Fronius IG 300 Manuel d'utilisateur télécharger pdf (Page 29)

Module current ... Current that is

being supplied at present by the solar

modules ... (amperes)

The FRONIUS IG always maintains the module voltage within the range that allows the

maximum possible power to be obtained from the solar modules. This results in the

optimum module current.

Overview of

display values

(continued)

Insulation resistance of the photo-

voltaic system (MOhms)

* Module temperature ... Temperature

at the solar modules (°C; can be

changed to °F in the setup menu;

temperature sensor no. 1; sensor card

option)

The insulation resistance is the resistance between the positive or negative poles in the

photovoltaic system and the earth potential. If an insulation resistance > 500 kOhms is

shown, this means that the photovoltaic system is adequately insulated.

* Power taken out of the mains ...

Current consumption (in watts; optio-

nal sensor card)

Example of display for positive potential

(polarity sign „+“):

- Short circuit between DC+ lead and

earth

Example of display for negative potential

(polarity sign „-“)

- Short circuit between DC lead and

earth

WARNING! An insulation resistance of < 500 kOhm may be due to an inade-

quately insulated DC lead or defective solar modules. In the event that the

insulation resistance is too low, it is essential that you consult your FRONIUS

service agent.

Important! Only an insulation resistance of less than 500 kOhms indicates a fault. If the

insulation resistance displayed is greater than this, it can be assumed that there is no

such fault.

In the case of an insulation resistance of less that 10 MOhms, the display differentiates

between the negative potential and earth (polarity sign „-“) and the positive potential and

earth (polarity sign +“).

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Fronius IG 300 Manuel d'utilisateur Page 29