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11.3.4.2. Connecting Requirement
• The equipment's power supply 1 complies with IEC/EN 61000-3-12 provided that the short-circuit power S
sc
is greater than or
equal to 828.38kW (for WH-SDC07C3E5/UD07CE5** and WH-SDC09C3E5/UDH09CE5**) at the interface point between the
user’s supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with
the distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit power S
sc
greater than or equal to 828.38kW.
• The equipment's power supply 1 shall be connected to a suitable supply network, having service current capacity ≥100A per
phase. Please liaise with supply authority to ensure that the service current capacity at the interface point is sufficient for the
installation of the equipment.
• The equipment’s power supply 2 complies with IEC/EN 61000-3-12.
• This equipment’s power supply 2 shall be connected to a suitable supply network, with the following maximum permissible
system impedance Z
max
at the interface for models:
WH-SDC07C3E5/UD07CE5** and WH-SDC09C3E5/UD09CE5**: 0.236Ω
Please liaise with supply authority to ensure that the power supply 2 is connected only to a supply of that impedance or less.
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