Specifications Overview:
The document provides detailed specifications for the QTR 78 series motors, including models QTR-A-78-17, QTR-A-78-25, QTR-A-78-34, and QTR-A-78-60. All specifications are subject to a ±10% tolerance.

Performance:
- Winding Type: Model QTR-A-78-17 does not have a winding type, while the others do.
- Motor Type: All models are 3-phase synchronous with a maximum voltage of 400 Vac rms (565 Vdc).
- Ultimate Torque: Ranges from 1.24 Nm to 10.91 Nm depending on the model.
- Peak Torque: Ranges from 0.84 Nm to 7.67 Nm.
- Continuous Torque: Ranges from 0.57 Nm to 4.47 Nm.
- Maximum Speed: Varies significantly between models, with a maximum of 9000 rpm for most models at Umax.

Electrical Characteristics:
- Ultimate Current: Ranges from 13.87 Arms to 27.96 Arms.
- Peak Current: Ranges from 7.49 Arms to 15.32 Arms.
- Continuous Current: Ranges from 4.83 Arms to 10.54 Arms.
- Back EMF: Varies between models, with ph-phpeak ranging from 10.1 V/krpm to 45.7 V/krpm.
- Resistance and Induction: Resistance per phase and induction per phase are specified for each model.

Thermal Properties:
- Continuous Power Loss: Ranges from 76 W to 302 W.
- Thermal Resistance: Ranges from 0.25 K/W to 0.98 K/W.
- Thermal Time Constant: Ranges from 14 s to 23 s.
- No temperature sensor is included.

Mechanical Specifications:
- Stator Outer Diameter: 78 mm for all models.
- Rotor Inner Diameter: 29 mm for all models.
- Stator Height: Varies from 18.3 mm to 62.3 mm.
- Lamination Stack Height: Ranges from 8 mm to 48 mm.
- Rotor Inertia and Mass: Detailed for each model, with rotor inertia ranging from 1.3E-05 kg m² to 7.6E-05 kg m².
- Cable Specifications: Includes mass and type, with a standard length of 0.5 m.

Additional Information:
- The document mentions that actual values depend on bus voltage and advises checking the T/n diagram in the manual or online simulation tool.
- Mounting instructions and tolerances are available in the torque installation manual, with additional resources such as 3D CAD files downloadable from the website.