Chapter 1
Purpose of the Product
Page 4 of 20
Product Description ENS31
Version: A.02
Issue: 20.09.2005
1
Purpose of the Product
The automatic, three-phase isolation unit is an automatic switching unit
used to connect decentralised power generators safely to the public elec-
tricity supply.
The ENS31 isolation unit has been conceived as an independent unit for
monitoring 3-phase power feeding systems. It prevents uncontrolled island
effects following failure or shutdown of the public electricity supply.
The ENS31 complies with DIN VDE 0126-1-1 and is approved as a sub-
stitute for manual isolation devices up to a 30 kW feeding power.
By implementing this automatic isolation unit, it is possible to dispense
with a manual isolation unit which must be accessible to the public elec-
tricity supply authorities at all times.
The feeding systems can be:
•
photovoltaic systems,
•
small hydroelectric power stations,
•
block-type thermal power stations,
•
fuel cells,
•
small wind energy plants.
