AS NZS IEC 60947.5.9:2015 pdf free

AS NZS IEC 60947.5.9:2015 pdf free.Low-voltage switchgear and controlgear
The utilization categories as given in Table 2 of IEC 60947-5-2 are considered standard. Any other type of application shall be based on agreement between manufacturer and user, but information given in the manufacturer’s documentation may constitute such an agreement.
Marking shall be indelible and easily legible， and shall not be placed on parts normally removable in service. If the dimension of the housing of the flow rate switch is too small, the marking may be placed on the cord or on a tag permanently attached to the cord, located no further than 100 mm from the body of the device.
Flow rate switches complying with this standard shall be capable of operating under the following standard conditions.
If the conditions for operation differ from those given in this standard, they shall be based on agreement between manufacturer and user, but information given in the manufacturer’s documentation may constitute such an agreement.
Unless otherwise stated by the manufacturer, a flow rate switch is intended for installation under environmental conditions of pollution degree 3 as defined in 6.1.3.2 of IEC 60947-1.However, other pollution degrees may apply, depending upon the micro-environment.
A special agreement shall be made between the user and the manufacturer if the conditions during transport and storage， e.g. temperature and humidity conditions, differ from those defined in 6. 1.
a) Making and breaking capacities under normal conditions
The switching elements shall be capable of making and breaking currents without failure under the conditions stated in Table 4 of IEC 60947-5-2，for the relevant utilization categories and the number of operations indicated,under the conditions specified in 8.3.3.5.
b) Making and breaking capacities under abnormal conditions
The switching elements shall be capable of making and breaking currents without failure under the conditions stated in Table 5 of IEC 60947-5-2，for the relevant utilization categories and the number of operations under the conditions specified in 8.3.3.5.AS NZS IEC 60947.5.9 pdf free download.