VarplusBox
LV steel box capacitors
Overview
Features
VarPlus Box are low voltage metal box capacitors specially designed to deliver reliable performance in standard, heavy-duty and most severe operating conditions, in fixed and automatic Power Factor correction systems, in networks with frequently switched loads and harmonic disturbances.
- Technical datas:
- High life expectancy up to 160,000 hours
- Voltage up to 830 V
- High power ratings up to 100 kvar
- Operating temperature up to 70 °C
- High inrush current withstand up to 400 x IN
- Stand-alone equipment
- Direct connection to a machine, in harsh environmental conditions
- Compliant with standards IEC 60831-1 and -2.
VarPlus Box capacitors must be selected depending on the working conditions expected during their lifetime. Since the harmonics are caused by non-linear loads, an indicator for the magnitude of harmonics is the ratio NLL of the total power of non-linear loads to the power supply transformer rating.
| Solution: description | Recommended use for | Max. condition |
| SDuty: Standard capacitor | Networks with non significant non-linear loads | NLL = 10 % |
| > Standard over-current | 1.5 IN | |
| > Standard operating temperature | 55 °C (class D) | |
| > Normal switching frequency | 5,000 / year | |
| > Standard life expectancy | up to 100,000 h | |
| HDuty: Heavy-duty capapcitor | > Networks with a few non-linear loads | NLL = 20 % |
| > Significant over-current | 1.8 IN | |
| > Standard operating temperature | 55 °C (class D) | |
| > Significant switching frequency | 7,000 / year | |
| > Long life expectancy | up to 130,000 h | |
| Energy: Capacitor for special conditions | > Networks with significant number of non-linear loads | NLL = 25 % |
| > Severe over-current | 2.5 IN | |
| > Extreme operating temperature | 70 °C | |
| > High switching frequency | 10,000 / year | |
| > Extra long life expectancy | up to 160,000 h |
Benefits
A safe, reliable and high-performance solution for power factor correction in the most severe application conditions
- Robustness
- Double metallic protection
- Mechanically well suited for “stand-alone” installations
- Direct connection to a machine, in harsh environmental conditions - Safety
- Unique safety feature with safe electrical disconnection of the capacitors at the end of their useful life
- Disconnectors installed on each phase for the maximum of safety - Easy to install and to maintain.
- Modularity with VarPlusBox Compact
- Special range with a unique footprint for total modularity
- Easy capacitor assembly by busbar
Applications
Fixed and Automatic Power Factor Correction systems
- In low voltage networks
- With frequently switched loads and harmonic disturbances