DC Power Systems & Inverters

GE BDFB/BDCBB 6 load

The GE Battery Distribution Fuse Bay (BDFB) or Battery Distribution Circuit Breaker Bay (BDCBB) serves as a secondary power distribution unit for -48V DC power from the battery plant to the load equipment. The H569-445 family of products is versatile with fuse and circuit breaker options, internal or external DC return bars, 800A, 28-position panels and a VIM1EC smart meter to monitor voltage and current of each load bus.

Cabinet Options

The cabinet for the BDFB / BDCBB is 7ft, seismic zone 4 rated, with up to six 28-position distribution panels. Each panel may be individually fed with an 800A load bus or multiple panels may be joined together. Load bus assemblies include a 1500A shunt and landings for four 750kcmil cables. Factory supplied shunt wiring to each panel allows cabinets to be transitioned into different load configurations in minutes for maximum flexibility. 1, 2 and 4 ½ foot tall cabinet extensions are available for various cable rack heights.

Fuse / Circuit
Breaker Panels

Distribution panels have 28 bullet-style positions that accept either TPS or TPL fuses up to 125A or circuit breakers up to 250A. Any fuse or circuit breaker may be installed in any position with no spacing requirements. Each panel includes its own alarm lights for power loss and fuse/breaker alarms. Hinged doors on each panel provide circuit breaker and fuse protection and prevent incorrect installation.

VIM1EC Intelligent Meter

The VIM1EC smart meter monitors voltage and current of each load center with individually configured overload thresholds, power loss and fuse/breaker alarms. Form-C relays for each of the three alarms are accessed via terminal blocks located at the top of the cabinet. The VIM1EC receives redundant power from Load A and B buses as well as an optional external Auxiliary Battery Supply (ABS) connection.

A remote monitoring capability through a Millennium 2 or Pulsar Plus controller is now a standard feature of the VIM1EC meter. Alternatively, an in-bay Network Interface card (bay configured with G274) is available where monitoring has to be done independently of a GE plant controller. Kits to upgrade H569445 BDCBBs to the new VIM1EC, or to add the Network Interface card to existing bays are available.

Advantages

  • Telecom central office and MTSO applications
  • 800 amp load centers – from one to six panels with a capacity up to 4800 amps per cabinet
  • Digital meter interface with remote access
  • No spacing restrictions on fuse and circuit breaker protectors

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