National Instruments NI VB-8012 Safety, Environmental, And Regulatory Information
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SAFETY, ENVIRONMENTAL, AND REGULATORY INFORMATIONNI VB-8012NI VirtualBench ™ All-In-One InstrumentThis document includes compliance precautions and connection information for the National Instruments VB-8012.Note The guidelines in this document are specific to the NI VB-8012.Safety GuidelinesThe following section contains important safety information that you must follow when installing and using the hardware.Do not operate the hardware in a manner not specified in this document and in the user documentation. Misuse of the hardware can result in a hazard. You cancompromise the safety protection if the hardware is damaged in any way. If the hardware is damaged, return it to National Instruments for repair.Hazardous Voltage This icon denotes a warning advising you to take precautions to avoid electrical shock.Caution Do not operate the VirtualBench in a manner not specified in this document. Product misuse can result in a hazard. You can compromisethe safety protection built into the product if the product is damaged in any way. If the product is damaged, return it to National Instruments for repair.Clean the hardware with a soft, nonmetallic brush. Make sure that the hardware is completely dry and free from contaminants before returning it to service.Do not substitute parts or modify the hardware except as described in the NI VirtualBench Help. Use the hardware only with the accessories and cables specifiedin the NI VirtualBench Help or specifications.Do not operate the hardware in an explosive atmosphere or where there may be flammable gases or fumes.You must insulate signal connections for the maximum voltage for which the hardware is rated. Do not exceed the maximum ratings for the hardware. Do notinstall wiring while the hardware is live with electrical signals. Do not remove or add connector blocks when power is connected to the system. Avoid contactbetween your body and the connector pins when hot-swapping hardware. Remove power from signal lines before connecting them to or disconnecting themfrom the hardware.Operate the hardware only at or below Pollution Degree 2. Pollution is foreign matter in a solid, liquid, or gaseous state that can reduce dielectric strength orsurface resistivity. The following is a description of Pollution Degrees:• Pollution Degree 1 means no pollution or only dry, nonconductive pollution occurs. The pollution has no influence. Typical level for sealed componentsor coated PCBs.• Pollution Degree 2 means that only nonconductive pollution occurs in most cases. Occasionally, however, a temporary conductivity caused bycondensation must be expected. Typical level for most products.• Pollution Degree 3 means that conductive pollution occurs, or dry, nonconductive pollution occurs that becomes conductive due to condensation.Operate the hardware at or below the measurement category1 marked on the hardware label. Measurement circuits are subjected to working voltages 2 andtransient stresses (overvoltage) from the circuit to which they are connected during measurement or test. Measurement categories establish standard impulsewithstand voltage levels that commonly occur in electrical distribution systems. The following is a description of measurement categories:• Measurement Categories CAT I and CAT O (Other) are equivalent and are for measurements performed on circuits not directly connected to the electricaldistribution system referred to as MAINS3 voltage. This category is for measurements of voltages from specially protected secondary circuits. Such voltagemeasurements include signal levels, special hardware, limited-energy parts of hardware, circuits powered by regulated low-voltage sources, andelectronics.• Measurement Category II is for measurements performed on circuits directly connected to MAINS. This category refers to local-level electricaldistribution, such as that provided by a standard wall outlet (for example, 115 AC voltage for U.S. or 230 AC voltage for Europe). Examples ofMeasurement Category II are measurements performed on household appliances, portable tools, and similar hardware.• Measurement Category III is for measurements performed in the building installation at the distribution level. This category refers to measurements onhard-wired hardware such as hardware in fixed installations, distribution boards, and circuit breakers. Other examples are wiring, including cables, busbars, junction boxes, switches, socket outlets in the fixed installation, and stationary motors with permanent connections to fixed installations.• Measurement Category IV is for measurements performed at the primary electrical supply installation typically outside buildings. Examples includeelectricity meters and measurements on primary overcurrent protection devices and on ripple control units.To obtain the safety certification(s) for this product, visit ni.com/certification, search by model number or product line, and click the appropriate linkin the Certification column.1 Measurement categories, also referred to as overvoltage or installation categories, are defined in electrical safety standards IEC 61010-1 and IEC 60664-1.2 Working voltage is the highest rms value of an AC or DC voltage that can occur across any particular insulation.3 MAINS is defined as a hazardous live electrical supply system that powers hardware. Suitably rated measuring circuits may be connected to the MAINS formeasuring purposes. |
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