Protection Relays ELCT SERIES Current Transformer Description The ELCT series is a sensitive current transformer with integrated flux conditioner used with Littelfuse relays to detect low levels of earth-leakage current. Accessories CBLTP Twisted-pair wire for connection to CT. Order in desired length in meters. Specifications Current Rating ELCT5: 5:0.05 A ELCT30: 30:0.05A Accuracy ELCT5: 3 % 0.01 VA Ordering Information ELCT30: 3 % 0.06 VA TURNS Frequency 50 to 400 Hz ORDERING NUMBER WINDOW SIZE, ID WEIGHT RATIO Insulation Level 600V Operating Temperature -40 to 55 C (-40 to 131 F) ELCT5-31 100:1 31mm (1.22 in) 127.0 g (0.28 lbs) Application SE-701 ELCT5-88 100:1 88mm (3.46 in) 635.0 g (1.40 lbs) 2 Wire Gauge 0.05-3.3 mm (12-30 AWG) ELCT30-31 600:1 31mm (1.22 in) 131.5 g (0.29 lbs) Tightening Torque 0.5 N-m ELCT30-88 600:1 88mm (3.46 in) 680.4 g (1.50 lbs) Certification UL, cUL, CE Compliance RoHS, IEC 61869-2, ANSI/IEEE C57.13 Note: One frequency response may be extended for specific product families Recommended Relay Series: SE-330 ELCT30-31 ELCT30-88 ELCT5-31 ELCT5-88 50.0 5.0 10.0 1.0 1.0 0.1 0.01 0.1 0.1 1.0 10.0 50.0 0.1 1.0 10.0 50.0 SECONDARY EXCITING CURRENT (MILLIAMPERES) SECONDARY EXCITING CURRENT (MILLIAMPERES) Littelfuse.com/relayct 2020 Littelfuse, Inc. 1 of 2 Rev: 050720 SECONDARY EXCITING VOLTAGE (VOLTS) SECONDARY EXCITING VOLTAGE (VOLTS)ELCT INSTALLATION INSTRUCTIONS Rev. 1-A-041818 CONNECTION CTs should be wired according to the diagram below: Protection Relays H1 H2 ELCT SERIES Dimensions and Mounting Diagram Inches millimeters X1 X2 Mount the ELCT5-31 and ELCT30-31 using M5 or 10 screws. Mount the ELCT5-88 and ELCT30-88 using M6 or 1/4 screws. DIMENSIONS AND MOUNTING DIAGRAM Dimensions shown are Inches (millimeters). Mount the CT using M5 or 8 screws. 55.97 2.204 115.59 55.97 4.551 2.204 115.59 4.551 TOP VIEW AND MOUNTING DETAIL 72.64 137.69 2.860 72.64 137.69 5.421 7.62 2.860 5.421 7.62 0.300 31.56 0.300 87.73 1.243 31.56 7.62 87.73 3.454 1.243 0.300 3.454 7.62 0.300 115.59 55.97 4.551 2.204 DESCRIPTION: UNLESS NOTED OTHERWISE DESCRIPTION: UNLESS NOTED OTHERWISE UNLESS NOTED OTHERWISE UNLESS NOTED OTHERWISEDIMENSIONS ARE IN INCHES 137.69 DIMENSIONS ARE IN INCHES DIMENSIONS ARE IN INCHES DIMENSIONS ARE IN INCHESTOLERANCES: 5.421FR ONT VIEW 7.62 TOLERANCES: TOLERANCES: TOLERANCES:FRACTIONAL 1/64 FRACTIONAL 1/64 FRACTIONAL 1/64 PART NUMBER: 0.300 REV FRACTIONAL ANGULAR: 1 deg MATERIAL ANGULAR: 1 deg PART NUMBER: REV ANGULAR: 1 degTWO PLACE DECIMAL 0.01 MATERIAL ANGULAR: 87.73 MATERIAL MATERIAL TWO PLACE DECIMAL 0.01 TWO PLACE DECIMAL 0.01 THREE PLACE DECIMAL 0.005 TWO PLACE DECIMAL 3.454 THREE PLACE DECIMAL 0.005 NAME THREE PLACE DECIMAL DATE NOT DRAWN TO SCALE0.005 THREE PLACE DECIMAL 1.243 WEIGHT: SHEET 1 OF 1 NAME DATE NOT DRAWN TO SCALE DRAWN BYNAME DATE NOT DRAWN TO SCALE NAME DATE NOT DRAWN TO SCALE 7.62 WEIGHT: SHEET 1 OF 1 DRAWN BY DRAWN BY DRAWN BY 0.300 ELCT5-88 and ELCT30-88 ELCT5-31 and DESCRIPTION:ELCT30-31 SIDE VIEW DESCRIPTION: UNLESS NOTED OTHERWISE UNLESS NOTED OTHERWISE DIMENSIONS ARE IN INCHES DIMENSIONS ARE IN INCHES TOLERANCES: TOLERANCES: FRACTIONAL 1/64 FRACTIONAL 1/64 PART NUMBER: REV Disclaimer Notice InformANGULAR: ation fur1 degnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse MATERIAL PART NUMBER: REV ANGULAR: 1 deg TWO PLACE DECIMAL 0.01 MATERIAL products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaime r. TWO PLACE DECIMAL 0.01 THREE PLACE DECIMAL 0.005 THREE PLACE DECIMAL 0.005 NAME DATE NOT DRAWN TO SCALE WEIGHT: SHEET 1 OF 1 DRAWN BY NAME DATE NOT DRAWN TO SCALE 090-04583-00 WEIGHT: SHEET 1 OF 1 DRAWN BY Disclaimer Notice Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer. Littelfuse.com/relayct 2020 Littelfuse, Inc. 2 of 2 Rev: 050720 2.41 2.41 R0.095 R0.095 2.41 R0.095 3.38 R0.133 3.38 R0.133 3.38 R0.133 46.80 1.843 20.64 0.81346.80 33.72 1.843 36.34 1.328 1.431 20.64 0.813 73.36 2.888 61.09 2.405 62.28 28.58 33.72 2.452 36.34 1.125 1.328 1.431 33.72 73.36 36.34 1.328 2.888 1.431 73.36 2.888 61.09 62.28 2.405 2.452 75.60 44.83 2.976 28.58 1.765 1.125 62.28 145.42 61.09 2.452 5.725 2.405 28.58 1.125 134.12 5.280 75.60 44.83 2.976 1.765 145.42 5.725 75.60 44.83 2.976 1.765 145.42 5.725 134.12