Welbilt C4 EB 12.20, Руководство по установке

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6 Installation
6.1 Electrical installation
6.1.1 Planning the electrical installation
Meaning
It is crucial to the safe and reliable operation of the appliance that the electrical system is installed carefully and correctly. All
the rules and regulations listed here, and the described procedure, must be strictly followed.
Rules for safe electrical installation of the appliance
Observe the following rules to prevent hazards caused by faulty electrical connections:
■
The case of the appliance must be grounded and connected to the equipotential bonding system in accordance with the
recognized codes of practice.
■
All electrical connections must be checked when the appliance is put into service to ensure cables are laid correctly and
connections are made properly.
Regulations for the electrical installation
Observe the following requirements to prevent hazards caused by faulty electrical connections:
■
The electrical supply must be connected in accordance with German VDE requirements 0100 and/or with applicable local
regulations of the professional associations and of the relevant utility.
Equipment provided by customer and electrical installation regulations
The table below shows what equipment must be provided by the customer and what regulations must be observed when
connecting the appliance.
Equipment Rules
Fuse Fuse protection and connection of the appliance must comply with local regulations and
national installation requirements.
Protective equipotential bond-
ing system
The appliance must be incorporated in a protective equipotential bonding system.
Protective equipotential bonding system: Electrical connection that ensures that the frames
of electrical equipment and any external conductive components are at an equal (or practi-
cally equal) potential.
Residual-current device
(RCD)
If the installation regulations require protection by a residual-current device (RCD), then
suitable residual-current devices meeting the relevant national regulations must be used.
If the installation includes more than one appliance, one residual-current device must be
provided for each appliance.
Disconnector An easily accessible all-pole disconnection device with a minimum contact separation of
3 mm must be installed close to the appliance. The appliance must be connected via this
disconnection device.
The disconnector is used to disconnect the appliance from the electrical supply for clean-
ing, repair and installation work.
Recommended residual-current device
The appliance is fitted with a frequency converter (FC) and a built-in EMC filter plus an EMC line filter. These devices may
result in a leakage current of more than 3.5 mA per variable frequency drive.
Use a suitable residual-current device (RCD) for the rated voltage:
Frequency converter (single phase) Frequency converter (three phase)
Rated voltage
3N~ 400 V 50/60 Hz
3~ 400 V 50/60 Hz
3N~ 380 V 60 Hz 3~ 440 V 60 Hz
6 Installation
Installation manual 40