Nidec AD1A008FBBNH, User And Maintenance Manual

Page: 53 / 138

Summary
Preface
P. 6
Chapter 2
P. 17
Technical data
Chapter 5
P. 76
Reception, storage
and installation
Chapter 4
P. 54
General information
Chapter 3
P. 47
Application notes
Chapter 6
P. 115
Options
Chapter 7
P. 129
Preventive maintenance
Chapter 1
P. 15
Overview
and installation diagram
Answer Drives 1000
53
3
3.6 MOTOR SELECTION
Abbreviation Definition
U N rated voltage of the power supply network
Û LL peak to peak voltage at the motor terminals
to which the motor insulation must withstand
P N motor rated power
dv/dt filter dv/dt at the drive output
CMF common mode filter (3 ferrite toroidals)
LCMF light common mode filter (1 ferrite toroidal)
N insulated bearing, non-drive end
N.A. Motors of this power range are not available as
standard units. Consult the motor manufacturer
NOTE 2 - EXPLOSION-PROOF MOTORS (EX).
Consult the motor manufacturer for motor insulation problems
and additional requirements for explosion-proof motors (EX).
NOTE 3 - LARGE MOTORS AND IP 23 MOTORS
For motors with rated power greater than that prescribed for a particular shaft
height by EN 50347 (2001) and for motors with protection degree IP 23:
• apply to motors of the 40 kW < PN < 100 kW range the same criteria
of the “100 kW < PN < 350 kW” range.
• apply to motors of the “100 kW < PN <350 kW” range the same criteria
of the “PN <350 kW” range.
NOTE 4 - OPERATION IN BRAKING
When the drive is in braking, for most part of this operation, the DC
intermediate circuit voltage increases; the resulting effect is equivalent to a
20% increase of the network voltage. This increase must be considered in
establishing the isolation requests.
Example: For a 400V motor it is necessary to adopt the insulation criteria
for 480V power supply.