Specification
T1689 Technical Manual Rev 07
Reactors, Inductors & Transformers
MV3000 Air Cooled DELTA
Page 62
2.13
REACTORS, INDUCTORS & TRANSFORMERS
2.13.1
General Description
A variety of reactors, inductors and transformers are available for use in conjunction with DELTA drives.
Further information is given in Section £ - Drive CDM Design. With the exception of the DELTA transistor
module sharing reactors, these components are application specific.
2.13.2
Input Reactor For DFE Drives
The input reactor provides impedance between the a.c. supply and the rectifier module(s). This helps to
reduce the input current ripple, peak currents, harmonics, aids transient voltage protection and fuse
protection.
NOTE: If the system is supplied by an individual transformer of approximately the same rating as the drive then
input line reactors are not required.
Figure 2–23. – DFE Input Line Reactor
2.13.2.1
Features
•
The reactor fits directly into the DELTA mounting framework and may be mounted alongside or
underneath rectifier module(s).
•
Forced ventilation is through the DELTA cooling system. The same fan and air inlet / outlet
positions (relative to the module) are used for both the reactor and the DELTA modules.
•
The reactor modules may be configured for ‘dirty air’.
•
Semiconductor fuses may be mounted on the front of the module
NOTE:
The use of semiconductor fuses are strongly recommended in order to protect the input rectifier
bridge module(s)
2.13.2.2
Variations
•
Two current ratings are available, 630 and 754A.
•
Supplied as an enclosed product, to be used for force cooling
Reactor Part
Number
Nominal Supply
Voltage (V a.c.)
Current
Rating
(A r.m.s)
Phase
Inductance
(µH)
R
reactor
(mΩ)
Weight
kg
lb
30V6500/10
0 – 690
630
20
0.52
86
189
30V6700/10
0 - 690
740
31
2.66
82
180
Table 2–31. – 3-Phase Input Line Reactors
