Appliance classes Wikipedia. In the electrical appliance manufacturing industry, the following IEC protection classes are defined in IEC 6. These appliances must have their chassis connected to electrical earth. Class 0editThese appliances have no protective earth connection and feature only a single level of insulation between live parts and exposed metalwork. If permitted at all, Class 0 items are intended for use in dry areas only. A single fault could cause an electric shock or other dangerous occurrence, without triggering the automatic operation of any fuse or circuit breaker. Sales of such items have been prohibited in much of the world for safety reasons, for example in the UK by Section 8 of The Low Voltage Electrical Equipment Safety Regulations 1. ГОСТ 30331. 12013 iec 6036412005 Электроустановки низковольтные. Часть 1. Основные положения, оценка. HART transparent repeater 5106A 3 5port 3. VAC galvanic isolation Low response time 2wire supply 17 V 1 or 2channel version. TRKYEDE BNALARDA ELEKTRK TESSATI LE LGL IEC International Electrotechnical Commission STANDARDLARI IEC TC 64 alma grubunun da. Anmerkung Diese Liste kann keinen Anspruch auf Aktualitt erheben. Eine aktuelle Liste dieser Normen kann auf der Website vom VDEVerlag abgerufen werden. ГОСТ Р 50571. 5. 542013МЭК 603645542011 Электроустановки низковольтные. Часть 554. Заземляющие. New Zealand by the Electricity Act. However, equipment of this class is common in 1. V countries, and in much of the 2. V developing world, whether permitted officially or not. Fiche produit Caractristiques XCKP2118P16 OsiSense XCKP inter. O1F brusque M16 Principales Gamme de produits OsiSense XC. Gamemon Universal Usb Converter Software there. Iec 61140 Pdf' title='Iec 61140 Pdf' />These appliances do not have their chassis connected to electrical earth. Class IeditThese appliances must have their chassis connected to electrical earth US ground by a separate earth conductor coloured greenyellow in most countries, green in the US, Canada and Japan. The earth connection is achieved with a 3 conductor mains cable, typically ending with 3 prong AC connector which plugs into a corresponding AC outlet. The basic requirement is that no single failure can result in dangerous voltage becoming exposed so that it might cause an electric shock and that if a fault occurs the supply will be removed automatically this is sometimes referred to as ADS Automatic Disconnection of Supply. A fault in the appliance which causes a live conductor to contact the casing will cause a current to flow in the earth conductor. Iec 61140 Pdf' title='Iec 61140 Pdf' />If large enough, this current will trip an over current device fuse or circuit breaker CB and disconnect the supply. The disconnection time has to be fast enough not to allow fibrillation to start if a person is in contact with the casing at the time. This time and the current rating in turn sets a maximum earth resistance permissible. To provide supplementary protection against high impedance faults it is common to recommend a residual current device RCD also known as a residual current circuit breaker RCCB, ground fault circuit interrupter GFCI, or residual current operated circuit breaker with integral over current protection RCBO, which will cut off the supply of electricity to the appliance if the currents in the two poles of the supply are not equal and opposite. Class 0. IeditElectrical installations where the chassis is connected to earth with a separate terminal, instead of via the mains cable. In effect this provides the same automatic disconnection as Class I, for equipment that otherwise would be Class 0. Class IIeditA Class II or double insulatedelectrical appliance is one which has been designed in such a way that it does not require a safety connection to electrical earth ground. The basic requirement is that no single failure can result in dangerous voltage becoming exposed so that it might cause an electric shock and that this is achieved without relying on an earthed metal casing. This is usually achieved at least in part by having at least two layers of insulating material between live parts and the user, or by using reinforced insulation. In Europe, a double insulated appliance must be labelled Class II or double insulated or bear the double insulation symbol a square inside another square. Insulated ACDC power supplies such as cell phone chargers are typically designated as Class II, meaning that the DC output wires are isolated from the AC input. The designation Class II should not be confused with the designation Class 2, as the latter is unrelated to insulation it originates from standard UL 1. Class IIIeditA Class III appliance is designed to be supplied from a separatedsafety extra low voltage SELV power source. The voltage from a SELV supply is low enough that under normal conditions a person can safely come into contact with it without risk of electrical shock. The extra safety features built into Class I and Class II appliances are therefore not required. For medical devices, compliance with Class III is not considered sufficient protection, and further more stringent regulations apply to such equipment. See alsoeditReferenceseditIEC 6. Protection against electric shock Common aspects for installation and equipment. International Electrotechnical Commission. IEC 5. 36 2 Classification of electrical and electronic equipment with regard to protection against electric shock, 1. BS 2. 75. 4  1. 97. Memorandum. Construction of electrical equipment for protection against electric shock.