WÄRTSILÄ JOVYCUBE 160
BAX 5157
- 7 -
2 Description of the system
Ensuring a reliable power supply is one of many major issues when using electronic data processing
and process control systems. The main causes of many interruptions to power supply are:
Spikes produced by switching devices on the mains distribution
High frequency superposition caused by welding machines, fluorescent lights, photocopiers and
more
Voltage variations due to fast load variations in big inductive consumers (lifts, transformers,
machinery, etc.)
Voltage failures due to disturbances in the mains supply
Frequency variations caused by the use of separate power supply units
The range of disturbances extends from data corruption to memory leaks and from hardware failure to
production stoppages. Therefore, the quality of the power supply is key to the reliability of electronic
data processing equipment. The perfect solution for a secure, uninterrupted power supply for critical
consumers is thus the UPS (
U
ninterruptible
P
ower
S
upply). The UPS:
Generates a constant supply voltage and frequency
Reduces mains disturbances and feedback
Guarantees an uninterruptible power supply to connected consumers for a specified period
during a mains failure
In comparison with conventional power sources such as the mains power supply or generators*, the
cutting edge technology featured in UPS systems in the
JOVYCUBE
series brings the following
outstanding advantages:
Minimum mains feedback caused by active IGBT rectifiers
Extended communication interfaces
•
Serial port (USB) to read out the alarm history and for software updates
•
SNMP adapter for remote monitoring, data exchange via a LAN connection
•
MODBUS adapter for remote monitoring, data transfer using MODBUS protocol via
RS485 interface
•
Enhanced capacity and redundancy based on installation of additional modules
•
Relay card with alarm messages for industrial remote monitoring via floating contacts
NOTE:
Operation of a UPS or other electronic consumers using a generator assumes that before
installing the complete system the planner has established whether the generator can be
used in conjunction with power electronics.
Some generators are designed such that operation with power electronics consumers is
not possible due to the additional loading with harmonics, power factor and commutation
notches. In some cases faults may occur such as voltage unbalance, a tendency to
oscillate and the shutting down of the generator. It may help to ask the generator
manufacturer about this and, if necessary change the regulator on the generator or
incorporate damper windings in the generator from the outset.
i
