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5 Covered the type test for modular conductor terminals according 60947-7-2. conductor terminals are subjected
circuit test short-time withstand current the context the type test according 60947-7-2.
7 Internal circuits and connections 10.2.
• Thermal stability 10.6 Installation and tight fit terminal blocks secured the requirements and relevant tests according the product standard.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).3 Terminal blocks are designated for the installation appropriate cabinets.3 Terminal blocks are designated for the installation cabinets, thus not relevant
3 Clearances 10.08 0.3.13 Not relevant
C.
6 Installation equipment 10.5 Terminal blocks are designated for the installation cabinets, thus not relevant
• Impact test 10.
• Resistance radiation 10.5.
4 Creepage distances 10.17 0.6 Terminal blocks are designated for the installation cabinets, thus not relevant
• Marking 10.2.3.
12 Electromagnetic compatibility 10.4 Terminal blocks are designated for the installation cabinets, thus not relevant
• Lifting 10.10 The rated values for terminal blocks according 60947-1(2 ,3) can used for the dimensioning the temperature rise limits.3 The verification for the switchgear and controlgear assembly takes place the end use for the terminal blocks.9.1
• Resilience extreme heat and fire due 10.34 CAT1 Version 2025
Installation
C
Standards and industries
.
properties insulation material: 10.12 Not relevant, because terminal blocks are seen passive components according the product standard 60947-7-1(2, 3).
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 1.2 according 60947-7-1(2).9.12 0.06
11 Short-circuit withstand strength 10.2 The requirements refer exclusively parts the switchgear and controlgear assembly. Characteristics proved Section Adaptability for terminal blocks
1 Strength material and parts: 10.
conductive parts the assembly and the
protective circuit
• Short-circuit withstand strength the protective 10.
The verification has provided for the respective application, e.09 0.2.
integrity protective circuits The quality and consistency the conductor connection has verified resistance
• Effective continuity between the exposed 10. According the section 10.14 0.00 0.33 1.2 61439-1,
the switchgear manufacturer does not have provide evidence this case.
5 Protection against electric shock and 10.2 measurement the end use.2.7 Terminal blocks bear the inscriptions, like determined section the product standard.56 0. measurement calculation.g.83 1.32 0.5.5 2.
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.
• Surge voltage strength 10.2.
to internal electrical effects Inserted components like terminal blocks are not affected.3 Not relevant, has judged the end use.
13 Mechanical operation 10.8 Secured selection the terminal block well its type test according 60947-7-1(2).
The final assessment has made the end use.2 The requirements refer exclusively cabinets for switchgear.2.42 0.26
Cross section/mm² 120 150 185 240 300
Electrical resistance/mΩ 0.
9 Insulation properties: 10.11 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.7 Not relevant, has judged the end use for terminal blocks.21 0.
2 Degree protection and enclosures 10.Checklist design verification according IEC/EN 61439
Design verification for terminal blocks and their accessories
Nr.
8 Connections for conductors inserted from outside 10.5 35
Electrical resistance/mΩ 1. 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).10 0.2
• Corrosion resistance 10.2.11.
10 Temperature rise limits 10.78 0. This requirement fulfilled protection
devices 100 equipment (application mm² terminal blocks).2.9 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)
