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IEC 60065, 6th edition : 1998

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- Page 20 of 38 - 

 

 

   

 Order 

No. 

34019

 

 

 

 

14.3.3-5 Transformer 

construction 

See below. 

14.3.3.2 

Transformers meet the constructional 
requirements : 

See below. 

Transformer/motor Insulation 

Insulation Test 

Flashover 

Creepage 

distances 

Part No/markings 

between 

resistance voltage  Breakdown

and 

clearances 

 

 

  M Ohm 

kV(60)s 

voltage kV 

Measured 

Required  

≥ 6 mm   

≥ 6 mm   

≥ 6 mm   

≥ 6 mm   

 

Components / construction   

 

Windings on two separate bobbins. The bobbins are 
placed in an insulating housing with two 
compartments, one above the other. Bobbin thickness: 
> 0,4mm. 

 

Components / construction 

   

Windings on single bobbins. Center wall provided 
between primary and secondary windings. Satisfactory 
constructed. Bobbin thickness: > 0,4mm. 

Transformer/motor Insulation Thickness 

(mm) 

Material 

Dielectric strength test 

Part No/markings 

between 

      X 

 

for each combination of 

 

 

    Number 

 

two (2) layers  

14.3.4.1 

Class II transformers have adequate 
separation between hazardous live 
windings and windings intended to 
be connected to accessible 
conductive parts (double or 
reinforced insulation)   

Double or reinforced insulation between primary and 
secondary windings according to clause 8.8. 
 

 

Coil formers and partition walls 
≥ 0,4 mm   

The bobbin fulfils the requirement of reinforced insulation, 
thickness: 

≥ 0,4 mm. 

 - 

IEC 60065, 6th edition : 1998

 - 

- Page 21 of 38 - 

 

 

   

 Order 

No. 

34019

 

 

 

 

14.3.4.2 

Class I transformers, with basic 
insulation and protective screening 
only if all 7 conditions of 14.3.4.2 are 
met  

 

14.3.4.3 

Separating transformers with at least 
basic insulation   

 

14.3.5.1 

Class II transformers have adequate 
insulation between hazardous live 
parts and accessible parts (double 
or reinforced insulation)   

Double or reinforced insulation between hazardous live 
windings and accessible conductive parts. 

 

Coil formers and partition walls 
≥ 0,4 mm   

The bobbin fulfils the requirement of reinforced insulation, 
thickness: 

≥ 0,4 mm. 

14.3.5.2 

Class I transformers have adequate 
insulation between hazardous live 
parts and accessible conductive 
parts or those conductive parts or 
protective screens connected to a 
protective earth terminal   

 

 

Winding wires connected to 
protective earth have adequate 
current-carrying capacity   

 

14.4 

High voltage components 

 

 

 

High-voltage components and 
assemblies: U > 4 kV (peak) 
separately approved   

No high voltage components used 
 

 

Component meets category FV 1 of 
IEC 60 707   

 

14.4.1 

High voltage transformers and 
multipliers tested as part of the 
submission  

 

14.5 Protective 

devices 

 

 

 

Protective devices used within their 
ratings  

Yes,  
Thermal link and fuse 

 

External clearance and creepage 
distances appropriate for the voltage 
across the device when opened   

Adequate external clearance and creepage distance 

14.5.1.1 

a) Thermal cut-outs separately 
approved  

None 
 

 

b) Thermal cut-outs tested as part of 
the submission   

 

14.5.1.2 

a) Thermal links separately 
approved  

Manufacturer / type: 
Sub transformer -    Uchihashi Estec / 423 
Main transformer -  Anzen Dengu Co / L8 
Certified by: VDE according to IEC60691 

 

b) Thermal links tested as part of the 
apparatus  

 

 - 

IEC 60065, 6th edition : 1998

 - 

- Page 22 of 38 - 

 

 

   

 Order 

No. 

