Power specifications

Power supply

The following table lists Alcatel-Lucent 1665 DMXtend shelf power requirements.

Table 10-112: Alcatel-Lucent 1665 DMXtend power supply requirements

Item	Description
Circuit Breakers (two per shelf)	10.0 A
Voltage range, all components	−40.0V to −57.0V
Power Feeders	two −48V power feeders [BREAKER (A) and BREAKER (B)]

Circuit breakers

Alcatel-Lucent 1665 DMXtend uses on-board power conversion eliminating the need for slots for bulk power converters. Two independent −48V office power feeders (A and B) enter the shelf through connectors and are filtered and distributed to the circuit packs through circuit breakers. Power conversion is performed through modular power converters located on the circuit packs. In each circuit pack, the feeders are diode ORed, fused, filtered, and regulated by the board-mounted power modules. This provides the required redundancy in case of the loss of one feeder or circuit breaker. The green Power LEDs located next to each circuit breaker (A and B) indicate power is being fed to the breaker.

Current drains

The following table provides current drain information for Alcatel-Lucent 1665 DMXtend shelves with a single power feed.

Table 10-113: Current drains

Shelf	Current Drain @ −48V	Current drain @ −40V
Alcatel-Lucent 1665 DMXtend shelf	7.9A	9.5A 1

Notes:

1. If your shelf is equipped with 1xLNW2, 2xLNW84s, 4xLNW20s, and 1xFan unit, and you lose one power feed or circuit breaker, the shelf’s current drain will exceed the 10.0A capacity of the remaining circuit breaker and your shelf will lose power.

Heat dissipation

The maximum heat dissipated for Alcatel-Lucent 1665 DMXtend is 380 Watts.