Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - Classic Control - Manual (Page 311)

Component Definition and Maintenance 6-21
7000 “B” Frame 7000-UM150I-EN-P – June 2013
The power semi-conductor usage in the converter section is as
follows:
Configuration Inverter SGCTs Rectifier SGCTs Rectifier SCRs
2300V, 6P 6 0 6
2300V, 18P 6 0 18
2300V, PWM 6 6 0
3300/4160V, 6P 12 0 12
3300/4160V, 18P 12 0 18
3300/4160V, PWM 12 12 0
6600V, 6P 18 0 18
6600V, 18P 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.
A T T E N T I O N A T T E N T I O N The PowerCage can house either SCRs or Silicon
Gate Commutated Thyristors (SGCT). The
SGCT circuit board is sensitive to static charges.
It is important that these boards should not be
handled without proper grounding.
A T T E N T I O N A T T E N T I O N Some circuit boards can be destroyed by static
charges. Use of damaged circuit boards may also
damage related components. A grounding wrist
strap is recommended for handling sensitive
circuit boards.