socomec Masterys MAS2BC115M+D1, Инструкция по установке и эксплуатации

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MASTERYS BC
from 15 to 20 kVA
17
ENGLISH
3.9 UPS PARALLEL CONFIGURATION.
3.9.1 General.
Parallel connection enhances UPS reliability, performance and power.
All MASTERYS™ models can be installed in parallel configuration provided they have the special parallel kit that
can be installed in factory or later by specialist personnel.
The UPS units connected in parallel configuration are identical to a standard UPS, as a result safety, shipping
and installation recommendations in chapters 2 and also apply.
3.9.2 Installation.
UPS units operating in parallel (max. 2) are interconnected using control cables
B
(fig. .9.4-1). A maximum
distance of approx. metres between the UPS modules is possible using these cables.
3.9.3 Power cable connections.
• The power supply to each unit must be protected as indicated in the table in paragraph .4.
• The cross section and length of the input and output cables must be identical for the two units.
• The phase rotation must be the same for each unit connected in parallel and also on any external manual
bypass line.
• Cables of the same length must be used for the distribution connection between the general power switch
A
, the switches
C
and the respective UPS units. The length of the cables from
A
to each UPS must not exceed
25 meters (Fig. .9.4-1).
• The cables from the UPS to circuit breaker
F
must be of the same length (max. 15 metres).
• If a differential switch is installed on the mains power switch (optional), it must be inserted upstream from the
distribution panel (see fig. .9.4-1, detail
A
), it must be a selective type and the trigger value
must be 0.5 A
by the number of UPS connected in parallel
.
• The automatic switch
A
must have a D intervention curve and a current value double that shown in the Mag-
neto-thermal on Auxiliary Mains column in table .4.
3.9.4 Control connections.
In order for units connected in a parallel configuration to operate correctly, control cables are required to ex-
change data between the various UPS units making up the parallel system for management of correct load
sharing and synchronisation logic.
The cables in question are supplied with the UPS in case of standard parallel setting or are attached to the paral-
lel kit in case of later upgrading of the system.
Parallel configuration must only be activated by SOCOMEC UPS qualified personnel.
UNPACKING AND INSTALLATION
OF THE UNIT
3