Abstract: A secondary cell degradation state judgment system which includes: operation information measurement means (5) measuring operations information on a secondary cell (3) such as a temperature, an elapse time, a discharge depth, and a discharge capacitance of the secondary cell; degradation value calculation means (7) which calculates degradation values (15) respectively corresponding to the measurement values according to the measurement values; degradation accumulation value storage means (8) which stores degradation accumulation values (14) accumulated for each of the calculated degradation values; main accumulation value selection means (9) which selects the greatest degradation value as a main accumulation value (16) from the degradation accumulation values; and overall degradation value calculation means (10) which calculates an overall degradation value (18) according to the selected main accumulation value and a degradation value corresponding to the degradation accumulation values which have not been se

Abstract: A secondary cell degradation state judgment system which includes: operation information measurement means (5) measuring operations information on a secondary cell (3) such as a temperature, an elapse time, a discharge depth, and a discharge capacitance of the secondary cell; degradation value calculation means (7) which calculates degradation values (15) respectively corresponding to the measurement values according to the measurement values; degradation accumulation value storage means (8) which stores degradation accumulation values (14) accumulated for each of the calculated degradation values; main accumulation value selection means (9) which selects the greatest degradation value as a main accumulation value (16) from the degradation accumulation values; and overall degradation value calculation means (10) which calculates an overall degradation value (18) according to the selected main accumulation value and a degradation value corresponding to the degradation accumulation values which have not been se

Abstract: An object of the present invention is to provide a power supply device that permits high efficiency and miniaturization, that makes the constitution of a power supply device advantageous from a cost perspective and an assembly work standpoint, and that also allows the cooling fan to be changed rapidly. A protective member H is mounted so as to be displaceable to a removal disabling position in which the protective member H obstructs the removal of the cooling fan F by abutting against the cooling fan F, and to a removal enabling position that permits removal of the cooling fan F. Stopper members, which serve to obstruct movement of the protective member H to the removal disabling position by abutting against the protective member H in a state where the cooling fan F is not disposed in a predetermined position, are provided.

Abstract: An object of the present invention is to provide a power supply device that permits high efficiency and miniaturization, that makes the constitution of a power supply device advantageous from a cost perspective and an assembly work standpoint, and that also allows the cooling fan to be changed rapidly. A protective member H is mounted so as to be displaceable to a removal disabling position in which the protective member H obstructs the removal of the cooling fan F by abutting against the cooling fan F, and to a removal enabling position that permits removal of the cooling fan F. Stopper members, which serve to obstruct movement of the protective member H to the removal disabling position by abutting against the protective member H in a state where the cooling fan F is not disposed in a predetermined position, are provided.

Abstract: It is an object of the present invention to provide an uninterruptible duplexed power supply system that is highly reliable and has excellent durability, with which a more compact size and higher efficiency are both achieved, and with which a malfunction of the power supply circuit can be repaired in a live state. The present invention is characterized in that there are provided a first unit 4 and a second unit 6 having their own power supplies 1, a main component 10 to which the outputs of the first unit 4 and second unit 6 are inputted is equipped with a secondary DC output circuit 8 and a battery-side converter circuit 13, the first unit 4 and the second unit 6 can be attached to and detached from the main component 10 in a live state.

Abstract: It is an object of the present invention to provide an uninterruptible duplexed power supply system that is highly reliable and has excellent durability, with which a more compact size and higher efficiency are both achieved, and with which a malfunction of the power supply circuit can be repaired in a live state. The present invention is characterized in that there are provided a first unit 4 and a second unit 6 having their own power supplies 1, a main component 10 to which the outputs of the first unit 4 and second unit 6 are inputted is equipped with a secondary DC output circuit 8 and a battery-side converter circuit 13, the first unit 4 and the second unit 6 can be attached to and detached from the main component 10 in a live state.