Iek ВА47-100 2Р 20А 10кА C [7/11] Complete set
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Iek ВА47-100 2Р 20А 10кА C [7/11] Complete set

Iek ВА47-100 2Р 20А 10кА C [7/11] Complete set
7
Tripping characteristics change
Tripping characteristics change of circuit breakers depends on two main
factors: the number of side-by-side (placed close to each other) MCBs and
ambient temperature.
When non breaking current for side-by-side MCBs is calculated in
depending on their number (N) and the ambient temperature (t °C), correction
coefficients are introduced:
Ê
n
– coefficient taking into account the number of side-by-side circuit
breakers; shall be determined according to the diagram introduced in Figure 3 of
Appendix 1;
Ê
t
– coefficient taking into account the ambient temperature; shall be
determined according to the diagram introduced in Figure 4 of Appendix 1.
Non-tripping (I
non-trip
) current for the side-by-side MCBs depending on their
number and the ambient temperature is determined according to following
formula:
I
non-trip
=1,13 ln Ê
n
Ê
t
,
where 1,13l
n
– conventional non tripping current of the breaker equal
to 1,13 of its rated current (indicated on the marking) at the adjustment
temperature of thermal release – 30 °Ñ (according to EN 60898-1).
Complete Set
VA47-100 – 1 pcs.;
passport – 1 pcs. per a multiple package.
Terms & Conditions of Safe and Efficient Use and Mounting
Mounting and operation should be carried out in accordance with the acting
federal requirements of electrical safety rules as well as other normative and
technical documentation regulating exploitation, adjustment and maintenance of
electrical facilities.
Mounting, connection and putting VA47-100 into operation should be
performed only by qualified electrical personnel.
VA47-100 are installed onto T-rails 35 mm wide according to the
requirements of IEC 60715.
Under normal operation after the expiration of its service life, the device
poses no hazard in further exploitation.
ATTENTION! Before carrying out servicing or maintenance works, make
sure of the absence of line voltage.
IT IS RECOMMENDED to tighten contact terminals once every 6 months
because their pressure tends to weaken because of cyclic variations of the
ambient temperature and metal flow of the tightened conductors.
If the product fails, it should be replaced.
ATTENTION! More technical information can be found on the website
www.iek.ru.

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iEK Tripping characteristics change Tripping characteristics change of circuit breakers depends on two main factors the number of side by side placed close to each other MCBs and ambient temperature When non breaking current for side by side MCBs is calculated in depending on their number N and the ambient temperature t C correction coefficients are introduced Kn coefficient taking into account the number of side by side circuit breakers shall be determined according to the diagram introduced in Figures of Appendix 1 K coefficient taking into account the ambient temperature shall be determined according to the diagram introduced in Figure 4 of Appendix 1 Non tripping Inon irip current for the side by side MCBs depending on their number and the ambient temperature is determined according to following formula lnon ldp 1 13 In Kp Kt where 1 13ln conventional non tripping current of the breaker equal to 1 13 of its rated current indicated on the marking at the adjustment temperature of thermal release 30 C according to EN 60898 1 Complete Set VA47 100 1 pcs passport 1 pcs per a multiple package Terms Conditions of Safe and Efficient Use and Mounting Mounting and operation should be carried out in accordance with the acting federal requirements of electrical safety rules as well as other normative and technical documentation regulating exploitation adjustment and maintenance of electrical facilities Mounting connection and putting VA47 100 into operation should be performed onlyby qualified electrical personnel VA47 100are installed onto T rails35 mm wide according to the requirements of IEC 60715 Under normal operation afterthe expiration of its service life the device poses no hazard in further exploitation ATTENTION Before carrying out servicing or maintenance works make sure of the absence of line voltage IT IS RECOMMENDED to tighten contact terminals once every 6 months because their pressure tends to weaken because of cyclic variations of the ambient temperature and metal flow of the tightened conductors If the product fails it should be replaced ATTENTION More technical information can be found on thewebsite www iek ru 7

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