Other

Javad Gnss, Inc.

Vladimir Anatolievich Zhukov

Dmitry Dubrovsky

Alexander Andreevich Vyazov

Valery Mihailovich Pupin

Victor Petrusinski

A method and device for automatic activation of a backup supply is provided that measures the positive-phase-sequence voltage of the busbars in a backup power source, the linear voltages at the busbars in the primary power source and the angle between the vectors of the positive-phase-sequence voltages of the busbars in both power sources. The method and device also measures the value of the rms current in a phase and the value of the angle between the vector of the complex rms current in the same phase and of the vectorial sum of the complex rms voltage between the two other phases at the busbars in the primary power source and the received portion. The power supply to the busbars is switched from the primary source to the backup source in the event of any of the above-mentioned magnitudes departing from the range of permissible values for these magnitudes.

Method and device for the high-speed automatic activation of a backup consumer electrical power supply

A portable DGPS navigation apparatus is provided. The apparatus includes a receiver assembly and a DGPS antenna assembly. The receiver assembly includes a GNSS antenna, a GNSS receiver, and a DGPS modem. The DGPS antenna assembly includes a DGPS antenna; a top connector for coupling the DGPS antenna assembly to the receiver assembly such that the receiver assembly and DGPS antenna assembly are aligned with a geodetic pole, and a bottom connecter.

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Moscow, Russia

Vladimir Anatolievich Zhukov