Test point
Tasks
High-current contact
Check whether the high-current contacts established at the installation site are tightened to
the correct torque. If the torque is not correct, release and clean the high-current contact and
tighten with the required torque.
Terminal lugs
Ensure that the terminal lugs are crimped edge to edge.
Cable support rails
Ensure that the cables are adequately attached to the cable support rails.
6.3.3
Sunny Central
6.3.3.1
Checking the Settings of the Switching Units
Test Point
Tasks
AC circuit breaker
Ensure that the settings comply with the specifications in the schematic diagram.
GFDI
Hygrostat
6.3.3.2
Checking the Connectors
Test Point
Tasks
Connectors on the CAN bus
Ensure that all connectors are securely in place.
Connectors on the SC20cont
Connectors on the inverter bridge
Connectors on the communication unit
Connectors on the hub
Connectors on the router
6.4
Connection and Measurement
6.4.1
Sequence for Connection and Measurement
Procedure
See
Use the tap changer on the MV transformer to adjust the voltage of the utility
grid.
Switch on the transformer panel and the ring circuit of the medium-voltage
switchgear.
Measure the voltages on the primary and secondary sides of the MV transformer
and record the values in the commissioning report.
Ensure that the supply voltage is within the permissible voltage range of the in-
verter of −10% to +15%.
Check the output voltage of the inverter.
Check the DC voltage.
6 Commissioning
SMA Solar Technology AG
System Manual
MVPS22JP-SH-en-11
76
Summary of Contents for 1000-1SC
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