DUET 200 (serv.man3) - JBL Audio EMC - CB Certificate (repair manual). Page 58

 

 

- Page 58 of 62 - 

 

 

 Report 

No. 111798 

 
 

IEC 60950-1:2005 / EN 60950-1:2006 

Clause 

Requirement + Test 

Result - Remark 

Verdict

 

 

TRF No. IECEN60950_1C 

 

 

 

4.5 

TABLE: Thermal requirements 

P 

 

Supply voltage (V) ..........................: 

264V / 60Hz 

⎯ 

Maximum measured temperature T of part/at:: 

T (

°C) 

Allowed 

T

max

 (

°C)

Supplied 1KHz sine wave for speakers in computer speaker system and obtain 1/8 Maximum non-clipped 
output power 

Connector J6 

26.8 

55.7 

PCB near U7 

70.4 

155.7 

Heatsink near U7 

83 

-- 

C53 body 

66.1 

70.7 

C36 body 

62.1 

70.7 

C10 body 

38 

70.7 

Plastic enclosure inside near heatsink 

35.6 

-- 

Plastic enclosure outside near top 

24.9 

80.7 

Adaptor 16.9 

80.7 

Ambient 25.7 

-- 

Having a specified maximum ambient temperature of 40°C, the maximum temperatures are calculated 
based upon a (minimum) test temperature of 25.7°C. Temp. limits are adjusted according to Cl. 1.4.12.3. 
Temperature limits include less 10K for thermocouple measurement method. 

Temperature T of winding: 

t

1

 (°C)

R

1

 (

Ω)

t

2

 (°C)

R

2

 (

Ω)

T (

°C) 

Allowed 

T

max

 (

°C)

Insulation 

class 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

supplementary information: