Guardian 5U / 6U / MS31 / 8 POS

48V 50A ~ 480A DC Power System

Description

Guardian Access 19 are 5RU or 6RU high 19” rack-mounted, integrated DC power systems providing an output of -48VDC. These systems can accommodate up to four (5U) or eight (6U) Guardian family high efficiency hot-swap rectifiers. A load current of 400A is available with battery charge current up to 125A subject to an overall 434A. The rectifiers are internally fan cooled with speed control which is a function of load and temperature, keeping acoustic noise to a minimum. 

The DC output circuits can provide up to 21 loads which utilize circuit breakers rated from 2A to 63A plus up to six 100A or 125A breakers that provide battery protection. A programmable 400A low voltage battery disconnect (LVD) is standard while one or two partial load disconnects (PLD), rated at 125A or 200A and also programmable, can provide non-critical load shedding when operating on batteries. 

The ACC Extended remote access controller monitors system parameters, controls rectifier output, and provides alarms for system failures. The Controller Module is also pluggable for easy field replacement in case of failure. There are 2 LED alarm indicators which indicate failures, (RED) Alarm and (YELLOW) Message. A third green LED indicates the controller is working properly.

As standard four form-C relay outputs provide the alarms for remote use. An additional 6 can be included as an option. Two digital inputs and outputs are also provided as well as a microSD card slot that accepts an up to 4GB card which is sufficient for more than 20 years data logging. The system can be programmed by means of a remote PC web page display. Communication is by Ethernet LAN with SNMPv3 including alarm trapping. It also has provision for temperature compensated charging of an external battery using a supplied TC probe. An LCD Display/Touchpad is included for local metering, status, and setup

Key Features

• >96% Efficiency Rectifiers
  
• 400A / 21.4kW Load Capacity
• Remote Monitoring & Control
  
• Field Replaceable Controller
  
• Ethernet Comm. with SNMPv3
  
• 3 LED Alarm/Status Indicators
  
• Up to 10 Form-C Relay Alarms
  
• Up to 21 Load Breakers
  
• Up to 6 Battery Breakers
  
• LCD Display/Touchpad
  
• Easy Installation