CELL: BATTERY,NICAD,CVH250KA,

The 257CH-9 Saft nickel-cadmium battery consists of a box (020), containing 20 individual cells CVH250KA. These cells are connected in series to obtain 24 V nominal. Individual cells are enclosed in a polyamide container that provides insulation, allowing them to be fitted side-by-side in the battery box. Interconnection of cells is via rigid, highly conductive, nickel-plated copper links (180 to 240). Each link is held in place by nickel-plated copper nuts (130) on the cells’ terminals. Inside the battery box, individual cells are held in place by partitions, liners and spacers (040), and a cover (030). The terminals (050) connects the battery to the aircraft DC power. The cover (030), which can be removed, is attached to the box (020) by 4 latches.

*NOTE: ALL NICAD BATTERIES ARE UNCHARGED*

Features

The batteries are connected to the aircraft system:

• According to the aircraft manufacturer, to start the engine or the APU.
• On the ground, to provide power before electrical power is supplied to the aircraft systems.
• In flight, if a malfunction or a failure occurs in the power supply system.
  • Type of cells : CVH250KA
  • Number of cells : 20
  • Nominal voltage : 24 V
  • Rated capacity C1Ah (Ah) : 25 Ah
  • Charge or discharge current 1 C1A : 25A
  • Charge current 0.5 C1A : 12.5 A
  • Charge current 0.1 C1A : 2.5A
  • Electrolyte : Solution of KOH
  • Electrolyte level (mm) : 20 mm (0.79 in)
  • Consumable volume of electrolyte per cell : 40 cm3 (2.44 in3)
  • End of charge voltage : 1.55 V / per cell
  • End of life criterion in % : 100%
  • End of life criteria in hour or minutes : 1 hour
  • Battery maximum weight : 23.04 kg (50.8 lbs)
  • Battery terminals : Connector according to ISO5064/11 or MS3509

Benefits

• The battery is charged on the aircraft by an on-board charger.
• The charge control thermistor provides a signal to the charger to compensate the charge according to the battery temperature.
• The thermostat will cut off the charger if the battery temperature exceeds a safe operating limit.
• The battery plates store electrical power supplied by a charging source, and supply power when the battery is connected to a load circuit, i.e. when it discharges.

Aircraft Applicability

• Candair( Bombardier) : BD7 00 1A10, BD 700 1A11, BD 700 1A12
• Bombardier : Global Express GL511-2201-1, BX00101-01, BA34-01

Related Products

ATA 300 Spec Shipping Container :

• BTA-M4-20

For more information on the battery parts, please see below an illustrated Parts List with data of components. Click on the parts to buy them separately