Instruction Manual

4
Power module configuration
You can determine the number of power modules to be configured for the system
according to the actual power consumption and power supply conditions.
• In an environment with two mains power inputs, you can configure N+N
redundant mode.
• In an environment with only one mains power input, you can configure N+1 or
N+N redundant mode.
• For easy usage and maintenance, be sure to configure a proper circuit breaker for
each power input. The rated current of the circuit breaker must be more than 20 A.
NOTE:
In the term
N+1 and N+N , the value of N depends on the number of power module
slots in the device. N+1 or N+N must not be more than the total number of power
module slots.
Installing and removing a power module
Installing a power module
Figure 2 illustrates the flow for installing a power module. Strictly follow the sequence to
avoid possible dangers.