Protection Devices; Short - Circuit Protection; Rotection Against Back - Feed; Nput Line Thermal Magnetic Switches - ALLTRONIC SEMIS T33 Manuel D'installation

P
ROTECTION DEVICES
S -
HORT CIRCUIT PROTECTION
2 2
P
ROTECTION AGAINST BACK
block diagram"
I

NPUT LINE THERMAL MAGNETIC SWITCHES

Mod. UPS
60kVA
80kVA
100kVA
125kVA
* In the case of non-linear loads, properly oversize neutral line N after on-site assessment
If the protection device upstream to the UPS interrupts the neutral conductor, all phase conductors must also be
interrupted at the same time (4-pole switch).
B

ATTERY LINE

Surge protector and a cut-off device must be provided on the UPS external battery line.
Mod. UPS
80kVA
100kVA
125kVA
Ensure that the UPS has been fully switched off before handling the external UPS battery line switch/fuses
2 2
-
FEED
Automatic external AC protections *
Network input
100A
125A
160A
250A
Fuse type
2 2
(optional for SEMIS 60-80-100 NP)
External DC protections
Fuse size [ A ]
- 79 -
2 2
Inverter contactor
Separate bypass input
100A
125A
160A
250A
"UPS