American Power Conversion MX06 100, MX06 50 user manual Technical Description, Rectifier Management

4 Technical Description

The various MX06 models are modular stand-alone –48 V dc power plants. Each can be configured to support most typical applications within their specified current capacity without special application engineering or assistance. Output distribution is provided through the use of up to 12 plug-in GMT-type fuses per shelf or up to two circuit breakers per shelf. A control port is also available to operate an optional motorized circuit breaker designed to provide battery cable protection and low voltage disconnect (LVD) for a battery string(s).

4.1. Rectifier Management

AC Input Power

The basic component of the power system is the rectifier module, which rectifies utility AC into nominal 48 Volts DC. Each rectifier module requires 90/115/208/220/240 Volt AC single-phase, 50/60 Hz. Available cord sets include a variety of blade and twist lock plugs. Dedicated wiring inside conduit can also be used.

DC Output Power

The DC outputs of all the rectifiers in the system are connected to a common bus that is rated to carry the current of the entire system. The rectifier modules will equally share the entire load, independent of the controller. The rectifiers will continue to provide DC power if the controller is removed or fails.

System Output Capacity

The power plant has two basic configurations:

The MX06 50 power plant supplies a maximum of 52.5 amps or 42 amps with N+1 redundancy. The housing for this configuration provides one rectifier shelf with integrated DC output distribution, and controller.

The MX06-100 power plant supplies a maximum of 105 amps or 94.5 amps with N+1 redundancy. The housing for this configuration provides two rectifier shelves with integrated DC output distribution, and controller.

Rectifier alarms reporting

The rectifier has numerous sensors inside the unit that monitor AC fail, low voltage, etc. These rectifier sensors trigger outputs that are monitored by the controller. The controller can trigger output relays in the event of a rectifier alarm.

MX06 Power Plant User’s Manual Page 17