Capacitor Banks
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BSMJ 440V Low Voltage Shunt Power Capacitor 15 / 25 / 50 kvar | 3-Phase Self-Healing PFC
- Rs.6,700
Rs.14,500- Rs.6,700
- Unit price
- per
Spec correction (June 2026) Earlier product listings showed this BSMJ as "220V" — that was a transcription error. The BSMJ0.44 model code corresponds to a 440V line-to-line 3-phase shunt capacitor. The unit IS suitable for the Pakistani LT industrial 400V system. Pakistani buyers should...- Rs.6,700
Rs.14,500- Rs.6,700
- Unit price
- per
What is a capacitor bank (APFC)?
A capacitor bank (Automatic Power Factor Correction, APFC) is a multi-step assembly of BSMJ shunt capacitors switched in / out by an intelligent controller (JKW5C) to maintain a target power factor (typically 0.95+). Pakistani factories above 50 kW load install APFC banks to eliminate NEPRA maximum-demand (MD) penalties — payback typically 2–3 months. Built to IEC 60831-1 (capacitors) + IEC 61921 (capacitor-bank assemblies).
| Bank size | Steps | Suitable load |
|---|---|---|
| 40 kvar (1×25 + 1×15) | 2-step | 50 kW factory |
| 90 kvar (1×50 + 1×25 + 1×15) | 3-step | 100 kW factory |
| 200 kvar (3×50 + 2×25) | 5-step automatic | 200 kW commercial tower |
For component-level sizing math + NEPRA penalty calculations see the PFC capacitor buyer guide.
Updated: June 10, 2026 · CNC Electric Pakistan
Capacitor Bank — Pakistan Quick Answer (May 2026)
A capacitor bank in Pakistan corrects poor power factor in industrial and commercial installations — reducing reactive power demand, lowering WAPDA bill penalties, and freeing up transformer capacity. Without PF correction, a factory drawing 100 kW at 0.7 PF appears as 143 kVA on the meter (PEPCO charges for kVA). After installing a capacitor bank to bring PF to 0.95, the same load appears as 105 kVA — saving 26% on demand charges. CNC 2026 prices range from Rs. 12,500 (5 kVAR fixed bank) to Rs. 185,000 (100 kVAR automatic bank with controller).
| Factory Load | Recommended Capacitor Bank | Type | 2026 PKR |
|---|---|---|---|
| Small shop, 10-15 kW load | 5 kVAR fixed bank | Manual fixed | 12,500 |
| Medium workshop, 20-30 kW | 10 kVAR fixed | Manual fixed | 22,000 |
| Small factory, 40-60 kW | 20 kVAR auto bank (3-step) | Automatic with PFC controller | 48,000 |
| Medium factory, 80-120 kW | 40 kVAR auto bank (5-step) | Automatic with PFC controller | 85,000 |
| Large factory, 200-300 kW | 100 kVAR auto (8-step) | Automatic with detuning reactors | 185,000 |
Sizing rule: kVAR needed = kW load × (tan φ1 − tan φ2). For PF 0.7 → 0.95: kVAR ≈ 0.69 × kW. So a 50 kW factory needs ~35 kVAR. Always size 10-20% above calculated value to allow for load growth.
Payback: Typical Pakistani factory recovers capacitor bank investment in 6-12 months from reduced kVA demand charges on the WAPDA bill. Required components: Power Capacitor · Contactor · PFC controller · detuning reactor (for VFD-rich loads).
CNC low-voltage shunt power capacitors for reactive power compensation and power factor correction in industrial and commercial electrical systems across Pakistan. Our capacitor banks reduce electricity bills by improving power factor, minimising penalties from electricity providers, and extending the lifespan of your equipment.
Available in single-phase and three-phase configurations for panel mounting, these capacitors are designed for DIN rail or direct-mount installation in MDB and DB panels. IEC-certified, built for Pakistan's demanding grid conditions, and backed by a manufacturer warranty. Ideal for factories, textile mills, commercial buildings, and any facility with heavy inductive loads.
Power Factor Capacitor Banks — Frequently Asked Questions
What is the price of a capacitor bank in Pakistan?
CNC capacitor banks: 5 kVAR Rs.12,500; 10 kVAR Rs.22,000; 25 kVAR Rs.48,000; 50 kVAR Rs.85,000; 100 kVAR Rs.155,000. Automatic PF controllers (APFC) with staged caps Rs.95,000+.
How much do capacitor banks save on Pakistani electricity bills?
For a factory at 0.78 PF with a Rs.500,000/month bill, a 50 kVAR bank typically eliminates the Rs.40,000/month PF surcharge (480k/year). Payback 2-3 months.
Fixed bank or APFC?
Fixed for constant industrial loads (always-on motors). APFC (Automatic Power Factor Controller) for variable loads that switch on/off through the day — ensures PF stays at 0.95 regardless of load.
Do I need detuned reactors with VFDs?
Yes. VFDs generate harmonics that resonate with raw capacitor banks, causing rapid overheating and failure. Detuned banks include series reactors blocking the resonance — adds 30% to cost but multiplies capacitor life 3-5×.
