REQUIREMENTSSafety critical components must comply with the relevant safety standard for that component.
i-Spec presents specific information on power supplies, transformers, mains switches, appliance inlets, fuses, capacitors, power supply connection and cords
, wiring
, PCB's, optocouplers, lasers and LED's, lithium batteries, motors and fans.Appendix P of IEC 60950 references acceptable
standards for use in component approvals. The following table lists some of these standards. Note that national variants may require the use of national standards, rather
than IEC standards for component approvals.
Component |
IEC |
UL |
CSA |
Switches |
IEC 61058-1 |
UL 20UL917 UL1054 |
CSA C22.2 No. 55CSA C22.2 No. 111 CSA C22.2 No. 177 |
Fuses |
IEC 60127-1 |
UL 248-1, -4, -8, -10, -12, -15 |
CSA C22.2 Nos. 248, 248.1, 248.4, 248.8, 248.10, 248.12, 248.15 |
Attachment Plugs, Receptacles and Connectors |
IEC 83IEC 60309 IEC 60320 |
UL 498 |
CSA C22.2 Nos. 42, 182.1, 182.2, 182.3 |
Flexible Cords and Cables |
IEC 227IEC 245 IEC 885-1 |
UL 62 |
CAN/CSA C22.2 Nos 49, 96 |
Cathode Ray Tubes |
IEC 65 |
UL 1418 |
CAN/CSA C22.2 No. 228 |
Motors |
|
UL 1004 |
CSA C22.2 No. 100 |
Fans |
|
UL 507 |
CSA C22.2 No.113 |
EMI filters |
|
UL 1283 |
CSA C22.2 No. 8 |
Power Supplies |
IEC 60950 |
UL 1950UL 1310 |
CAN/CSA C22.2 Nos. 234, 950, 223 |
Transformers |
|
UL 1585 |
CSA C22.2 No. 66 |
Optical Isolators |
IEC 60747-5 |
UL 1577 |
CSA C22.2 No. 1 |
Marking and labelling |
|
UL 969 |
CAN/CSA C22.2 No 0.15 |
DESIGN TIPS
Unless a safety-critical component is custom designed, it is advantageous to use a component which already has the relevant safety approvals. Make sure the component
has the approvals you need for your target markets (see Submitting a product to a Test House for Approval)
.If you plan to submit your product to a Test House, you will probably be required to submit a copy of the safety
approval license of the component together with your product. The Test House needs the certificate to authenticate the approval and to ensure that you use the component in accordance with any Conditions of
Acceptability which may be specified as part of the approval. The supplier of the component should be able to get you a copy of the license.
REFERENCEComplete requirements are given in IEC 60950, Clause 1.5
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