Fronius Symo Dummy; Explanation Of Footnotes; Rcmu - Fronius Symo Serie Instructions De Service

Fronius Symo
Input Data
Dummy
Nominal grid voltage
Mains voltage tolerance
Nominal frequency
General Data
Protection class
Dimensions h x w x d
Weight
Explanation of 1)
footnotes
2)
3)
4)
5)
6)
Relevant stan- Circuit for Preventing Stand Alone Operation
dards and direc- The inverter has a permissible circuit for preventing stand alone operation.
tives
Grid Failure
The standard measurement and safety procedures integrated into the inverter ensure that
the power feed is immediately interrupted in the event of a grid failure (shut-off by the utility
or damage to lines).

RCMU

RCMU = Residual Current Monitoring Unit
The inverter is equipped with an RCMU according to Austrian standard ÖVE/ÖNORM E
8001-4-712.
It monitors residual currents from the solar module to the inverter grid connection and dis-
connects the inverter from the grid when an improper residual current is detected.
Additional residual current protection may be needed depending on the installation's pro-
tection system or the requirements of the utility company. In this case, use a type B residual
current circuit breaker with a release current of at least 100 mA.
The values provided are standard values. If required, the inverter can be custom-
ized for a specific country.
Depending on the country setup or device-specific settings
(ind. = inductive; cap. = capacitive)
PCC = interface to the public grid
Maximum current from inverter to solar module when inverter is experiencing an
error
Assured by electrical design of the inverter
Peak current when turning on the inverter
1 ~ NPE 120 V
1)
+10 / -12%
1)
50–60 Hz
NEMA 4X
28.5 x 20.1 x 8.9 in.
725 x 510 x 225 mm
48.5 lbs. (22 kg)
71