Capacitor Banks: Product Families
A capacitor bank supplies reactive power close to the load, which reduces the reactive current the source and cables must carry and improves power factor. Fixed banks stay connected. Automatic banks switch steps in and out as the load changes. Where drives and other non-linear loads distort the waveform, banks are paired with reactors as detuned or tuned harmonic filters.
Medium-voltage banks are built in metal-enclosed cabinets or open racks, and low-voltage banks in floor-standing or wall-mounted cubicles. Buyers usually specify system voltage, kvar or MVAr, number of steps, frequency and any filter tuning. The families below are grouped by those types, with the ratings the manufacturers publish.
28 product families from 8 manufacturers
Medium Voltage Capacitor Bank
Northeast Power Systems (NEPSI)
Medium Voltage Metal-Enclosed Shunt Power Capacitor Banks
Factory-assembled metal-enclosed shunt capacitor banks for medium-voltage power factor correction, built as fixed or automatically switched, single or multi-stage.
- Rated range
- 2.4-38 kV line-to-line; 0.5-100 MVAR (500-100,000 kVAR); IEEE 18 / IEC 871 capacitors
GE Vernova
Medium Voltage Metal Enclosed Capacitor Banks
Fully assembled metal-enclosed automatic capacitor banks with integral protection and control, for indoor or outdoor substation placement.
- Rated range
- 2.4-38 kV; up to 40,000 kVAR per enclosure; up to 15 steps; short-circuit rating to 61 kA
Hitachi Energy (formerly ABB)
ABBACUS metal-enclosed capacitor banks (A to F series)
Listed as current
Packaged metal-enclosed capacitor banks with fixed or switched steps and optional inrush/detuning/filter reactors, for medium-voltage reactive compensation. Legacy ABB-branded family, now on Hitachi Energy's site.
- Rated range
- 1-38 kV; up to about 30 MVAr
ABB
EMPAC metal-enclosed capacitor bank
Metal-enclosed medium-voltage capacitor bank with double-star capacitor units, inrush reactors, earth switch and unbalance CT; a version with SF6 breaker and one without.
- Rated range
- 1-36 kV; built to IEC 60871
Southern States
Metal-Enclosed Capacitor Banks (and open-rack banks)
Customizable metal-enclosed medium-voltage capacitor banks, offered as standard, detuned or tuned harmonic-filter designs; open-rack banks also offered.
- Rated range
- Metal-enclosed 4.16-38 kV; open-rack 4.16-345 kV; any kvar rating
Hubbell Power Systems (Trinetics)
SmartBank Pad-Mounted Capacitor Banks
Outdoor pad-mounted fixed or switched medium-voltage capacitor banks for distribution and industrial use.
- Rated range
- 5-35 kV; 150-3600 kVAR
Hubbell Power Systems (Trinetics)
SmartBank Pole-Mounted Capacitor Banks
Pole-mounted fixed or switched medium-voltage capacitor banks with aluminum frame for utility distribution.
- Rated range
- 5-35 kV; 150-3600 kVAR
Hubbell Power Systems (Trinetics)
15/25/35 kV Medium Voltage Shunt Capacitors
Stainless-steel-case shunt capacitor units used to build pole or pad banks and harmonic filter banks.
- Rated range
- 15, 25, 35 kV classes; 50-400 kVAr standard sizes, 500 and 600 kVAr available
Schneider Electric (Square D)
ReactiVar Medium Voltage Fixed Power Factor Capacitors
Discontinued
Fixed-load medium-voltage power factor capacitor banks.
- Rated range
- Ratings not stated
- Also listed under
- Fixed Power Factor Correction
Schneider Electric
ReactiVar Medium Voltage Metal-Enclosed Automatic Power Factor Capacitor Banks
Metal-enclosed medium-voltage capacitor banks for variable-load reactive compensation.
- Rated range
- Ratings not stated
Schneider Electric
Propivar
Discontinued
Medium-voltage capacitors used to build power factor correction capacitor banks.
- Rated range
- Ratings not stated
Harmonic Filter Bank
Northeast Power Systems (NEPSI)
Metal-Enclosed Harmonic Filter Banks
Medium-voltage metal-enclosed filter banks (C-high-pass, high-pass, notch, double-tuned, multi-tuned) that also provide power factor correction.
