Low Voltage Capacitors
Low-voltage capacitor banks APC
Contactor-switched capacitor banks for power factor compensation
The Hitachi Energy's capacitor banks series APC provides the ideal power factor correction solution for industrial and commercial networks. The benefits are:
Solving utility penalty charges due to low cos φ
Improving energy efficiency
Releasing additional capacity or increasing system load without additional equipment
Increasing service life time of infrastructure
The APC03 low-voltage contactor-switched capacitor bank can be used in industrial and commercial networks buildings. Industry segments where the product can be used include:
Pulp and paper
The APCQ-L low-voltage contactor-switched capacitor bank can be used in light industrial and commercial networks buildings.
Low Voltage Active Harmonic Filter
MaxSine Active Filter is made for the compensation of harmonic currents and reactive power. Electrical equipment connected to networks with non-linear voltage-current characteristics form harmonic currents that cause harmonic voltages in network impedances, this adds to the fundamental system voltage and results in voltage distortion. It is then transferred to all electrical equipment connected to the network, leading to higher thermal loading of motors, transformers, capacitors, switchgear and cabling. Some electrical equipment develop more audible noise when supplied with distorted voltage. Sensitive electronic protection, control and ripple control systems are likely not to properly operate when supplied with distorted voltage. MaxSine Active Filter is THE most effective way to eliminate harmonics. It is based on a patented Direct Phase Current Control (DPCC) technology. It will provide your network with an efficient harmonic reduction and reactive power compensation.
Low-Voltage Switched 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.
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.
Spot welding machines
Rolling mills and big presses with fast switching loads
Saw mills and tunnel drills which have very high switching rates
Power Factor Correction Units
The DSHI and DSHM Low Voltage Capacitors Units are manufactured with the latest technology and have multiple protection devices. With their robust construction, they are environmentally safe, durable and have low losses. The capacitor elements, made of metallized polypropylene film are self-healing and dry without liquid impregnations. Each capacitor element has an individually patented internal protection and special heat transfer package. The capacitors are supplied with external discharge resistors, heat transfer package and terminal boxes. These assemblies are available in 1, 2, 3, 4 and 6 units.
Motor DriveSaver Series I & II
DriveSaver DS1000/Detuned and DS2000/Tuned Filters are used to compensate the reactive power in individual, standard-power devices or groups of motors devices affected by harmonics on medium voltage systems. A Drive Saver fixed or automatic consists of a reactor connected in series with the power capacitor unit and switched contactor for the DS1000 series II. With this construction, a resonance phenomenon between network inductance and capacitor capacitance is avoided. A fixed detuned filter is usually connected in parallel with the device, motor or the group of devices needing to be compensated. This way, the capacitor is switched on and off simultaneously with the load. If it requires to be controlled separately, a contactor (series II) can be separately installed in the case.
Motor DriveSaver Series I & II
DriveSaver DS100 Series Detuned and DS200 Tuned Filters are used to compensate the reactive power in single, standard power devices or groups of motors in networks affected by harmonics. A DriveSaver fixed or automatic consists of a reactor connected in series with the power capacitor unit and switched contactor for the DS100 series II. Using this type of assembly prevents a resonance phenomenon between network inductance and capacitor capacitance. A fixed detuned filter is usually connected in parallel with the device, motor or group of devices that needs to be compensated. The capacitor is switched on and off simultaneously with the motor being corrected. For an individual control of the detuned filter, a contactor (series II) can be separately installed inside the case.
Automatic Power Factor Correction
The C100 Automatic Cubicle-Type Capacitor Bank is used for central power factor correction at main and group distribution boards. It corrects the reactive power charges levied by electricity suppliers. The C100 Automatic capacitor banks consist of controlled stages driven by a power factor controller which ensures that the required capacitor power is always connected to the system. Wall or floor mounted, all components (controller, capacitor units, contactors and fuses) are built into compact steel enclosures.
Fast and Zero Crossing Switching
The FT300 Thyristor Switched Capacitor Bank equipped with a fast control is designed to support the line voltage and compensate the reactive power of the load. The thyristor switches fast response is achieved without any mechanical wear, noise or excessive transient associated with contactor switching. A control signal can be brought from the compensated equipment to achieve reactive power compensation with almost no delays. All steps of the capacitor bank are switched on during one network period. Each step of the bank consists of a capacitor unit with a blocking reactor that tuned to a frequency below the lowest harmonic.