IEC 60204-31-2013 pdf free

IEC 60204-31-2013 pdf free.Safety of machinery – Electrical equipment of machines – Part 31: Particular safety and EMC requirements for sewing machines, units and systems.
It does not cover all the requirements (e.g. guarding, interlocking, control) that are necessary to safeguard persons from hazards other than electrical hazards and which are specified in other standards.
This part applies to sewing units and systems which are installed in dry and well-kept clean locations and which process dry sewing material, as in the clothing industry. Where sewing units and systems are used in other than dry and well-kept clean locations, more stringent measures can be necessary, which need to be agreed between manufacturer and customer.
The noise emission of electrical and electronic equipment for sewing machines is not considered to be a relevant hazard. Therefore this standard does not contain any specific requirements on noise.
2 Normative references
This clause of Part 1 is applicable except as follows:
Additional references:
IEC 60204-1:2005, Safety of machinery — Electrical equipment of machines — Part 1: General requirements Amendment 1:2008
IEC 60364-4-41, Low-voltage electrical installations — Part 4-4 1: Protection for safety — Protection against electric shock
IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems — Part 1: Principles, requirements and tests
3 Terms and definitions
This clause of Part 1 is applicable except as follows:
Additional definitions:
3.101 sewing machine machine designed to produce one or more stitch types with one or more sewing threads
4 General requirements
This clause of Part 1 is applicable except as follows:
4.4.2 Electromagnetic compatibility (EMC)
Replacement:
Replace this subclause with Annex AA.
4.4.4 Humidity
Modification:
Instead of the first paragraph, the following applies:
The electrical equipment shall be capable of operating in the intended manner in the humidity
conditions covered by class 3K3 as specified in IEC 60721-3-3.
5 Incoming supply conductor terminations and devices for disconnecting and switching off
This clause of Part 1 is applicable except as follows:
Incoming supply conductor terminations
Modification: Add after the first sentence of the first paragraph:
Each sewing unit shall have only one incoming supply connection.
Each sewing system consisting of at least two sewing units that are not interlinked by means of control systems may have its own incoming supply connection for each sewing unit; however, if a failure of one sewing unit can cause a hazard, the sewing system shall have only one incoming supply connection.
5.3 Supply disconnecting (isolating) device
5.3.1 General Addition:
When sewing units are interconnected by means of control systems to form a sewing system, only one supply disconnecting device shall be provided.IEC 60204-31 pdf free download.