Maintenance; Safety Instructions - VOLTWERK VC 200 Instrucciones De Servicio

7

Maintenance

7.1
Transformerless central inverter

Safety instructions

Risk of fatal injury due to high voltages!
Death or serious injury could result when working on high-voltage and
high-current electrical systems and live parts.
Before starting any work on electrical systems:
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Disconnect the unit.
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Ensure that the unit cannot be switched on again.
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Verify that the system is fully deenergised.
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Earth and short-circuit the unit.
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Cover or shield any adjacent live components.
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N.B. On photovoltaic systems, the power source is always active
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during the hours of daylight.
Risk of fatal injury due to residual voltages!
Residual voltages inside the device can result in fatal surges. Capacitors
may be charged even after the device is disconnected.
When central inverters are disconnected via the On/Off switch, voltage is
still present at the AC and DC connections and in the internal control. The
On/Off switch is not a DC disconnector.
Open all external disconnectors and secure them against being
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switched back on.
Open internal circuit breakers.
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After disconnecting the device, always wait for a period of 15 minutes
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before touching.
Check that the device is deenergised using a suitable measuring
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instrument, in accordance with applicable guidelines.
All measuring devices and cables used must be approved for at least
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protection class CAT II 1000 V or CAT III 600 V (in accordance with IEC
EN 61010-1).
Risk of fatal injury from arcing and short circuit currents!
Very high DC voltages (no zero point) may exist in photovoltaic systems,
which could cause arcing in the event of faults or if components such as
fuses or plugs are not used in the specified manner.
The short circuit current of the solar generator is only slightly higher than
the maximum operating current and is always dependant on current
irradiation levels. This means that, where short circuits occur, there is no
definite guarantee that circuit breakers will be tripped.
Use components in the correct manner.
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Operating manual
7 Maintenance
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