Abstract: A maintenance bypass (MBP) system for an uninterruptible power supply (UPS) includes a first switch having at least three positions that provide different couplings of a power source, a load, a power input of a UPS and a power output of a UPS and including a first contact set configured to indicate at least one transition between positions of the at least three positions. The system further includes a second switch configured to enable transition of the first switch between at least two of the positions and including a second contact set configured to indicate actuation of the second switch. The first switch may include a rotary switch and the second switch may include a pushbutton switch.

Abstract: Uninterruptible power supplies (UPSs) are provided including a processor and a voltage sensor circuit in communication with the processor. The voltage sensor circuit is configured to sense a center point voltage (CPV) of a battery module associated with the UPS and provide the sensed CPV to the processor. The processor is configured to receive the sensed CPV of the battery module, determine if the CPV is less than a predetermined voltage and turn off all battery chargers associated with the battery module if the CPV is determined to be less than the predetermined voltage.

Abstract: A maintenance bypass (MBP) system for an uninterruptible power supply (UPS) includes a first switch having at least three positions that provide different couplings of a power source, a load, a power input of a UPS and a power output of a UPS and including a first contact set configured to indicate at least one transition between positions of the at least three positions. The system further includes a second switch configured to enable transition of the first switch between at least two of the positions and including a second contact set configured to indicate actuation of the second switch. The first switch may include a rotary switch and the second switch may include a pushbutton switch.

Abstract: A battery module is provided including a battery module connector configured to engage with a backplane connector on a backplane board associated with an uninterruptible power supply (UPS). When the battery module connector is engaged with the backplane connector a circuit is completed that instantaneously indicates to the UPS that the battery module is connected. When the battery module connector is disengaged from the backplane connector the circuit is opened and instantaneously indicates to the UPS that the battery module is disconnected.

Abstract: A battery module is provided including a battery module connector configured to engage with a backplane connector on a backplane board associated with an uninterruptible power supply (UPS). When the battery module connector is engaged with the backplane connector a circuit is completed that instantaneously indicates to the UPS that the battery module is connected. When the battery module connector is disengaged from the backplane connector the circuit is opened and instantaneously indicates to the UPS that the battery module is disconnected.

Abstract: A maintenance bypass (MBP) system for an uninterruptible power supply (UPS) includes a first switch having at least three positions that provide different couplings of a power source, a load, a power input of a UPS and a power output of a UPS and including a first contact set configured to indicate at least one transition between positions of the at least three positions. The system further includes a second switch configured to enable transition of the first switch between at least two of the positions and including a second contact set configured to indicate actuation of the second switch. The first switch may include a rotary switch and the second switch may include a pushbutton switch.

Abstract: A battery module is provided including a battery module connector configured to engage with a backplane connector on a backplane board associated with an uninterruptible power supply (UPS). When the battery module connector is engaged with the backplane connector a circuit is completed that instantaneously indicates to the UPS that the battery module is connected. When the battery module connector is disengaged from the backplane connector the circuit is opened and instantaneously indicates to the UPS that the battery module is disconnected.

Abstract: A maintenance bypass (MBP) system for an uninterruptible power supply (UPS) includes a first switch having at least three positions that provide different couplings of a power source, a load, a power input of a UPS and a power output of a UPS and including a first contact set configured to indicate at least one transition between positions of the at least three positions. The system further includes a second switch configured to enable transition of the first switch between at least two of the positions and including a second contact set configured to indicate actuation of the second switch. The first switch may include a rotary switch and the second switch may include a pushbutton switch.

Abstract: A battery module is provided including a battery module connector configured to engage with a backplane connector on a backplane board associated with an uninterruptible power supply (UPS). When the battery module connector is engaged with the backplane connector a circuit is completed that instantaneously indicates to the UPS that the battery module is connected. When the battery module connector is disengaged from the backplane connector the circuit is opened and instantaneously indicates to the UPS that the battery module is disconnected.

Abstract: Uninterruptible power supplies (UPSs) are provided including a processor and a voltage sensor circuit in communication with the processor. The voltage sensor circuit is configured to sense a center point voltage (CPV) of a battery module associated with the UPS and provide the sensed CPV to the processor. The processor is configured to receive the sensed CPV of the battery module, determine if the CPV is less than a predetermined voltage and turn off all battery chargers associated with the battery module if the CPV is determined to be less than the predetermined voltage.

Abstract: Embodiments of the present inventive concept provide an external battery module (EBM) including a communication server board (CSB) slot configured to receive a CSB, wherein the EBM operates regardless of whether the CSB is positioned in the CSB slot; and a battery charger slot configured to receive a battery charger, wherein the EBM operates regardless of whether the battery charger is positioned in the battery charger slot.

Abstract: Embodiments of the present inventive concept provide an external battery module (EBM) including a communication server board (CSB) slot configured to receive a CSB, wherein the EBM operates regardless of whether the CSB is positioned in the CSB slot; and a battery charger slot configured to receive a battery charger, wherein the EBM operates regardless of whether the battery charger is positioned in the battery charger slot.

Abstract: A battery module is provided including a battery module connector configured to engage with a backplane connector on a backplane board associated with an uninterruptible power supply (UPS). When the battery module connector is engaged with the backplane connector a circuit is completed that instantaneously indicates to the UPS that the battery module is connected. When the battery module connector is disengaged from the backplane connector the circuit is opened and instantaneously indicates to the UPS that the battery module is disconnected.