IEC 60851-2 pdf download

IEC 60851-2 pdf download Winding wires – Test methods – Part 2: Determination of dimensions
1 Scope
This part of IEC 60851 specifies the following method of test:
– Test 4: Dimensions.
For definitions, general notes on methods of test and the complete series of methods of test for winding wires, see IEC 60851 -1 .
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60851 -1 , Winding wires – Test methods – Part 1: General
IEC 60851 -5:2008, Winding wires – Test methods – Part 5: Electrical properties
3 Test 4: Dimensions
3.1 Equipment
3.1.1 Round and rectangular wire
The equipment used shall have a resolution of 2 μm or less for wires over 0,200 mm and for wires up to and including 0,200 mm, a resolution of 1 μm or less. Both mechanical contact and optical non-contact micrometers may be used. If mechanical contact micrometers are used, the ratio of measuring force and anvil diameter shall be in accordance with the range as given in Table 1 a and Table 1 b. The diameter range of the spindle and anvil is also given in Table 1 a and Table 1 b. If optical micrometers are used, the average of the readings shall be recorded as the diameter of the conductor. If a specific measuring equipment must be used, it shall be agreed upon between the customer and the supplier.
3.1.2 Bunched wire
The measurement shall be made with a polished conical mandrel having dimensions as shown in Figure 1 .
3.2 Procedure
3.2.1 Conductor dimension
3.2.1 .1 Round wire
NOTE See Table 2.
3.2.1 .1 .1 Nominal conductor diameter over 0,063 mm and up to and including 0,200 mm
From a straight piece of wire the insulation shall be removed at three places, 1 m apart, by any method that does not damage the conductor. One measurement shall be made at these
three places.
The three single values shall be reported. The mean value represents the conductor diameter.
3.2.1 .1 .2 Nominal conductor diameter over 0,200 mm
From a straight piece of wire, the insulation shall be removed by any method that does not damage the conductor. Three measurements of the bare conductor diameter shall be made at points evenly distributed around the circumference of the conductor.
The three single values shall be reported. The mean value represents the conductor diameter.
3.2.1 .2 Rectangular wire
The insulation shall be removed at the three places used for measurements in 3.2.5.2 by any method that does not damage the conductor. At each place one measurement of the two dimensions of the conductor shall be made.