Functions
6.7 Substation monitoring
Motor
starter (3RK1308‑0**00‑0CP0)
Equipment Manual, 11/2019, A5E34821005002A/RS-AC/003
99
Settings
Table 6- 4
Settings for asymmetry monitoring
Device parameters
Default setting
Setting range
Response to asymmetry
Tripping
•
Warn
•
Tripping
6.7.8
Short-circuit protection (fuses)
Description
The ET 200SP motor starter is equipped with integrated safety fuses as short-circuit
protection. Short-circuit protection is implemented both between a phase and ground
(= ground fault), and between two phases.
Switching performance
The ET 200SP motor starter switches off short-circuits in the motor or in the cables. The
ET 200SP motor starter complies with the requirements of type of coordination 1
(IEC 60947-4-2).
On tested assemblies, the type of coordination defines the permissible condition of devices
following a short-circuit. Type of coordination 1 means that the load feeder is non-operational
after a short circuit has been cleared.
Messages and actions
After the fuse responds, the "Residual current detection" message is output in the case of
non-fail-safe motor starters. The "Switching element defective" message is issued in the
case of fail-safe motor starters. Then replace the starter.
