JUMO 709061/8-01-020, Operating Manual

Page: 80 / 125

6 Special device functions
78 V1.04/EN/00561071 [Thyristor Power Switch TYA 201]]
The specifications in % refer to load current changes
Overcurrent
The specifications in % refer to load current changes
1 50 % 50 % 21 %
Example:
2 heating
elements
Number of
heating ele-
ments Single-phase
operation Star connection
with separate star
points without neu-
tral conductor Star connection with
common star points
without neutral con-
ductor Delta connection
N L1
L3 L2 L1
L3 L2 L1
L3 L2 L1
Number of
heating ele-
ments Single-phase op-
eration Star connec-
tion without
neutral conduc-
tor Delta connection
6 10 % - -
5 13 % 10 % -
4 17 % 10 % 10 %
3 25 % 14 % 13 %
2 50 % 25 % 26 %
Example for 2
heating ele-
ments
N L1
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 an extended period due to active current limiting) as
the standard working range of the load has not yet been reached. Teach-In
cannot yet be performed in this phase either.