56 0.32 0. This requirement fulfilled protection
devices 100 equipment (application mm² terminal blocks).2 The requirements refer exclusively cabinets for switchgear.26
Cross section/mm² 120 150 185 240 300
Electrical resistance/mΩ 0.6 Installation and tight fit terminal blocks secured the requirements and relevant tests according the product standard.
9 Insulation properties: 10. conductor terminals are subjected
circuit test short-time withstand current the context the type test according 60947-7-2. measurement calculation.3.78 0.2.7 Terminal blocks bear the inscriptions, like determined section the product standard.
6 Installation equipment 10.
properties insulation material: 10.42 0.4 The required clearances are based 60664-1 and are identical with the values for the
dimensioning terminal blocks according 60947-7-1(2, 3).8 Secured selection the terminal block well its type test according 60947-7-1(2).2.
12 Electromagnetic compatibility 10. Characteristics proved Section Adaptability for terminal blocks
1 Strength material and parts: 10.
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.Checklist design verification according IEC/EN 61439
Design verification for terminal blocks and their accessories
Nr.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.1
• Resilience extreme heat and fire due 10.
• Surge voltage strength 10.2 The requirements refer exclusively parts the switchgear and controlgear assembly. According the section 10.9.7 Not relevant, has judged the end use for terminal blocks.9.2.3 Terminal blocks are designated for the installation cabinets, thus not relevant
3 Clearances 10.2.5.
10 Temperature rise limits 10.
8 Connections for conductors inserted from outside 10.2.2 measurement the end use.
2 Degree protection and enclosures 10.
7 Internal circuits and connections 10.
• Thermal stability 10.5 Covered the type test for modular conductor terminals according 60947-7-2.4 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).12 Not relevant, because terminal blocks are seen passive components according the product standard 60947-7-1(2, 3).83 1.12 0.10 0.17 0.
4 Creepage distances 10.14 0.
conductive parts the assembly and the
protective circuit
• Short-circuit withstand strength the protective 10.3 Not relevant, has judged the end use.33 1.2.4 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.
13 Mechanical operation 10.5 2.13 Not relevant
C.
to internal electrical effects Inserted components like terminal blocks are not affected.2 61439-1,
the switchgear manufacturer does not have provide evidence this case.11.5 Terminal blocks are designated for the installation cabinets, thus not relevant
• Impact test 10.
5 Protection against electric shock and 10.5 35
Electrical resistance/mΩ 1.06
11 Short-circuit withstand strength 10.3 The verification for the switchgear and controlgear assembly takes place the end use for the terminal blocks.5.9 Tests the insulation properties are part the dimensioning type tested terminal blocks
• Operating frequency dielectric strength 10.
• Resistance radiation 10.
integrity protective circuits The quality and consistency the conductor connection has verified resistance
• Effective continuity between the exposed 10.6 Terminal blocks are designated for the installation cabinets, thus not relevant
• Marking 10.3 Terminal blocks are designated for the installation appropriate cabinets.21 0.2 according 60947-7-1(2).g.00 0.
The verification has provided for the respective application, e.2.32 3029140000
Installation
C
Standards and industries
.09 0.2.
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.08 0. 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).2
• Corrosion resistance 10.3.
The final assessment has made the end use
