Rockwell Automation 7000A PowerFlex Medium Voltage Drive (A-Frame) - Classic Control - Manual (Page 319)

Component Definition and Maintenance 6-15
7000 “A” Frame 7000A-UM150F-EN-P –June 2013
PowerCage™
A PowerCage is a converter module, consisting of the following elements:
• epoxy resin housing
• power semi-conductors with gate driver circuit boards
• heatsinks
• clamp
• snubber resistors
• snubber capacitors
• sharing resistors
All drives have six PowerCages, three rectifier modules and three inverter
modules. There are two types of rectifiers: PWM and 6-pulse SCR.
PWM type rectifiers use SGCTs as semi-conductors.
SCR type rectifiers use SCRs as semi-conductors.
All inverter modules use SGCTs as semi-conductors.
The size of the PowerCage will vary depending on the system voltage.
The power semi-conductor usage in the converter section is as follows:
Configuration Inverter SGCTs Rectifier SGCTs Rectifier SCRs
2400V, 6P 6 0 6
2400V, PWM 6 6 0
3300/4160V, 6P 12 0 12
3300/4160V, PWM 12 12 0
6600V, 6P 18 0 18
6600V, PWM 18 18 0
A T T E N T I O N A T T E N T I O N To prevent electrical shock, ensure the main
power has been disconnected before working on
the converter cabinet. Verify that all circuits are
voltage free using a hot stick or appropriate
voltage-measuring device. Failure to do so may
result in injury or death.