Three-Phase 3.5 kW Variable Load Rheostat

Product Code : SCL-EAE-11174

The Three-Phase 3.5 kW Variable Load Rheostat is an electrical laboratory apparatus used for controlled resistive loading, current regulation, voltage-drop study, and three-phase electrical machine testing. It is suitable for engineering colleges, polytechnics, ITI/TVET centres, electrical training laboratories, distributors, and institutional procurement buyers.

Product Description

The Three-Phase 3.5 kW Variable Load Rheostat from Lab Equipments Ambala is best positioned under Physics Lab / Electrical and Electronics / Resistance and Current Control Apparatus. A dedicated product page with final product code, phase configuration, resistance range, voltage rating, current rating, duty cycle, terminals, cooling method, and enclosure design should be confirmed before publishing.

A variable load rheostat provides adjustable resistive loading by dissipating electrical energy as heat through resistance elements. In three-phase laboratory use, a 3.5 kW variable load rheostat can help students and instructors apply balanced or sectioned resistive load to electrical machines, power sources, and training panels when used within the confirmed ratings.

Key Features

• 3.5 kW load rating: product name indicates 3.5 kW load capacity; final duty rating should be confirmed.
• Three-phase application: intended for three-phase load experiments; final wiring and phase configuration must be verified.
• Variable resistive loading: supports controlled current variation and load adjustment in laboratory circuits.
• Electrical machine training: useful for loading alternators, generators, motors, and power-source trainers when correctly rated.
• Measurement-compatible use: can be paired with voltmeters, ammeters, wattmeters, multimeters, and power analyzers.
• Rheostat category fit: aligns with Lab Equipments Ambala’s verified rheostat and resistance-control equipment range.
• Specifications pending: final phase type, voltage, current, resistance range, protection, and cooling method must be verified.

Technical Specifications

What's Included in the Kit

• Three-Phase 3.5 kW Variable Load Rheostat main unit
• Three-phase resistance elements or load sections
• Slider, selector, step switch, rotary control, or control panel
• Input/output phase terminals and earthing point
• Fuse, MCB, overload protection, enclosure, guard, or ventilation arrangement
• Instruction manual, wiring diagram, test report, or certificate

Applications / Uses

• Providing controlled three-phase resistive load in electrical engineering laboratories
• Loading alternators, generators, motors, and power-source training panels where the confirmed rating permits
• Studying voltage, current, power, resistance, and load-response behaviour
• Supporting regulation, efficiency, and performance experiments in electrical machine labs
• Demonstrating power dissipation and heat generation in resistive load circuits
• Training students in safe three-phase load connection, balancing, metering, switching, and shutdown procedure

How to Use the Three-Phase 3.5 kW Variable Load Rheostat

1. Place the rheostat on a dry, stable, ventilated laboratory bench or floor stand.
2. Confirm the voltage rating, current rating, phase configuration, resistance range, 3.5 kW rating, duty cycle, and earthing requirement before connection.
3. Connect the unit to the three-phase source, alternator, generator, trainer, or electrical machine according to the approved wiring diagram.
4. Connect suitable instruments such as voltmeters, ammeters, wattmeters, multimeter, or power analyzer.
5. Set all load controls to the minimum or safest starting position before energising the circuit.
6. Switch on the supply and increase the resistive load gradually using the approved controls.
7. Record line voltage, phase current, total power, load setting, temperature rise, speed, regulation, or efficiency observations as required.
8. Reduce the load, switch off the supply, isolate the circuit, and allow the rheostat to cool before disconnection or storage.

Safety note: Use the Three-Phase 3.5 kW Variable Load Rheostat only within its confirmed voltage, current, phase, wattage, and duty-cycle ratings. Three-phase high-power load experiments require trained supervision, secure earthing, insulated leads, protective switching, ventilation, balanced loading checks, and safe cooldown time.

Care & Maintenance

• Keep resistance elements, terminals, switches, vents, sliders, and enclosure surfaces clean and dry.
• Inspect insulation, earthing continuity, terminal tightness, overheating marks, and control movement before operation.
• Do not exceed the confirmed wattage, voltage, current, phase, resistance-step, or duty-cycle rating.
• Store the rheostat in a dry, dust-controlled area away from moisture, corrosive fumes, and mechanical impact.

Why Choose Lab Equipments Ambala

Lab Equipments Ambala manufactures and exports scientific laboratory instruments, lab experiment setups, science kits, mathematics kits, didactic models, and STEM models. The brand supplies electrical and electronics apparatus, physics laboratory equipment, rheostats, resistance boxes, lab meters, power supplies, and practical teaching resources for educational institutions. Its verified Rheostat Constantine/Eureka Wire listing describes laboratory-focused construction details such as phosphor-bronze contacts, double-contact slider movement, porcelain pipe winding support, and three brass terminals. Buyers should request final specifications before procurement to confirm product code, resistance range, voltage, current, phase configuration, duty cycle, cooling, protection, packing, and documentation.

Frequently Asked Questions

What is a Three-Phase 3.5 kW Variable Load Rheostat used for?

A Three-Phase 3.5 kW Variable Load Rheostat is used to apply controlled resistive load, vary current, study voltage-current-power behaviour, and support three-phase electrical machine experiments.

Is the 3.5 kW rating confirmed?

The product name states 3.5 kW. The final voltage rating, current rating, phase configuration, resistance range, duty cycle, and continuous or intermittent load rating should be confirmed before publishing.

Is this product suitable for three-phase machine labs?

Yes, if the confirmed voltage, current, phase, and load ratings match the machine-lab trainer or power source. Final wiring and protection details must be checked before use.

What instruments are normally used with this rheostat?

Common supporting instruments include line voltmeters, ammeters, wattmeters, multimeters, power analyzers, tachometers, and the electrical machine or source under test.

Can students operate a three-phase load rheostat independently?

No. Three-phase load rheostat experiments should be operated only under trained instructor or laboratory technician supervision because they involve high power, heat, switching, and electrical hazards.

What should be confirmed before ordering?

Confirm product code, voltage rating, current rating, resistance range or steps, phase connection, wattage, duty cycle, cooling method, terminal type, protection, dimensions, weight, and documentation.

For related electrical laboratory equipment, explore Electrical and Electronics equipment, Rheostat Constantine/Eureka Wire, Resistance Box Plug Type, and Lab Meters for confirmed specifications and institutional enquiries.