Abstract: A test switch, including a base having a height axis, a length axis, and a width, a pair of side biased contacts that move apart when a blade is inserted between the pair of side biased contacts, and a spring in a spring holder in contact where the spring is in contact with one of the pair of side biased contacts. Each of the contacts is conductively connected to a conductor, the spring is at an angle ? degrees to the height axis where ? is between 14° and 18°, the base width is approximately 1 13/16 inches, and the test switch is rated for at least 600 volts and 30 amps. Furthermore, ? may be between 15°and 17°or preferably ? is approximately 16°. Finally, the test switch meets or exceeds the requirements of ANSI/IEEE Standard C37.90.

Abstract: A low power switch for use low voltage electrical monitoring circuits provided with signals from a low power instrument transformer such as found in substation facilities that signals via a communication protocol the operational status of potential, current and signal secondary circuits when connected to protection and monitoring devices (or test devices) such as protective relays, fault recorders or any other monitoring and controlling device. The low power switch includes various safety features to prevent damage to the equipment or harm to a technician.

Abstract: A test system and method for relay connection and testing of a power transmission and distribution grid including a fixed connection block connected to the power transmission and distribution grid, and a mobile plug which connects the fixed connection block or a mobile test block with the relay when the mobile plug is inserted into the fixed connection block or the mobile test block. The mobile test block provides a connection to an external relay testing device when the mobile test plug is inserted into the mobile test block, the fixed connection block provides internal shorting that is activated when the mobile plug is not inserted into the fixed connection block and is deactivated when the mobile plug is inserted into the fixed connection block, and the fixed connection block, mobile plug, and the mobile test block provides an interaction between a power transmission and distribution grid side and a relay side. This allows a quick recovery when relays are damaged in a cyber-attack.

Abstract: A test system and method for relay connection and testing of a power transmission and distribution grid including a fixed connection block connected to the power transmission and distribution grid, and a mobile plug which connects the fixed connection block or a mobile test block with the relay when the mobile plug is inserted into the fixed connection block or the mobile test block. The mobile test block provides a connection to an external relay testing device when the mobile test plug is inserted into the mobile test block, the fixed connection block provides internal shorting that is activated when the mobile plug is not inserted into the fixed connection block and is deactivated when the mobile plug is inserted into the fixed connection block, and the fixed connection block, mobile plug, and the mobile test block provides an interaction between a power transmission and distribution grid side and a relay side. This allows a quick recovery when relays are damaged in a cyber-attack.

Abstract: An interface test device for testing a circuit, the interface test device including a module configured to open and close a medium to high voltage monitoring circuit, the module having at least one pair of contacts biased towards each other that are electrically connected and in line with the medium to high voltage monitoring circuit; at least one pair of insulated jacks, wherein the at least one pair of insulated jacks is connected to the medium to high voltage monitoring circuit before or substantially simultaneously with the medium to high voltage monitoring circuit being opened; at least one disconnect plug that is insertable into the module through at least one parking opening into at least one parking position and insertable into the module through at least one disconnect opening into at least one disconnect position.

Abstract: An interface test device for testing a circuit, the interface test device including a module assembly including a plurality of modules, wherein a test block assembly is formed from individual test blocks that are arranged at one another in parallel and fixated at one another, wherein a test plug assembly is formed from individual test plugs that are arranged at one another other in parallel and fixated at one another, wherein a movement of a lever arm out of a plane of an insertion direction of the test plug assembly into the test block assembly is transferred by strut elements to pinions of the test plug assembly and inserts test fingers of the test plug assembly into openings of the test block assembly, wherein one of the test fingers of the test plug assembly opens a medium to high voltage monitoring circuit.

Abstract: An interface test device for testing a circuit, the interface test device including a module configured to open and close a medium to high voltage monitoring circuit, the module having at least one pair of contacts biased towards each other that are electrically connected and in line with the medium to high voltage monitoring circuit; at least one pair of insulated jacks, wherein the at least one pair of insulated jacks is connected to the medium to high voltage monitoring circuit before or substantially simultaneously with the medium to high voltage monitoring circuit being opened; at least one disconnect plug that is insertable into the module through at least one parking opening into at least one parking position and insertable into the module through at least one disconnect opening into at least one disconnect position.

Abstract: An interface test device for testing a circuit, the interface test device including a module assembly including a plurality of modules, wherein a test block assembly is formed from individual test blocks that are arranged at one another in parallel and fixated at one another, wherein a test plug assembly is formed from individual test plugs that are arranged at one another other in parallel and fixated at one another, wherein a movement of a lever arm out of a plane of an insertion direction of the test plug assembly into the test block assembly is transferred by strut elements to pinions of the test plug assembly and inserts test fingers of the test plug assembly into openings of the test block assembly, wherein one of the test fingers of the test plug assembly opens a medium to high voltage monitoring circuit.

