Преобразователи частоты SIMOVERT MASTERDRIVES
Vector Control; компактные и встраиваемые блоки
Параллельное подключение блоков
Large rating inverters – Output interphase transformer
The largest power ratings of the SIMOVERT MASTERDRIVES Vector Control series of converters are realised by connecting 2 inverters in parallel. In roder to ensure that loading is uniformly distributed between the two inverters, an interphase transformer is used on the coverter output.
This applies to the following converter/inverter ratings:
- 900 kW at 400 V (only chassis units),
- 1000 kW and 1100 kW at 500 V,
- 1300 kW and 1500 kW at 690 V.
Operation without interphase transformer
If the motor to be connected has 2 electrically isolated winding systems which have the same voltage and the same phase position, the output of both inverter sections can be connected directly to the two winding systems of the motor. The two magnetically cupled windings then have the same effect as an interphase transformer. An additional interphase transformer is then no longer necessary.
1LA1 type motors for 690 V can be supplied with 2 electrically isolated winding systems. They are to be ordered with the voltage code 1 (11th position of the Order No., e.g. 1LA1 503-4PM1).