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14.5.1.3 

Thermal devices resettable by 
soldering  

No such thermal device 

14.5.2.1 

Fuse-links in the mains circuit 
according to IEC 60 127   

See list below 

Circuit Manufacturer 

Dimen- 

Approved

Marking of 

Marking 

Current 

diagram 

 

sions 

by 

rated current, 

close to 

through 

informa- 

 

 

 

pre-arcing time 

the com- 

the fuse   

tion 

 

 

 

and current 

ponent 

in normal 

Part No 

 

 

 

characteristic 

 

operation   

φ 

×20 mm 

×20 mm 

14.5.2.2 

Correct marking of fuse-links 
adjacent to holder      

Correct marking applied close to the fuse, see table 
above. 

14.5.2.3 

Not possible to connect fuses in 
parallel    

No fuse holder so designed that fuse-links can be 
connected in parallel 

14.5.2.4 

Not possible to touch hazardous live 
parts when replacing fuse-links 
without the use of a tool      

No replacement of fuse possible by hand. 
 

14.5.3 

PTC-S thermistors comply with 
IEC 60 738   

No PTC’s 

 

PTC-S devices (>15 W) category 
FV 1 or better   

 

14.5.4 

Other protective devises. 
Circuit protectors have adequate 
breaking capacity and their position 
is correctly marked   

No other protective devices 

14.6 Switches 

 

 

 

Manually operated mechanical 
switch (MOMS) conductively 
connected to the mains

 

 

 

Part No 

Function 

Manufacturer 

Type 

Rated 
Marking 

 All- 

One 

Name 

Trademark 

 

V 

A 

Surge 

 pole 

pole 

 

 

 

  

current 

 

 

 

 

 

 

 

 

 

 

 - 

IEC 60065, 6th edition : 1998

 - 

- Page 23 of 38 - 

 

 

   

 Order 

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14.6.1 

Permanently connected equipment 
provided with an all-pole mains 
switch unless 5.4.2 is met   

Apparatus is not permanently connected 
 

14.6.2 

Manually operated mechanical 
switch (MOMS), required where 
power consumption > 15 W and/or 
peak voltage > 4 kV 

Yes. MOMS required. See table above. 
 

 

Switch readily accessible and not in 
mains cord   

Switch located on the front and readily accessible 
 

 

Exception for automatic switching   

 

 

Exception for continuous operation   

 

14.6.3 

Manually operated mechanical 
switch (MOMS): Switch indication / 
On position clearly discernible   

The display is illuminated. 
 

 

Indication by marking meets Cl. 5   

Yes 

 

Indication of the OFF position   

Off-position marked with “OFF” 

14.6.4 

Manually operated mechanical 
switch (MOMS) fitted. Is there a 
Stand-by mode      

Yes 
 

 

Stand-by mode clearly discernible    

LED indication 

 

Exception for low Stand-by current 
< 0,7 mA (peak)   

 

14.6.5 

Components bridging contacts of 
mains switches comply with 14.1 a) 
or 14.2.2   

Yes,  
Switch for C853, and relay for C904. 
See also clause 14.2. 

14.6.6.a. 

Manually operated mechanical 
switches (MOMS) separately 
approved to IEC 61 058-1   

Yes.  
- Mains switch, certified by VDE, 
- Mains relay, certified by SEMKO. 

14.6.6.b. 

Manually operated mechanical 
switch (MOMS) tested as part of the 
equipment complies with 14.6.7, 
14.6.10 and 20.1.4 and meets 
14.6.8 and/or 14.6.9 and Annex G 
(G1.1)  

 

 

Flame test for mains switches   

 

14.6.7 Endurance 

test 

Switch and Relay, separately certified. 

14.6.8 

Temperature rise in mains switch 

Switch and Relay 

14.6.9 

Dielectric strength test 

Switch and Relay 

14.6.10 

Surge current for mains switches 
also controlling mains socket-outlets

Measured mains relay / switch surge current  : 33A 
Socket-outlet through current (50W) 

: 20A 

Mains switch / relay controlling total current 

: 53A 

 
The measured surge current value is less than rated 
surge current rating of the mains relay and switch. OK. 
Ref. clause 7.