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Page 45 of 52 

Report No.: 209462 

 

 

TRF No. IEC60065K 

Temperature Rise dT of Part 

dT (K) 

Limit max  
dT (K)   *) 

Test Condition No. 

$) 

Input test No

7 

$$) 

Input test No 

28 

- 

Front cover (metallic) 

4.1 

7.3 65 

Top cover above main transf.(metallic) 

23.4 

32.8 65 

Top cover above Heat-sink (metallic) 

33.6 

36.5 65 

Ambient 

21.9 

o

C 

19.7 

o

C  

 

 

 

 

*) Temperature rise limits for tropical climate is 10K less. Comply 

**) Minus (-) 10 K applied for thermo-couple method for windings. 
 

 

Page 46 of 52 

Report No.: 209462 

 

 

TRF No. IEC60065K 

Rated supply voltage:  240V 

Pollution degree .. : 2 

Material Group .... :  IIIb 

2 N force on internal parts applied: 

Yes 

30 N force on outside of conductive enclosure applied: 

Yes 

Circuits conductively connected to the mains (use Tables 8, 9 and 11): see note below. 

 

Type of  
Insulation 

Position/ Location 

Working Voltage 

Clearance (mm)

Creepage (mm) 

Comm.

1 

2 

V rms 

V peak 

Min 

Actual

Min 

Actual 

Basic Live  Neutral 240 

V 340 

V 2.0 4.0 2.5 4.0 1), 

2) 

Basic CX91  CX91  240 

V 340 

V 2.0 2.9 2.5 2.9 1), 

3) 

Basic D901  D902  240 

V 340 

V 2.0 3.0 2.5 3.0 1), 

3) 

Reinforce 

CY91 

CY91  240 

V 340 

V 4.0 8.0 5.0 8.0 1) 

Reinforce 

CY94  Sec. 

GND 

188 

V 348 

V 4.0 6.1 5.0 6.1 1) 

Reinforce TF91 

(Pin 4) 
Primary 

TF91 
(Pin 10) 
Secondary 

260 V 
*) 

624 V 
*) 

4.6 6.1 5.4 

 

**) 

6.1 1) 

Reinforce TF92 

(Pin 8) 
Primary 

TF92 
(Pin 12) 
Secondary 

193 

V 348 

V 4.0 6.0 5.0 6.0 1) 

Reinforce TF93 

(Pin 1) 
Primary 

TF93 
(Pin 11) 
Secondary 

310 V 
*) 

810 V 
*) 

5.2 7.2 6.6 

 

**) 

7.2 1) 

Reinforce PC95 

(Pin 2) 
Primary 

PC95 
(Pin 3) 
Secondary 

155 V 
*) 

348 V 
*) 

4.0 7.5 5.0 7.5 1) 

Reinforce PC92 

(Pin 3) 
Primary 

PC92 
(Pin 1) 
Secondary 

191 V 
*) 

352 V 
*) 

4.0 6.1 5.0 6.1 1) 

Reinforce 

Primary 

Secondary 

240 

V 340 

V 4.0 7.7 5.0 > 

7.7 

4) 

 

 

 

 

 

 

 

 

 

 

*) The highest working voltage for transformer and optocoupler between primary and secondary. 
**) Linear interpolation applied for creepage distance. 

Comments: 1) Measured on pcb. 

2)   Before mains fuse. 
3)   After rated 6.3A mains fuse and before bridge diode  
      (part of directly connected to the mains) 
4)  Measured between primary solder pin to metal chassis (bottom frame). 
 

 

Page 47 of 52 

Report No.: 209462 

 

 

TRF No. IEC60065K 

Notes: 
1. Secondary circuits of Class II apparatus which have connector terminals that could be earthed (e.g. 
antenna signal input), are subjected to the requirements for circuits conductively connected to the mains in 
Tables 8 and 9. 
2. Floating secondary circuits of Class I apparatus which have connector terminals that could be earthed 
(e.g. antenna signal input), are subjected to the requirements for circuits conductively connected to the 
mains in Tables 8 and 9 unless the floating secondary circuit is separated from the primary circuits by an 
earthed metal screen (e.g. in the power transformer), or the floating secondary circuit is connected to earth 
via a component such as a capacitor. 
3. For insufficient clearances and creepage distances from secondary to secondary circuits and from 
secondary circuits to earth, see Cl. 4.3.1, 4.3.2 and 11.2. 
4. If the minimum creepage distance in Table 11 is less than the minimum required clearance in Tables 8, 
9 or 10 as required, then the value for clearance is used as the minimum creepage distance . 
"Min" = minimum required.

 

"Actual = Actual dimensions measured.

 

 

 

Page 48 of 52 

Report No.: 209462 

 

 

TRF No. IEC60065K 

-TF91 transformer (CLT9Z076ZE or CLT9Z081ZE) 
Min. 6.0 mm (width) barrier frame of bobbin or tapes provided in bottom side of the transformer. 
Min. 4.0 mm (width) barrier frame of bobbin or tapes provided in top side of the transformer. 
-TF92 transformer (CLT9Z077ZE or CLT9Z082ZE) 
Min. 6.5 mm (width) barrier tapes provided in bottom side of the transformer. 
Min. 3.5 mm (width) barrier tapes provided in top side of the transformer. 
-TF93 transformer (CLT9Z078ZE or CLT9Z083ZE) 
Min. 6.0 mm (width) barrier tapes provided in side for coiled winding of the transformer. 
Min. 7.0 mm (width) barrier tapes provided on the other side for coiled winding of the transformer. 

- Components 

/ 

construction 

TF91 transformer 
(CLT9Z076ZE or 
CLT9Z081ZE) 

Windings on single bobbins. Min. 3 layers of insulation 
between primary and secondary winding / iron core. 
Thickness of each layer: 0.025 mm. Voltage test: 3 kV. 
Bobbin thickness: >0.4 mm. 
 
**) Max. working voltage: 624 Vpeak / 260 Vrms 

- Components 

/ 

construction 

TF92 transformer 
(CLT9Z077ZE or 
CLT9Z082ZE) 

Windings on single bobbins. Min. 3 layers of insulation 
between primary and secondary winding / iron core. 
Thickness of each layer: 0.025 mm. Voltage test: 3 kV. 
Bobbin thickness: >0.4 mm. 
 
**) Max. working voltage: 624 Vpeak / 286 Vrms 

- Components 

/ 

construction 

TF93 transformer 
(CLT9Z078ZE or 
CLT9Z083ZE) 

Windings on single bobbins. Min. 3 layers of insulation 
between primary and secondary winding / iron core. 
Thickness of each layer: 0.025 mm. Voltage test: 3 kV. 
Bobbin thickness: >0.4 mm. 
 
**) Max. working voltage: 810 Vpeak / 310 Vrms 

*) Linear interpolation applied for creepage distance. 
**) Measured highest working voltage for transformers between primary and secondary.