Abstract:
Apparatus for performing automatic control of carrier systems which apparatus consists of solid-state circuitry utilizing no moving parts and which performs program timed operations as between a master transmitting and receiving carrier system and one or more remotely disposed transmitting and receiving carrier units. The apparatus consists of a time base generator which can provide a selected sequence of outputs for application to control an adjustable program matrix through a series of carrier control functions. Outputs from the programmable matrix are then applied to selected components of the carrier system to effect the desired control functions at the proper times.
Abstract:
A solid state programmable switch apparatus for producing random and sequential output pulses for control applications. The apparatus consists of timing circuitry for providing either monostable or astable trigger output to sequentially drive a decimal counter device. Buffer circuitry provides high voltage decimal inputs to randomly drive the decimal counter and to enterface output pulses to each of a plurality of respective inputs to a programmable memory module. The memory module is programmable through pin plug interconnection to provide the desired output as desired to a plurality of respective output amplifier and control circuits.
Abstract:
Apparatus for periodic testing of multiple-terminal, remote trip, dual transfer trip relaying systems. The apparatus consists of periodically actuatable test units which provide a plurality of program outputs to effect transmission tests of transfer trip channels as well as proper operation of the associated relay equipment. A master test unit located at a first position initiates operation and functions with one or more slaved remote test units to key transmissions and verify reception at the transfer trip receiver equipment, while test signification is made in accordance with programmed requirement via an associated return communications link.
Abstract:
Apparatus for automatically testing protective relay system as utilized with high voltage transmission lines, the apparatus consisting of a master control unit, at a first terminal working in conjunction with one or two slave control units at adjacent terminal stations. Each of the master and slave control units are controlled through a cycle of actuation by a synchronous timer means such that a programmed series of switch closures performs a test of associated transmission and reception equipment and the respective protective relay devices to transmit starting signal, ring back, internal and external simulated faults and a selected security code. Each test control unit utilizes a time-controlled program switch which is synchronously operable to effect various test and verify operations in the control unit.