Siemens 6SE7036-1EE85-1AA0 - Short-Circuit Withstand Capability for Sizes H and K

09.02 Connection
Siemens AG 6SE7087-6AK85-1AA0
3-9
Rectifier/Regenerating Unit Operating instructions
Unit Built-in branch fuses F11 to F26
Order No. Siemens SITOR Bussmann
US standard
6SE70 A Type A Type
38-2EH85-1AA0 630 3NE3336 700 170M4717
41-0EH85-1AA0 800 3NE3338-8 900 170M5715
37-7FH85-1AA0 560 3NE3335 630 170M5696
41-0FH85-1AA0 800 3NE3338-8 900 170M5699
37-7HH85-1AA0 560 3NE3335 630 170M5696
41-0HH85-1AA0 800 3NE3338-8 900 170M5699
Built-in branch fuses F111 to F262
41-3EK85-1AA0 630 3NE3336 —
41-3EK85-1AD0 630 3NE3336 —
41-8EK85-1AA0 800 3NE3338-8 —
41-8EK85-1AD0 800 3NE3338-8 —
41-3FK85-1AA0 560 3NE3335 630 170M5696
41-3FK85-1AD0 560 3NE3335 630 170M5696
41-5FK85-1AA0 710 3NE3337-8 630 170M5696
41-5FK85-1AD0 710 3NE3337-8 630 170M5696
41-8FK85-1AA0 800 3NE3338-8 800 170M5698
41-8FK85-1AD0 800 3NE3338-8 800 170M5698
41-3HK85-1AA0 560 3NE3335 630 170M5696
41-3HK85-1AD0 560 3NE3335 630 170M5696
41-5HK85-1AA0 710 3NE3337-8 630 170M5696
41-5HK85-1AD0 710 3NE3337-8 630 170M5696
41-8HK85-1AA0 800 3NE3338-8 800 170M5698
41-8HK85-1AD0 800 3NE3338-8 800 170M5698
Table 3.5 Built-in branch fuses
3.1.1 Short-circuit withstand capability for sizes H and K
In the event of a line-side short-circuit in front of the super-fast built-in fuses, the power fed in from the supply
depends on the protective devices provided on the system-side (NH fuses or circuit-breakers).
To ensure that the forces and temperatures that result from short-circuits of this type can be kept within
acceptable limits for the units, the following values calculated in accordance with DIN VDE 0660 Part 500 must
be complied with by the supply and by the fuses or circuit-breakers connected before the unit.
Size H:
Rated short-time withstand current: I
cw
= 27.86 kA / 1s or I
cw
= 88.1 kA / 0.1s
Rated surge withstand current: I
pk
=85 kA
The power rails must be mechanically buffered to absorb the short-circuit forces directly in front of their entry
point into the unit.
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