electrical data i pn primary nominal current rms 50 at i out output current 16.66 ma v sz output clamping voltage 7.5 v ? p overload capability - continuous 100 a - 1 min 1200 a performance data x g overall accuracy @ i pn , t a = 25c < 1 % e l linearity error 0.1 % tci out temperature coefficient of i out 60 ppm/k dj phase shift 1.5 1 bw frequency bandwidth ( 1db) 50/60 hz general data t a ambient operating temperature - 25 .. + 70 c t s ambient storage temperature - 30 .. + 90 c m mass 80 g ipxx protection degree ip40 isolation characteristics v b rated isolation voltage rms 1) 300 v with iec 61010-1 standards and following conditions : - reinforced isolation - over voltage category cat iii - pollution degree pd2 - heterogeneous field v d rms voltage for ac isolation test 2) , 50hz, 1min 3.5 kv v w impulse withstand voltage 1.2/50ms 6.5 kv dcp creepage distance 6 mm dcl clearance distance 6 mm cti comparative tracking index (group i) 600 notes : 1) if insulated cable is used for the primary circuit, the voltage category could be improved according to the primary cable insulation category (please refer to the cable manufacturer's indications) 2) between primary (completely filling the hole) and secondary. ac current transformer tt 50-sd split core transducer for the electronic measurement of ac waveform currents, with galvanic isolation between the primary circuit (power) and the secondary circuit (measurement). i pn = 50 a features split core type ? 8 mm sensing aperture for non- contact measurement cable output (1m) isolated plastic case recognized according to ul 94-v0 . advantages high accuracy and low phase shift high isolation between primary and secondary circuits compact case cost-effective solution easy installation. applications power meters current measurement for active power calculation energy sub-meters for energy efficiency monitoring, consumption analysis and costs allocation power quality monitoring condition monitoring (e.g. motor loads such as conveyers, pumps or hvac) distributed measurement systems application domain energy and automation 071115/5 www.lem.com lem reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. page 1/4
safety and warning notes in order to guarantee safe operation of the transducer and to be able to make proper use of all features and functions, please read these instructions thoroughly! safe operation can only be guaranteed if the transducer is used for the purpose it has been designed for and within the limits of the technical specifications. ensure you get up-to-date technical information that can be found in the latest associated datasheet under www.lem.com. caution! risk of danger ignoring the warnings can lead to serious injury and/or cause damage! the electric measuring transducer may only be installed and put into operation by qualified personnel that have received an appropriate training. the corresponding national regulations shall be observed during installation and operation of the transducer and any electrical conductor. the transducer shall be used in electric/electronic equipment with respect to applicable standards and safety requirements and in accordance with all the related systems and components manufacturers? operating instructions. caution! risk of electrical shock when operating the transducer, certain parts of the module may carry hazardous live voltage (e.g. primary conductor, power supply). the user shall ensure to take all measures necessary to protect against electrical shock. the transducer is a built-in device containing conducting parts that shall not be accessible after installation. a protective enclosure or additional insulation barrier may be necessary. the transducer shall not be put into operation if the jaw opening is open (split core version) or the installation is not completed. installation and maintenance shall be done with the main power supply disconnected except if there are no hazardous live parts in or in close proximity to the system and if the applicable national regulations are fully observed. safe and trouble-free operation of this transducer can only be guaranteed if transport, storage and installation are carried out correctly and operation and maintenance are carried out with care. current transformer tt 50-sd 071115/5 www.lem.com lem reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. page 2/4
4 3 2 . 5 4 4 1 3 1 . 5 2 3 . 5 2 7 . 5 3 2 . 5 2 3 . 5 8 1 0 0 0 + / - 2 0 . 0 0 1 0 n . p k l 8 3 . 2 l ( b k ) k ( w t ) ip dimensions tt 50-sd (in mm. 1 mm = 0.0394 inch) mechanical characteristics general tolerance 1 mm primary aperture ? 8 mm fastening cable tie output cable length 1000 mm 071115/5 www.lem.com lem reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. page 3/4 remark attention: contact areas (air gap) must be kept clean (particle free) to ensure proper performance connections
071115/5 www.lem.com lem reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. page 4/4 electrical output characteristics TT50-SD accuracy and phase shift (50hz) -5 -4 -3 -2 -1 0 1 2 3 4 5 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 primary current ip (a) accuracy (%) phase shift (degree) parameter: load resistance rl [ohm] 100ohm 50ohm 25ohm 15ohm 15ohm 25ohm 50ohm 100ohm (phase shift: +1.5 +/-1 degree typ.) (accuracy: +/-1% typ.) TT50-SD accuracy and phase shift (60hz) -5 -4 -3 -2 -1 0 1 2 3 4 5 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 primary current ip (a) accuracy (%) phase shift (degree) parameter: load resistance rl [ohm] (accuracy: +/-1% typ.) (phase shift: +1.5 +/-1 degree typ.) 100ohm 50ohm 25ohm 15ohm 15ohm 25ohm 50ohm 100ohm
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