Technical Section WAGO

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5 3.5 and their width corresponds to the mechanical strength the material, however not smaller than mm.25 1.4 2.2 0.7 1.4 2.8 0.8 0.6 1.6 1., Group I, instead Group II).6 0. Classification insulation materials accord- ing their tracking resistance based on their Comparative Tracking Index (CTI) and is defined Table follows: This classification applies insulating parts without ribs grooves. Accounting for the surrounding air tempera- ture 40°C (104°F) specified for electrical equipment, the current-carrying capacity of rubber-insulated conductors reduced to 82%, based DIN VDE 0298-4:2013-06, Table and 87% for PVC-insulated con- ductors for the current-carrying capacity defined for 30°C (86°F) accordance with DIN VDE 0298-4:2013-06, Item 4.1 times higher than the value the table.5 1.8 ≤ 160 3. Conductor Types and Conductor Prepara- tion In accordance with 60079-14/DIN VDE 0165-1, the ends stranded and fine- stranded conductors must protected against splaying (e.9 3.4 ≤ 630 5.4 0.25 1. These items must fulfill the requirements for terminal blocks used for external supply con- ductors. Table Tracking Resistance for Insulation Materials Material Group Comparative Tracking Index I 600 CTI II 400 CTI 600 III 175 CTI 400 III 100 CTI 175 Table Minimum Creepage Distances/Clearances and Isolations Voltage (see a and b ) RMS Value for AC Voltage V Minimum Creepage Distance mm Minimum Clearance and Isolations mm Material Group Clearance mm Distance under Coat- ingd I III III b “eb” “ec” “eb” “ec” “eb” “ec” “eb” “ec” “eb” “ec” “ec” ≤ (see c ) 1.2 1.25 1.3 4.5. Termi- nal blocks with sharp edges which could damage supply lines and those types that can rotated, turned permanently deformed when fixed place are not permit- ted for use. According 60069-7/DIN VDE 0170-6, connecting electrical equipment terminal blocks having “eb” (increased safety) pro- tection type must not lead reduction of the clearances and creepage distances.5 7. Materials that not meet the requirements material group III can used.2 1.6 ≤ 2.1 takes into account that many places circuit the working voltage equal the rated voltage and that number rated voltages are used, which are covered factor 1.3.6 12.8 3.4 1.2 1.1 2.3 ≤ 1.4 0.7 1.8 0.6 1.8 ≤ 100 2.7 2. Therefore, further considerations the voltage fluctuations are unnecessary for determining which voltage value from the table should used.5 1.6 1.3 1. b) The specified values for creepage distances and clearances already take into account 10% tolerance for the high- est supply voltage.6 0. d) The specified distances under consideration apply printed circuit boards protection level “ec” after 4.9 1.5 2.6 1.8 1.3 2.3 ≤ 1.1 2.9 3.4 2.8 1.g.05 1.8 0.7 ≤ 320 6.9 ≤ 800 12.5 2.05 1.8 2.3 1.6 1.8 6.4 ≤ 500 6.6 2.3.1.3 6.6 ≤ 2.5 1.8 0.5 2.1 1.6 1.7 1.8 3.6 1.6 2.6 ≤ 2.6 1.5 0.1 2.g.8 0.3 1.1 2.3 1. NOTE: The factor 1.3 ≤ 1.4 1.2 1.8 1.4 2.4 ≤ 400 5. If the insulating parts have ribs grooves sufficiently large considered, the mini- mum creepage distances must set according values for the insulation materi- als the next-higher level (e.6 1.3 ≤ 1.6 0.5 2.7 ≤ 250 3.4 0.2 3. Clearances between conductive parts having different potentials must least for external connections, specified Table 2.8 1.6 0. Based experience through the application of terminal blocks aggressive atmospheres in the chemical industry, WAGO recommends gas-tight tinned copper ferrules tinned copper pin terminals when connecting fine- stranded conductors terminal blocks in corrosive atmospheres.1 0.6 2.05 1. Soldering alone not sufficient.4 1., via cable lugs fer- rules) the type terminal blocks used.1 1.8 1.2 1.8 ≤ 125 2.25 1.2 2. Terminal blocks for internal con- nections electrical equipment must not be subjected excessive mechanical stress.7 0.1 1. Grooves the surface may only consid- ered they are least 2.1 ≤ 200 2.3 ≤ 1.6 1.3 12.2 1.9 1.37 www.8 0.5 6.2 6.3 3.1 1.2 2. c) CTI values are not applicable for voltages less.3 ≤ 12.5 deep and wide; ribs the surface only their height is at least 2.8 0.2 2.8 0.5 4 ≤ 1000 5.5 1.2 1. .9 2.6 1.2 2.1 1.3 3.8 ≤ 1250 – ≤ 1600 – ≤ 2000 – ≤ 2500 – ≤ 3200 – ≤ 4000 – ≤ 5000 – ≤ 6300 100 – ≤ 8000 100 110 125 – ≤ 10000 125 140 160 100 100 – ≤ 12500 125 – ≤ 13640 138 – a) When determining the required values for creepage distances and clearances, the working voltage may 1.5 2.05 1.wago.6 1.6 1.2 2.com WAGO Rail-Mount Terminal Block Systems Technical Information for Applications It expressly prohibited use insulating parts for transferring contact forces.8 0. The value the creepage distances depends the working voltage, surface geometry the insulating parts and tracking resistance the insulation material.7 3.1 1.6 1.1 0.9 0.8 1