Fronius IG 300 Manuel d'utilisateur télécharger pdf (Page 55)

Your FRONIUS IG is connected to the mains network as follows:

- 3 phases (L1, L2, L3)

- Neutral conductor (N)

- Earth (PE)

Make sure that the phases are connected in the correct order, otherwise the overvoltage/

undervoltage relay will not be able to issue an enable signal.

Monitoring the

mains network

Connecting the solar modules and the mains

To enable suitable solar modules to be chosen and to use the FRONIUS IG as efficiently

as possible, it is important to bear the following points in mind:

- If insolation is constant and the temperature is falling, the open-circuit voltage will

increase. Ensure that an open-circuit voltage of 530 V is not exceeded.

If the open-circuit voltage for the solar panels rises above 530 V, this will result in

complete destruction of the FRONIUS IG and all warranty rights shall be declared

null and void.

- More exact values for dimensioning the solar modules at the chosen installation

location can be provided by suitable calculation programs like the FRONIUS confi-

gurator (which can be downloaded from www.fronius.com).

Solar modules

WARNING! To make sure that the mains monitoring system operates as

efficiently as possible, make the resistance in the leads to the connection

point as low as possible.

WARNING! Danger due to mains voltage and DC voltage from solar modules.

The connection area should only ever be opened by an authorised electrical

engineer, and only when the power is disconnected.

For larger photovoltaic systems, several FRONIUS IGs can simply and easily be con-

nected in parallel.

Installations with

several inverters

CAUTION! If the line to the mains is not connected up correctly, this may

result in serious damage. Ensure that the lead to the mains is securely con-

nected.

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Fronius IG 300 Manuel d'utilisateur Page 55