HP Jet Fusion 4200 Product Documentation Site Preparation Manual page 24

PE connections for mains power should be made through an M8 stub.
Powerline disturbances
Reliable operation of your printer depends on the availability of relatively noise-free AC power.
In order to ensure optimum performance and reliability, your printer should be protected from variations in
●
line voltage, which are common to production printing environments. Lighting, line faults, or the power
switching commonly found in machinery in factory environments can generate line transients that far
exceed the peak value of the applied voltage. If not reduced, these micro-second pulses can disrupt system
operation.
● If the power line supplying the installation site is a public low-voltage line shared with other users, the
power line impedance Zmax must be less than 129 mΩ, to comply with European standard EN/IEC
61000-3-11. If other users on the same power line report any flickering of incandescent light bulbs,
contact your electricity supplier to verify that the power network has an impedance lower than that
specified above.
You are recommended to include overvoltage (OVP) and transient protection on the power supply to the
●
printer.
● All electrical noise-generating equipment, such as fans, fluorescent lighting, and air-conditioning systems,
should be kept separate from the power source used for your printer.
If you have power quality issues when taking power from the grid, an external power supply can be used in order
to meet the requirements of your configuration.
How to select an external power supply
Output power
The output power required from the external power supply will depend on the number of printers to be
powered:
For any group of three printers, add 60 kVA to the output power.
●
For any single printer remaining, add 25 kVA to the output power.
●
20 Chapter 2 Site preparation requirements for the printer ENWW