Emerson MPR25 Signal connector, Power interface edge connector, Features, Current limiting

Operation 25

Signal connector

This connector provides control and monitoring signal access to the rectifier. Refer to the “Signal Connections” section for connection details.

Power interface edge connector

The rectifier AC, DC and chassis ground interface is made through the rear edge connector. Refer to the “Rectifier and Controller Interface Connections” section for connection and installation details.

Features

The rectifier provides the following operating, monitoring, measurement and control features:

Operating features

Remote voltage sensing

Provision is made to extend the sensing leads to the battery or to the charge/discharge bus (operation without batteries) of the plant. The opening of either sensing leads will not result in a voltage increase at the rectifier output terminals.

Current limiting

The rectifier will automatically limit the output current to 17.5 to 20 A (MPR15) and 25.5 to 30 A (MPR25). Extended periods of operation in the current limiting mode, and repeated transitions between constant-voltage operation and constant-current operation have no detrimental effect on the performance or service life of the rectifier.

The rectifier is capable of starting when connected across a completely discharged battery without requiring human intervention or operating protection devices.

Transitions from constant-voltage operation to constant-current operation and from constant-current to constant-voltage operation will occur automatically, as determined by the output current. The current limit circuit will continue working in both the float and equalize modes.

Soft start and walk-in

The output current rises from 10% to 90% in 2 seconds (typically).

25A Switch Mode Rectifier NT5C06B / C Installation and User Manual