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All UPS must be the same rated and connected to the same way bypass power supply.
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Bypass and the mains input power must be received with the same neutral.
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The output of all UPS machines must be connected to a common output bus.
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All bypass input cables and UPS output cables should be of the same length and
specification, which is to make the machine operate in the bypass mode and compare the
current sharing
.
3.11.2 Parallel cable installation
Shielded and double insulated control cables available must be interconnected in a ring
configuration between UPS modules as shown below. The parallel control board is mounted on
each UPS module. The ring configuration ensures high reliability of the control.
3.12 LBS installation (optional)
LBS system contains LCD set, cable connect and STS device.
3.12.1 LCD setting
Set every UPS of the systems to be LBS Master or LBS Slave. For instance if the UPS
belongs to LBS master system, its LBS setting must be set to Master.
