Search Results

Filter By

Singapore Standards Package/Series ISO IEC

2944 Results. Sorry, we cannot find result for ("ss 586") , perhaps what you trying to look for are …

IEC 60068-2-2:2007 [Current]

Environmental testing - Part 2-2: Tests - Test B: Dry heat

...ssociated with endurance or reliability, due note shall be taken of IEC publications which give particular recommendations for durations for such tests...
...Customer (name and address) 2...
...Test laboratory (name, address and details of accreditation - if any) 3...

IEC 60068-2-52:2017 [Current]

Environmental testing - Part 2-52: Tests - Test Kb: Salt mist, cyclic (sodium chloride solution)

...ss than 1 h and not more than 2 h...
...The specimen shall be stored under controlled recovery conditions (IEC 60068-1) for not less than 1 h and not more than 2 h...
...ssed air Figure A...

IEC 60068-2-52:2017 RLV [Current]

Environmental testing - Part 2-52: Tests - Test Kb: Salt mist, cyclic (sodium chloride solution)

...5 The removal of the specimen from the salt mist chamber to the humidity chamber shall be carried out so as to minimize the loss of salt solution from the specimen(s)...
...If not, care should be taken to avoid loss of salt solution deposits on the test specimen(s) and to avoid any damage to the test specimen(s) due to manual handling...
...Cross effects of remaining acidified salt solution when consequently using test method 1 to 7 cannot be ignored...

IEC 60077-3:2019 [Current]

Railway applications - Electric equipment for rolling stock - Part 3: Electrotechnical components - Rules for DC circuit-breakers

...1 General Rated values are assigned by the manufacturer but it is not necessary to establish all the ratings listed...
...rated insulation voltage (U Nm ); NOTE 2 When no rated insulation voltage has been assigned to a circuit-breaker, the rated insulation voltage is considered to be equal to the highest value of the rated operational voltage...
...If necessary the time constant values may be defined by agreement between the manufacturer and the user...

IEC 60077-3:2019 RLV [Current]

Railway applications - Electric equipment for rolling stock - Part 3: Electrotechnical components - Rules for DC circuit-breakers

...ssification This clause is intended to list the characteristics of a circuit-breaker on which information is given by the manufacturer and which shall be verified by testing where relevant...
...The circuit breakers are classified: a) according to their operational frequency C1, C2 or C3...
...ssary to state: the kind of device (for example, air circuit-breaker, vacuum circuit-breaker, hybrid circuit- breaker, bi-directional or polarized circuit-breaker); the type of design (see Clause 4); the degree of protection provided by the encl...

IEC 60077-4:2019 [Current]

Railway applications - Electric equipment for rolling stock - Part 4: Electrotechnical components - Rules for AC circuit-breakers

...2 Type of circuit-breaker It is necessary to state: the kind of device (e...
...1 General Rated values are assigned by the manufacturer but it is not necessary to establish all the ratings listed...
...rated insulation voltage (U Nm ); NOTE 2 When no rated insulation voltage has been assigned to a circuit-breaker, the rated insulation voltage is considered to be equal to the highest value of the rated operational voltage...

IEC 60077-4:2019 RLV [Current]

Railway applications - Electric equipment for rolling stock - Part 4: Electrotechnical components - Rules for AC circuit-breakers

...12 recovery voltage voltage which appears across the terminals of a circuit-breaker pole of a switching device or a fuse after the breaking of the current [SOURCE: IEC 60050-441:1984/AMD1:2000, 441-17-25, modified Note has been deleted...
...] NOTE This voltage may be considered in two successive intervals of time, one during which a transient voltage exists, followed by a second one during which the power frequency or the steady-sate recovery voltage alone exists...
...ssumes that the switching device or the fuse, for which the prospective transient recovery voltage is sought, is replaced by an ideal switching device, i...

IEC 60077-5:2019 [Current]

Railway applications - Electric equipment for rolling stock - Part 5: Electrotechnical components - Rules for HV fuses

...No contact force on connections shall be transmitted through insulating material other than ceramic, or other material having mechanical characteristics no less suitable...
...ssed in amperes (A), should be selected from the following values: 0,6; 1; 2; 3; 4; 6; 10; 12; 16; 20; 25; 32; 40; 50; 63; 80; 100; 125; 160; 200; 250; 315; 400; 500; 630; 800 and 1 000...
...If it is necessary to choose lower values or intermediate values or higher values, these values should be selected from the series R10 of ISO 3, and in exceptional cases, from R20 or R40 of ISO 3...

IEC 60077-5:2019 RLV [Current]

Railway applications - Electric equipment for rolling stock - Part 5: Electrotechnical components - Rules for HV fuses

...It shall be possible to replace the fuse-links easily...
...No contact force on connections shall be transmitted through insulating material other than ceramic, or other material having mechanical characteristics no less suitable...
...ssed in amperes (A), should be selected from the following values: 0,6; 1; 2; 3; 4; 6; 10; 12; 16; 20; 25; 32; 40; 50; 63; 80; 100; 125; 160; 200; 250; 315; 400; 500; 630; 800 and 1 000...

IEC 60079-11:2011 [Revised]

Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"

...10 Requirements for assembled printed circuit boards Applicable Applicable, except for consideration of the body of a component as being an uninsulated live part...
...ssible current to which it could be continuously subjected (such as a short to earth)...
...NOTE Requirements for dielectric and separation distances are still addressed, along with applicable safety requirements of the relevant industrial standards...

Page 5 of 295