IEC 63044-3 pdf free download
IEC 63044-3 pdf free download.Home and building electronic systems (HBES) and building automation and control systems (BACS) – Part 3: Electrical safety requirements.
If the equipment has provision for a permanent protective earth connection in accordance with item 1) above, it is not necessary to make any measurements, except that I2 shall comply with the relevant requirements of the product safety standard. Touch current tests， if necessary, are made using the relevant measuring instrument described in IEC 60990 or any other instrument giving the same results. A capacitive coupled AC source of the same line frequency and phase as the AC mains supply is applied to each communication port such that 0,25 mA, or the actual current from other devices if known to be lower, is available to flow into that communication port. The current flowing in the earthing conductor is then measured. 6.3.3.4.3 Devices whose network ports have no reference to protective earth If the network ports on the device do not have a common connection, each communication port shall comply with the requirements for touch current in IEC 62949. If all communication ports or any groups of such ports have a common connection including a network segment, the total touch current from each common connection shall not exceed 3,5 mA. Compliance is checked by inspection and if necessary by the tests of EN 41003 or, if there are common connection points, by the following test. A capacitive coupled AC source of the same frequency and phase as the AC mains supply is applied to each communication port such that 0,25 mA, or the actual current from the other if known to be lower, is available to flow into that communication port. Common connection points are tested whether or not the points are accessible.6.3.4 Protection of the communication wiring from overheating In addition to the control function, the network may provide a power supply function. To make sure that the communication cable is protected from overheating, the power supply shall have a short circuit and/or overload current limitation. The current-carrying capacity for the communication wires shall be at least equal to the total current limitation for the connected power supplies. The temperature limits and current-carrying capacities for the communication wires specified in IEC 60364-5-52 shall not be exceeded. Compliance is checked by inspection and measurement. 6.4 Installation Installation of a home and building automation and control system shall comply with IEC 60364 (all parts) and manufacturer installation instructions. NOTE Additional national requirements may apply.If the electrical separation (simple and protective separation) has a creepage distance, the voltage specified by the letter A shall be used for dimension of the creepage distance. However this creepage distance shall not be less than the clearance for the electrical separation. If the electrical separation (simple and protective separation) has a clearance and/or a solid insulation, the voltage specified by the letters B and either C or D shall be used for dimension of the clearance and/or the solid insulation. If the product standard has no test requirements for the impulse voltage test, the requirement specified Table 1 shall be used. The test voltage related to the rated impulse voltage, when used for testing the clearances, shall be corrected according to corresponding test altitudes according to IEC 60664-1. If clearances have been chosen for inhomogeneous field conditions according to IEC 60664-1:2007, Table F.2, no verification by a voltage withstand test is needed. As an alternative to the impulse voltage test of IEC 60664- 1:2007 (6. 1.2.2.1), the dielectric test with AC voltage (6.1.2.2.2.2) or the dielectric test with DC voltage (6. 1.2.2.2.3) may be used.IEC 63044-3 pdf download.
