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Motor Testing

AT7™ Pro

AT7™ Pro

  • ATP Part Number: 30027
  • Test Type: Deenergized Motor Circuit Analysis™ (MCA™)
  • Applicable Equipment: AC induction, AC synchronous, DC motors, traction motors, transformers, and coils
  • Patented Technologies: Dynamic Stator and Rotor Signatures™ for squirrel-cage AC induction motors
  • TVS™ (Test Value Static™): Patented fault-detection reference for stator, rotor, and power lead issues
  • Diagnostic Coverage: Resistance, rotor/stator condition, contamination, and insulation status
  • Voltage Range: <1000V (low-voltage testing for safety and precision)
  • Analysis Time: Delivers diagnostics in minutes
  • Use Cases: In-plant or field use for predictive maintenance, quality control, and commissioning
  • Test Speed: Complete test typically takes less than 3 minutes
  • Display Interface: Easy-to-follow menu with guided test procedures
  • Portability: Lightweight and handheld for in-field inspections
  • Reporting: On-device assessment with results usable for trend tracking and early fault detection
  • Power: Internal battery-powered instrument
  • Durability: Designed for industrial field conditions

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SKU: AT7™ Pro
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Product Information

AT7™ Pro

The ALL-TEST PRO 7™ PROFESSIONAL (AT7™ Pro) is the industry-leading instrument for deenergized motor circuit testing, providing a fast, accurate, and comprehensive evaluation of motors before they fail. This handheld device is ideal for predictive maintenance, enabling technicians to detect faults in stators, rotors, contamination levels, insulation integrity, and power leads—all without applying power to the motor.

Built around ALL-TEST Pro’s patented Dynamic Stator and Rotor Signatures™, the AT7™ Pro offers unprecedented insight into the electrical condition of AC induction squirrel-cage motors, identifying rotor and stator issues in real-time. The instrument also uses TVS™ (Test Value Static™)—a unique electrical “fingerprint” used as a baseline to detect degradation over time or after reinstallation.

In just a few minutes, technicians can perform full diagnostics on AC/DC motors, synchronous machines, transformers, coils, and more. Whether used on the shop floor or in the field, the AT7™ Pro allows organizations to catch developing faults early, avoid costly downtime, and verify motor health after installation or repair.

Complete Deenergized Testing in Minutes

The AT7™ Pro empowers technicians to evaluate insulation, stator, rotor, and connection health in under three minutes—without needing to energize the motor. It’s a safer, faster alternative to traditional testing methods.

Patented Rotor and Stator Fault Detection

With Dynamic Stator and Rotor Signatures™, technicians can instantly assess rotor and stator integrity in AC induction motors. Combined with the TVS™ baseline reference, it ensures accurate fault isolation and repeatable test results.

Covers All Major Motor Types

From AC induction to DC motors, transformers, and even traction motors, the AT7™ Pro offers versatile support for a wide range of assets. It's suitable for commissioning, maintenance, troubleshooting, and predictive analytics.

Field-Proven Durability and Portability

Lightweight and rugged, the AT7™ Pro is purpose-built for industrial environments. It delivers precision diagnostics with a user-friendly interface and battery-powered flexibility—no external power needed.

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All-Test Pro Comparison Chart

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Export Restrictions

The information contained in this page pertains to products that may be subject to the International Traffic in Arms Regulations (ITAR) (22 C.F.R. Sections 120-130) or the Export Administration Regulations (EAR) (15 C.F.R. Sections 730-774) depending upon specifications for the final product; jurisdiction and classification will be provided upon request.

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