Low-voltage capacitor banks Dynacomp
Thyristor-switched capacitor banks for power factor compensation of fast varying loads
The Hitachi Energy's Dynacomp low-voltage thyristor-switched capacitor banks are used for ultra-rapid transient free power factor compensation due to fast varying or large low-voltage connected loads, giving additional benefits of transient-free compensation and voltage dip minimization. With Hitachi Energy's Dynacomp technology large capacitor steps can be connected to the network very fast. By using a step-up transformer the Dynacomp can be used for capacitive compensation in medium-voltage installations too.
Applications
The Dynacomp low-voltage thyristor-switched capacitor banks can be used in any applications requiring short response times, large number of operations, transient free switching or large amount of reactive power. For example:
- Spot welding machines
- Rolling mills and big presses with fast switching loads
- Cranes
- Lifts
- Rubber mixer
- Saw mills and tunnel drills which have very high switching rates
Why Hitachi Energy?
Hitachi Energy has a vast experience in compensating fast reactive loads in the harshest environments. As a result, the Hitachi Energy's Dynacomp boosts high reliability and comes with:
- Ultra-rapid power factor compensation
- Usable in the harshest environments
- Equipped with detuning reactors for optimal protection against harmonics while still giving filtering effect
- Single and three phase models available
- Transient-free switching
- Very high number of switching operations possible thanks to power electronics switches
- Modular and compact standardized design
- Easy to install and extend
- Advanced communication features with Modbus
Brief performance data
| Dynacomp | |
|---|---|
| Rated voltage | From 380 to 690V - three or single-phase |
| Frequency | 50 or 60 Hz |
| Rated power | From 150 kvar to 12.8 Mvar |
| Step size | 50, 100, 200 and 400 kvar |
| Maximum power per cubicle | 400 kvar |
| Detuning reactor | 7% for three-phase system 14% for single-phase system |
| Communication | Using Modbus RTU |
| Response time | Closed loop: < 3 cycles Open loop: < 1 cycle External trigger: instantaneous |
| Working ambient temperature | -10°C to +40°C max. average |
| Installation | Free floor standing |
| Protection degree | IP21 (touch proof with open door) |
| Execution | Indoor installation in clean environment up to 1000 m altitude |
| Humidity | Maximum 95%, non condensing |
| Capacitors | CLMD type |
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