COMMITTEE OF TESTING LABORATORIES
IEC SYSTEM FOR CONFIRMITY TESTING AND
CERTIFICATION OF ELECTRICAL EQUIPMENT
TESTING AND MEASURING EQUIPMENT/ALLOWED SUBCONTRACTING
IEC 60439-3:2001-05, Edition 1.2
Low-voltage switchgear and controlgear assemblies Part 3: Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed
in places where unskilled persons have access for their use; Distribution boards
R=Required by Lab
S=May be subcontracted
3PPS=Three Phase Power Supply required
Clause
8.2.1
Measurement/testing
Temperature rise limits
8.2.2
Dielectric properties
8.2.3
Short-circuit withstand strenght
8.2.4.1
July 2006
Effective connection between the exposed
conductive parts of the assembly and the
protective circuit
Testing / measuring equipment / material needed
Load resistors,
Temperature acquisition unit,
Current/voltage source
Impulse voltage generator (1,2/50 µs),
Oscilloscope,
High voltage probe,
AC-voltage source (0 - min. 3,5 kV),
V-meter (min. 3,5 kV)
Short-circuit testing unit for currents higher 10 kA,
Measuring devices for voltage, current, cos ϕ, time, I²t-values
Ω-meter
1/3
Subcontracting
S
R
S
R
IEC 60339-3, ed 1.2
COMMITTEE OF TESTING LABORATORIES
IEC SYSTEM FOR CONFIRMITY TESTING AND
CERTIFICATION OF ELECTRICAL EQUIPMENT
Clause
8.2.4.2
8.2.5
8.2.6
8.2.7
Measurement/testing
Short-circuit withstand strength of the
protective circuit
Clearances and creepage distances
Mechanical operation
Degree of protection
8.2.9
8.2.10
Construction and marking
Impact strength
8.2.11
Resistance to rusting
8.2.12
Resistance of insulating materials to heat
July 2006
Testing / measuring equipment / material needed
Same as for 8.2.3
Sliding gauge
None
Sphere 50 mm diameter,
Jointed test finger,
Test rod 2,5 mm diameter,
Test wire 1,0 mm diameter,
Sphere 12,5 mm diameter,
_____________________________________________________
Dust chamber;
Drip box;
Drip box 15°;
Oscillating tube/spray ± 60° or spray nozzle/spray ± 60°;
Oscillating tube/spray ± 180°;
Water jet hose nozzle - nozzle 6,3 mm diameter,
Water jet hose nozzle - nozzle 12,5 mm diamter,
Immersion tank
None
Cooling chamber,
Spring impact hammer
Ammonium-Chlorid,
Balance,
Refined petrol or methylchloroform,
Climatic chamber,
Heating chamber
Heating chamber,
Ball pressure test apparatus
2/3
Subcontracting
S
R
R
R
___________
S
R
R
R
R
IEC 60339-3, ed 1.2
COMMITTEE OF TESTING LABORATORIES
IEC SYSTEM FOR CONFIRMITY TESTING AND
CERTIFICATION OF ELECTRICAL EQUIPMENT
Clause
8.2.13
8.2.14
8.2.15
Measurement/testing
Resistance of insulating materials to
abnormal heat and to fire
Resistance to humidity
Mechanical strength of fastening means of
enclosures
Testing / measuring equipment / material needed
Glow wire test apparatus
Climatic chamber,
AC-voltage source,
V-meter
Sliding gauge,
Screwdriver or spanner for applying a torque
Subcontracting
R
R
R
Note: The presence of equipment alone does not indicate a satisfactory situation. Assessors must evaluate the equipment design, calibration, uncertainty and
documentation to ensure compliance with the directions of the standard. The requirements of ISO Guide 25 regarding validation are applicable, as the tests of this
standard are not standardized tests.
July 2006
3/3
IEC 60339-3, ed 1.2