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Short Circuit Indicator type MF |
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| Application The short circuit indicator type MF is used in distribution networks with a radial layout and one input. It is recommendable to use this indicator in case of sight disturbance, for the protection of labour or for other reasons which makes it necessary. An LED indicates the short circuit. The reading instrument needs an independent power supply. |
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| General
Description The short circuit indicator type MF consists of a reading instrument, 3 sensors and 3 light mains, respectively cables. It is available in two versions: Version " L " It is possible to install the sensor on unscreened cables. The sensors and the reading instrument are connected by light mains. Version " S ". The sensors have to be mounted on screened cables only. The connection to the reading instrument is carried out via cable. The sensors are fixed on the high voltage cable with a frame. This frame is variable for round cores with a diameter of 15 to 60 mm and for angular cores with the dimensions of 60 x 12 mm (precision: +/- 10%). The operating point is separately adjusted at each sensor. The reading instrument is available for surface- mounting or panel- mounting. The reading instrument evaluates the detected short circuit impulses and transmits them for indication. The indicator will reset after a preadjusted time. Manual reset is possible at any time. |
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Order Data Short circuit indicator type MFoperating level: (A) ______lenghts of light mains: (mm) _______ reset time: (h) ______ minimum impulse duration: (ms) _______ power supply : (V) _______ order-no.: ___________ |
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