ON STAGE 400P (serv.man4) - JBL Audio EMC - CB Certificate (repair manual). Page 77

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IEC 60950-1 (ed.1)
 
Page 5 of 7
 - 
 
 
www.nemko.com
 
Report No.  100711 
 
 
Clause 
Requirement – Test 
Result - Remark 
Ver-
dict
U.2.1 
Replacement: 
Electric strength
 
The test sample is prepared according to IEC 60851-
5:1997, 4.4.1 (for a twisted pair). The sample is then 
subjected to the test of 5.2.2 of this standard, with a 
test voltage not less than twice the appropriate voltage 
in table 5B (see 5.2.2) of this standard. However, the 
minimum values shall be as follows: 
- for BASIC INSULATION or SUPPLEMENTARY 
INSULATION, 3000 V, or; 
- for REINFORCED INSULATION, 6000 V. 
Not TIW used. 
 
U.2.2 
Replacement: 
Flexibility and adherence
 
Test 8 of IEC 60851-3:1996, 5.1.1, using the mandrel 
diameters of table U.1. The test sample is then 
examined in accordance with IEC 60851-3:1996, 
5.1.1.4, followed by the test of 5.2.2 of this standard 
except applying the test voltage between the wire and 
the mandrel. A test voltage shall not be less than twice 
the appropriate voltage in table 5B (see 5.2.2) of this 
standard. However, the minimum values shall be as 
follows: 
- for BASIC INSULATION or SUPPLEMENTARY 
INSULATION, 1500 V, or; 
- for REINFORCED INSULATION, 3000 V. 
Not TIW used. 
 
Table U.1 
Replacement: 
Mandrel diameter 
 
The tension to be applied to the wire during winding on 
the mandrel is calculated from the wire diameter to be 
equivalent to 118 Mpa ± 10 % (118 N/mm2 ± 10 %). 
Not TIW used. 
 
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