MASTERYS BC
from 15 to 20 kVA
16
IT
ALIANOENGLISH
3.6 CONNECTION OF THE GENERATOR.
If your system uses a generator, connect the “generator set ready” no-potential contact to connector
IN 2
on the
optional ADC card configured in standard or power safe mode (see paragraph 10.1). This automatically extends
the voltage and frequency value range when power is supplied by the generator set.
3.7 EXTERNAL E.S.D. CONNECTION.
A remote emergency shutdown system (E.S.D.) can be installed by means of the optional ADC card; see para-
graph 10.1. Connect a normally closed zero-potential contact to terminals
IN1+
and
IN1-
of the ADC card.
3.8 ISOLATION TRANSFORMER.
The MASTERYS
TM
IP model of the MASTERYS
TM
range is fitted with an internal isolation transformer.
If an external isolation transformer cabinet is required, the following instructions should be followed:
• Refer to chapters 2 and of this manual for indications on moving and installing the cabinet.
• See paragraph .4 for details about protections.
• The protection cable marked with the ground symbol is connected directly to the distribution panel.
• The transformer can either be connected to the UPS input or output.
The UPS must not operate without the neutral connection to the input.
The transformer cannot be connected to the output on single UPS unit connected in parallel
configuration.
For details of the connections, refer to the transformer terminal board diagram.
UNPACKING AND INSTALLATION
OF THE UNIT
3
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