Connection; Safety; General; Connection To The Solar Modules And To The Utility Grid - Fronius IG 2000 Operating Instructions Manual

Connection

Safety

General

Connection to the Solar Modules and to the Utility
Grid
Solar modules When selecting your solar modules to use with the FRONIUS IG unit,
keep in mind this critical point: The open circuit voltage increases when
temperature decreases (assuming constant irradiance). Therefore, at 14
°F (-10 °C) the open-circuit voltage must not exceed 500 V.
- Whenever the open-circuit voltage of the solar modules exceeds 500 V,
- More exact data for sizing the solar array for the particular location can
WARNING! Hazard due to supply voltage and DC-voltage from the
solar modules. Only qualified electrical professionals are authorized
to open the connection area of the FRONIUS IG and only provided
that it is not under voltage.
WARNING! An electric shock can be fatal. Inadequately sized
electrical components can cause serious injuries to persons and
damage to (or loss of) property.
- Electrical installations must be in accordance with the National
Electrical Code, ANSI/NFPA 70.
- For installations in Canada, the installations must be done in
accordance with applicable Canadian standards.
- Use minimum AWG 12 (AC) and AWG 14 (DC), min. 167 °F (75
°C), copper wire for the connection of the FRONIUS IG 2000,
3000 and 2500-LV
- Use minimum AWG 10 (AC) and AWG 14 (DC), min. 167 °F (75
°C), copper wire for the connection of the FRONIUS IG 4000,
5100 and 4500-LV
- Use minimum AWG 10, min. 167 °F (75 °C), copper wire for all
grounding cables.
- Voltage drop and other considerations may dictate larger size
wires be used.
the FRONIUS IG unit may be damaged, and all warranty rights will
become null and void.
be obtained using calculation tools such as the FRONIUS IG System
Configuration Tool (available on www.fronius-usa.com).
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