JUMO 709062 TYA 202 - Three-Phase Power Controller Operating Manual - Manual (Page 70)

6 Special device functions
68 2012-12-31/00561073 [SCR power switch TYA202]
For heating elements with a temperature coefficient TC
∼
1 the limit value can
be taken directly from the following tables:
Undercurrent
The specifications in % refer to load current changes
Overcurrent
The specifications in % refer to load current changes
Number of
heating elements Star connection with sepa-
rate star points without neu-
tral conductor Star connection with com-
mon star points without
neutral conductor Delta connection
5 10 % - -
4 13 % 10 % -
3 17 % 13 % 10 %
2 25 % 20 % 12 %
1 50 % 50 % 21 %
Example:
2 heating
elements
L3 L2 L1 L3 L2 L1 L3 L2 L1
Number of
heating elements Star connection without neutral
conductor Delta connection
6 - -
5 10 % -
4 10 % 10 %
3 14 % 13 %
2 25 % 26%
Example for 2
heating elements
L3 L2 L1 L3 L2 L1
H
As a general rule, load monitoring does not yet take place during the soft start
phase (which can last for longer due to active current limiting) as the standard
operating range of the load has not yet been reached.Teach-In cannot yet be per-
formed in this phase either.