Basler Electric Company

Bitrode Corporation

Richard A Freeman

Timothy M Wilkerson

David C Massey

Sidney B Harden

Thomas E Curry

Richard G Casebolt

A method and system is provided for calibrating a plurality of electrical circuits used to charge and test a plurality of battery cells. An improved cell rack module includes at least one movable platen having a plurality of pin assemblies removably secured thereto. The movable platen is slidably movable within the cell rack module between an extended position or a retracted position. Extension mechanisms are used to force the movable platen into the extended position during calibration, charging and testing procedures, and retraction mechanisms return the platen to the retracted position when the extension mechanisms are not actuated. When the movable platen is in the extended position, the pin assemblies are maintained in electrical contact with either the battery cells associated with a conventional cell tray or contact plates associated with a calibration tray. In this situation, the pin assemblies allow for current and voltage signal transmission between charging and testing circuitry and the battery cells or contact plates. Each pin assembly can be quickly and easily disconnected from the movable platen and replaced if it becomes damaged or worn out. Each calibration tray includes control circuitry that is electrically connected to the charging and testing circuitry via certain pin assemblies. The control circuitry allows for selective application of one or more known calibration standards across the contact plates during the calibration procedures.

Method and system for battery charging and testing with semi-automatic

An apparatus for protecting an electrical power system supplying electrical power to an electrical load comprises a transformer for sensing an operating condition of the electrical power system and for producing an analog signal representative of the operating condition, and a microcomputer for periodically sampling the analog signal and for converting the analog signal into a series of digital signals. The microcomputer includes circuitry for deriving a digital value representative of a square root of the series of digital signals and circuitry for processing the digital value over time to determine a processed value which is a function of both the sensed operating condition and time. A circuit breaker is responsive to the microcomputer for disconnecting the power system from the load in the event that the processed value is not within preset limits. The microcomputer also generates a relay signal representative of the status of the relay and the relay includes an output port responsive to the relay signal, for communicating the status of the relay to a remote station.

Overcurrent protection relay with communications

A regulator provides a control signal for controlling a generator which is providing an electrical output. The electrical output includes an output voltage and an output current applied to a load. The regulator comprises a microprocessor, voltage sensing inputs and current sensing inputs which cooperate with the microprocessor to sense a parameter of the electrical output applied to the load and a first memory for storing predetermined parameters. The microprocessor compares the sensed parameter to its corresponding predetermined parameter stored in the first memory and generates an output signal representative of the comparison. The regulator further comprises a second memory for storing instructions for controlling operation of the microprocessor and generates the control signal as a function of the output signal from the microprocessor.

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St. Louis, MO, United States of America

Richard A Freeman