Sun Microsystems Netra T4 AC100, Service And System Reference Manual

Page: 219 / 284

Appendix B Product Specification B-3
B.2.1.3 Overcurrent Protection
The AC outlet socket should be protected by a 15 A double-pole double-throw circuit
breaker.
B.2.2 Netra T4 DC100 System
B.2.2.1 DC Input
B.2.2.2 Source Site Requirements
The DC source must be:
■
–48 VDC or –60 VDC nominal centralized DC power system
■
Electrically isolated from any AC power source
■
Reliably connected to earth (that is, the battery room positive bus is connected to
the grounding electrode)
■
Rated for a minimum of 20 A per feed pair
Note –
The Netra T4 DC100 system must be installed in a restricted access location.
The IEC, EN and UL 60950 define a restricted access location as an area intended for
qualified or trained personnel only and having access controlled by a locking
mechanism, such as a key lock or an access card system.
TABLE 12-1
DC Power Supply Input Requirements
Electrical Element Requirement
Voltage
1
1. The DC power supply range is -40VDC to -75VDC.
-48 VDC / -60 VDC
Max. operating current 12 A @ -48 VDC / 10 A @ -60 VDC
Max. inrush current 30 A @ -48 VDC / 24 A @ -60 VDC