Growatt SPF 3000-6000T HVM handleiding
Handleiding
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（4）If power will be fed back into the grid an anti-islanding device may have to be added to the system, depending on
local regulations.
2.frequency shifting
Frequency shifting is used to regulate the output power of a Grid-tie PV Inverter, or Grid-tie Wind inverter, by changing
the frequency of the AC
3. The Factor 1.0 rule
The max PV power must be equal or less than the VA rating of the inverter/charger
3.1 Rule definition
In both grid-connected and off-grid systems with PV inverters installed on the output of SPF 3000T HVM-G2 (SPF 6000T
HVM-G2), there is a maximum of PV power that can be installed. This limit is called the factor 1.0 rule: 3.000 VA SPF
3000T HVM-G2 >= 3.000 Wp (6.000 VA SPF 6000T HVM-G2 >= 6.000 Wp )installed solar power.
3.2 Example and background
To understand the background, consider the following situation: the PV inverter is at full power, supplying a big load.
The SPF 3000T HVM-G2 (SPF 6000T HVM-G2) is in inverter mode. Then, suddenly and at once, this load is switched off.
At that moment the PV inverter will continue operating at full power until the AC frequency has been increased.
Increasing this frequency will take a very short time, but during that time all power will be directed into the batteries as
there is no other place for it to go. This causes the following:
（1）When batteries are (nearly) full, the battery voltage will spike, possibly causing the SPF 3000T HVM-G2 (SPF
6000T HVM-G2) to switch off in DC over-voltage alarm.
（2）The same spike will cause the AC output voltage of the SPF 3000T HVM-G2 (SPF 6000T HVM-G2) to spike, as
these two are directly related, and when the spike on the battery voltage is high and fast enough, the SPF 6000T HVM-
G2 can never regulate its PWMs down fast enough to prevent the spike on AC. This spike can damage the PV inverter,
the SPF 3000T HVM-G2 (SPF 6000T HVM-G2) and also any connected loads and other equipment.
（3）Another problem is that the SPF 3000T HVM-G2 (SPF 6000T HVM-G2) starts charge current protection.
（4）In the best case it might switch the grid inverter off immediately by setting the AC frequency to the disconnect
frequency as configured in the assistant.
4.Minimum battery capacity
The minimum battery capacity depends on the type of battery, lead or lithium.
Note that, besides the minimum battery capacity, the mentioned sizes are often also the most economical battery size.
In case used for self-consumption purposes that is. In case the goal is to increase autonomy, of course installing a large
battery increases the system autonomy in case of a grid failure.
4.1 Lead batteries
1 kWp installed PV power requires approximately 5kWh of lead acid battery:
Each additional 1 kWp of AC PV will require an additional proportional 5 kWh increase in lead acid battery storage.
4.2 Lithium batteries
1,5 kWp installed AC PV power requires 4.8 kWh of battery storage:
Each additional 1.5 kWp of AC PV will require an additional proportional 4.8 kWh increase in battery storage.
Inverter mode+AC bypass mode jointly output
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Productinformatie
| Merk | Growatt |
| Model | SPF 3000-6000T HVM |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 6722 MB |
