User's Manual

ADCP-75-210 • Issue 1 • November 2006

Page 28

1.11 Circuit Breaker Panel

The Circuit Breaker Panel, shown in Figure 23, contains five circuit breakers. It distributes the

RAN’s -48 VDC power and protects the RAN’s electronics. Table 15 gives the circuit breaker

functions. Table 16 describes the panel LEDs.

Figure 23. Circuit Breaker Panel

1.12 Backup Batteries

The NXD RAN has two backup battery options:

• Extended Batteries: provide backup protection for up to two hours. These are four 12V,

85-100 AH internal batteries connected in series for a -48V system. The four batteries

together with associated wiring and hardware weigh 325 pounds (147.7 kg).

Table 15. Circuit Breaker Functions

BREAKER FUNCTION

1A PA1

2A PA2

3A PA3

4A PA4

5A cPCI chassis

Table 16. Circuit Breaker Panel LEDs

REF # DESIGNATION DEVICE FUNCTIONAL DESCRIPTION

1 OK Green LED Okay. Lights when AC power is present

2 FAULT Red LED Fault. Lights when rectifier is limiting current

21320-A

SYSTEM OK

LEDs

FAULT

LEDs

CIRCUIT

BREAKER

(5 PLACES)