Specification T1689 Technical Manual Rev 07
DELTA Rectifier Module MV3000 Air Cooled DELTA
Page 40
2.9.2 DELTA Rectifier Type GDR
Figure 2–9. – DELTA Rectifier Module (GDR872-4601)
2.9.2.1 Features
• The rectifier module includes a circuit, which is capable of pre-charging the transistor modules.
This circuit charges the d.c. link capacitors of the transistor modules via current limiting resistors
in the rectifier module;
• Modules fit in the standard DELTA mounting frames and are configured for ‘dirty air’ applications;
• RC network included to absorb surge energy from the mains. Supply impedance is necessary for
this to function correctly;
• Protection against d.c. link short circuits is by the use of recommended semi-conductor fuses;
• Modules carry thermostat and thermistor temperature sensing devices, which are monitored by
the MV3000e controller to provide over-temperature protection.
2.9.2.2 Interfaces
• Signals between the controller and rectifier module are by individual wires;
• The a.c. and d.c. power connections have stud or insert connections (type dependant) and are
designed for cable connection, however maximum sizes for busbar connections to d.c. terminals
are provided in this manual.
NOTE: Short busbars are available that connect to the a.c. rectifier terminals which enable the connection point to
be below the DELTA cross rails. These may be supplied in either a kit of parts or as a separate item. See
Section 2.9.2.15 – Cubicle busbars for Rectifier Modules.
Lifting point 20 mm (0.75”)
diameter
TB1 – Control connections
R – a.c. phase connection
S – a.c. phase connection
T – a.c. phase connection
RECT + : d.c. positive
connection
RECT - : d.c. negative
connection
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