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

VarPlus Box

LV steel box capacitors

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