2 connection to the power distribution grid (ac), 1 conditions for the ac connection, Connection to the power distribution grid (ac) – SMA SMC 7000HV Installation User Manual
Page 24: Conditions for the ac connection
Electrical Connection
SMA Solar Technology AG
24
SMC70HV11-IA-IEN112970
Installation Manual
5.2 Connection to the Power Distribution Grid (AC)
5.2.1 Conditions for the AC Connection
Cable design
Use "Sunny Design" version 2.0 or higher for the dimensioning of the conductor cross-sectional areas
(see "Sunny Design" design program at www.SMA.de/en).
Cable Requirements
Connection requirements of the distribution grid operator
Always observe the connection requirements of your distribution grid operator!
Cut line losses in half
If three inverters with symmetrical feeding are combined to form a three-phase system, the
neutral conductor is not subjected to any load, and the line losses are halved. Thus, the
maximum possible cable length is doubled.
Position
Description
Value
A
External diameter
12 mm ... 25 mm
B
Conductor cross-section
10 mm² … 16 mm²
C
Length of insulation to be stripped off
approx. 16 mm