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- Page 17 of 19  - 

 

 

   

 

Order No.  23171 

 

4.5 

THERMAL REQUIREMENTS 

 

4.5.1 

Temperature rises 

No thermostats, temp. limiters or thermal cut-outs. 

4.5.2 

Resistance to abnormal heat 

No such parts. 

 

Table 4.5.1 

 

Test voltage  

18 VDC 

Parts on the circuit board:  Thermocouples were used to measure 
temperatures.  

 

∆

t measured K 

U = 18.0 VDC  

∆

t allowed 

K 

C10 (rated 105 ºC) 

67 

80  

C8 (rated 105ºC) 

70 

80 

C23 (rated 105 ºC) 

42 

80 

C63 (rated 85ºC) 

29 

60 

C27 (rated 85ºC) 

36 

60 

U12 

32 

— 

67 

70  

Ambient 

25 

Comments 

Tmra = 25°C.  

 

4.6 

OPENINGS IN ENCLOSURES 

Class III equipment. 

 

4.7  

RESISTANCE TO FIRE  

Class III equipment, supplied by Limited Power Source 
complying with Sub-clause 2.5. 

 

5.1 

ELECTRICAL REQUIREMENTS 
AND SIMULATED ABNORMAL 
CONDITIONS 

Class III equipment. 

 

5.2 

ELECTRIC STRENGTH  

Class III equipment. 

 
 

 

 

 

 

- Page 18 of 19  - 

 

 

   

 

Order No.  23171 

 

 

5.3 

ABNORMAL OPERATING AND 
FAULT CONDITIONS  

 

5.3.1 

Protection against overload and 
abnormal operation 

See the enclosed fault condition test. 

5.3.2 

Motors 

There are no motors in the equipment. 

5.3.3 

Transformers 

There are no safety transformers in the equipment. 

5.3.4 

Functional Insulation 

Complies with a) and c). 

5.3.5 

Electromechanical components 

No electromechanical components. 

5.3.6 

Simulation of faults 

See the enclosed fault condition test. 

5.3.7 

Unattended equipment 

No thermostats, temperature limiters or thermal cut-outs. 

5.3.8 

Compliance criteria for abnormal 
operating and fault conditions 

Refer below: 

5.3.8.1 

During the tests 

No fire or molten metal occurred and no deformation of 
enclosure during the tests. 

5.3.8.2 

After the tests 

No apparent effect from fault test. 

 

 

 

 

- Page 19 of 19  - 

 

 

   

 

Order No.  23171 

 

 

5.3.6 

FAULT CONDITION TESTS  

 

Ambient temperature  

   25°C 

F No 

Comp. 
No 

Fault  

Test 
voltage  
(V) 

Test 
time 

Fuse No 

Current  
(A) 

Mains power/temperatures/results 

1 

Enclosure 

Blocked 
acoustic 
port 

18 VDC  

2.5 hours 

0.395 

No effect.  No significant rise in 
temperatures.  No hazard. 

F No = Fault Number, S-c = Short-circuit, Dis = Disconnection, O/l = Overload.

 

 

 

ELECTRICAL DATA (in normal 
conditions) 

 

I rated 
(A) 

U in  
(V) 

Frequency 
(Hz) 

P in  
(W) 

I in measured 
(A) 

Conditions/status 

1A 

18 V  

DC 

9.9  

0.58 

Refer to Sub clause 1.2.2.1 

Comments 

 

 

6 

CONNECTION TO 
TELECOMMUNICATION 
NETWORKS  

No TNV circuits in the equipment. 

 

ANNEX A 

TESTS FOR RESISTANCE TO 
HEAT AND FIRE  

No additional testing required.   
Components adequately rated.  

 

ANNEX B 

MOTOR TESTS UNDER 
ABNORMAL CONDITIONS 

No motors provided. 

 

ANNEX C 

TRANSFORMERS 

No isolating transformers in the equipment. 

 

ANNEX H 

IONIZING RADIATION 

No ionizing radiation. 

 

APPENDIX  

BATTERIES (4.3.8) 

Equipment not powered by batteries. 

 

 

 

 

APPENDIX 

EN 60950:2000  

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Order No.  23171 

 

APPENDIX    EN 60950:2000 

(IEC Publication 60950, 3rd edition, 1999) 
CENELEC Common Modifications, Special National Conditions, National Deviations and Other 
Information  

EXPLANATION FOR ABBREVIATIONS  
C = CENELEC Common Modification, S = Special National Condition,  A = National Deviation,  
F = Other Information;  AT = Austria, GB = Great Britain, CH = Switzerland, DE = Germany, DK = Denmark,  
ES = Spain, FI = Finland ,  FR = France, IE = Ireland, N O = Norway, SE = Sweden, ALL = All CENELEC Countries 
P = Pass, F = Fail, N = Not applicable; — = No verdict required; placed in the column to the right 

1.2.4.1 S 

(DK) 

In Denmark, certain types of Class I 

appliances (see Sub-clause 3.2.1) may be 
provided with a plug not establishing earthing 
continuity when inserted into Danish socket-
outlets.  

Class III equipment. 

1.5.1 A 

(CH, SE) 

Add the following:  

NOTE: Switches containing mercury such as 
thermostats, relays and level controllers are not 
allowed.  

There are no components containing 
mercury in the equipment. 

1.5.8 S 

(NO) 

In Norway, due to the IT power system used, 

capacitors are required to be rated for the 
applicable phase -to-phase voltage (230V)

 

Class III equipment. 

1.7.2 S 

(NO) 

Class I Pluggable Equipment type A 

intended for connection to other equipment or a 
communication network shall, if safety relies on 
connection to protective earth, require a marking 
stating that the equipment must be connected to 
an earthed mains socket-outlet.  

Applicable text is: 
"Apparatet må kun tilkoples jordet stikkontakt" or  
"Jordet stikkontakt skal benyttes når apparatet 
tilkoples datanett"  

Class III equipment with no protective 
earth provided. 

1.7.2 S 

(SE) 

If the separation between the mains and 

SELV terminal relies upon connection to the 
safety earth, the apparatus shall have a marking 
stating that it must be connected to an earthed 
mains socket-outlet. 
The marking text shall be in Swedish and as 
follows: 
"Apparaten skall anslutas till jordat uttag när den 
ansluts till ett nätverk" or "Apparaten skall 
anslutas till jordat uttag". 

Class III equipment with no protective 
earth provided.