DOWNLOAD JBL ENCOUNTER (serv.man4) Service Manual ↓ Size: 943.15 KB | Pages: 76 in PDF or view online for FREE

Model
ENCOUNTER (serv.man4)
Pages
76
Size
943.15 KB
Type
PDF
Document
EMC - CB Certificate
Brand
Device
Audio
File
encounter-sm4.pdf
Date
PREV: JBL ENCOUNTER (serv.man3) EMC - CB Certificate

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- Page 13 of 51 - 
 
 
 
www.nemko.com
 
Report No.  27772 
 
 
TRF No.:IECEN60950_1B 
 
 
2.2 
SELV CIRCUITS 
Class III equipment powered by 
an SELV source. 
—  
2.2.1 
General requirements 
SELV limits are not exceeded 
under normal condition and after 
a single fault.
 
P 
2.2.2 
Voltages under normal conditions (V)................ : 
Within SELV limits.
 
P
 
2.2.3 
Voltages under fault conditions (V).................... : 
Within SELV limits.
 
P
 
2.2.3.1 
Separation by double insulation or reinforced 
insulation (method 1)  
Class III equipment powered by 
an SELV source.
 
N/A
 
2.2.3.2 
Separation by earthed screen (method 2) 
 
N/A
 
2.2.3.3 
Protection by earthing of the SELV circuit 
(method 3) 
 
N/A
 
2.2.4 
Connection of SELV circuits to other circuits ...... : 
SELV circuits are only 
connected to other SELV 
circuits.
 
P
 
 
2.3 
TNV CIRCUITS 
 
— 
2.3.1 
Limits 
Refer below:
 
N/A
 
 
Type of TNV circuits ........................................ : 
No TNV circuits in the 
equipment. 
N/A
 
2.3.2 
Separation from other circuits and from accessible 
parts 
No TNV circuits in the 
equipment. 
N/A 
 
Insulation employed ......................................... : 
 
— 
2.3.3 
Separation from hazardous voltages 
No TNV circuits in the 
equipment. 
N/A 
 
Insulation employed ......................................... : 
 
— 
2.3.4 
Connection of TNV circuits to other circuits 
No TNV circuits in the 
equipment. 
N/A 
 
Insulation employed ......................................... : 
 
— 
2.3.5 
Test for operating voltages generated externally  
No TNV circuits in the 
equipment. 
N/A 
 
 
- Page 14 of 51 - 
 
 
 
www.nemko.com
 
Report No.  27772 
 
 
TRF No.:IECEN60950_1B 
 
 
2.4 
LIMITED CURRENT CIRCUITS  
No limited current circuits 
N/A 
2.4.1 
General requirements 
 
—
 
2.4.2 
Limit values 
 
—
 
 
Frequency (Hz) ............................................... : 
 
— 
 
Measured current (mA) .................................... : 
 
— 
 
Measured voltage (V) ....................................... : 
 
— 
 
Measured capacitance (
µ
F).............................. : 
 
— 
2.4.3 
Connection of limited current circuits to other 
circuits 
 
N/A
 
 
2.5 
LIMITED POWER SOURCES 
Class III equipment powered by 
Limited Power Source. 
P 
 
Inherently limited output 
Limited power source not 
considered for this product. 
N/A
 
 
Impedance limited output 
 
—
 
 
Overcurrent protective device limited output 
Class III equipment powered by 
an SELV source. 
—
 
 
Regulating network limited output under normal 
operating and single fault condition 
 
—
 
 
Regulating network limited output under normal 
operating conditions and overcurrent protective 
device limited output under single fault condition 
 
—
 
 
Output voltage (V), output current (A), apparent 
power (VA) .................................................... : 
 
— 
 
Current rating of overcurrent protective device (A) 
 
— 
 
2.6 
PROVISIONS FOR EARTHING AND BONDING 
 
— 
2.6.1 
Protective earthing 
Class III equipment.
 
N/A 
2.6.2 
Functional earthing 
Class III equipment.
 
N/A 
2.6.3 
Protective earthing and protective bonding 
conductors 
Class III equipment.
 
