Emerson MPR25, MPR15 Series Procedure 23 - Adjustment and verification continued, Step, Action

Models: MPR15 Series MPR25

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Procedure 23 - Adjustment and verification ( continued )

 

 

 

Appendix B: NT5C10CO shelf

109

 

 

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.

 

 

 

 

 

 

 

 

–end–

25A Switch Mode RectifierNT5C06B / C Installation and User Manual

Page 109
Image 109
Emerson MPR25, MPR15 Series user manual Procedure 23 - Adjustment and verification continued, Step, Action