DOWNLOAD JBL ON CALL (serv.man2) Service Manual ↓ Size: 1.63 MB | Pages: 127 in PDF or view online for FREE

 

 

 

 

Page 89 of 99 

ST-06153 

 

IEC 60950-1 / EN 60950-1 

Clause 

Requirement – Test  

Result – Remark  

Verdict 

 

 

TRF No.: IECEN60950_1A 

 
 

3.4.8 

Vertically-mounted disconnect switches and 
circuit breakers are required to have the "on" 
position indicated by the handle in the up 
position. 

No such devices 

N/A 

3.4.11 

For computer room applications, equipment with 
battery systems capable of supplying 750 VA for 
five minutes are required to have a battery 
disconnect means that may be connected to the 
computer room remote power-off circuit. 

 N/A 

4.3.12 

The maximum quantity of flammable liquid stored 
in equipment is required to comply with NFPA 30.

No such materials within the 
EUT 

N/A 

4.3.13 

Equipment with lasers is required to meet the 
Code of Federal Regulations 21 CFR 1040 (and 
the Canadian Radiation Emitting Devices Act, 
REDR C1370). 

No such devices within the EUT 

N/A 

4.7 

For computer room applications, automated 
information storage systems with combustible 
media greater than 27 cubic feet are required to 
have a provision for connection of either 
automatic sprinklers or a gaseous agent 
extinguishing system with an extended discharge.

 N/A 

 

 

4.7.3.1 

For computer room applications, enclosures with 
combustible material measuring greater than 0.9 
m2 or a single dimension greater than 1.8 m are 
required to have a flame spread rating of 50 or 
less. For other applications, enclosures with the 
same dimensions require a flame spread rating of 
200 or less. 

 N/A 

 
 

 

Annex H 

Equipment that produces ionizing radiation is 
required to comply with the Code of Federal 
Regulations, 21 CFR 1020 (and the Canadian 
Radiation Emitting Devices Act, REDR C1370). 

The EUT does not produce 
ionizing radiation 

N/A 

 

 

 

The following key national differences are based 
on requirements other than national regulatory 
requirements. The bi-national standard 
(CAN/CSA-C22.2 No. 60950-1/UL  60950-1, First 
Edition) referenced above should be consulted for 
further details on the national differences 
summarized below. 

 P 

 

 

Sub-
Clause 

National Difference 

 

 

 

 

 

Page 90 of 99 

ST-06153 

 

IEC 60950-1 / EN 60950-1 

Clause 

Requirement – Test  

Result – Remark  

Verdict 

 

 

TRF No.: IECEN60950_1A 

 
 

1.5.1 

Components of equipment must be suitable for 
the application, and must comply with the 
requirements of the equipment standard and the 
applicable national (Canadian and/or U.S.) 
component or material standards, as far as they 
may apply. 

The acceptance will be based on the following: 

I) A component Certified by a Canadian or U.S. 
National Certification Body (NCB) to a Canadian 
or U.S. component standard will be checked for 
correct application and use in accordance with its 
specified rating. Where necessary, it will also be 
subject to the applicable tests of the equipment 
standard. 

J) A component, which has a CB Test Certificate 
for compliance with a relevant IEC component 
standard, will be checked for correct application 
and use in accordance with its specified ratings. 
Where necessary, it will also be subject to the 
applicable tests of the equipment standard, and 
to the applicable tests of the Canadian and/or 
U.S. component or material standard, under the 
conditions occurring in the equipment. 

K) A component, which has no approval as in A) 
or B) above or which is used not in accordance 
with its specified ratings, will be subject to the 
applicable tests of the equipment standard, and 
to the applicable tests of the Canadian and/or 
U.S. component or material standard, under the 
conditions occurring in the equipment. 

L) Some components may require annual re-
testing, which may be carried out by the 
manufacturer, CSA International or another 
laboratory. 

