GLA 55 (serv.man3) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 89

 

 

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Report No.  115972 

 

 

 

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 used. 

N/A 

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. 

NOTE: “twice” in the 6th line is deleted – ref. 
confirmation by Japan NCB – JQA. 

Not used. 

N/A 

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 %). 

No used. 

N/A