;1954 Chevrolet Advance-Design vehicles. For a great deal of price ТЕХНИКА, ХОББИ и РАЗВЛЕЧЕНИЯ, ХОББИ и РЕМЕСЛА Название: 1954 Chevrolet Advance-Design vehicles. For a great deal of worth Автор: - Издательство: - Год: 1953 Страниц: forty Формат: pdf Размер: 18,9 MбОфициальный рекламный проспект, посвященный коммерческим автомобилям и школьным автобусам Chevrolet 1954 модельного года: Chevrolet 1500, Chevrolet 3100, Chevrolet 3600, Chevrolet 3800, Chevrolet 4100, Chevrolet 4400, Chevrolet 6100, Chevrolet 6400, Chevrolet 6500, Chevrolet 5100, Chevrolet 5400, Chevrolet 5700 и их модификациям. eighty five
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Brief description of a relay which works on the basis of detection of negative sequence current is explained as follows. The relay has two built-in current transformers which sense currents of the motor. The secondary of the CTs feeds a negative sequence filter. The output from this filter is proportional to the negative sequence component of currents. This output is fed to a sensor which detects the level of negative sequence components of current and thus trips the motor starter by opening its control contact.
5 shows a DTH 100 L & T make MCCB. Fig. pm5 14 15 CONTROL CIRCUIT COMPONENTS An MCCB automatically isolates an electrical circuit under sustained overloads or short circuits. A thermal release consisting of bimetallic elements having inverse time current tripping characteristic trips the circuit breaker on sustained overload. The breaker is opened by an electromagnetic release in case of short circuit faults. When the current is less than 10 times the setting of the thermal release the breaker trips due to thermal release and when current exceeds 10 times its value, the breaker is opened by magnetic release.
When the latch coil is energised the relay operates and is held in the energised position either by a mechanical latch or a permanent magnet. The relay remains in the energised position even when the latch coil is de-energised. The relay can be brought back to the deenergised position only when the unlatch coil is energised. The relay construction can be of two types depending on how the relay is held in the energised position when the latch coil is de-energised. , the mechnical latched type and the permanent magnet type are described as follows.