Chapter 8 Product of Specification
85
8.3 Isolation Transformer
Supply of power to the servo unit through an isolation transformer may minimize the potential
interference with the servo unit by power sources and electromagnetic field. The selection of an
isolation transformer depends on the rated capacity, load rate and loading constant rate of the drive
unit.
A 3
①
-phase isolation transformer shall be used for supplying of power when the power of the
servo is greater than or equal to 1kW.
For single axis, the capacity of the isolation transformer shall not be less than 80% of the power of
the servo motor. A user may select a transformer with capacity between 70% and 100% of the power
of the servo motor.
For two or more axes, the capacity of the isolation transformer shall not be less than 70% of
②
the total power of the servo motor. A user may select a transformer with capacity between 60% and
80% of the power of the servo motor.
Table 8-13 Specification of Isolation Transformer
Model No
Capacity (kVA)
Phases
Input voltage (V)
Output voltage (V)
BS--120 1.2
BS--200 2.0
BS--300 3.0
3 phases
BD--80 0.8
BD--120 1.2
Single
phase
380 220
The diagrams shows the dimensions in mm of the isolation transformer.
Summary of Contents for DA98E Series
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