Class 8839 58M Enclosed AC Drives
Three Phase Drive Isolation Transformers
Drive Isolation transformers are designed for maximum benefit when applied to an AC drive.
In addition to the functional comparison of a line reactor, drive isolation transformers are normally used for one of the following reasons over a standard line reactor:
1.Match system voltage to drive rating.
2.Meet local or plant codes that require isolation.
3.Capable of correcting line voltage unbalance conditions commonly seen with open delta and corner grounded delta distribution systems.
4.Provides continuity of service for nuisance grounding.
5.Reduces drive induced currents in supply feeder ground and limit ground fault currents.
6.Isolate the electrical common mode noise generated in solid state controllers from the distribution system.
The Class 8839 58M Enclosed AC drives have a high fault withstand capability (up to 65,000 A or 100,000 A depending upon configuration). For these reasons, Square D does not require the use of a drive isolation transformer for isolation purposes unless the system requires one or more of the six functions listed above.
Three Phase 60 Hz Class B (IEEE 597-1983)
HP Rating | kVA | Catalog Number |
|
|
|
7.5 | 7T( )HDIT | |
|
|
|
7.5 | 11 | 11T( )HDIT |
|
|
|
10 | 15 | 15T( )HDIT |
|
|
|
15 | 20 | 20T( )HDIT |
|
|
|
20 | 27 | 27T( )HDIT |
|
|
|
25 | 34 | 34T( )HDIT |
|
|
|
30 | 40 | 40T( )HDIT |
|
|
|
40 | 51 | 51T( )HDIT |
|
|
|
50 | 63 | 63T( )HDIT |
|
|
|
60 | 75 | 75T( )HDIT |
|
|
|
75 | 93 | 93T( )HDIT |
|
|
|
100 | 118 | 118T( )HDIT |
|
|
|
125 | 145 | 145T( )HDIT |
|
|
|
150 | 175 | 175T( )HDIT |
|
|
|
200 | 220 | 220T( )HDIT |
|
|
|
250 | 275 | 275T( )HDIT |
|
|
|
300 | 330 | 330T( )HDIT |
|
|
|
400 | 440 | 440T( )HDIT |
|
|
|
450 | 550 | 550T( )HDIT |
|
|
|
500 | 550 | 550T( )HDIT |
|
|
|
Voltage Codes |
|
|
Code | Primary | Secondary |
|
|
|
142 | 230 Delta | 230Y/132 |
|
|
|
143 | 230 Delta | 460Y/265 |
|
|
|
144 | 460 Delta | 230Y/132 |
|
|
|
145 | 460 Delta | 460Y/265 |
|
|
|
146 | 575 Delta | 230Y/132 |
|
|
|
147 | 575 Delta | 460Y/265 |
|
|
|
Notes:
To complete catalog number: Select the voltage required from chart. Insert the voltage code number in place of the ( ) in the catalog number
162
©
09/2003