Megger BITE 2 Battery Impedance Test Equipment

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The BITE 2 Battery Impedance Test Equipment determines the condition of lead-acid and nickel-cadmium cells up to 7000 Ah. An advanced feature set has been developed that includes Pass/Warning/ Fail calculations based on a user-entered baseline value, advanced printing functions and more. The BITE 2 and its accessories fit into a sturdy canvas case with a shoulder strap. The instruments work by applying a test signal across the battery string while on-line, then calculates impedance based on simultaneous measurements of current and resulting voltage drop of each cell/jar.

They also measure dc voltage and interconnection (strap) resistance to help determine the overall condition of the entire battery string’s electrical path from terminal plate to terminal plate. In addition, the BITE 2 measures ac ripple current which, if too high and over an extended period of time, can damage the battery by heating it. (An increase of battery temperature by 18ºF/10ºC will halve the life of lead- acid batteries.) Battery manufacturers generally recommend a limit of 5A of ac ripple current for every 100 Ah of battery capacity. The first measurement that the instruments take is ac ripple current which should be trended.

Features:


  • Measures impedance and dc voltage values for all lead-acid and nickel-cadmium cells up to 7000 Ah
  • Calculates impedance automatically and stores results for on-site review
  • Reduced test time: less than 15 seconds for each cell
  • Stores more than 2000 sets of readings in up to 300 tests


Applications:


  • Cell replacement criteria based on impedance trends
  • Electrical power generation plants
  • Substations: utility, railroad, industrial
  • Telecommunications facilities: CO, Wireline, Wireless, MTSO
  • Railroad: Signals and Communications, substation