- Rated range
- 2.4-38 kV; 0.5-100 MVAR; tune frequency 85-2,100 Hz; 50 or 60 Hz; short-circuit 16-61 kA
GE Vernova
Medium Voltage Metal Enclosed Harmonic Filter Banks
Metal-enclosed harmonic filter banks offered in the same guide as GE's capacitor banks, for industrial, commercial and utility power systems.
- Rated range
- Filter-specific ratings not stated; the guide's capacitor bank scope is 2.4-38 kV
Hitachi Energy (formerly ABB)
Passive harmonic filters (BP, HP, C types)
Listed as current
Open-rack passive filters (band-pass, high-pass, C-type) built from capacitors and reactors for medium/high-voltage networks.
- Rated range
- 1-550 kV; above 3 Mvar; 50 or 60 Hz
Hitachi Energy (formerly ABB)
Power Quality Filters PQFI / PQFM / PQFS
Listed as current
Active harmonic filters for low-voltage networks that also handle load unbalance and reactive power.
- Rated range
- PQFI 208-690 V, 180-450 A; PQFM 208-690 V, 70-150 A; PQFS 208-415 V, 30-120 A
Southern States
Tuned harmonic filter banks
Tuned harmonic filters offered within the Southern States metal-enclosed and open-rack capacitor bank lines.
- Rated range
- Metal-enclosed 4.16-38 kV; any kvar rating
Schneider Electric
VarSet Detuned Capacitor Banks / PowerLogic PFC (detuned)
Automatic capacitor banks with detuning reactors (4.2 class in the North American model page) for networks with harmonics.
- Rated range
- Example page: 650 kVAr at 480 V, 60 Hz; PFC family stated as 7.5-1150 kVAr
Schneider Electric
PowerLogic AccuSine PFV+
Electronic (active) VAR and harmonic control, listed in Schneider's power factor correction brochure.
- Rated range
- Ratings not stated
Automatic Power Factor Correction
Schneider Electric
PowerLogic PFC Smart Capacitor Banks (formerly VarSet)
Automatic low-voltage capacitor banks (standard and detuned) with smart controller; UL/CSA versions sold in North America.
- Rated range
- 7.5-1150 kVAr (family statement); 480 V examples
Schneider Electric
VarSet Standard / VarSet Detuned Capacitor Banks
Earlier-named automatic low-voltage banks for clean and harmonic-polluted networks.
- Rated range
- Example model page: 650 kVAr, 480 V
Schneider Electric
VarSet Fast Capacitor Banks
Low-voltage banks with fast, transient-free switching for quickly changing loads.
- Rated range
- Ratings not stated
Schneider Electric
VarSet Hybrid System
Combines conventional capacitor steps with IGBT electronics for continuously variable reactive compensation.
- Rated range
- Ratings not stated
ABB
APCQ series (APCQ-L, APCQ-M, APCQ-R)
Automatic low-voltage capacitor banks: wall-mounted (L), floor-standing (M), floor-standing with detuning reactors (R); IEC-market design.
- Rated range
- 400 V 50 Hz; up to 400 kvar per cubicle without reactor
Fixed Power Factor Correction
ABB
Individual and fixed low-voltage capacitor banks (CLM / CLMD types)
Dry-type low-voltage capacitors and fixed banks with fusing and blown-fuse indication, in NEMA 1, 3R and 12 enclosures; ABB North America catalog 1SXU000023C0202.
- Rated range
- 208/240/480/600 V, 60 Hz; kvar steps up to about 135 kvar
Northeast Power Systems (NEPSI)
Metal-Enclosed Power Capacitor Banks (fixed configuration)
Same NEPSI medium-voltage banks, ordered as fixed single-stage.
- Rated range
- 2.4-38 kV; 0.5-100 MVAR
Hubbell Power Systems (Trinetics)
SmartBank fixed pole- and pad-mounted banks
Fixed configurations of the pole-mounted banks for utility and industrial power factor correction.
- Rated range
- 5-35 kV; 150-3600 kVAR
Southern States
Open-rack and metal-enclosed fixed banks
Fixed capacitor banks with external, internal or fuseless fusing.
- Rated range
- 4.16-345 kV; any kvar
Power Factor Correction
ABB
QCap low-voltage capacitors
ABB's low-voltage power factor correction capacitor line, used in its APCQ banks.
- Rated range
- Ratings not stated
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Ratings and lifecycle notes come from the manufacturer pages linked on each entry.
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