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DANGER
Electric shock
Potentially fatal voltages are present at the
inverter DC connections. When light falls on the
solar modules, they immediately start to gener-
ate electricity. This also happens when light
does not fall directly on the solar modules.
► Never disconnect the inverter from the solar
modules when it is under load.
► Turn the DC isolating switch to the 0 (OFF)
position.
► Disconnect the connection to the mains so
that the inverter cannot supply energy to the
mains.
► Disconnect the inverter from all AC and DC
voltage sources. Ensure that none of the
connections can be restored accidentally.
► Ensure that the DC cables cannot be
touched accidentally.
NOTICE
Maximum power at the DC connections.
Exceeding the maximum current can cause
overheating of the DC connections.
► Always take into account the maximum
current of the DC connections when
planning the installation.
NOTICE
Ingress of moisture.
Moisture can enter via open DC connections.
► To ensure protection degree IP65, close un-
used DC connections with the rubber plugs
that are attached to the DC connections.
Integrated string fuses and DC surge protection devices
► Replace damaged string fuses with devices of the same
type and from the same manufacturer.
► Surge protection devices are available from Delta.
Tools
The protective caps lock the DC plug so
that it can only be disconnected from DC
connections using the mounting tool.
► Observe the local regulations with
regards to the protective caps.
France: The protective caps must be
used.
Mounting tool for disconnecting the DC
plug and the protective caps from the DC
connections. Available from Multi-Contact.
Quick Installation Guide for Solar Power Inverter M88H EU V3 EN 5013240202 02 2018-03-22
Connecting solar modules (DC) – M88H_122 (CF)
Polarity of the DC voltage
► Check the polarity of the DC voltage of the DC strings be-
fore connecting the solar modules.
DC isolating switch
France: The DC isolating switch meets the regulations of the
UTE 15-712-1 (VDE 0100 712).
Safety notice
► Turn the DC disconnecter to the 0 (OFF) position before
connecting the solar modules.
Utilization of thin film modules
41
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