MVRL2100-4601-A Liquid Cooled Rectifier Module

Date: May 14, 2024 Views: 93

Introduction

The MVRL2100-4601-A is manufactured by Avid Controls under license from the General Electric  Company.

In an MV3000 DELTA drive system, rectifier modules shown below are used in network bridges to  convert an AC supply into a rectified, unsmoothed DC supply.

The rectifier module may be operated as a 12-pulse network bridge. This configuration is achieved by  connecting the DC positive outputs together through an inter-bridge transformer and one AC input  being phase-shifted in relation to the other by an external supply transformer.

Features

The rectifier module includes a circuit which is capable of pre-charging the transistor modules. This  circuit charges the DC link capacitors of the transistor modules via current limiting resistors in the  rectifier module.

Modules fit in the standard DELTA mounting frames.

Metal oxide varistors are included to absorb surge energy from the mains. Supply impedance is  necessary for this to function correctly.

Protection against DC link short circuits is with 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.

Interfaces

Signals between the controller and rectifier module are by individual wires.

The AC and DC power connections have stud terminals and are designed for cable connection.

External Requirements

For parallel operation of rectifier modules, external sharing reactors must be fitted;

Similarly, for parallel operation of the two six-pulse rectifiers within a MVRL2100-4601 module,  external sharing reactors must be fitted;

For 12-pulse operation, the two supplies must be phase shifted by 30° to each other, and be of balanced  voltage. The DC output must be through an inter-bridge transformer;

Protection of the main input rectifier devices is by the addition of external semi-conductor fuses. For recommended fuses, see FUSES section. The AC and DC terminals on the modules are not suitable to support the weight of any attached cables. These cables must have additional mechanical support;

These liquid cooled modules must be cooled by an externally derived cooling system.

Electrical Connections

Power Connections

The AC and DC terminals on the modules are not suitable to support the weight of any attached cables. These cables must have additional mechanical support.

The bending radii limits of all cables must be respected.

AC and DC Power connections are based on High Temperature Cable, e.g. Von Roll Isola silicone  rubber type SIWO-KUL or equivalent.

AC Terminals

All AC power terminals are located on the front of the module and are marked R1, S1, T1 and R2, S2, T2.

Each terminal provides two M10 studs which are suitable for ring-crimp connection.

Maximum 2 x 150mm2  cable per phase. 

DC Terminals

The DC terminals are located on the lower right-hand side of the module.

Each DC positive connection, marked RECT1 + and RECT2 +, have two M10 studs.

The DC negative connection, marked RECT1/2 -, has four M10 studs.

Maximum 150mm2  cable per connection.

Control Connections

The rectifier control terminals are mounted at the top of the front face of the Rectifier module as  below. The customer terminals are the left half of a 10-pin plug and socket, referenced TB1, and may  be unplugged for ease of wiring.

Terminals will accept up to 2.5 mm2 (12 AWG) flexible cables. To prevent failure of the Rectifier module pre-charge components, the rectifier pre-charge acknowledge signal (TB1/9) must be connected to the control module. If this signal is not healthy the control module will not allow the drive to run.

Fusing

Fuse selection depends on many external factors, including the current/time loading conditions, number of starts per hour/day etc., fuse cooling, ambient temperature, continuous running or  intermittent running and fuse connection/mounting arrangements.

The fuse information detailed here, is intended to provide a basic fusing arrangement for a single unit operating at rated current and voltage with an overload occurring for 60s once every 10 minutes and  one stop/start per day.

Coolant

Coolant must be compatible with materials used within the products and must provide suitable inhibitors against corrosion and freezing where applicable. Recommended coolant type is an Ethylene Glycol/Water mix.

Coolant flow rate of 25 liters/minute (6.6 US Gallons/minute) required, with a maximum coolant inlet  temperature of 60°C (140°F). Maximum working pressure is 3 bar (0.3 MPa/43 psi).

For details of the coolant system arrangements, refer to T1693, MV DELTA Liquid Cooled Drive  System.

Product recommendation:

MVUA11B1BD0784B

MVTT14B1BA0773C

MVR1600-4601

MVAX31C1DF0754A

MVAX12B1DA0753A

MVAJ53H1LB0856A

MVAJ23B1AB0757B

MVAJ13D1GB0780A

MVAA14B1AA0785C

MS90376-12Y

MMI301 0286A3575

MIVII1000E00HI00

More……

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