Fronius String Control 250/25 DCD DF - Manual (Page 85)

27
EN-US
The Fronius String Control 250/25 has a shutdown function that interrupts
the energy supply in the Solar Net:
-
in the event of over-current, e.g., in case of a short circuit
- in the event of under-voltage
The over-current and under-voltage shutdown function does not depend
on the direction of the current flow.
If the String Control 250/25 measures a current flow > 3 A or a voltage < 7
V while supplying Solar Net components, the energy supply in the Solar
Net is interrupted.
The energy supply can be restored automatically or manually.
Jumper positions:
A Automatic restoration of the
energy supply
(factory setting)
M Manual restoration of the ener-
gy supply
The jumper (1) must be set to position A for automatic restoration of the
energy supply.
WARNING! An electrical shock can be fatal. Danger from DC
voltage from solar modules.
-
Make sure that the input and output sides in front of the
device are not charged before making any connections or
settings.
- Any and all connections and settings should only be carried
out by qualified electricians.
- Follow the safety rules in these operating instructions.
Over-current and under-voltage shutdown
General
Functional
principle
Safety
Restoring the
energy supply
automatically
(1) (2)