2.
The verification has provided for the respective application, e.9.4 Terminal blocks are designated for the installation cabinets, thus not relevant
• Lifting 10.
2 Degree protection and enclosures 10.
8 Connections for conductors inserted from outside 10.Checklist design verification according IEC/EN 61439
Design verification for terminal blocks and their accessories
Nr.2 measurement the end use. The switchgear manufacturer has provide
evidence for the maximum forward current declaration the terminal block’s Ipk
(surge current strength, which the terminal block able conduct without being destroyed).
• Thermal stability 10.10 The rated values for terminal blocks according 60947-1(2 ,3) can used for the dimensioning the temperature rise limits.6 Installation and tight fit terminal blocks secured the requirements and relevant tests according the product standard.13 Not relevant
C.
7 Internal circuits and connections 10.26
Cross section/mm² 120 150 185 240 300
Electrical resistance/mΩ 0.3 Terminal blocks are designated for the installation appropriate cabinets.2.
• Resistance radiation 10.6 Terminal blocks are designated for the installation cabinets, thus not relevant
• Marking 10.7 Terminal blocks bear the inscriptions, like determined section the product standard.2.56 0. This requirement fulfilled protection
devices 100 equipment (application mm² terminal blocks).
6 Installation equipment 10. Characteristics proved Section Adaptability for terminal blocks
1 Strength material and parts: 10.12 0.
10 Temperature rise limits 10.2
• Corrosion resistance 10.2 The requirements refer exclusively cabinets for switchgear.5.2.2 according 60947-7-1(2).12 Not relevant, because terminal blocks are seen passive components according the product standard 60947-7-1(2, 3).7 Not relevant, has judged the end use for terminal blocks.5.
properties insulation material: 10.5 2.08 0.9 Tests the insulation properties are part the dimensioning type tested terminal blocks
• Operating frequency dielectric strength 10.4 The required clearances are based 60664-1 and are identical with the values for the
dimensioning terminal blocks according 60947-7-1(2, 3).3 Not relevant, has judged the end use.21 0.2.g.
• Surge voltage strength 10. conductor terminals are subjected
circuit test short-time withstand current the context the type test according 60947-7-2. measurement calculation.
The final assessment has made the end use.2 The requirements refer exclusively parts the switchgear and controlgear assembly.
to internal electrical effects Inserted components like terminal blocks are not affected.
The calculation the terminal block‘s power dissipation can take place the application means
of the electrical resistance function current: Ploss
= Rmax
* I2
Following maximum resistances per electrical potential according to
EN 60947-7-1(2, subject the cross section for the terminal block are permitted:
Cross section/mm² 1.78 0.4 The required creepage distances are based 60664-1 and are identical with the values for the
dimensioning terminal blocks according 60947-7-1(2, 3).33 1.
For cross sections from mm²
In sectors after current-limiting ms) protection devices <=630 (Icp >10 kA)
At unaffected short-circuit current the grid Icp >10 (in front the switchgear), forward current will flow
of the period with upstream protection device.00 0.3 The verification for the switchgear and controlgear assembly takes place the end use for the terminal blocks.11.
4 Creepage distances 10.2.
12 Electromagnetic compatibility 10.3 Terminal blocks are designated for the installation cabinets, thus not relevant
3 Clearances 10.
conductive parts the assembly and the
protective circuit
• Short-circuit withstand strength the protective 10.2.11 For cross sections mm²
In sectors after current-limiting (5ms) protections devices <100 (fort Icp <10 kA)
At unaffected short-circuit current the grid Icp <=10 (in front the switchgear), forward
current with maximum will arise with upstream protection device.83 1.
5 Protection against electric shock and 10.32 3029140000
Installation
C
Standards and industries
.09 0.3.5 Covered the type test for modular conductor terminals according 60947-7-2. According the section 10.2 61439-1,
the switchgear manufacturer does not have provide evidence this case.2.17 0.5 35
Electrical resistance/mΩ 1.
integrity protective circuits The quality and consistency the conductor connection has verified resistance
• Effective continuity between the exposed 10.8 Secured selection the terminal block well its type test according 60947-7-1(2).
13 Mechanical operation 10.06
11 Short-circuit withstand strength 10.14 0.1
• Resilience extreme heat and fire due 10.32 0.3.42 0.10 0.9.
9 Insulation properties: 10.5 Terminal blocks are designated for the installation cabinets, thus not relevant
• Impact test 10
