Manual

Component Definition and Maintenance 5-13
7000 “A” Frame 7000A-RM001A-EN-P – January 2011
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
Each drive consists of three PowerCage rectifier modules and three
PowerCage inverter modules.
AFE type rectifiers use SGCTs 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, AFE 6 6 0
3300/4160V, AFE 12 12 0
6600V, AFE 18 18 0
A T T E N T I O NA 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.