Grounding; Power Supply; Cooling - H3C CR16000-M Installation Manual

Grounding

Using a good grounding system to protect your router against lightning shocks, interferences, and
ESD is essential to the operating reliability of your router. For more information about grounding the
router, see "Grounding the router."
Make sure the resistance between the chassis and the ground is less than 1 ohm.

Power supply

A good power supply system is essential for correct operation of the router. Make sure the power
supply conditions and supplied power meet the router requirements.
Power supply conditions
The router supports AC, DC, HVDC, and battery power input. Make sure the equipment room
provides the following power supply conditions:
•
The AC power supply system is stable and reliable and capable of providing power required by
the router. As a best practice, use two mains power sources for the AC power supply system. If
only one mains is available in the equipment room, prepare a diesel generator as a backup
power source.
•
The DC power supply system is stable and reliable and the output voltage is stable and within
the range required by the device.
•
Enough batteries are available to ensure uninterrupted device operation in the event of a power
failure.
Power
For the power supply system to provide power as required by the router:
1. Calculate the system power consumption.
The device supports multiple types of interfaces modules. The system power consumption
varies by module type. For information about power consumptions of the system and its
components, see H3C CR16000-M Routers Hardware Information and Specifications.
•
Determine the number and type of power supplies based on the total power consumption of the
router. Make sure the total maximum output power of the power supplies is greater than the
total power consumption of the router. For information about the available power supplies, see
H3C CR16000-M Routers Hardware Information and Specifications.
•
Verify that the power supply system at the installation site is stable and provides power that
meets the power supply specifications, including the rated input voltage and input current.

Cooling

Plan and build the ventilation system at the installation site carefully to ensure adequate cooling for
the device. Make sure the following requirements are met:
•
A minimum clearance of 10 cm (3.94 in) is reserved around the inlet and outlet air vents.
•
The rack for the router has a good cooling system.
•
The air conditioners do not blow air directly onto the router.
•
The installation site has a good cooling system.
Figure2-1 demonstrates the airflow through the CR16000-M chassis.
2-3