Introduction; Intended Use - VOLTWERK VC 200 Instrucciones De Servicio

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Introduction

Transformerless
1.1
Transformerless central inverter
Central inverters convert the direct voltage output from solar generators
into grid-compliant alternating voltage and supply power as three-phase
current into the public power grid.
Each central inverter can hold up to 4 string connections, with the result
that you can dispense with a generator switch box. This makes it easier to
plan a photovoltaic system (PV system) and saves costs.
There are 3 levels of performance of transformerless central inverters:
Rated capacity 200 kVA
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Rated capacity 300 kVA
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Rated capacity 350 kVA
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All levels of performance have the same technical design and the same
function.
Each central inverter responds to malfunctions in the grid in accordance
with the BDEW (German Federal Association for the Energy and Water
Industries) directive "Generation systems on medium-voltage grids" (last
revised June 2008):
Remains on the grid (t ≤ 150 ms).
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Stabilises the grid voltage by feeding in the idle power.
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Contributes to the short circuit current.
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Reduces the active power when the frequency is increased.
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Corresponding settings in the display are requirements for this.
If the energy supply company wants to control the photovoltaic system
externally in accordance with the German Renewable Energy Sources Act
(EEG), then combine the central inverter with the manufacturer's signal
converter GridControl.
The display shows information on the status of the central inverter, the grid
characteristics and possible device fault messages.

Intended use

Central inverters are designed exclusively for the conversion of direct
current from solar generators to alternating current. Any other use will not
be considered intended use. Central inverters are designed for grid
connection to a medium-voltage transformer and may only be operated in
IT (Isolé Terre) grids.
The device may only be installed and operated with due consideration of
the specifications (see Specifications, page 87). The device must only be
installed and operated at temperatures T = –20°C to +50°C and a relative
humidity of 0-95% (non-condensing) in the electrical operating area. As of
T = +45 °C, the output is automatically reduced in devices from the level of
performance 350 kVA. Intended use is not guaranteed at other
temperatures or at a higher relative humidity.
Operating manual
1 Introduction
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