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Emerson MPR15 Series User Manual

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Operation   27 
25A Switch Mode Rectifier
NT5C06B / C   Installation and User Manual
 
Output current monitor 
The rectifier monitors the output current. The unit will initiate an RFA alarm 
when no output current (see Note below) is detected during parallel 
operation. 
Note:
 
Give an alarm at no load condition, only for the following 
releases or under. 
NT5C06BB, BB-1, BB-3, BC 
Rel.10 
NT5C06CA, CA-1, CA-3, CA-5, CC 
Rel.10 
NT5C06CB, CB-1, CB-3, CD 
Rel.12 
NT5CO6CE-61(-46)  
Rel.12 
Measurement features 
Remote rectifier current measurement 
The rectifier is equipped with a 50 mV / 25 A shunt connected on the 
positive lead, near the output terminals. The shunt signal is available on the 
signal connector (see Figure 3). 
Test points (V+, V-) 
Voltage jacks are provided for measuring the voltage at the point of 
regulation. 
Control features 
Remote ON/OFF control 
When a ground signal is applied to the 'Temporary Release' (TR) input, the 
rectifier inhibits its operation and activates the rectifier's RFA. Upon removal 
of the remote ground signal the rectifier returns to normal operation. 
Remote high voltage shutdown 
In addition to the local high voltage shutdown feature, the power plant 
controller can shut down any rectifier by sending a high voltage shutdown 
signal, ground (BAT RTN) pulse. The rectifier will shut down if it is 
supplying more than 10% of its full load rating.