SCR CONTROLLED VARIABLE DC POWER SUPPLY, P/N 18288PS
(0 TO 14 VDC, 1000 AMPS OUTPUT)
Customer requirements are shown below:
- SCR Controlled Variable DC Power Supply, P/N 18288PS.
- Input: 480 VAC, 3 PH, 60 Hz.
- Output: 0 VDC to 14 VDC, 1000 Amps max.
- Isolation transformer steps down 480 VAC to 13.85 VAC, 3 PH.
- 120 VAC control transformer is included.
- SCR control is phase sensitive. Hence, 3 PH monitor is required.
- Fuses are not included.
- Output choke and capacitor are not included.
- Digital Voltmeter and Ammeter to monitor output are included.
- Input contactor and overload relay are included.
- ON/ OFF push button capability is included.
- Emergency Power off (EPO) is included.
- Voltage control potentiometer and Current limit potentiometer are included. This feature may be useful for the battery charge capability.
- Indoor CP119 enclosure included, 50″ H x 36″ W x 26″ D.
- All input and output connections inside the enclosure.
- Since it is an SCR controlled output, ripple increases as output is lowered from the max.
The system block diagram is shown below:
Block Diagram for P/N 18288PS
The control section is shown below.
SCR Firing Card and Regulator Board
The SCR bridge assembly is as shown below.
1000 A SCR Bridge Assembly. 120 VAC Tarzan fans are installed for forced cooling.
The dimension of the enclosure is shown below:
The SCR bridge and other components are installed
on the side of a CP119 enclosure 50″ H x 36″ W x 26″ D
Photo of the enclosure is shown below:
Indoor Enclosure: 50″ H x 36″ W x 26″ D
To discuss your specific requirements, please contact us toll free at (800) 595-7096, or send us an email at [email protected].
