38 Description TB9400/TN9275 Installation and Operation
© Tait International Limited May 2023
Table 1.1 PMU DC voltage limits
a
Parameter
Voltage Range
12V PMU 24V PMU 48V PMU
User-programmable Alarms
b
Low Battery Voltage
High Battery Voltage
10V to 14V
14V to 17.5V
20V to 28V
28V to 35V
40V to 56V
56V to 70V
User-programmable Limits
b
Startup Voltage (after shutdown)
Shutdown Voltage
10.9V to 15V ±0.3V
10V to 13.5V ±0.3V
21.8V to 30V ±0.5V
20V to 27V ±0.5V
43.6V to 60V ±1V
40V to 54V ±1V
Battery Protection (Fail-safe) Limits
Startup Voltage
Undervoltage Shutdown
Overvoltage Shutdown
Overvoltage Shutdown Reset
10.8V +0.2V
9.5V +0.3V
18.1V +
0.3V
17.1V +0.3V
21.6V +
0.5V
19V +0.5V
36.2V +
0.5V
34.2V +0.5V
43.2V +
1V
38V +1V
72.4V +
1V
68.4V +1V
a. The information in this table is extracted from the Specifications Manual. Refer to the latest issue of this manual
for the most up-to-date and complete PMU specifications.
b. Using the base station’s WebUI.