A-box automatic reserve entry shields

Shields of automatic inclusion of reserve A-box.

Reception and distribution of three-phase alternating current with a frequency of 50 Hz, with automatic switching to the backup input in case of disconnection of the main input.

 

THE FEATURES OF A TECHNICAL SOLUTION

  • A compact solution for organizing reliable power supply to consumers of the 1st and 2nd reliability categories.
  • All current-carrying parts of the IDD are protected against direct contact by the operating and maintenance personnel.
  • Power supply input can be arranged from the top or bottom through busbars or cables.
  • Power supply output can also be arranged from the top or bottom through busbars or cables.
  • Busbar distribution is implemented using copper busbars.
  • Cabinets are installed on a cable tray or a baseboard and they are wall-mounted.
  • The cabinet door features a mnemonic diagram displaying the input voltage and the status of the switching devices (on/off). The cabinet's design ensures a convenient and safe connection of input and outgoing lines. The ATS cabinets are equipped with an electromagnetic scheme and mechanical interlocks.

 

ADVANTAGES OF OUR SOLUTION

Purpose: reception and distribution of three-phase alternating current with a frequency of 50 Hz with automatic switching to the backup input in case of disconnection of the main input.

The main functions are:

  • automatic switching to the backup power source;
  • network voltage monitoring;
  • protection of downstream equipment against overloads and short-circuit currents;
  • power supply for data centres, banks, hospitals, and residential and commercial buildings.

  

TECHNICAL FEATURES

The A-Box series automatic backup input cabinets are constructed using modular frame or fully welded metal structures with removable sides, top, rear walls, and doors. The metal structure of the frame and removable parts is coated with a powder-coated structural finish in RAL 7035 colour.

  • Nominal working voltage: 380/220 V
  • Nominal current: Up to 630 A
  • Nominal breaking capacity: Up to 50 kA
  • Nominal current of protective devices: Up to 100 A
  • Number of inputs: 1, 2, 3
  • Number of busbars: 1, 2, 3
  • Nominal frequency: 50 Hz
  • IP (Ingress Protection) rating according to IEC 60529: From IP31 to IP65
  • Earthing system: TN-C, TN-C-S, TN-S

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