OMNIMATE – Device connectivity and electronics housings

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Weidmüller is a leading international provider of solutions for electrical connectivity,transmission and conditioning of power, signal and data in industrial environments.The company with headquarters in Detmold/Germany develops, produces and sellsproducts in the field of electrical connectivity and electronics all over the world.

Vydal: Weidmüller, s.r.o. Autor: Weidmueller

Strana 616 z 707

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Table Rated impulse withstand voltages for electrical equipment Rated voltage power supply system*) V Rated impulse withstand voltage kV Three-phase systems Single-phase systems with neutral point Electrical equipment at the supply point of the installation Electrical equipment as part the permanent installation Electrical equipment to connected the permanent installation Specially protected electrical equipment (Overvoltage category IV) (Overvoltage category III) (Overvoltage category (Overvoltage category I) 120 240 4.50   6.80   4.50 4.00 2.10   0.50 2.00 3.00 3.00   4.00 2.20 1. .00 3.45  2.15   1.04   0.50 0.33 0.40 0.20 0.00 4. DIN VDE 0110 part contains the mod- ified edition IEC Report 664-1 (see also IEC 664-1/Oct 1992).00 18.20   5.00 18.00 1.50   2.00 0.50 5.00 0.80 1.50 1.00 5.50 0.80 1.50 15.20   3. These values apply for printed circuits but deviate from those IEC Report 664.00 (case 1.00   8.00 18.00 0.50 3.00 4.20 0.12   0.10 0.00 14.00 2.50 0.02 0.01 0.00 8.50 12. The design data resulting from these provisions is – applicable specified this catalogue for each product. • Creepage distances are dimensioned according the operating voltage and the anticipated environmental conditions taking into account the insulating materials used and the protective measures taken prevent pollution.00 2. *) IEC 38 Category valid for specially rated equipment.20 (case B).W.20 0.50 1.60 0.00   1.00 8.00 3.50 5.50 1.50 5.50 4.15 0.50 0.00   5.50 4.00 2.20  1.50 1000 Values depend the particular project or, values are available, the values above for 400/690 can used.00 2.60 0.50 0. KV Minimum clearance distances for sites 2000 above sea level Case (inhomogeneous field) Case (homogeneous field) Pollution severity Pollution severity 1 4   0.60 0.50 400/690 8.04 0.20 0.50 1. Table 2a: Minimum clearances VDE 0110-1/Apr 1997 Rated impulse withstand volt.80 1.45   2.50 5.00 3.00 3.00 2.50   8.10 0.00 0.30 0.80 0.00 6.00 14.00 11.60 0.00 4. Dimensioning clearances Decisive for the dimensioning of clearances are the rated impulse withstand voltages shown table 1, which are derived from the overvoltage category and the phase-to-earth voltage depending the rated mains voltage (taking into account all types of supply systems).00   3.00 14.01 0. Category III valid for technical committees responsible for installation materials, and for some specific technical committees.50 2.02 0. Category valid for power supply companies and particular projects.00 11.25   0.00 1. IEC clearance and creepage distances Dimensioning clearance and creepage distances VDE 0110/Apr 1997 (IEC Report 664-1) “Insulation coordination for electrical equipment in low-voltage systems” The provisions for insulation coordination result the following relationships for dimensioning clearance and creepage distances: • Clearances are dimensioned according the anticipated overvoltages taking into account the ratings the overvoltage protection precautions use and the anticipated environmental conditions taking into account the protective measures taken prevent pollution.50 1) Pollution severity split for impulse voltages 1.20   1.00 4.30 0.00 18.00 4.10 0.00 11.50 5.06 0.00 8.50 3.25   1.00 1.00 1.00 14.00 4.00 3.00 5.80 230/400 277/480 6.00 3.12 0.6 Technicalappendix W Design clearance and creepage distances in electrical equipment General: Since April 1997 the sising clearance and creepage distances has been covered DIN VDE 0110 part 1 “Insulation coordination for electrical equipment low-voltage systems”. The minimum clearances (up site altitudes 2000 above mean sea level) are determined from table based on the rated impulse withstand voltage and the pollution severity.25 0.00 1.00 2.00 11.00 10.50 3. Category valid for technical committees responsible for electrical equipment specified for connecting the mains power supply.06 0.50 1.60   0