WEIDMUELLER Hlavní katalog řadových svorek (EN)

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5 12.e. W Technicalappendix W.18 1282250000 2012/2013 . Insulating material group I 600 CTI II 400 CTI 600 III 175 CTI 400 III 100 CTI 175 The comparative tracking index must be determined using special samples produced for this purpose with test solution compliance with IEC 60112 (DIN IEC 60112/DIN VDE 0303-1).5 – 24 – 30 – 42 50**) – 60 – 30–60 32 100**) 100 – 110 120 125 – 150**) 160 – 220 250 – 110–220 250 125 120–240 300**) 320 – 220–440 500 250 600**) 630 – 480–960 1000 500 1000**) 1000 – 3-phase 3- 4-wire systems Rated voltage of the power supply (mains)*) Voltages for table 4 For insulation phase-to-phase For insulation phase-to-earth All systems 3-phase 4-wire systems with earthed neutral wire2 ) 3-phase 3-wire systems unearthed1 ) or phase-earthed V V 60 63 110/120/127 125 125 150**) 160 160 208 200 125 200 220/230/240 250 160 250 300**) 320 320 380/400/415 400 250 400 440 500 250 500 480/500 500 320 500 575 630 400 630 600**) 630 630 660/690 630 400 630 720/830 800 500 800 960 1000 630 1000 1000**) 1000 1000 1) Phase-to-earth insulation levels for unearthed impedance-earthed systems are equal those phase-to-phase because the operating voltage earth any phase can, practice, reach full phase-to-phase voltage. The lower value the phase-to-neutral voltage, while the higher value the phase-to-phase voltage. earthing V V 12. The values given table are still taken into account in tables and the symbol. This because the actual voltage earth determined the insulation resistance and capacitive reactance each phase earth; thus, a low (but acceptable) insulation resistance one phase can earth and raise the other two full phase-to-phase voltage earth.Electrical data Design clearances and creepage distances in electrical equipment influencing factors Rated voltage The rated voltage derived from the nominal voltage the power supply and the corresponding network type. *) It assumed that the rated voltage the electrical equipment not lower than the nominal voltage the power supply. **) Because the common changes, the meaning the symbol has not been used table i. Where only one value is indicated, refers 3-wire 3-phase systems and specifies the value phase-to-phase. Insulating material group The insulating materials are divided into four groups depending the comparative figures for creepage distance (CTI comparative tracking index): Single-phase 2- 3-wire systems Rated voltage of the power supply (mains)*) Voltages for table 4 For insulation phase-to-phase1) For insulation phase-to-earth1) All systems 3-wire systems neutral pt. the symbol indicates 4-wire 3-phase distribution system. 2) For electrical equipment for use both 3-phase 4-wire and 3-phase 3-wire supplies, earthed and unearthed, use the values for 3-wire systems only