Hoyt Electrical Instrument 4104IN

The Hoyt 4104IN Digital High Voltage Insulation Tester is engineered for professionals requiring precise insulation resistance measurements in high-voltage systems. It provides four selectable test voltages—1kV, 2.5kV, 5kV, and 10kV—enabling comprehensive testing across a wide range of equipment, including cables, transformers, motors, and switchgear.

This tester features auto-ranging capability, allowing it to measure insulation resistance up to 500 GΩ with an accuracy of ±5% of the reading. The large 2-line x 16-character LCD display presents clear readings, while the bar graph indicates test voltage rise and decay, facilitating real-time monitoring of insulation performance.

Safety is paramount in high-voltage testing, and the 4104IN is equipped with visual and audible warnings to alert users of the presence of external voltage. The EnerSave™ feature extends battery life, and the unit includes overload protection and an auto-off function to conserve power and enhance durability.

Designed for ease of use, the tester is housed in a rugged, gasket-sealed enclosure, ensuring reliability in challenging environments. Its compact size and lightweight design make it suitable for both field and laboratory applications.

Key Features:

• Selectable Test Voltages: 1kV, 2.5kV, 5kV, 10kV

• Measurement Range: Auto-ranging up to 500 GΩ

• Accuracy: ±5% of reading

• Display: 2-line x 16-character LCD with bar graph

• Safety Features: Visual and audible external voltage warnings

• Power Management: EnerSave™ feature, low battery indicator, auto-off

• Protection: Overload protection, sealed enclosure

• Compliance: Meets N61010-1 CAT III 600V and EN 61326-1 standards

Compatible Applications:

• High-voltage cable testing

• Transformer insulation assessment

• Switchgear and circuit breaker evaluation

• Motor and generator insulation resistance testing

• Preventive maintenance in electrical systems

Included Accessories:

• High-voltage test leads

• Shoulder strap

• Instruction manual

Compliance:

• N61010-1 CAT III 600V

• EN 61326-1

Benefits for Lab/Field Users:

The Hoyt 4104IN provides electrical engineers and maintenance professionals with a reliable tool for assessing insulation integrity in high-voltage equipment. Its comprehensive testing capabilities, user-friendly interface, and robust design ensure accurate measurements and enhanced safety during field and laboratory inspections.