Rockwell Automation 7000L PowerFlex Medium Voltage AC Drive (C Frame) - Classic Control - Manual (Page 20)

1-2 Overview of Drive
7000L-UM300I-EN-P – June 2013 7000 “C” Frame
Liquid Cooling
The PowerFlex 7000L “C” Frame liquid-cooled drive utilizes a
closed loop system to cool the converter main power components
and the integral DC link inductor.
The main benefits of liquid cooling include:
 Smaller drive dimension compared to air cooled drives of similar
rating
 Higher power rating capability
 Quiet operation in control room
 Low loss rejection to the control room reduces air conditioner
loading
 Majority of losses rejected outside the control room via a liquid
to air or liquid to liquid type heat exchanger
The main benefits of the 7000L “C” Frame liquid-cooled drive
include:
 Completely integrated MV drive package reduces customer
installation costs and start-up time.
 Higher power rating capability (up to 9000 hp / 6715 kW)
 18 Pulse and PWM rectifiers for low harmonic solutions that
meet IEEE 519 Harmonic Guidelines
 Motor friendly current and voltage output waveforms for use
with standard new and existing motors
– Inverter duty motors not required
– Motor temperature de-rating not required
– No additional dv/dt or peak voltage stress to motor insulation
system
– Tested up to 15 kilometer cable distance between drive and
motor
 Spacious cable termination cabinet for ease of use by installation
contractor
 Cable termination stabs accommodate:
– 3 cables in / 3 cables out ( 6 pulse or PWM with line reactor)
– 9 cables in / 3 cables out (18 pulse)
–
Top or bottom entry and exit of line and load cables
 90% of drive losses are rejected outside the control room
 Integral liquid-cooled DC link inductor reduces overall
dimension and eliminates external inter-wiring.