Network Configurations; Three Phase Without Neutral Network - socomec ATyS t M Instruction Manual

11.2. network conigurations
Coniguration of the network is done through the ATyS t M autoconiguration feature. Refer to section «13.4.
Programming», page 28.

11.2.1. Three phase without neutral network

For three-phase networks without neutral (3NBL) 400Vac, a neutral must be recreated to allow the ATyS M to operate
at 230Vac. To recreate the neutral, we recommend the use of quantity 2x 400VA auto-transformers connected as
shown below. The neutral position must be deined as neutral on the left or neutral on the right in advance and then
wired accordingly. The example below shows the wiring for a product conigured with neutral on the left
a new product must have the neutral coniguration pre-programmed as on the left or on the right at
the irst start up using a real (not a recreated) 3 phase + neutral supply.
11.2.1.1. Auto-transformer connections
Reference 1599 4121
2 a aM
rM1
-t1
0
230
400
400 / 230 v
400 va
22
EN
load
l1
2 4 6 8
i
1 3 5 7
n
rM32 2p
1 a aM
l11 l21 l31
source I
l2 l3
2 4 6 8
1 3 5 7
n
l12 l22 l32
source II
ATyS t M
Inputs
ii
SI/SII
availability
207 208 209 210 63 64
rM32 2p
2 a aM
rM2
1 a aM
-t2
400
230
0
400 / 230 v
400 va
ATyS t M - 542 931 C - SOCOMEC
not used
73 74