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Eaton 93E Generation 2 UPS 100-200 kVA
(380/400/415V)
1.
Make sure that the UPS system is turned off and all power sources are
removed. See Chapter
2.
For installing the parallel system, see Figure
In a parallel system, the combined input and output cable length should
be in accordance with the following rule. It should be designed to ensure
that wiring impedance from the point of supply to the UPS input and from
the UPS output to the load connection for each UPS module in a multi-
module system is equal, or within a tolerance of approximately ±10%.
This is to ensure approximately equal current sharing when in the static
bypass mode and to restrain input/output high frequency loop current of
a parallel system.
Total length: 1A + 1B = 2A + 2B = 3A + 3B = 4A + 4B (see Figure
If you are installing only two UPS modules (redundant), this requirement
is no longer required, as each UPS is capable of supporting the full
bypass requirement. However, this would preclude future expansion.
Make sure that each UPS static bypass and the external bypass switch
(if installed) is fed from a single common source. If each UPS is fed with
a separate rectifier source, consult Eaton for advice on compatibility.
3.
To locate the appropriate terminals and review the wiring and termination
requirements, see Section
Figure 24. Pull chain terminal block connector assignments
Table 15: Pull chain connections
Pull
chain
terminal
+
-
©
Eaton Corporation plc 2019. All rights reserved.
7
for shutdown instructions.
4.3.3
Name
Pull chain +
Pull chain -
Revision: 002
27
.
CAUTION
15
22
, Table
, Figure
Description
Output: Backup control for parallel oper-
ation.
Document ID: P-164000848
User's and installation guide
27
)
24
, and Figure
.
65 (118)
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