User manual OMRON IEC 947 DATASHEET

[. . . ] Low Voltage Switch Gear Appendix Precautions Notice Use under rated condition, otherwise contactors will not only cause malfunction, but also cause a fire or damage the contactor. Life period of contactor depends on the operating application. Please check the electrical life under real application in advance. If you continue to use malfunctioning contactor, a fire or breakdown may occur. [. . . ] The power supply to the entire installation or a section of the installation can thus be cut off for safety reasons, e. g. during maintenance. Losses (IEV 151-03-18) The difference between the input power and the output power of a device. The main type of loss in electrical power distribution switchgear and operating media is current heat loss. Pollution degree (IEC 947-1; 6. /1. 3. 2) Conventional number for the prospective quantities of conductive dust and humidity which can lead to a reduction in the control circuit reliability of a device. The pollution degree is described by the following influencing factors: Tamper proof An emergency-stop switching device is regarded as tamper proof provided it cannot be reset without tools or via a prescribed procedure, after tripping has taken place. The device latches in the tripped position. Accidental or deliberate manipulation (inching) is thus ruled out. Pollution degree 1: No pollution or only dry, non-conductive pollution occurs. The pollution does not affect the control circuit reliability. Pollution degree 2: Usually, only non-conductive pollution. However, transient conductivity through condensation is to be expected. Pollution degree 3: (switchgear for industrial use) Conductive pollution or dry, non-conductive pollution which is rendered conductive through condensation. Pollution degree 4: The pollution leads to long-term conductivity, e. g. pollution by conductive dust, rain or snow. Low Voltage Switch Gear Appendix 89 Coordination type Status of a switchgear combination (motor starter) during and after testing at rated conditional current: vided they are mechanically linked in such a way as to ensure that normally open and normally closed contacts can never be closed simultaneously. This arrangement must also ensure that minimum contact separation of 0. 5 mm is maintained over the entire lifespan of the device, even during a fault, e. g. The relevant German Trade Association requires the use of contactors with interlocked opposing contacts for control systems on power presses in the metal processing industry. Coordination Type "1": - No risk to persons or installations - No requirement for immediate readiness for renewed operation - Damage to the starter is permissible Coordination type "2": - No risk to persons or installations - Starter is capable of renewed operation - No damage to the starter with the exception of a slight welding of the contacts, provided they can be separated without significant deformation. Positive/enforced operation/actuation This describes an arrangement where a link between the actuator and the switching element ensures that the force exerted on the actuator is transferred directly, i. e. without the intervention of sprung parts, onto the switching element. Positive opening operation (IEC 947-1; 2. 4. 11/IEV 441-16-12) This opening operation is designed to ensure that auxiliary contacts of a switching device are always in the respective positions corresponding to the open or closed position of the main contacts. The contacts of a contactor are interlocked opposing contacts, pro- Positive opening (IEC 947-1; 2. 4. 10/IEV 441-16-11) An opening operation which ensures that the main contacts of a mechanical switching device have attained the open position when the actuator is in the Off-position. Symbols used in Technical Data and Formulae DF Icn Ics Icu Ie I"sc In INT Iq Ir Irm Duty factor Rated short-circuit breaking capacity Rated service short-circuit breaking capacity Rated ultimate short-circuit breaking capacity Rated operational current Transformer initial short-circuit current AC Rated current Rated transformer current Rated conditional short-circuit current Set value of overcurrent release Response value of non-delayed short-circuit release Ith Ithe Iu SNT Uc Ue Ui Uimp uk Us Conventional free air thermal current Conventional thermal current of enclosed devices Rated uninterrupted current Transformer rating Rated actuating voltage Rated operational voltage Rated insulation voltage Rated impulse withstand voltage Transformer short-circuit voltage Rated control voltage 90 Low Voltage Switch Gear Appendix Additional ordering information for contactors CE-Marking The manufacturer has to sign his products with the CE-Marking. With the CE-Marking the manufacturer confirms the accordance with the different EEC Directives. The CE-Marking is absolutely necessary to sell the products in the EEC. Attached you find the EEC Directives concerning our products. Low Voltage Directive (73/23/EEC) EMC Directive (89/336/EEC) Declarations of Conformity art. on request. Test Authorities, Registration Mark, Approvals OMRON Low voltage switchgear is built and tested to national and international specifications. All devices suit all important specifications without any test obligation, like VDE, BS and also relative to IEC Recommendations and to European Standards like IEC 947 and EN 60947. It is for this reason OMRON Low voltage switchgear is used all over the world. In order to provide special versions, limitations to the max. voltages, currents and power ratings or special markings are sometimes necessary. [. . . ] 1 Nm = 1 J (joule) to calorie Horse-power to kilowatts (kW) Kilowatts to horse-power (h. p. ) 1 W (watt) = 1J/s Atmospheres to lb per square inch (lb/inch2) 1 bar = 1 kg/cm2 = 735. 6 mm Hg = 14. 2 lb/inch2 3 2 Multiply by 25. 4 0. 03937 0. 3048 3. 2808 0. 9144 1. 0936 1. 6093 0. 6214 645. 16 0. 00155 0. 8361 1. 196 16. 387 0. 06102 0. 4536 2. 2046 1, 016. 05 0. 0009842 28. 3495 0. 0353 4. 561 0. 220 0. 225 Conversion table for: Centigrade/Fahrenheit BP-212 200 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 FP40 30 20 10 0 °F 20 °C 10 10 0 20 30 50 40 60 70 90 80 100 0. 239 0. 7458 1. 3408 14. 68 Conversion table for mm²/AWG cable sizes mm2 0. 75 1. 0 1. 5 2. 5 4. 0 6. 0 10. 0 AWG 18 17 16 13 12 10 8 100 Low Voltage Switch Gear Appendix Rated currents of 3-phase motors (approx. figures for squirrel-cage motors) Minimum fuse size for protection of 3-phase motors The maximum size is determined by the requirements of the switchgear or overload relay. The rated motor currents are for standard 1500 r. p. m. 3-phase enclosed ventilated and totally enclosed fan-cooled motors. [. . . ]