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Appendix B: NT5C10CO shelf 109
25A Switch Mode RectifierNT5C06B / C Installation and User Manual
Procedure 23 - Adjustment and verification ( continued )
Step Action
6
Close and open the SW1-6 switch (timer reset).
7
Verify for the following:
• The "DELAYED START" yellow LED at the circuit pack is lit.
• The RFA red LED of the rectifier at the "DELAYED START"
position is lit.
• The operation of the rectifier at position "MAIN" is normal.
• No RFA alarm signal shall be sent to the system monitoring
circuit.
• After approximately 30 seconds the yellow LED and the red (RFA)
LED will extinguish. The DELAYED START rectifier will resume its
normal operation
8 Connect an external 6 ampere load (or use a telecommunication system
load) and readjust the float and equalize voltage of the rectifiers so they
share the load.
9 Reset the timer by closing and opening the SW1-6 switch and observe
the operation of the power system:
• The DELAYED START yellow LED is lit.
• The output current of the main rectifier is approximately 6 A.
• The delayed start rectifier is inhibited. Zero output current. RFA
LED lit.
• No alarm indication on the system monitoring unit after
approximately 30 seconds:
• Delayed Start LED is off.
• The Delayed start rectifier resumes normal operation and shares the
total load of the system with the other rectifier.
10 Set the timer switch as shown in the following illustration.
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