SMA SC 200 Installation - Manual (Page 76)

Commissioning SMA Solar Technology AG
76 SC20_25_35-IEN094521 Installation Guide
7.1.3 Checking the Thermostat and Hygrostat Settings
The device contains adjustable thermostats for controlling the cabinet ventilators and the over-
temperature shut-off system. The heating system is controlled by an adjustable hygrostat. All
thermostats and hygrostats are pre-adjusted before delivery.
7.2 Checking the Voltages on the Sunny Central
Checking the AC Grid Voltage
• Measure and record AC voltages
– L1-L2
– L1-L3
– L2-L3
– L1-N
– L2-N
– L3-N
Check that the field of rotation is to the right.
Checking the settings of the thermostats and the hygrostat
Compare the settings with the specifications in the circuit diagram. If they deviate, set the
values specified in the circuit diagram.
System check
The system must be checked by the system installer.
WARNING!
Danger of fire if the connection is faulty.
Procedure before the commissioning test:
• Switch the Sunny Central to "Stop".
• Ensure that the fuses are not inserted.
• Ensure that the internal main switch, circuit breaker and automatic fuse are not
activated.
• Leave the service room before switching on the voltage.
Deviating grid voltage
If the grid voltage deviates greatly, adjust the transmission ratio of the medium-voltage
transformer if applicable.