IEC 61439-4-2012 pdf free.Low-voltage switchgear and controlgear assemblies – Part 4: Particular requirements for assemblies for construction sites (ACS).
4 Symbols and abbreviations This clause of Part I is applicable.
5 Interface characteristics
This clause of Part 1 is applicable except as follows.
5.3.1 Rated current of the ASSEMBLY (mA) Replacement of title and text:
5.3.1 Rated current of an ACS (mA)
The rated current of an ACS is that of its incoming circuit.
This current shall be carried without the temperature rise of the individual parts exceeding the
limits specified in 9.2 of Part 1.
5.4 Rated diversity factor (RDF)
Addition:
The assumed loading of the outgoing circuits of the ACS or group of outgoing circuits shall be declared by the ASSEMBLY manufacturer, and may be based on the values in Table 101.
When the manufacturer does not declare any RDF the values of Table 101 apply.
5.6 Other characteristics
Replacement:
The following characteristics shall be declared:
a) the function(s) assigned by the manufacturer (see 3.101);
b) the external design (see 3.3):
C) the mobility (see 3,5.101 and 3.5.102):
d) the degree of protection (see 8.2);
e) the method of mounting, for example fixed or removable parts (see 8.5.1 and 8.5.2);
f) protection against electric shock (see 8.4):
g) the resistance to corrosion (see 10.2.2.101):
h) special service conditions, if applicable (see 7.2);
6 Information
This clause of Part 1 is applicable except as follows.
6.1 ASSEMBLY designation marking Replacement of title and text:
6.1 ACS designation marking
The ASSEMBLY manufacturer shall provide each ACS with one or more labels, marked in a durable manner and located in a place such that they are visible and legible when the ACS is installed and in operation.
Compliance is checked according to the test of 10.2.7 and by inspection.
The following information regarding the ACS shall be provided on the label(s):
a) ASSEMBLY manufacturers name or trade mark (see 3.10.2):
b) type designation or identification number or any other means of identification, making it possible to obtain relevant information from the ASSEMBLY manufacturer:
c) means of identifying date of manufacture:
d) 1EC61439-4;
e) type of current (and the frequency in the case of a.c.);
1) rated voltage (Un) (of the ACS) (see 5.2.1);
g) rated current of the ACS (mA) (see 5.3.1);
h) degree of protection (see 8.2);
i) the weight where this exceeds 30 kg.
If the indication of the name or trademark of the manufacturer appears on the ACS it need not
be given on the nameplate.
6.2.1 Information relating to the ASSEMBLY
Replacement of title and text:
6.2.1 Information relating to the ACS
The following additional information, where applicable, shall be provided In the ASSEMBLY manufacturer’s technical documentation supplied with the ACS:
a) rated operational voltage (U.) (of a circuit) (see 5.2.2):
b) rated impulse withstand voltage (Vimp) (see 5.2.4);
c) rated insulation voltage (U) (see 5.2.3).IEC 61439-4 pdf free download.