Product Brief Description

The Multi-Amp 830280-47 is a portable transformer ohmmeter designed for measuring winding DC resistance of power transformers, motors, generators and other high-current inductive equipment. Packaged in a rugged hard-shell carry case with test leads and alligator clips, this instrument delivers stable and accurate low-resistance readings for power asset commissioning, routine maintenance and fault diagnosis. It is widely used as critical test equipment for power substations and power generation plants.

Product Features & Functions

• Precise DC resistance measurement for transformer and machine windings
• Built-in automatic discharge function to release residual inductive energy after testing
• Digital dual display screen to show test current and resistance values simultaneously
• Multiple selectable test current ranges to adapt different winding impedance
• Complete kit with shielded test cables and heavy-duty alligator clamps
• Portable rugged aluminum travel case for field site transportation and protection
• Overvoltage and overcurrent protection for operator and instrument safety

Application Scenarios

• Power transformer winding resistance test in substations and power plants
• Generator and large electric motor winding inspection during overhaul
• High-voltage equipment factory acceptance and on-site commissioning test
• Detect loose connections, broken strands and winding short-circuit faults
• Electrical power maintenance, preventive testing and spare test instrument replacement

Frequently Asked Questions