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7.1.3. Discharge Mode
In operating state [Discharging], the Instagrid ONE is to be considered as power generation device (in
terms of DIN VDE 0100-551 / IEC 60364-5-55), which implements the protective measure “protective
separation” (e.g. known from DIN VDE 0100-410 / IEC 60364-4-41).
Due to the insulation properties described in [Chapter 7.1.1.] , this protective measure remains eective
even if the charging input [8] is connected to the mains supply during discharge mode.
Pertinent standards on electrical safety (see above) assess this use of exactly one consumer in conjunc-
tion with the feature “protective separation” as inherently safe.
7.1.4. Connecting more than one Consumer to the
Instagrid ONE
We advise against the connection of several consumers to the Instagrid ONE (either through the use of
both outputs of the device or through the use of multiple socket outlets, etc.) without the implementa-
tion of further protective measures.
The following protective measures are already provided by the design of the Instagrid ONE:
• The Instagrid ONE is equipped with two outputs [4 | 9], which are switched in parallel relative to
the active conductors. The protective conductor connections of both outputs are connected by
means of an equipotential bonding conductor, which is insulated from all other parts of the device.
• As described in [Chapter 7.2.1.], an automatic shutdown of the output in the event of a short-cir-
cuit within <200 ms is ensured (loop impedance <= 1.5 Ω).
• The following protective measures must be implemented by the user:
• Looping a residual current device into the feed line of every consumer. Looping the residual current
device in as close as possible to the Instagrid ONE permits it to be tripped if an insulation fault in
the wiring occurs.
• Clearly arranged wiring with an as short as possible overall length of the wiring system. To ensure
a speedy tripping (<200 ms) of the electronic fuse of the output [Chapter 7.2.], the line resistance
between Instagrid ONE and consumer should not exceed a value of 1.5 Ω. A line with a cross section
of 1.5mm² achieves this resistance at a length of approx. 60 metres (including supply and return
conductor, excluding contact resistances at plug-in connections).
• Regular electrotechnical inspection of the consumers used. If an electric device is predominantly
used in conjunction with protective separation (or in the IT network) the likelihood of insulation
faults being detected decreases. A regular inspection of the consumers used by a skilled electri-
cian is therefore vital.
7.2. Protective Measures at Output
7.2.1. Overload
The output of the Instagrid ONE is protected against overload by several independently superposed
mechanisms:
• Energy content – due to the limited energy content of the integrated accumulator, no permanent
current consumption is possible. The nominal current of 16 A can be drawn for a maximum of 35
minutes, for 20 A this is reduced to only 27.5 minutes.
• A thermally induced shutdown – the internal temperature of the Instagrid ONE is constantly mon-
itored during operation. The exceedance of xed thresholds leads to a shutdown of the Instagrid
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