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Safety information
Introduction
Figure 4-12 Layout for two Unidrive M / Unidrive HS size 9D/10D with twin size 11 rectifier operating on a 12 pulse phase shifted AC supply
L3
L2
L1
L3
L2
L1
* INL chokes may be omitted if:
1. The transformer is dedicated to the drive i.e. not shared with other equipment.
2. The transformer has reactances from primary to secondary and between secondaries of at least 4% based on the drive rating. This represents a
fully-wound transformer with loosely-coupled secondaries whose rating (kVA) does not much exceed the drive rating.
36
System
Product information
configuration
Fuses
Fuses
2 x INLXXX
Line reactor*
11
9D
9D
10D
10D
U V W
OTLXXX
sharing
chokes
Mechanical
Electrical
Installation
Installation
+DC
-DC
9D 10D
9D
10D
U V W
Parallelling cable
OTLXXX
sharing
chokes
Unidrive M / Unidrive HS Modular Installation Guide
Technical data
UL Information
Issue Number: 5
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