Rockwell Automation 7000L PowerFlex Medium Voltage AC Drive (C-Frame) - ForGe Control - Manual (Page 16)

16 Rockwell Automation Publication 7000L-UM301D-EN-P - June 2014
Chapter 1 Overview of Drive
Benefits of the 7000L “C” Frame Liquid-cooled Drive:
• 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 AFE rectifiers for low harmonic solutions that meet IEEE
519-1992 Harmonic Guidelines
• Motor friendly current and voltage output waveforms for use with
standard new and existing motors
–
Inverter duty motors not required
– Motor temperature derating not required
– No additional dv/dt or peak voltage stress to motor insulation system
– Tested up to 15 kilometers (9.3 miles) 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 (Direct-to-Drive or AFE rectifier)
– 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 interwiring.
• Integral pumping panel includes:
–
Line supply c/w disconnect and fusing
– Closed loop coolant system
– Iron and chloride free liquid ethyl-glycol / deionized water mixture
– Low conductivity coolant (1-2 micro-Siemens / cm
3
)
– Isolated from medium voltage
– Fully serviceable low voltage compartment isolated from medium
voltage power
– Monitors coolant temperature, flow, level, conductivity, and pressure
– Redundant pumping system (optional)
– Automatic pump change over on pump failure
– 1/2 turn valves with quick disconnect couplers for pump replacement
when drive is operating
– Full drip tray to contain any spilled coolant
– Drain and fill pump for convenient filling
– Industrial schedule 80 CPVC piping for pump panel, headers and
manifolds (no condensation possibility)
– Control hardware for cycling of main / redundant cooling pumps and
heat exchanger fans
• “Plug and play” Power Cage concept
– Central location for easy access to all main power components