Recommended Power Supplies For 3Ph Connection - Siemens MICROMASTER 440 Quick Start Manual

Issue 08/03
2.4

Recommended Power Supplies for 3ph Connection

Wye Connection – Neutral referred to ground
Wye Connection – High resistance to ground
Delta Connection – One phase with high
resistance to ground
NOTE
For ALL other line configurations an isolation transformer should be used with a grounded Wye
secondary.
22
L1
L2
3ph Drive
L3
PE
Delta Connection – One phase grounded
L1
L2
3ph Drive
L3
PE
Remove Y Capacitor
L1
L2
3ph Drive
L3
PE
Remove Y Capacitor
Figure 2-7 - Recommended Power Supplies
Quick Start Guide
Wye Connection – With Station Ground
Station Ground
Station Ground
Delta Connection – One phase grounded
L1
L2
3ph Drive
L3
PE
Remove Y Capacitor
L1
L2
3ph Drive
L3
PE
Remove Y Capacitor
L1
L2
3ph Drive
L3
PE
Remove Y Capacitor
MICROMASTER 440
6SE6400-5GA00-0BP0