Circuit breaker (battery) - DC circuit breaker that protects the battery of a UPS.(back)
Working Voltage - The typical voltage or range of voltage of a battery during discharge (also called operating voltage or running voltage).
Memory Effect - A phenomenon in which a cell or battery operated in successive cycles to the same, but less than full, depth of discharge temporarily loses the rest of its capacity at normal voltage levels.
Bobbin - A cylindrical cell design utilizing an internal cylindrical electrode, and an external electrode arranged as a sleeve inside the cell container.
Earthing system IT - Earthing system in which the neutral is isolated from the earth or connected to the earth via a high impedance and the various exposed conductive parts are connected to the earth via individual earthing circuits. An alarm must signal the appearance of a first insulation fault. The installation must be de-energized immediately in the event of a second insulation fault.
Cell - The basic electrochemical unit used to generate or store electrical energy.
Frequency Variation - A change in frequency of more than 3 Hz.