N/A 
2.6.3.1 
General 
 
—
 
2.6.3.2 
Size of protective earthing conductors 
 
—
 
 
Rated current (A), cross-sectional area (mm
2
), 
AWG.............................................................. : 
 
— 
2.6.3.3 
Size of protective bonding conductors 
 
—
 
 
Rated current (A), cross-sectional area (mm
2
), 
AWG.............................................................. : 
 
— 
 
 
- Page 15 of 51 - 
 
 
 
www.nemko.com
 
Report No.  27772 
 
 
TRF No.:IECEN60950_1B 
 
2.6.3.4 
Resistance (
Ω
) of earthing conductors and their 
terminations, test current (A) ............................ : 
 
—
 
2.6.3.5 
Colour of insulation .......................................... : 
 
—
 
 
2.6.4 
Terminals 
Class III equipment.
 
N/A 
2.6.4.1 
General 
Refer below:
 
—
 
2.6.4.2 
Protective earthing and bonding terminals 
Refer below:
 
—
 
 
Rated current (A), type and nominal thread 
diameter (mm) ................................................. : 
Rated current of equipment: 
 
— 
2.6.4.3 
Separation of the protective earthing conductor 
from protective bonding conductors 
The equipment is provided with 
an appliance inlet.
 
—
 
2.6.5 
Integrity of protective earthing 
Class III equipment.
 
N/A 
2.6.5.1 
Interconnection of equipment 
Interconnected equipment is 
properly earthed.
 
—
 
2.6.5.2 
Components in protective earthing conductors and 
protective bonding conductors 
There are no switches or 
overcurrent protective devices in 
the protective earthing / bonding 
conductors.
 
—
 
2.6.5.3 
Disconnection of protective earth  
It is not possible to disconnect 
protective earth without 
disconnecting mains.
 
—
 
2.6.5.4 
Parts that can be removed by an operator 
No operator removable parts 
except supply cord.
 
—
 
2.6.5.5 
Parts removed during servicing 
Protective earthed parts cannot 
be removed in a way which 
impair safety.
 
—
 
2.6.5.6 
Corrosion resistance 
No risk of corrosion.
 
—
 
2.6.5.7 
Screws for protective bonding 
Adequate connection of 
protective bonding.
 
—
 
2.6.5.8 
Reliance on telecommunication network or cable 
distribution system 
Protective earthing does not rely 
on a telecommunication network.
 
—
 
 
2.7 
OVERCURRENT AND EARTH FAULT 
PROTECTION IN PRIMARY CIRCUITS 
 
— 
2.7.1 
Basic requirements 
Class III equipment.
 
N/A
 
 
Instructions when protection relies on building 
installation 
Class III equipment.
 
N/A
 
2.7.2 
Faults not covered in 5.3 
Class III equipment.
 
N/A
 
2.7.3 
Short-circuit backup protection 
 
N/A
 
2.7.4 
Number and location of protective devices  ........ : 
 
N/A
 
 
 
- Page 16 of 51 - 
 
 
 
www.nemko.com
 
Report No.  27772 
 
 
TRF No.:IECEN60950_1B 
 
2.7.5 
Protection by several devices 
Class III equipment.
 
N/A
 
2.7.6 
Warning to service persons  ............................. : 
 
N/A
 
 
2.8 
SAFETY INTERLOCKS  
No safety interlocks.  
N/A 
2.8.1 
General principles 
 
—
 
2.8.2 
Protection requirements 
No safety interlocks.
 
—
 
2.8.3 
Inadvertent reactivation 
No safety interlocks.
 
—
 
2.8.4 
Fail-safe operation 
No safety interlocks.
 
—
 
2.8.5 
Moving parts 
No moving parts.
 
—
 
2.8.6 
Overriding  
No safety interlocks.
 
—
 
 
2.9 
ELECTRICAL INSULATION 
Class III equipment, only 
Functional insulation used. 
— 
2.9.1 
Properties of insulating materials 
Neither natural rubber, materials 
containing asbestos nor 
hygroscopic materials are used 
as insulation. No driving belts or  
couplings used.
 
N/A 
2.9.2 
Humidity conditioning 
No hygroscopic materials used.
 
N/A
 
 
Humidity (%)  .................................................. : 
 
— 
 
Temperature (
°
C)  ........................................... : 
 
— 
2.9.3 
Grade of insulation 
Insulation is considered to be 
functional.
 
P
 
 
2.10 
CLEARANCES, CREEPAGE DISTANCES AND 
DISTANCES THROUGH INSULATION 
Class III equipment, only 
Functional insulation used. 
— 
2.10.1 
General  
See the following clauses:
 
—
 
2.10.2 
Determination of working voltage 
Class III equipment, only 
Functional insulation used.
 
N/A
 
2.10.3 
Clearances 
Class III equipment, only 
Functional insulation used.
 
—
 
2.10.3.1 
General 
Refer below:
 
—
 
2.10.3.2 
Clearances in primary circuits 
Class III equipment.  
N/A
 
2.10.3.3 
Clearances in secondary circuits 
Only functional insulation in 
secondary circuits, ref. 5.3.4.  
P
 
2.10.3.4 
Measurement of transient voltage levels 
Measurement not relevant.
 
N/A
 
 
 
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