Tecnoware EVO DSP TM, Руководство пользователя

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User’s Manual 22 UPS EVO DSP TT
6 Operating Procedures for Parallel System
6.1 Introduction
EVO DSP TM UPS are designed according to high MTBF figures with increased reliability but in case of
necessity, a second (or more) EVO DSP TT UPSs can be connected in parallel redundant configuration
for supplying the very critical load to increase reliability. Maximum of 4pcs of identical power and
specification EVO DSP TT can be connected in parallel.
If power demand increases in a certain UPS application exceeding the power rating of an already
installed stand-alone UPS, then a second (or more) UPS of the same model and power rating can be
added in parallel to the existing UPS to increase the output power capacity.
The AC inputs of all UPSs in the Parallel System are connected to the same mains, and all the AC
outputs are connected to each other. Each UPS has its own battery pack. The critical load is connected
to the common output of the Parallel System. There are also some signal cable connections between
the UPS units necessary for parallel operation, and will be described later.
6.2 Procedure for Commissioning and Start Up (First Installation)
1 First of all be sure each UPS of the Parallel System is equipped with Parallel board and is factory
parallel configured.
2 Before switching on the UPSs, make sure that electrical connections have been made as shown in
diagram below (note: output is ONLY Single-Phase):
Figure - Connections of Parallel UPSs (with split Bypass option)
3 The communication of Parallel System is made through CAN-BUS protocol. Before starting up the
UPSs, make the connection of communication cables between UPSs as per below diagram: