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IEC 60065, 6th edition : 1998

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- Page 21 of 44 - 

 

 

   

 

Order No. 

200211174

 

 

 

 

14.3 

Inductors and windings 

 

 

14.3.1 

Transformers and inductors marked 
with manufacturer's name and type    

Type:   
“55286170NR” for Main transformer, 
“5528634ANR” for Sub transformer, 
”55286320NR” for Standby transformer. 
 
Manufacturer’s name identification:   
“POWER TECHNICS CO.” for Main transformer, 
”KS” for Sub and standby transformers. 

14.3.2. 

Transformer category 

Isolating transformer 
 

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   

 

Components / construction 

   

Concentric winding on an isolate iron core. At least 3 
layers of insulation between primary and secondary 
winding. 

 

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. 

Transformer/mot
or 

Insulation 

Thickness (mm) 

Material 

Dielectric strength test 

Part 
No/markings 

between 

            X 

 

for each combination of 

 

 

    Number 

 

two (2) layers   

 

- 

IEC 60065, 6th edition : 1998

 - 

- Page 22 of 44 - 

 

 

   

 

Order No. 

200211174

 

 

 

 

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 Sub and Standby transformer bobbin fulfils the 
requirement of reinforced insulation, see table above for 
bobbin thickness. 

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 Sub and Standby transformer bobbin fulfils the 
requirement of reinforced insulation, see table above for 
bobbin thickness. 

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   

Thermal cut-out, thermal links and fuses 

 

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IEC 60065, 6th edition : 1998

 - 

- Page 23 of 44 - 

 

 

   

 

Order No. 

200211174

 

 

 

 

 

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

 

14.5.1.1 

a) Thermal cut-outs separately 
approved   

Automatic: 
Manuf.: Seki Controls Co., Ltd. 
Type: ST-22 
Certified by: VDE 

 

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

 

14.5.1.2 

a) Thermal links separately approved   

Manuf.: Tamura Kaken (Anzen Dengu Co.) 
Type: VS13 
Certified by: VDE 
According to IEC60691 

 

b) Thermal links tested as part of the 
apparatus   

 

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   

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 

 

- 

IEC 60065, 6th edition : 1998

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- Page 24 of 44 - 

 

 

   

 

Order No. 

200211174

 

 

 

 

 

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 

 

 

 

 

 

 

 

 

 

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