Contemporary Research TD960801-0MC 用户手册
TD960801-0MC
8
Figure 2-2. Redundant DC Powered
2.4.3
AC Powered
If only AC power is available, the EXTEND-A-BUS can be
powered by the secondary of a low voltage transformer whose
primary is connected to the AC mains. The secondary voltage
must be in the range of 8 to 24 VAC, 47–63 Hz with the
capability of delivering up to 4 VA of apparent power. The
secondary of the transformer must not be grounded. For
convenience, two auxiliary power supplies are available:
powered by the secondary of a low voltage transformer whose
primary is connected to the AC mains. The secondary voltage
must be in the range of 8 to 24 VAC, 47–63 Hz with the
capability of delivering up to 4 VA of apparent power. The
secondary of the transformer must not be grounded. For
convenience, two auxiliary power supplies are available:
•
AI-XFMR for 120 VAC primary power
•
AI-XFMR-E for 240 VAC primary power
Reference Figure 2-3.
Figure 2-3. AC Powered