Technical Product Specification

Power Subsystem Intel® Server System SR1600UR TPS
22 Intel order number E45725-010 Revision 1.8
3.5.3 Over-temperature Protection (OTP)
The power supply is protected against over-temperature conditions caused by loss of fan
cooling or excessive ambient temperature. In an OTP condition, the PSU shuts down.
When the
power supply temperature drops to within specified limits, the power supply restores power
automatically, while the 5 VSB remains constantly on. The OTP circuit must have built-in
hysteresis such that the power supply does not oscillate on and off due to the temperature
recovery condition.
The OTP trip level has a minimum of 4°C of ambient temperature hysteresis.
3.6 Power Supply Status LED
There is a single bi-color LED to indicate power supply status. The LED operation is defined in
the following table.
Table 17. LED Indicators
Power Supply Condition
LED
No AC power to all power supplies Off
Power supply critical event causing a shutdown:
failure, OCP, OVP, OTP
Amber
AC present/Only 5 VSB on (PS off) 1 Hz Blink Green
Output ON and OK
Green
The LEDs are visible on the power supply’s exterior face. The LEDs’ location meets ESD
requirements. The LEDs are securely mounted in such a way that incidental pressure on the
LEDs does not cause it to become displaced.
3.7 AC Power Cord Specification Requirements
The AC power cord used must meet the specification requirements listed in the following table.
Table 18. AC Power Cord Specifications
Cable Type SJT
Wire Size 16 AWG
Temperature Rating 105ºC
Amperage Rating 13 A
Voltage Rating 125 V