Electric Power Systems (Ac); Number Of Phases; Earthing Or Grounding System - Ingeteam INGECON SUN STORAGE 1Play Technical Manual

2.2 Electric Power Systems (AC)

2.2.1 Number of Phases

Single phase electric power system: power system used for distribution of energy where there are a line
and a neutral (in some systems earth acts as the neutral). The line carries the current which varies its
amplitude in a 50/60 Hz frequency, feeds the load and finally returns to the source by the neutral. The
available values for the ISS 1Play are between 200 and 250 Volts, they should fit to the grid depending on
each country's standard too.
A simple single phase system is included in the figure below:
Three phase electric power system: Despite the fact that in the past there were sold some ISS 1PLAY to
create a three phase power system, currently this solution has been discontinued.

2.2.2 Earthing or Grounding System

Earthing or grounding specific parts of an installation is common practice done in the low voltage distribution
networks for safety and functional purposes. The safety ones are basically to protect a person against electric
shocks.
There are several ways to do it, but International standard IEC 60364 distinguishes three families of earthing
arrangements, using the two-letter codes TN, TT, and IT.
The first letter indicates the connection between earth and the power-supply equipment (generator or
transformer):
"T" — Direct connection of a point with earth (Latin: terra)
"I" — No point is connected with earth (isolation), except perhaps through a high impedance.
The second letter indicates the connection between earth or network and the electrical device being supplied:
"T" — Earth connection is by a local direct connection to earth (Latin: terra), usually via a ground rod.
"N" — Earth connection is supplied by the electricity supply Network, either as a separate protective
earth (PE) conductor or combined with the neutral conductor.
The network system used in your installation must be identified because the ISS 1Play can only work towards
some network types.
Technical Guide
Figure 6: Single phase system
10/11/2017
INGECON SUN STORAGE 1Play
9/29