220VAC to 24VDC 60A 2U Rectifier System

1. General Description

1.1 Overview

The advanced modular design makes it a compact system and can provide enough power to meet the requirements of Communication and Power Industrial systems, consistent with the characteristics of rack-mounted systems.

This system can consist of one or multiple rectifier modules together with the monitor modules. The power of rectifier systems can vary, depending on the quantity of rectifier modules.

The rectifier system provides load power, battery float current, and battery-equalized current during normal operating conditions. This type of rectifier system is a constant power design, meaning within the normal operating ambient temperature range and input voltage range, available output power is constant. During those standard ranges, the rectifier system works automatically according to the load demands. If ambient temperature rises above or input voltage falls below acceptable values, the rectifier will continue to operate but at de-rated output power levels (please refer to the rectifier module working Voltage range).

For any initial output voltage setting 20~30VDC, output voltage remains constant, regardless of load. This is the normal operating condition, in which loads are being supplied and batteries are float charged. Rectifiers operate in the Constant Voltage Mode unless load increases exceeding the power rating of the system, which causes the rectifiers to operate in Constant Current mode (please refer to the output Capacity of the different rectifier module).

1.2  System Configuration

The system consists of distribution units, rectifier module (maximum of 4 sets) and a monitoring module. The configuration is optional, as shown on the following table:

Table 1-1 System Configuration

1.3 Operating Principle

Under normal conditions, every parameter of rectifier modules and distribution unit are all under control of the monitoring module, operating according to the pre-set parameter or user’s commands. If AC mains fails, the system will be powered by the battery. With the battery discharging, the terminal voltage of the battery starts to descend. When the voltage is under 21VDC±0.5V, the monitor reports DC under voltage alarm signal and cuts off the load output then the power system stops working. When the external AC mains recovers, the system will resume to the normal working state (All above monitoring data are system default values that the user can set).

Except for battery over-discharge protection, battery or load over-temperature protection is prohibited under default; the user can send command to activate or inactivate according to the demand. The operating temperature is 55℃ (Max) or more and power de-rating will be employed by system.

1.4 Model Description

The model description of the rectifier system is given in Figure 1-1.

 VOITA220 /24-60AS

220–AC Input Voltage

24–DC Output Voltage

60–DC Output Amps

1.5 Configuration

The power system is composed of rectifiers, a controller and a Sub rack. The structure of the power system is shown below.

The configuration of the power system is given in Table 1-1