Communication base station inverter grid connection length

What is decentralized inverter configuration?

By now, decentralized inverter configuration represents a technically sensible and cost-effective system solution, even in large plants, and it stands out in comparison with centralized structures due to key advantages. Flexible and optimal string configuration for each inverter. Local MPP-Tracking for a limited number of PV modules.

How many strings are connected in parallel at the inverter?

Most of the time more than 3 strings are connected in parallel at the inverter when designing large PV plants and where Sunny Mini Central inverters are used.

Do transformerless inverters require a TN grid?

Transformerless inverters re-quire a TN grid with a PE connection in accordance with the standards. Since the insulation resis-tance is dependent on the module surface, special attention must be paid to the configuration of large plants with thin-film modules in order not to exceed the threshold values mentioned.

How does a generator plant connect to a medium-voltage grid?

is provided by the utility operator. The connection of the generator plant to the medium-voltage grid takes place by means of a switchgear at the connection point which has to be accessible for the utility operator at all times and which must be equipped as a switching device with at least load switching capacity and a disconnection point.

How do PV inverters work?

The inverters distributed in the PV array in a non-centralized way are bundled in groups of six in an AC distributor and they are connected with an aluminum cable to the medium voltage transformer (compact station). Material costs for low-voltage cables and distributors in the connection of 17 kW Tripower devices to various MS transformer sizes1.

How to connect NH inverters?

For a direct connection of the inverters, the corresponding number or line circuit breakers should be used. Optionally, instead of line circuit breakers you can use fuse-switch-disconnectors on copper busbars. The connection to the NH fuse switches is realized with cross sections of up to 240 mm2.