Abstract: A cryogenic storage system includes a transfer module configured to service one or more cryogenic storage freezers. The transfer module includes a working chamber that maintains a cryogenic environment for the transfer of sample tubes between different sample boxes. One or more freezer ports enable the transfer module to receive a sample box extracted from a respective freezer. An input/output (I/O) port enables external access to samples. A box transport robot operates to transport sample boxes between the freezer ports, the working chamber, and the I/O port. A picker robot operates to transfer sample tubes between sample boxes within the working chamber.

Abstract: A cryogenic storage system includes a transfer module configured to service one or more cryogenic storage freezers. The transfer module includes a working chamber that maintains a cryogenic environment for the transfer of sample tubes between different sample boxes. One or more freezer ports enable the transfer module to receive a sample box extracted from a respective freezer. An input/output (I/O) port enables external access to samples. A box transport robot operates to transport sample boxes between the freezer ports, the working chamber, and the I/O port. A picker robot operates to transfer sample tubes between sample boxes within the working chamber.

Abstract: An automated cryogenic storage system includes a freezer and an automation system to provide automated transfer of samples to and from the freezer. The freezer includes a bearing and a drive shaft though the freezer, the drive shaft being coupled to a rack carrier inside the freezer and adapted to be coupled to a motor. The automation module includes a rack puller that is automatically positioned above an access port of the freezer. The rack puller engages with a sample rack within the freezer, and elevates the rack into an insulating sleeve external to the freezer. From the insulating sleeve, samples can be added to and removed from the sample rack before it is returned to the freezer.

Abstract: An automated cryogenic storage system includes a freezer and an automation system to provide automated transfer of samples to and from the freezer. The freezer includes a bearing and a drive shaft though the freezer, the drive shaft being coupled to a rack carrier inside the freezer and adapted to be coupled to a motor. The automation module includes a rack puller that is automatically positioned above an access port of the freezer. The rack puller engages with a sample rack within the freezer, and elevates the rack into an insulating sleeve external to the freezer. From the insulating sleeve, samples can be added to and removed from the sample rack before it is returned to the freezer.

Abstract: Mounting hardware is installed to a cryogenic storage device to accommodate an automation system for automated storage and retrieval. A guideplate at an upper surface of a cover of the cryogenic storage device is positioned such that the guideplate is aligned in a predefined relation to an access port at the upper surface. One or more mounting posts are affixed at a location as indicated by the guideplate. A vacuum is then pulled within the cover, and the mounting hardware is affixed to the at least one mounting post.

Abstract: A ground fault locating method for a power distribution network includes: monitoring each phase line of three phase distribution lines, and in the event of occurrence of waves with fault features, performing wave recording to obtain phase line record files; combining the record files corresponding to each of the three phase lines to obtain fault record files; and synthesizing the fault record files to form a transient record file, determining a fault location according to a wave having a maximum change in wave amplitude between two points in the transient record file, and displaying the fault location in a wiring diagram. The ground fault locating method for a power distribution network can significantly improve accuracy of single-phase ground fault detection.

Abstract: An automated cryogenic storage system includes a freezer and an automation system to provide automated transfer of samples to and from the freezer. The freezer includes a bearing and a drive shaft though the freezer, the drive shaft being coupled to a rack carrier inside the freezer and adapted to be coupled to a motor. The automation module includes a rack puller that is automatically positioned above an access port of the freezer. The rack puller engages with a sample rack within the freezer, and elevates the rack into an insulating sleeve external to the freezer. From the insulating sleeve, samples can be added to and removed from the sample rack before it is returned to the freezer.

Abstract: An automated cryogenic storage system includes a freezer and an automation system to provide automated transfer of samples to and from the freezer. The freezer includes a bearing and a drive shaft though the freezer, the drive shaft being coupled to a rack carrier inside the freezer and adapted to be coupled to a motor. The automation module includes a rack puller that is automatically positioned above an access port of the freezer. The rack puller engages with a sample rack within the freezer, and elevates the rack into an insulating sleeve external to the freezer. From the insulating sleeve, samples can be added to and removed from the sample rack before it is returned to the freezer.