 P 

2.3.1 

For TNV-2 and TNV-3 circuits with other than 
ringing signals and with voltages exceeding 42.4 
Vpeak or 60 Vd.c., the maximum acceptable 
current through a 2000 ohm resistor (or greater) 
connected across the voltage source with other 
loads disconnected is 7.1 mA peak or 30 mA d.c. 
under normal operating conditions. 

No TNV circuit within the EUT 

N/A 

2.3.2 

In the event of a single fault, the limits of 2.2.3 
apply to SELV Circuits and accessible conductive 
parts. 

 N/A 

 

 

 

 

Page 91 of 99 

ST-06153 

 

IEC 60950-1 / EN 60950-1 

Clause 

Requirement – Test  

Result – Remark  

Verdict 

 

 

TRF No.: IECEN60950_1A 

 
 

2.6.3.3 

When subject to impedance testing, protective 
earthing and bonding are required to be 
subjected to the additional test conditions 
specified. 

Class II equipment 

N/A 

 

 

3.2.1.2 

Equipment connected to a centralized d.c. power 
system, and having one pole of the DC mains 
input terminal connected to the main protective 
earthing terminal in the equipment, is required to 
comply with special earthing, wiring, marking and 
installation instructions requirements. 

 N/A 

4.2.8.1 

Enclosures around CRTs with a face diameter of 
160 mm or more are required to reduce the risk of 
injury due to the implosion of the CRT. 

No such devices within the EUT 

N/A 

4.3.2 

Equipment with handles is required to comply 
with special loading tests. 

No such devices within the EUT 

N/A 

5.1.8.3 

Equipment intended to receive 
telecommunication ringing signals is required to 
comply with a special touch current measurement 
tests. 

No TNV circuit within the EUT 

N/A 

6.2.1 

Enamel coating on winding wire not considered 
electrical separation unless subjected to special 
investigation. 

 N/A 

6.4 

Equipment intended for connection to 
telecommunication network outside plant cable is 
required to be protected against overvoltage from 
power line crosses in accordance with 6.4 and 
Annex NAC. 

 N/A 

6.5 

Equipment connected to a telecommunications 
network and supplied with an earphone intended 
to be held against, or in the ear is required to 
comply with special acoustic pressure tests. 

 N/A 

M.2 

Continuous ringing signals up to 16 mA only are 
permitted if the equipment is subjected to special 
installation and performance restrictions. 

No TNV circuit within the EUT 

N/A 

 

 

 

 

Page 92 of 99 

ST-06153 

 

IEC 60950-1 / EN 60950-1 

Clause 

Requirement – Test  

Result – Remark  

Verdict 

 

TRF No.: IECEN60950_1A 

 
 
 

   

 

1. Supply tolerance  

Item 1.4.5 of IEC 60950 stipulates the tolerance 
of rated voltage is +6 % and –10 %, while 
GB4943-2001 makes a specification of tolerance 
of +10 % and –10 %. 

 P 

2. Power rating marking 

Item 1.7.1 of IEC 60950 does not specify 
concrete figures of markings of supply voltage 
and frequency, instead, descriptions are given by 
examples. But the examples do not include 
China’s mains voltage. GB4943-2001 stipulates 
that: 

- 

A single rated voltage shall expressed as 220 
V 

- 

When a rated voltage range is given, the 
range shall cover 220 V 

- 

When a variety voltages or rated voltage 
ranges are given, one of them shall be set as 
220 V when dispatched from the factory 

- 

Rated frequency or rated frequency range 
shall be 50 Hz or include 50 Hz 

- 

If a unit is not provided with means of direct 
connection to the AC mains supply, it need 
not be marked with any electrical rating 

 P 

3. Plate and warning marking in Chinese 

Item 1.7.12 of GB4943-2001 stipulates: 
instructions and equipment markings related to 
safety shall be in standardized Chinese. 

 P 

4. Power supply plug 

According to China’s particular standard for 
power supply plug, it is added in article 3.2.1 of 
GB4943-2001 that plug connecting equipment 
with AC mains supply shall be in accordance with 
requirements of GB1002. 

 P