general, Ferroamp recommends fusing with B-characteristic fuse. This is because it has a faster tripping time than C-fuses, and it is advantageous for an inverter in general.
But if the rest of the property’s electrical system has been fused with C-fuses and it is easiest to get access to C-fuses, there is nothing technical to prevent EnergyHub from being fused with it. The electrician who does the installation is the one who ultimately chooses whether to use a type B or type C fuse depending on what is suitable for the electrical system in the property.
RCDs are normally not capable of interrupting direct current, which is why they cannot be used in DC networks. For this reason, all installation must be carried out as a fixed installation and touchable parts must be earthed or separated by double or reinforced insulation.
However, an EnergyHub installation can be equipped with an earth fault circuit breaker type B, 300 mA on the AC side for fire protection in cases where this is prescribed. This assumes that there is no equipment on the DC side that can give rise to leakage currents that can cause incorrect tripping, for example.
In cases where several EnergyHubs are connected on the DC side of a PowerShare installation, RCDs cannot normally be used because equipotential bonding currents naturally occur via the different EnergyHubs, which can cause incorrect tripping of the RCDs.
However, the greater the coverage of the DC network and the more devices that are connected on the DC side, the greater the risk that the RCD will trip incorrectly due to normal leakage currents and transients.
RCDs type B, 30 mA can be mounted on the AC side of the EnergyHub wall, but increase the risk of incorrect tripping in connection with, for example, thunderstorms or transients on the external power grid.
For personal protection, each SSO contains a DC-sensitive residual current circuit breaker in accordance with EN 62109-2 that disconnects the panels from the DC grid in the event of fault currents above 30 mA.
Residual current circuit breakers type A are not recommended in combination with EnergyHub and DC grids as these are not guaranteed to trip in the event of an earth fault on the DC side.
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