Loading Rheostat 12KW 220V AC Single Phase

Product Code : SCL-EAE-12043

The Loading Rheostat 12KW 220V AC Single Phase is a heavy-duty variable electrical load apparatus used for testing generators, transformers, and power distribution systems under high-power conditions. Designed for engineering students and laboratory technicians, this unit provides precise, adjustable power absorption to safely evaluate voltage regulation and source stability.

Product Description

The Loading Rheostat 12KW 220V AC Single Phase by Science Lab Supplies provides an exceptionally robust and reliable platform for performing high-capacity electrical loading tests. Featuring heavy-duty, industrial-grade wire-wound resistor elements, the apparatus safely handles continuous currents up to 55 A. The entire system is encased in a ventilated, powder-coated steel floor enclosure equipped with heavy-duty caster wheels to ensure smooth mobility across the workshop floor.

The control panel interface utilizes high-durability selector switches alongside explicit multi-step controls, enabling both coarse increment adjustments and fine variable tuning. To handle the massive thermal energy generated by 12 kW of continuous load dissipation, the chassis integrates powerful forced-air axial cooling fans and active over-temperature thermal cutout circuits. This self-contained benchtop or floor apparatus replaces dangerous open-wire testing arrays, making it a critical asset for modern engineering institutions updating their selection of industrial-grade scientific laboratory instruments.

Key Features

• High Power Dissipation Capacity: Safely manages up to 12 kW of continuous single-phase AC loading without physical degradation.
• Forced-Air Cooling Network: Equipped with multiple high-airflow axial fans to continuously remove thermal energy from the resistor coils.
• Heavy-Duty Mobility: Mounted on four rugged, integrated castor wheels with dual-locking brakes for secure stationary placement.
• Multi-Step Load Adjustment: Outfitted with durable toggle selectors that provide precise incremental control over current absorption.
• Active Thermal Protection: Integrates automated thermal overload circuit breakers that immediately trip if internal temperatures cross safety limits.
• Safe Terminal Interface: Uses fully shrouded, high-current binding posts or industrial safety terminals to ensure complete user insulation.

Technical Specifications

What's Included in the Kit

• 1 x Loading Rheostat 12KW 220V AC Single Phase master system enclosure
• 1 x High-current industrial input power cable assembly
• 2 x Heavy-duty insulated connection leads with copper terminal lugs
• 1 x Comprehensive English operations manual detailing installation and lab experiment setups

Applications / Uses

• Industrial Generator Diagnostics: Allows students to perform real-power loading assessments on single-phase backup generators.
• Power Transformer Analysis: Used to verify voltage regulation curves and efficiency indexes across high-capacity academic transformers.
• Electrical Grid Simulation: Provides a predictable electrical load to validate protective relay settings and circuit breaker responses.
• Curriculum-Aligned Engineering Training: Functions as an core testing block inside advanced engineering science kits.

How to Use the Loading Rheostat 12KW 220V AC Single Phase

1. Move the mobile rheostat enclosure onto a level, fire-resistant laboratory floor area, ensuring at least one meter of clearance around all ventilation grilles.
2. Verify that all front panel loading switches are flipped to their absolute OFF positions before connecting any high-power cabling.
3. Connect the 220V AC single-phase output terminals from your power source under test to the rheostat's input binding posts using the included heavy-duty insulated leads.
4. Turn on the main incoming breaker to energize the load bank's forced-air axial fans, confirming that continuous exhaust airflow is established.
5. Sequentially activate individual load step switches to increase the power draw incrementally, monitoring external panel meters to document system current changes.

Handling Note: Never deactivate the internal forced-air cooling fans while the resistor element array remains hot. Always turn off the load steps first and let the fans run for a full five minutes to cool down the internal chassis components.

Care & Maintenance

• Ventilation Inspections: Check the exhaust and intake grilles daily to clear out any obstructive debris, lint, or dust build-up.
• Terminal Torque Audits: Periodically verify that all high-current input binding posts and internal cable connections remain tightly bolted to prevent hot spots.
• Dry Cabinet Storage: Keep the apparatus inside a well-ventilated, dry storage bay free from corrosive moisture or chemical fumes to avoid coil oxidation.

Why Choose Science Lab Supplies

Science Lab Supplies is an internationally recognized manufacturer and global exporter of high-precision scientific laboratory instruments, vocational training systems, and robust didactic models. Operating under strict ISO 9001:2015 quality control structures, we ensure that our hardware provides exceptional durability, accurate calibrations, and comprehensive safety protections. We proudly support global vocational schools, polytechnics, and engineering universities with durable, customized inventory solutions and robust worldwide supply logistics.

Frequently Asked Questions

• Can this loading rheostat be safely utilized for continuous 24-hour operation?

Yes, the unit is constructed with high-temperature nickel-chromium alloy coils and a heavy-duty forced-air industrial cooling network engineered specifically for continuous operational testing cycles.

• What is the maximum current capacity of the 12kW single-phase load bank?

Under standard operating conditions at 220V AC, this loading rheostat draws a maximum current of approximately 54.5 Amperes.

• What happens if the forced-air cooling fans stop working during a lab test?

The load system incorporates an active thermal protection interlock that automatically cuts off power to the resistor bank if internal airflow drops or temperatures pass safe limits.

• Does the internal cooling system require a separate independent power link?

No, the industrial axial cooling fans run directly from the primary 220V AC input line, automatically turning on to safeguard the enclosure.

• Is the frame of this high-power load bank properly insulated to protect users?

Yes, the system features a heavy-gauge, powder-coated industrial steel frame connected to a dedicated safety grounding stud to eliminate static or leakage risks.

Explore our complete catalog of industrial test gear online, or contact our engineering department today to add this premium Loading Rheostat 12KW 220V AC Single Phase to your facility's collection of professional scientific laboratory instruments.