Emerson 7000 Manuel D’Utilisation

 

2-1  Operation 

                                                                         381333-395

 

The MV ATS is shipped with the circuit breakers and controls in 
the following state: 

ON CB SECTION(S) - Circuit Breakers, check these items 
▪ Normal source circuit breaker (CBN) 
   in the OPEN position with the closing spring discharged. 
▪ Emergency source circuit breaker (CBE) 
   in the OPEN position with the closing spring discharged. 
▪ Normal source circuit breaker control switch (53CBN) 
   in the TRIP position (green target displayed on control switch) 
▪ Emergency source circuit breaker control switch (53CBE) 
   in the TRIP position (green target displayed on control switch) 

ON CONTROL SECTION – Controls, check this item 
▪ Transfer Switch Auto-Man selector switch (53AM) 
   in the MAN (manual) position. 

 
 
 
 
 
 
 
 
 
 
 
 

After the MV ATS is installed, the Normal source can be energized.  Then the controls can be set for automatic 
(standby) operation.  The Normal and Emergency sources must be available.  Follow this procedure: 

ON CONTROL SECTION – Controls, check these items 

▪ The transfer control indicator lights Normal Source Accepted and TS Locked Out should be on. 

▪ The controller display should show that the transfer switch is Locked Out. 

ON CB SECTION(S) - Circuit Breakers, check these items 

▪ Normal source circuit breaker control switch should indicate that the circuit breaker is OPEN (green light). 

▪ Emergency source circuit breaker control switch should indicate that the circuit breaker is OPEN (green light). 

1. On Control Section, turn the Transfer Switch Auto-Man selector switch to the AUTO (automatic) position. 

2. On CB Section, turn the Normal source circuit breaker control switch to CLOSE position (red target window). 

3. On CB Section, turn the Emergency source circuit breaker control switch to the CLOSE position (red target). 

4. On Control Section, press the transfer controls Alarm Reset button.  Normal source circuit breaker should close. 

The Normal source CB control switch should indicate that the circuit breaker is CLOSED (red light). 
The ATS is now in an automatic (standby) operating mode.  Proceed to transfer test. 

Emergency source 

circuit breaker 

control switch 

Normal source 
circuit breaker 
control switch 

Transfer Switch

control switch 

Figure 2-1.  Location of control switches 

Figure 2-2.  Control switches 

Breaker control 

target indicator 

green=tripped 

red=closed 

Circuit breaker 

position lights 

green=CB open 

red=CB closed 

     WARNING 

Be sure to close both enclosure doors 
before proceeding to prevent personal 
injury in case of electrical system fault. 

(CB SECTION)      (CONTROL SECTION)