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Chapter 8 Parallel System
8.2.2 Electrical installation
1. Power cables
Wiring of power cables is the same with that of single module UPS system.
Note:
The length and specifications of power source cables including the bypass input and UPS output cables should be the same, thus the load can be shared evenly in bypass mode.
2. Signal cables
Wiring of signal cables is the same with that of single module UPS system. Parallel connection cables should be connected.
You can see the holes for parallel connection cables when opening the front door of the UPS system. According to the routes, two parallel connection cables are connected to the P1(P2) and P3(P4) sockets on the ULW2L61M3 parallel board, at the same time tighten the screws between the connector and sockets. P1/P2 on the ULW2L61M3 board are two
left post |
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| left post |
Logic cable |
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Load sharing detection | Logic cable | Load sharing detection | Logic cable | Load sharing detection |
UPS 1 parallel |
| UPS 2 parallel |
| UPS 3 parallel |
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Fig.8-6 Connection of Parallel Operation Cables
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