714-624-4740 quote@cehco.com

HIGH VOLTAGE SCR-CONTROLLED POWER SUPPLY

OUTPUT 0 TO 5000 VDC, 70 AMPS, P/N 18278PS

 

TheSpecifications:

  • High Voltage SCR Controlled Power Supply,  P/N 18278PS
  • Power Rating: 350 KW.
  • Input: 480 VAC, 3 PH, 60 Hz
  • Output: 0 to 5000 VDC, 70 Amps max
  • Ripple: 2 % approximately at maximum rated voltage
  • Configuration: 12 pulses externally SCR-controlled rectifier system
  • Protection Devices:
    • Input contactors
    • Overload relay shutoff
    • Input surge suppressor
    • Thermal switches
  • Output current limiting resistor (made with 5 Ohm Kanthal heating element)
  • Emergency power shutoff
  • Cooling: Each 6 pulse rectifier assembly is cooled by three 10” fans
  • Interface: 4/20 ma converter interface for output voltage and output current to SCR controller.
  • Enclosure: The overall dimension of the unit is (78”H x 38”W x 53”D). It is comprised of two separate enclosures each with dimensions of (78” H x 38” W x 26” D) which are integrated together to form a single enclosure. Each half enclosure has one 6-pulse transformer and one 6-pulse high voltage rectifier.
  • Weight: Approx. 5000 lbs.
  • SCR Controller: The 12-pulse SCR controller is supplied by the customer. We were responsible for the 12-pulses Transformer and 12-pulses Rectifier section. Portability: The unit can be lifted up with a forklift. It can also be moved around with a 5000 lb pallet jack.
  • Transformer: Two 200 KVA transformers are used to step 480 VAC to 3750 VAC each in a 12 pulse configuration
  • Rectifiers: Two 6-pulse rectifier assemblies capable of 5000 VDC and 60 Amps output were used. The high voltage rectifier assemblies are isolated and protected in a fiberglass plenum within the enclosure.
  • Blocking Diode: Each diode of the 6 pulse rectifier consists of 10 diodes in series to offer a blocking voltage of 12000 V (PIV)

The photo of the unit is shown below. This is a 12-pulse High Voltage SCR Controlled power supply.

 

a19

 

The details of the 12000 V (PIV) 6 pulse diode/rectifier assemblies are shown below:

 

a25

 

To discuss your specific needs, please contact us at (714) 624-4740, or send us an email at quote@cehco.com