Abstract: A configurable cryogenic storage device has a freezer and a rack carrier positioned inside of the freezer. The freezer includes a bearing and a drive shaft though the freezer, the drive shaft being coupled to the rack carrier inside the freezer and adapted to be coupled to a motor assembly. The rack carrier rests on the bearing in a manual rotation configuration and hangs from the drive shaft when the motor is connected. Coupling the drive shaft to the motor assembly lifts the rack carrier and decouples the bearing and enables automated rotation of the rack carrier by the motor. The rack carrier includes rack-mounting features holding a plurality of sample storage racks. The sample storage racks hang from the rack carrier and the rack-mounting features precisely position the end of each sample storage rack.

Abstract: A ground fault locating method for a power distribution network includes: monitoring each phase line of three phase distribution lines, and in the event of occurrence of waves with fault features, performing wave recording to obtain phase line record files; combining the record files corresponding to each of the three phase lines to obtain fault record files; and synthesizing the fault record files to form a transient record file, determining a fault location according to a wave having a maximum change in wave amplitude between two points in the transient record file, and displaying the fault location in a wiring diagram. The ground fault locating method for a power distribution network can significantly improve accuracy of single-phase ground fault detection.

Abstract: A cryogenic storage system includes a transfer module configured to service one or more cryogenic storage freezers. The transfer module includes a working chamber that maintains a cryogenic environment for the transfer of sample tubes between different sample boxes. One or more freezer ports enable the transfer module to receive a sample box extracted from a respective freezer. An input/output (I/O) port enables external access to samples. A box transport robot operates to transport sample boxes between the freezer ports, the working chamber, and the I/O port. A picker robot operates to transfer sample tubes between sample boxes within the working chamber.

Abstract: A configurable cryogenic storage device has a freezer and a rack carrier positioned inside of the freezer. The freezer includes a bearing and a drive shaft though the freezer, the drive shaft being coupled to the rack carrier inside the freezer and adapted to be coupled to a motor assembly. The rack carrier rests on the bearing in a manual rotation configuration and hangs from the drive shaft when the motor is connected. Coupling the drive shaft to the motor assembly lifts the rack carrier and decouples the bearing and enables automated rotation of the rack carrier by the motor. The rack carrier includes rack-mounting features holding a plurality of sample storage racks. The sample storage racks hang from the rack carrier and the rack-mounting features precisely position the end of each sample storage rack.

Abstract: An automated cryogenic storage system includes a freezer and an automation system to provide automated transfer of samples to and from the freezer. The freezer includes a bearing and a drive shaft though the freezer, the drive shaft being coupled to a rack carrier inside the freezer and adapted to be coupled to a motor. The automation module includes a rack puller that is automatically positioned above an access port of the freezer. The rack puller engages with a sample rack within the freezer, and elevates the rack into an insulating sleeve external to the freezer. From the insulating sleeve, samples can be added to and removed from the sample rack before it is returned to the freezer.

Abstract: An automated cryogenic storage system includes a freezer and an automation system to provide automated transfer of samples to and from the freezer. The freezer includes a bearing and a drive shaft though the freezer, the drive shaft being coupled to a rack carrier inside the freezer and adapted to be coupled to a motor. The automation module includes a rack puller that is automatically positioned above an access port of the freezer. The rack puller engages with a sample rack within the freezer, and elevates the rack into an insulating sleeve external to the freezer. From the insulating sleeve, samples can be added to and removed from the sample rack before it is returned to the freezer.

Abstract: An automated cryogenic storage system includes a freezer and an automation system to provide automated transfer of samples to and from the freezer. The freezer includes a bearing and a drive shaft though the freezer, the drive shaft being coupled to a rack carrier inside the freezer and adapted to be coupled to a motor. The automation module includes a rack puller that is automatically positioned above an access port of the freezer. The rack puller engages with a sample rack within the freezer, and elevates the rack into an insulating sleeve external to the freezer. From the insulating sleeve, samples can be added to and removed from the sample rack before it is returned to the freezer.

Abstract: A configurable cryogenic storage device has a freezer and a rack carrier positioned inside of the freezer. The freezer includes a bearing and a drive shaft though the freezer, the drive shaft being coupled to the rack carrier inside the freezer and adapted to be coupled to a motor assembly. The rack carrier rests on the bearing in a manual rotation configuration and hangs from the drive shaft when the motor is connected. Coupling the drive shaft to the motor assembly lifts the rack carrier and decouples the bearing and enables automated rotation of the rack carrier by the motor. The rack carrier includes rack-mounting features holding a plurality of sample storage racks. The sample storage racks hang from the rack carrier and the rack-mounting features precisely position the end of each sample storage rack.