SMA VOLTAGE STABILIZER - Manual (Page 14)

5 Electrical Connection SMA Solar Technology AG
14 Ukonstanter-IEN103610 Installation Guide
5 Electrical Connection
5.1 Overview of External Components for Internal Power Supply
Figure 7: Connection area of the inverter and the voltage stabilizer
The temperature circuit monitors the operating temperature of the voltage stabilizer. If the operating
temperature of the voltage stabilizer exceeds 50 °C, the Sunny Central will shut down since the
voltage stabilizer will no longer be able to ensure a stable power supply.
5.2 Line Circuit Breaker
In order to operate the voltage stabilizer, it is necessary to secure the power supply of the
Sunny Central with a 16 A type D line circuit breaker. The line circuit breaker is located in the station
sub-distribution.
• Check which line circuit breaker is installed.
☑ A 16 A type D line circuit breaker is installed.
✖ There is no 16 A type D line circuit breaker installed?
Position Description
A Inverter
B Line circuit breaker (type D)
C Station sub-distribution
D Voltage stabilizer
E 415 V circuit (unstable input voltage)
F 230 V circuit (stabilized output voltage)
G Temperature monitoring