Avid Technology MV3000 DELTA User Manual

T1689 Technical Manual Rev 07 Specification
MV3000 Air Cooled DELTA DELTA Transistor Module
Page 55
2.10.1 Features
• DELTA transistor modules use insulated-gate, bipolar transistors (IGBTs) to provide low distortion
output;
• Wide range of optional features can be configured;
• Modules fit in the standard DELTA mounting frames and are configured for dirty air applications;
• Smoothing capacitors provide filtering for the drive d.c. link, in addition to local energy storage
for IGBT switching;
• Output protection against short circuits;
• Auxiliary d.c. link connection plug for connection to the SMPS. The SMPS unit is mounted on the
transistor module;
• Each module includes thermistor protection. When connected to the MV3000e controller the
module is protected against excessive temperature;
2.10.2 Interfaces
• Signals between the controller and transistor module are by a single 40 way, ribbon cable per
module. This cable also carries the supplies for the electronics in the controller;
• An SMPS unit is connected to the transistor module with a 40 way, ribbon cable and a 2 pin, d.c.
connection;
• The a.c. and d.c. power connections have stud terminals and are designed for cable connection,
however maximum sizes for busbar connections to d.c. terminals are provided in this manual.
2.10.3 External Requirements
• Transistor modules contain smoothing capacitors, which when used in both network and
machine bridge applications, must be ‘pre-charged’. These modules do not have inbuilt pre-
charge circuits. Pre-charge is either via a DELTA rectifier module or external circuitry. Refer to
Section 3: Drive (CDM) Design for external pre-charge guidance;
• The d.c. supply to the transistor module must be within appropriate voltage, current and ripple
limits, and must be ‘pre-charged’;
• The a.c. and d.c. terminals on the modules are not suitable to support the weight of any attached
cables. These cables must have additional mechanical support;
• When transistor modules are used as network bridges, it is recommended that semi-conductor
fuses are fitted on the a.c. supply on a per module basis.
• These modules must be force ventilated to achieve the specified performance levels.
2.10.4 A.C. Phase Current Ratings
The a.c. phase current ratings, detailed in Table 2–25are limited by the system design. The cooling system,
number of parallel DELTA transistor modules, plus type and configuration of controller, will limit the system
rating. It is NOT possible to achieve these absolute ratings under all operating conditions. Most combinations
of ambient temperature, supply voltage, and switching frequencies will result in a reduced rating. Refer to GE
Power Conversion for specific ratings for different configurations.
Conditions
Peak instantaneous
current
Continuous a.c.
rms current
allowing for a 1.5 x
overload
Continuous a.c.
rms current
allowing for a 1.1 x
overload
MVD300-3702
636 A
300 A
400 A
MVD300-4602
636 A
300 A
400 A
MVD500-4501
778 A
367 A
500 A
MVD500-4701
778 A
367 A
500 A
Table 2–25. – Absolute Maximum a.c. Phase Current Ratings (network or machine mode)

Avid Technology MV3000 DELTA Specifications

General

Brand	Avid Technology
Model	MV3000 DELTA
Category	Control Unit
Language	English