HP Jet Fusion 4200 Product Documentation Site Preparation Manual page 25

Examples
1 printer: Output power = 25 kVA
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2 printers: Output power = 2 × 25 = 50 kVA
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● 7 printers: Output power = (2 × 60) + 25 = 145 kVA
Output voltage
For printers installed in configuration 1 (380–415 V line-to-line three-phase configuration), the output voltage
should be as close as possible to 400 V, and at least in the range 380–415 V (including any tolerance margin of
the UPS).
For printers installed in configuration 2 (200–240 V line-to-line three-phase configuration), the output voltage
should be as close as possible to 230 V, and at least in the range 200–240 V (including any tolerance margin of
the UPS).
For both configurations, the total harmonic distortion of the output voltage (usually referred to as THDv), should
be as low as possible. Values above 3% could compromise part quality.
Other considerations
● Select a UPS of the type "full converter", also known as "back-to-back converter" or "double converter". In
this type of UPS, all the power transferred from the line to the load passes through the electronic
converters.
Choose a UPS without the BYPASS feature. If this is not possible, double-check that bypass is deactivated
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during installation.
UPS batteries are optional. If your main power supply suffers from frequent short blackouts, HP
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recommends a UPS with batteries, to keep the printer working during these events.
Installing an external power supply
Install the external power supply following all instructions and recommendations provided by the
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manufacturer of the power supply; and ensure that the installation is in accordance with the Electrical Code
requirements of the local jurisdiction of the country where the equipment is installed.
● In order to facilitate normal operations and maintenance of the printer, HP strongly recommends installing
the external power supply with at least some separation from the printer.
● Once the external power supply is installed and connected to the mains, ensure that the AC output of the
power supply is in accordance with the requirements described previously, before connecting it to the
printer.
Grounding
The printer must be connected to a good-quality, dedicated ground line in order to avoid electrical risk. Note your
obligation to comply with the National Electrotechnical Code (NEC) in the country of installation.
The following grounding tasks must be fulfilled to meet the site preparation requirements:
Grounding wires should be insulated and at least equal in size to the phase conductors.
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● Ground impedance must be less than 0.5 Ω.
ENWW Printer electrical configuration 21