GE LanPro 11 U, Руководство пользователя

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LX: OPM_LPA_11U_5K0_10K_1US_V021
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GE DE LanPro-11U UPS: Installation / User Manual 2.1 (US)
GE Digital Energy
g
4.4.6 LanPro
®
11U series: 2 / 3 / 4 parallel operating units – additional info
The RPA option (Redundant Parallel Architecture) allows you to create a redundant UPS system in which 2, 3 or 4
LanPro
®
-U units operate in parallel. The following should be considered when installing units in parallel.
This section gives aditional information on:
- installation (4.4.6.1)
- start-up (4.4.6.2)
- use / maintenance (4.4.6.3)
4.4.6.1 Notes concerning installation of a parallel system
1. All inputs of the UPSs must be supplied from the same phase. This is to enable bypass operation of the
parallel system. All inputs must be individually protected by fuses in the installation. The values of these fuses
should correspond to the values mentioned in section 4.4 table 1.
2. All outputs must be connected together, supplying the load. It is advised to install switches (S 1-4, fig. 17) in
the output wiring, in order to be able to isolate a unit from the remaining system for service and maintenance
purposes. It is advised to make a Neutral-to-Ground bounding in the output junction.
3. The diameter of input and output cables must be according to the table in the installation drawings (see
appendix). Cables with different diameters can cause tripping fuses in the UPS and/or the installation.
4. The length of all input cables from the input junction (Li, fig. 17) to the UPS inputs should be equal. The same
applies to the cables from the outputs to the output junction (Lo, fig. 17). The minimum length of the input as
well as the output cables is 3 meters / 10 feet.
Figure 17. Installation of parallel operating LanPro
®
-U UPSs
F1 F2 F3 F4
LanPro
IN
OUT
INPUT JUNCTION
OUTPUT JUNCTION
TO LOAD
1-PHASE 3-WIRE INPUT
Li Li
Li Li
Lo Lo
Lo Lo
YELLOW NETWORK
CABLES AS DELIVERED
WITH THE UPS
Li / Lo: LENGTH OF I / O WIRING
- EQUAL FOR EACH UPS
- MINIMUM 3 METERS / 9.8 FEET
S 1 - 4
SWITCH ALLOWS
ISOLATION OF
A UNIT FROM
THE SYSTEM
F 1 - 4
DISTRIBUTION
FUSE OR BREAKER
VALUES ACCORDING
TO TABLE 1
LanPro
IN
OUT
LanPro
IN
OUT
LanPro
IN
OUT
RPA
CARD
BUS
TERMINATOR
S1 S2 S3 S4
BUS
TERMINATOR
RPA
CARD RPA
CARD RPA
CARD
MAKE
NEUTRAL-TO-GROUND
BOUNDING HERE