Tescom T-300P Series, User Manual

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1) Verify that the UPS’s switches are totally at “0” position.
2) Connect the AC input supply cables coming from the input mains distribution panel to the B terminals as in Fig.
5-2-a,b.
ATTENTION!!! ENSURE CORRECT PHASE SEQUENCE
If there is a phase sequence fault, A21/A39 “ROTATE PHASE” message appears
on the front panel and the UPS can’t work.
THE CORRESPONDING AC INPUTS OF BOTH UPS’s (U3-V3-W3) MUST BE EXACTLY OF THE SAME PHASE.
3)
Connect the UPS output cables from the output terminals to the load distribution panel.
ATTENTION !!! For proper load sharing during parallel operation the cables between the AC
distribution panel and the AC output terminals of one UPS must be exactly the same
size and length as the cables between the distribution panel and the AC output
terminals of the second UPS.
4) Make the connection of the battery groups. Please look at the 5.4.3 Battery Installation item for it.
ATTENTION!!!
Remove the battery fuses before making the connection of the battery circuit
Breaker during the battery installation. (Turn off into “0” (OFF) position)
5) Connect the copper earth bus, which is under the safety earth and the cables power connection.
Note:
The earth and the neutral connections must be in accordance to the local Rules.
Figure 5-2
100-120-150-160-200 kVA UPS Power Connections
A
Output
connections
(To load)
B
Input
connections
C
UPS rectifier and inverter input connections. Normally
these terminals are not used for the input connections.
Split (External) By-pass Connection
a.
Remove the shown links (in the figure)
b. Connect the R-S-T-N cables to the B terminals from
the external by-pass source.
c.
Connect the mains input R-S-T-N cables to
the C terminals.
d. The external by-pass’s voltage and frequency
must be suitable With the UPS’s.
These links
must be
removed for
split bypass
system
Battery
power
connections
U2
V2
W2
N2
U3
V3
W3
N3