AC Current transformer TT 50-SD I = 50 A PN Split core transducer for the electronic measurement of AC waveform currents, with galvanic isolation between the primary circuit (power) and the secondary circuit (measurement). Electrical data I Primary nominal current rms 50 At PN Features I Output current 16.66 mA OUT V Output clamping voltage 7.5 V SZ Split core type Overload capability - continuous 100 A P 8 mm sensing aperture for non- - 1 min 1200 A contact measurement Cable output (1m) Isolated plastic case recognized Performance data according to UL 94-V0. X Overall accuracy I , T = 25C < 1 % G PN A Linearity error 0.1 % L Advantages TCI Temperature coefficient of I 60 ppm/K OUT OUT Phase shift 1.5 1 High accuracy and low phase shift BW Frequency bandwidth ( 1dB) 50/60 Hz High isolation between primary and secondary circuits Compact case General data Cost-effective solution T Ambient operating temperature - 25 .. + 70 C A Easy installation. T Ambient storage temperature - 30 .. + 90 C S m Mass 80 g IPxx Protection degree IP40 Applications Power meters Current measurement for active Isolation characteristics power calculation 1) V Rated isolation voltage rms 300 V b Energy sub-meters with IEC 61010-1 standards and following conditions : For energy efficiency monitoring, - Reinforced isolation consumption analysis and costs - Over voltage category CAT III allocation - Pollution degree PD2 - Heterogeneous field Power quality monitoring 2) V Rms voltage for AC isolation test , 50Hz, 1min 3.5 kV Condition monitoring d V Impulse withstand voltage 1.2/50ms 6.5 kV w (e.g. motor loads such as dCp Creepage distance 6 mm conveyers, pumps or HVAC) dCl Clearance distance 6 mm Distributed measurement systems CTI Comparative tracking index (Group I) 600 Application domain 1) Notes : If insulated cable is used for the primary circuit, the voltage category Energy and Automation 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. Page 1/4 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 071115/5 www.lem.comCurrent transformer TT 50-SD 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. Page 2/4 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 071115/5 www.lem.com