Siemens SIMOCODE pro System Manual page 689

Unbalance protection
Universal current (UC)
Voltage monitoring
Win SIMOCODE DP converter
SIMOCODE pro
GWA 4NEB 631 6050-22 DS 03
The extent of the phase unbalance can be monitored and
transmitted to the control system. A definable and delayable
response can be tripped when an adjustable limit has been
overshot. If phase unbalance is greater than 50%, a reduction
in the tripping time according to the overload characteristic
curve takes place automatically, since the heat development
in motors increases under asymmetrical conditions.
Universal current Feature of devices that can be operated
with both AC and DC current.
See monitoring voltage
Software tool for converting "old" Win SIMOCODE DP
parameter files (3UF5 device series) into SIMOCODE ES
parameter files for SIMOCODE pro.
Glossary
Glossary-17