Abstract: A monitored test block for use in medium and high voltage electrical monitoring circuits such as found in substation facilities that signals via a communication protocol the operational status of potential, current and signal secondary circuits when connected to protection and monitoring devices (or test devices) such as protective relays, fault recorders or any other monitoring and controlling device. The monitored test block includes various safety features to prevent damage to the equipment or harm to a technician. The monitoring circuits may be located in the front for ease of access.

Abstract: The subject matter of the invention is a terminal block (1) as part of a high or mean voltage plant with at least one converter and at least one transformer, said terminal block (1) comprising several terminal ports (5, 6) disposed side by side, each terminal port (5) having two contacting terminal tongues (5a), an electric circuit being closed by the contacting terminal tongues (5a), there being provided a plug (20) that comprises at least one electrically non conductive plug tongue (22) for disconnecting said terminal tongues (5a) in one terminal port (5) in order to open an electric circuit.

Abstract: A monitored test block for use in medium and high voltage electrical monitoring circuits such as found in substation facilities that signals via a communication protocol the operational status of potential, current and signal secondary circuits when connected to protection and monitoring devices (or test devices) such as protective relays, fault recorders or any other monitoring and controlling device. The monitored test block includes various safety features to prevent damage to the equipment or harm to a technician. The monitoring circuits may be located in the front for ease of access.

Abstract: The subject matter of the invention is an apparatus for testing a protective, measuring or metering device as a constituent part of a high or medium voltage installation, more specifically of a utility protective relay, of a generator protective device, of a current meter and so on in a high or medium voltage installation, a combined terminal and pole block (1) located in the input field of the high or medium voltage installation being connected in the protective field to the protective, measuring or metering device, said terminal and pole block (1) comprising several terminal and pole segments (2) disposed behind each other, each terminal and pole segment (2) comprising on its upper side a pole opening (5) for receiving the pole blade (7) of a plug (8), each terminal and pole segment (2) having a cable clamping apparatus (27; 31) on either side thereof, said cable clamping apparatus (27; 31) being accessible through an opening (22a) for the cable disposed in the side wall of the terminal and pole segment (2)

Abstract: The subject matter of the invention is a terminal block (1) as part of a high or mean voltage plant with at least one converter and at least one transformer, said terminal block (1) comprising several terminal ports (5, 6) disposed side by side, each terminal port (5) having two contacting terminal tongues (5a), an electric circuit being closed by the contacting terminal tongues (5a), there being provided a plug (20) that comprises at least one electrically non conductive plug tongue (22) for disconnecting said terminal tongues (5a) in one terminal port (5) in order to open an electric circuit.

Abstract: The subject matter of the invention is an apparatus for testing a protective, measuring or metering device as a constituent part of a high or medium voltage installation, more specifically of a utility protective relay, of a generator protective device, of a current meter and so on in a high or medium voltage installation, a combined terminal and pole block (1) located in the input field of the high or medium voltage installation being connected in the protective field to the protective, measuring or metering device, said terminal and pole block (1) comprising several terminal and pole segments (2) disposed behind each other, each terminal and pole segment (2) comprising on its upper side a pole opening (5) for receiving the pole blade (7) of a plug (8), each terminal and pole segment (2) having a cable clamping apparatus (27; 31) on either side thereof, said cable clamping apparatus (27; 31) being accessible through an opening (22a) for the cable disposed in the side wall of the terminal and pole segment (2)

Abstract: High to medium voltage interface test systems and methods of testing high to medium voltage systems are provided. A high to medium voltage interface test device for testing a circuit connected comprises a block having a first aperture and a plug having a finger to insert into the first aperture. The finger can have insulation disposed between pins to isolate the pins, maintain correct polarity for the circuit, and open and connect to a circuit substantially simultaneously. An interface testing method for testing a high to medium voltage circuit can comprise inserting a finger of a test module into a first aperture of a block module, opening the circuit with the finger, and connecting the finger to the circuit. The opening and connecting to the circuit occur substantially simultaneously to achieve a make-before-break sequence.

Abstract: The present invention relates to an interface test system. In one embodiment, an interface test device for testing a circuit connected comprises a block having a first aperture and a plug having a finger to insert into the first aperture. The finger can have insulation disposed between pins to isolate the pins, maintain correct polarity for the circuit, and open and connect to a circuit substantially simultaneously. An interface testing method for a circuit can comprise inserting a finger of a test module into a first aperture of a block module, opening the circuit with the finger, and connecting the finger to the circuit. The opening and connecting to the circuit occur substantially simultaneously to achieve a make-before-break sequence. Other embodiments are also claimed and described.