VOLTWERK VC 200 Instrucciones De Servicio página 146

5 Installation
NOTICE
NOTICE
56
For each central inverter, use one medium voltage transformer or a
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shared transformer with galvanically isolated low-voltage windings. If
you are using a transformer without isolated low-voltage windings, you
can connect up to a maximum of 4 central inverters. Please note:
Solar generator must not be earthed.
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Chapter 4.4, page 48.
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Connecting to the grid
1. Remove the lower safety cover.
2. Check the cable lead of the AC cable.
Material damage due to unsuitable cable lugs!
Cable lugs may come undone, thereby interrupting the flow of current and
causing material damage.
Use cable lugs of the correct size, ensuring that the cable lugs match:
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the chosen cable diameter,
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the device's connection bar and
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the diameter of the threaded bolt.
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Only crimp the cable lugs with approved tools.
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Do not use aluminium cable lugs.
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If aluminium cables are used, use transition cable lugs on copper.
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3. Crimp the cable lugs.
Material damage due to loose screw connections!
If the specified tightening torques are not observed, the screws may
become loose as a consequence of magnetic influences or vibration in
the connection bars. Loosened screw connections change the resistance
and the conductivity at the connection. Operation of the product can be
adversely affected and it may suffer damage.
Check connections before commissioning the device.
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Leave screws and nuts untreated. Do not treat with grease or
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otherwise.
Thread size
M12
Operating manual
Tightening torque (Nm)
93
Transformerless central inverter