Cisco Systems ICS-7750 manual Technical Specifications for Power Supply Module

Chapter 3 Summary of Power and Cooling System Features

Power Supply Module

Key Features

The power supply module has the following key features:

•Automatic remote enable/disable signal: Ensures that the power supply remains off until fully seated and turns the power supply off during removal.

•Operates as a single or redundant module.

•Hot-swappable, accessible from the front of the chassis.

•Current sharing when two power supplies reside in a chassis (the power supplies do not load share).

•Four DC voltage outputs: +3.3V, +5V, +12V, and –12V.

•AC input range of operation: 100 to 240 VAC.

•IEC 320-C14 AC input receptacle.

•Overvoltage protection: Power supply shuts down if the power output exceeds the nominal output by 120 percent.

•Automatic thermal shutdown: If the ambient temperature is too high, the power supply shuts down automatically; when the ambient temperature returns to a safe operating range, the power supply restarts automatically.

•Automatic redundancy when two power supplies are installed.

Technical Specifications

Table 3-2lists the technical specifications for the power supply module.

Table 3-2 Technical Specifications for Power Supply Module

Type		Description
Dimensions and weight		10 lb (4.5 kg)
Temperature		Operating: 23 to 113ºF (–5 to 45ºC)
		Nonoperating: –40 to 185ºF (–40 to 85ºC)
Relative humidity		Operating: 10 to 90% (noncondensing)
		Nonoperating: 10 to 95% (noncondensing)
Thermal shock		Operating: –5 to 45ºC, 0.5ºC/minute
		Nonoperating: –40 to 85ºC, changeover time between 2 and 3 minutes
	Cisco ICS 7750 System Description
3-6		78-10360-02