Solar Power Plant Installation and Electrical Infrastructure
In solar power plant installation, the DC side and the AC side carry different risks.
≥ 1 MΩ
Insulation Resistance Target
97% and above
Typical Inverter Efficiency
DC side installation
Panel arrays are connected in string lengths that match the inverter's MPPT input range. String boxes include overcurrent protection and a DC disconnector, and cabling is run with UV-resistant solar cable.
Power from the inverters comes together at the AC combiner panel; a synchronization test is performed before the grid connection, and the connection isn't energized until frequency and voltage amplitude are confirmed to match grid values.
What's Included
- String design and DC cabling
- String box and DC disconnector installation
- Inverter installation
- AC combiner panel and grid connection
- Synchronization testing
- String-level current-voltage measurement
| Mounting Type | Support Structure | Cable Approach |
|---|---|---|
| Ground-Mounted | Driven pile / ballasted base | Underground route |
| Rooftop | Clamp system | Rooftop cable channel |
| Single-Axis Tracker | Moving structure | Flexible cable, cable carrier chain |
Standards We Apply
IEC 61215 / IEC 61730
PV module test standard
TS EN 50160
Grid connection voltage quality
The grid connection point isn't energized until the synchronization test there is confirmed.
Frequently Asked Questions
What determines string length?
It's calculated from the inverter's MPPT input voltage range and the number of panels, which avoids the risk of an oversized or undersized string.
When does the grid operator reject a connection?
A connection can be rejected when AC-side sizing or synchronization settings don't meet the distribution company's technical specification, which is why it's checked beforehand.
Is production monitored after commissioning?
Initial production data is compared against the expected value, and if there's a deviation, string-level measurement is used to locate the source.
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