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ENGLISHENGLISH
ITYS PRO
10-15-20 kVA - Ref.: IOMITYPRXX00-EN 03
3. ELECTRICAL INSTALLATION
NOTE!
Before carrying out any operations on the unit read the Safety standards chapter carefully.
3.1. ELECTRICAL
REQUIREMENTS
The installation and system must comply with national plant regulations.
The electrical distribution panel must have a sectioning and protection system installed for input and auxiliary mains.
Ensure a type-B RCD (residual current detector) is installed on the mains power switch and that this is inserted upstream of the distribution panel.
Size of input protection devices
Model rating
Magneto-thermal
input
(1)
Magneto-thermal
Aux. Mains
(1)
Differential input
(2)
Battery protection
(3)
(kVA)
(A)
(A)
(A)
(A)
Single unit
Single unit
Selective type
Fuse
10 3/1
25
80
0.5
50 Gr
15 3/1
32
100
0.5
100 Gr
20 3/1
40
125
0.5
100 Gr
10 3/3
25
25
0.5
50 Gr
15 3/3
32
32
0.5
100 Gr
20 3/3
40
40
0.5
100 Gr
Cable core size
Model rating
Type of cable
core size
Input cable
core size
Auxiliary/Output
cable core size
Battery cable
core size
(kVA)
mm
2
(AWG)
mm
2
(AWG)
mm
2
(AWG)
flexible cable
flexible cable
flexible cable
10 3/1
min
6 (AWG10)
16 (AWG5)
6 (AWG10)
max
(4)
25 (AWG3)
25 (AWG3)
25 (AWG3)
15 3/1
min
6 (AWG10)
25 (AWG3)
6 (AWG10)
max
(4)
25 (AWG3)
25 (AWG3)
25 (AWG3)
20 3/1
min
10 (AWG7)
25 (AWG2)
10 (AWG7)
max
(4)
25 (AWG3)
25 (AWG3)
25 (AWG3)
10 3/3
min
6 (AWG10)
6 (AWG10)
6 (AWG10)
max
(4)
25 (AWG3)
25 (AWG3)
25 (AWG3)
15 3/3
min
6 (AWG10)
6 (AWG10)
6 (AWG10)
max
(4)
25 (AWG3)
25 (AWG3)
25 (AWG3)
20 3/3
min
10 (AWG7)
10 (AWG7)
10 (AWG7)
max
(4)
25 (AWG3)
25 (AWG3)
25 (AWG3)
(1) Recommended magneto-thermal switch: with intervention threshold≥10In (Curve C), it is necessary to use a D curve selective
breaker in case of UPS with transformer. For backfeed protection use a magneto thermal switch with 220 V - 240 V release coil.
(2) Use a single type-B selective (S) breaker installed upstream of the inputs power supply.
(3) Protection on the external battery cabinet. Recommended magneto thermal switch: two poles with intervention threshold = 3 In
suited for DC applications.
(4) Determined by the size of the terminals.