162
Epsilon Eb and E Series EN Drives Reference Manual
Figure 99:
Single Phase Power Supply Connections
Transformer Sizing
If your application requires a transformer, use the following table for sizing the KVA rating.
The values in the table are based on “worst case” power usage and can be considered a
conservative recommendation. You can down-size the values only if the maximum power
usage is less than the transformer continuous power rating. Other factors that may influence
the required KVA rating are high transformer ambient temperatures (>40° C or >104° F) and
drive operation near the maximum speeds.
Transformer output voltage drop may become a limiting factor at motor speeds and loads near
maximum ratings. Typically, higher KVA transformers have lower voltage drop due to lower
impedance.
Drive/Motor Combination
Suggested KVA Rating
EN-204/MG-205
0.8
EN-204/MG-208
1.5
EN-204/MG-316
2.3
EN-208/MG-316
2.3
EN-208/MG-340
3.9
EN-208/MG-455
4.9
EN-214/MG-455
4.3
EN-214/MG-490
6.0
EN-214/MG-4120
6.5
Eb-202/NT-207
1.0
Eb-203/NT-207
1.0
Eb-202/NT-212
1.2
Eb-203/NT-212
1.7
Eb-203/MG-316
2.3
Eb-205/MG-340
3.0
Eb-205/NT-212
1.7
Eb-205/MG-316
2.3
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Содержание Control Techniques Epsilon Eb-202
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