ENGLISH
IOMMASIPXX09-GB 04
51
10-40 kVA
MASTERYS IP+
11.4 ACS PCB.
To be installed on the slot “L”, it synchronises UPS output with an external power source (another UPS, even of a
di erent brand, generator or transformer).
11.5 ADC CARD WITH TEMPERATURE SENSOR.
This card can be used to manage up to four normally closed or normally open outputs and up to three digital inputs in
con gurable mode. If more than one ADC card is used simultaneously, the dip-switch con gurations must be di erent.
Secure the card with the appropriate screws.
11.6 EXTERNAL BACK-FEED PROTECTION.
External devices can be installed to protect against the backfeed of dangerous currents, both on the MAINS SUPPLY
and on the AUX MAINS SUPPLY.
These devices have to be connected to the terminals provided (see picture 11.6-1).
Refer to the following paragraphs for details on the electrical connections and on activating the chosen protec-
tion.
Attention.
In some failure conditions (earth leakage, signi cant phase dispersion or in case of non-isolated neutral system), high
potential can be detected in the neutral. It will therefore be necessary to install either adequate neutral switching
or protection system.
11.6-1
Backfeed connection
EXT. BATTERY
+B2 -B2 -B1 +B1
OUTPUT
MAINS
SUPPLY
IN
TRANSFORMER
OUT
TRANSFORMER
AUX MAINS
SUPPLY
L11 L21 L31 N1 L14 L24 L34 N4 N3L13 L23 L33 L12 L22 L32 N2L1 L2 L3 N
COM1
COM2
NC1
NC2
11
OPTIONS
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