Convotherm 4 Series Installation Manual page 78

6 Installation
Recommended residual-current device
The appliance is fitted with one frequency converter (FC) or with two frequency converters (appliances
of size 20.10 and 20.20) with built-in EMC filter and an EMC mains input filter. These devices may
result in a leakage current of more than 3.5 mA per variable frequency drive.
Use a suitable RCD for the rated voltage:
Frequency converter (single phase)
Rated voltage
3N~ 400V 50/60Hz
3~ 230 V 50/60Hz
3~ 200 V 50/60Hz
1N~ 230V 50/60Hz
1N~ 100V 50/60Hz
1N~ 120V 60Hz
2~ 230 V 50/60Hz
Recommended residual-current device
Type A
Optional residual-current device
Type B/F
Properties of the residual-current device
The residual-current device (RCD) must have the following properties:
Filter for filtering out RF currents
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"Time delayed" trip characteristic for RCD devices with trip threshold >30 mA:
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prevents RCD being tripped by charging currents of capacitors and parasitic capacitances when
appliance is switched on.
"Leakage current protection, type SI" trip characteristic for RCD devices with trip threshold £30 mA:
■
insensitive to nuisance tripping.
Mains supply connection
The power cord must be an oil-resistant, sheathed and flexible cable in accordance with IEC 60245
(e.g. H05RN-F, H07RN-F). A maximum cable length of 5 m is recommended.
For table-top units with a wheeled platform, the power supply cable must be fed through a flexible, oil-
resistant and watertight cable conduit (such as a Hellermann PSRSC12 PVC protective conduit) that
complies with local regulations. The lengths of the power supply cable and the flexible cable conduit
must accommodate the range of movement allowed to the appliance by the retaining device of the
wheeled platform. When moving the assembly (platform plus appliance), never place the mains power
lead under tension.
The appliance does not need to be connected in a specific phase sequence or a specific direction of
rotation.
Frequency converter (three phase)
3~ 400 V 50/60Hz
3~ 440 V 60 Hz
3~ 480 V 60 Hz
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Type B/F
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