Electrical Inductor Loading Bank
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Product Code : SCL-EAE-12049
Electrical Inductor Loading Bank (SKU SCL-EAE-12049) is a 415 V three-phase reactive load bank that provides an adjustable lagging load of up to 3 kVAR for electrical engineering laboratories. Engineering students and laboratory instructors use it to analyse transformer voltage regulation, alternator excitation and power-system stability. Science Lab Supplies produces the bank in its own manufacturing unit at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and supplies colleges, polytechnics, tender contractors and distributors without a middleman.
Specifications
The table below sets out every specification row by row. In short, the bank is a star-connected set of copper inductors on low-loss laminated silicon steel cores, switched in four balanced steps on each phase line up to 3 kVAR at 415 V, with surge varistors and an accessible neutral.
| Specification | Value |
|---|---|
| SKU | SCL-EAE-12049 |
| Product type | Three-phase reactive loading apparatus |
| Maximum reactive capacity | 3 kVAR continuous |
| Operating voltage | 415 V AC, 50/60 Hz, three phase |
| Connection | Internal star (wye) with accessible neutral point |
| Delta option | Delta-wired variant available on request |
| Load steps | 4 balanced discrete steps per phase line |
| Windings | Copper wire on low-loss laminated silicon steel cores |
| Insulation | Class H (180 °C) |
| Power factor | Lagging, close to zero (cos φ approx. 0.1) |
| Surge suppression | Metal-oxide varistors |
| Phase protection | Independent branch protection on each phase |
| Controls | Rotary selectors or independent toggle switches |
| Enclosure | Ventilated, powder-coated heavy-gauge sheet steel |
| Terminals | 4 mm shrouded safety sockets for L1, L2, L3 and neutral |
| Earthing | Chassis bonded to an internal safety earth line |
| Accessories | 6 high-current 4 mm patch cords, 3 removable copper bridging links |
| Manual | English, with power calculations |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Inductor Loading Bank
Students connect the bank to a 415 V three-phase source, switch in its steps and read phase voltage and current on bench meters to work out reactive power. It is intended for B.Tech, diploma and higher vocational electrical laboratories studying machines, transformers and power factor under lagging conditions.
- Alternator excitation: loading a machine set such as the Salient Pole Generator with lagging current and recording excitation changes.
- Power factor correction: using the bank as the inductive load while the Laboratory Capacitive Loading Unit 1.2 kVAR compensates it in parallel.
- Transformer testing: observing voltage regulation as reactive current is drawn from secondary windings.
Do not remove a lead while a step is ON, as a broken inductive circuit can arc; supervise all live work.
Standard Scope of Supply
Supply includes the bank enclosure with six high-current insulated patch cords fitted with 4 mm safety connectors, three removable phase bridging copper links and an English operations manual detailing power calculations. The three-phase source and measuring meters are not included and can be quoted separately.
Packing, MOQ and Lead Time
Quotations are available for one bank or for a matched set of reactive loads across several benches. Science Lab Supplies, a physics instruments supplier in India, gives the packing, delivery time and price for the quantity requested, and companion loads or meters can share the same quotation.
Science Lab Supplies is registered with an Importer-Exporter Code and is able to ship to buyers in Qatar, Sri Lanka, Vietnam, Malaysia, Peru and Egypt. Ask for prices via the contact page, gather items in the enquiry cart, or open the lab tender page for tender support.
Frequently Asked Questions
What power factor does the bank give?
It works as a nearly pure inductive load, with a strongly lagging power factor close to zero (cos φ about 0.1) on all switched steps, so reactive current dominates every reading.
Is the steel case earthed?
Yes. The heavy-gauge sheet steel enclosure has a low-resistance internal safety earth line bonded directly to the chassis, and each phase has independent branch protection against overcurrent.
How should the bank be looked after?
Clear dust from the ventilation grilles with dry compressed air or a soft cloth, check the terminal sockets for heating or loose joints, and store the bank in a dry, ventilated place.
Does Science Lab Supplies manufacture the loading bank or resell it?
Science Lab Supplies, a laboratory equipment manufacturer in India, manufactures it. The bank is wound and assembled at its own factory in Saha, Ambala, India, so prices and specifications are confirmed by the production team itself.
Related Reactive Loads and Power-System Apparatus
These loads and a transformer from the Electrical and Electronics and Electrical Power System ranges cover other reactive ratings and the companion apparatus for three-phase practicals, so a complete bench can be priced on one quotation together with this bank.
- Inductive Load 415V AC Three Phase — 3 kVAR star-connected inductive load for 415 V three-phase circuits.
- Electrical Inductor Load Bank 2.4 kVAR — star-connected 415 V bank whose single phase branch can be used on 220-240 V.
- Loading Inductor 240V AC Three Phase — 3 kVAR inductive load with Class H insulation, varistors and a delta variant on request.
- Power Factor Load Bank — free-standing mobile unit with a worktop and inputs for Lines 1, 2 and 3.
- Portable Resistive Load Bank — steel enclosure with ventilation holes and carrying handles, holding three resistive banks.
- Three Phase Mobile Transformer — three-limb transformer with all tappings on shrouded sockets, in a wheeled steel enclosure.
Browse the full Electrical and Electronics range, the Electrical Power System range, or all physics lab equipment.
Last updated: 9 October 2026
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