50 kVAr APFC Panel
Our 50 kVAr APFC panel automatically corrects power factor in medium-sized industrial facilities. Features microprocessor-based controller with real-time PF monitoring and automatic capacitor bank switching.
Ref. APFC-50-3PH · Lead time 3–4 weeks · Made to order from Hapur
See full engineering specification & variants
Key Features
Recommended For
Specifications
| Specification | Value |
|---|---|
| Rated Capacity | 50 kVAr |
| Input Voltage | 415V ±10% |
| Frequency | 50/60 Hz |
| Target Power Factor | > 0.95 |
| Capacitor Bank | Microfarad rating optimized |
| Response Time | < 5 seconds per step |
| Weight | 280 kg |
| Warranty | 2 years |
Reading the specification
What these numbers mean for your installation
A datasheet tells you what the unit does. This is what each figure changes about how you specify, feed and site it — worked out for the 50 kVAr specifically, not the range in general.
50 kVAr
50 kVAr of switched capacitance. As a working rule, a plant running at 0.85 power factor needs roughly 0.62 kVAr per kW of load to reach 0.99 — so this bank suits a connected load in the region of 81 kW. Send us a month of billing data and we will size it against your actual demand rather than a rule of thumb.
> 0.95
Most Indian DISCOMs levy a penalty below 0.90 and pay an incentive above 0.95. Holding > 0.95 is usually where the payback sits — pushing closer to unity costs disproportionately more capacitance for a smaller tariff gain, and risks leading power factor at light load.
< 5 seconds per step
Capacitors switch in discrete steps at < 5 seconds per step. That is appropriate for the slowly varying reactive demand of general plant. Rapidly cycling loads — welding sets, large press lines — need a thyristor-switched or hybrid bank instead, or the contactors will wear out prematurely.
Sizing Guide
When is 50 kVAr the right choice?
50 kVAr suits facilities where the utility bill shows a power factor between 0.75 and 0.85 and the sanctioned load is below 100 kVA. A typical scenario: a garment factory running 30–40 industrial sewing machines with motors, plus tube-light banks and a central AC — the inductive load from the motors drops PF to around 0.78, triggering monthly penalty charges. A 50 kVAr APFC panel brings that to 0.96+, eliminating the penalty and reducing the apparent kVA drawn from the feeder. The payback period is typically 8–14 months. If your electricity bill shows a 'low PF surcharge' line item every month and your connected motor load is under 75 kW, this is the correct panel size.
Before you order
Where 50 kVAr goes in, and what the site needs
Typical installations
We supply 50 kVAr most often into garment & textile units (motor-heavy sewing/weaving lines), facilities under 100 kva sanctioned load with a low-pf surcharge, small industrial & light engineering units and educational institution electrical rooms, alongside commercial buildings with central ac plant and hospitals (non-critical load side). What separates those sites is how the outgoing ways get allocated. Two boards of this rating can look identical on the schedule and behave completely differently depending on whether one feeder carries most of the load or the demand is spread evenly across them.
Site preparation
At 280 kg two people and a pallet truck will position this. The practical constraint is the doorway and any step or threshold on the route, not the weight itself. Leave working clearance on the terminal side for cable entry and inspection. Sustained ambient above 45 °C, or an enclosed room without cross-ventilation, requires derating — send us the room conditions and we will confirm the rating still holds where you intend to put it.
Adjacent ratings
If 50 kVAr is not the right size
Sizing rarely lands exactly on a catalogue rating first time. These are the ratings either side of it in the same range — compare the specification before you commit.
100 kVAr APFC Panel
Mid-range APFC panel for 100 kVAr reactive power compensation.
View specificationAPFC Panel200 kVAr APFC Panel
Industrial-grade APFC panel for large power factor correction (200 kVAr).
View specificationAlso in the panel range
Different equipment rather than a different size — often specified alongside this on the same project.
160A LT Distribution Panel (4-Way)
Compact low-tension distribution panel with 160A main capacity.
View specificationLT Panel400A LT Distribution Panel (6-Way)
Low-tension distribution panel with 400A main capacity and 6-way branch circuits.
View specificationLT Panel630A LT Distribution Panel (8-Way)
High-capacity 630A LT panel with 8-way distribution for large installations.
View specificationEngineering detail on this configuration
The apfc panel pages carry the full design rationale, comparison tables and application notes behind this SKU.
Ready to specify?
Share your load profile. Get a firm proposal in 24 hours.
Send us your kVA requirement, supply voltage range, and site conditions. Our engineer will confirm whether this configuration is correct for your installation, or specify an alternative if needed. No distributors — direct from our factory in Hapur.
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