Huawei OptiXRTN 980L Quick Installation Manual page 21

1
Installing Power Cables (2/2)
Check the fuse current of the external power supply.
Check the voltage and polarity of the external power supply.
Standard Voltage of the Input Power
WARNING
The IDU does not support AC power. Do not connect the IDU to an AC power supply. Otherwise, equipment may be
damaged and you may be injured.
Recommended Current Value of the External Fuse
–48 V ( DC )
–60 V ( DC )
RTN(+)
A
1 2 3 4
OUTPUT
ON
OFF
32A 32A 20A 20A
40 A
Allowable Voltage Range
–38.4 V to –57.6 V ( DC )
–48 V to –72 V ( DC )
NEG(-)
B 1 2 3
OUTPUT
ON
RTN1(+) RTN2(+) NEG1(-) NEG2(-)
OFF
INPUT
32A 32A 20A
20A
20
4