Nietz SSN Series User Manual

NIetz Electric Co.,Ltd Soft starter SSN/SSA serie User Manual
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12.2 Overload
Overload protection function is in used during the process of starting and running
● There are 8 protection levels. The default is 4(same as 15 in IEC60974-4-2 standard). User
can set this parameter according to de load situation, the smaller this parameter is, the shorter
the starting time of protection is, vice verse.
● The level 2 can’t be selected(same as 10A in IEC60974-4-2 standard).for detail see the table
12-2 .
Standard curve graph of IEC60974-4-2
Table 12-2
Overload protection
levels
IEC60947-4-2 5Ie 4Ie 3Ie 2Ie 1.5Ie 1.2Ie 1.05Ie
1 Class 2 1.5s 2.5s 4.5S 13S 35S 180S —
2 Class 10A 4s 6S 12S 30S 80S 460S —
3 Class 10 8s 13S 23S 60S 180S 800S —
4 Class 15 12s 18S 32S 90S 230S 1200S —
5 Class 20 16s 25S 46S 130S 320S 1650S —
6 Class 25 18s 30S 58S 170S 520S 2200S —
7 Class 30 23s 36S 68S 190S 650S 2800S —
8 Class Special 28s 45S 82S 224S — — —

Nietz SSN Series Specifications

General

Brand	Nietz
Model	SSN Series
Category	Controller
Language	English