BS EN IEC 61439-1-2021 Low-voltage switchgear and controlgear assemblies Part 1：General rules 低压开关设备和控制设备组件第1部分: 一般规则（2-2部分）.pdf

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BSENIEC61439-1:2021

IEC61439-1:2020©IEC2020-73-

-otherci『cuits;

-exposed-conductive-parts.

Thistestisnotcar『iedoutonauxiliaryci『cuits:

-whichcontainonlyinsulatedconductorswiththeappropriateinsulationst『engthasstated

bytheirmanufacturers;and

-whicha『eprotectedbyshort-circuitp『otectivedeviceswitha『atingnotexceeding16A;

and

-ifanelectricalfunctiontesthasbeenmadepreviouslyattheratedoperationalvoltagefor

whichtheauxiliarycircuitsaredesigned.

Foranacceptable『esult,thereshallbenodisruptivedischargeduringtheimpulsevoltage

tests.

Someconductorar『angementsretainaconsiderablechargeafte『animpulsetest,andfor

thesecasescareshouldbetakenwhenreversingthepolarity.Toallowthearrangementto

discharge,theuseofappropriatemethods,suchastheapplicationofth『eeimpulsesatabout

80%ofthetestvoltageinthe『eve『sepolaritybeforethetest,isrecommended.

Alternativep。wer-frequencyvoltagetest

Thetestvoltageshallhaveasubstantiallysinusoidalwaveformattheratedfrequencywitha

tole『anceof±25%.

Thehigh-voltagesourceusedforthetestshallbesodesignedthat,whentheoutputterminals

a『eshort-circuitedaftertheoutputvoltagehasbeenadjustedtotheapp『opriatetestvoltage,

theoutputcurrentissufficienttotriptheovercurrentrelayanditisgreate『than100mA.

Theovercurrentrelayshallnottripwhentheoutputcurrentislessthan100mA.

Thevalueofthetestvoltageshallbethatspecifiedin9.1.3

2020-05-08注册

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