| 摘要 |
An Ancillary Device for Testing Electric Instruments (DAPRE by its acronym in Spanish) is an improved test block for facilitating the connections of the conductor terminals at the rear portion thereof by means of screws operated by a flat and/or cross head screwdriver, the invention being useful in eye-type connector terminals, being easily mounted onto flat sheets and having a higher current conduction ability. The purpose of the present invention is to facilitate the maintenance of instruments for protecting and measuring the industrial and power electric systems, using a device different from those currently available on the market. The DAPRE is permanently connected to the circuit where instruments are connected to feeding transformers, when a device called Insertion Device for Electric Signal Tests (DIPSE by its acronym in Spanish) is inserted into the DAPRE, the instrument being disconnected from the analogical signals resulting from the transformers, thus being isolated from th e control signals and having access to the terminals of the instruments for being subjected to maintenance tests.
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