Description
Product Introduction
The ABB Baldor-Reliance CDP3445 is a general-purpose, 1 HP Permanent Magnet DC (PMDC) motor engineered for variable-speed industrial drive applications. Operating at a 90V DC armature rating with a base speed of 1750 RPM, the CDP3445 delivers high starting torque and continuous linear speed control when paired with SCR or PWM DC drive controllers.
Built in a standard NEMA 56C frame, the CDP3445 features a dual C-Face mounting flange and a rigid bolt-on removable base for installation flexibility onto gearboxes, pumps, or machine frames. Its Totally Enclosed Non-Ventilated (TENV) cast-iron and steel enclosure protects internal windings and brush contacts from harsh ambient contaminants, dirt, and moisture.
Key Technical Specifications
| Parameter | Specification |
| Manufacturer | ABB / Baldor-Reliance |
| Model / Catalog No. | CDP3445 |
| Motor Type | Permanent Magnet DC (PMDC) |
| Horsepower | 1.0 HP |
| Base Speed | 1750 RPM |
| Armature Voltage | 90V DC |
| Full Load Amps | 10.0 A |
| Frame Size | NEMA 56C (C-Face with Removable Base) |
| Enclosure Rating | TENV (Totally Enclosed Non-Ventilated) |
| Insulation Class | Class F Insulation |
| Service Factor | 1.0 |
| Bearings | Sealed Ball Bearings |
Application Scenarios & The “Trench” Experience
When a variable-speed conveyor or metering drive shuts down unexpectedly, finding a direct drop-in replacement with matching mounting and voltage specs prevents long line stoppages. In field operations, replacing an overheating, vented DC motor on a dusty packaging line with the TENV-rated CDP3445 eliminates downtime caused by particulate buildup inside the armature commutators.
- Material Handling & Conveyors – Delivers smooth, low-speed torque for package sorting lines and indexers.
- Metering & Displacement Pumps – Provides accurate speed regulation across variable flow rate applications.
- Packaging & Labeling Machinery – Controls feed rollers and web tension lines requiring linear acceleration.
- Machine Tools & Mixers – Drives small machine shop spindles and industrial liquid agitators.
Transparency SOP: Quality Assurance & Testing
Every ABB Baldor CDP3445 motor undergoes dynamic quality verification prior to dispatch:
- Physical & Shaft Inspection: Checking keyway dimensions, shaft runout, C-face mounting threads, and terminal box hardware.
- Winding & Insulation Resistance Test: Performing megohmmeter (hi-pot) testing between armature terminals and frame ground to ensure insulation integrity.
- No-Load DC Run Test: Powering the motor via a calibrated DC drive to verify smooth rotation, balanced current draw, and proper brush seating.
- Bearing & Vibration Audit: Running the motor at full rated 1750 RPM speed to measure bearing noise levels and mechanical vibration.
- Brush & Commutator Check: Inspecting carbon brush length, spring tension, and commutator surface finish before final anti-corrosion prep and packaging.
The Veteran’s Tech Trap Guide (Crucial Value-Add)
⚠️ Verify Armature Voltage vs. Input AC Power: The CDP3445 requires 90V DC at the armature, which is typically derived from a 115V AC single-phase SCR controller. Connecting this motor to a 180V DC drive (meant for 230V AC supply) will over-speed and damage the armature.
❗ Observe Form Factor Ratings: Check your DC drive’s Form Factor rating (FF). PMDC motors run cooler and quieter on drives with low form factor numbers (FF ~1.05 for PWM, FF ~1.35 for SCR). High ripple currents from cheap drives increase motor operating temperatures.
⚠️ Check TENV Thermal Limits: Because the CDP3445 is a TENV motor (no external cooling fan), it relies on convection for heat dissipation. Avoid mounting it in tightly unventilated enclosures or adjacent to high-temperature process lines without ambient airflow.
CDP3445
CDP3445
Frequently Asked Questions (FAQ for Conversion)
Q: Does the CDP3445 require an external field supply?
A: No. The CDP3445 is a Permanent Magnet DC (PMDC) motor, meaning field magnetic flux is generated by internal ceramic magnets—no field wiring is required.
Q: Can the CDP3445 be mounted both horizontally and vertically?
A: Yes. With its sealed ball bearings and standard 56C face, the CDP3445 can be mounted in horizontal or vertical orientations depending on drive alignment requirements.
Q: Can I reverse the rotation direction of the CDP3445?
A: Yes. Reversing the polarity of the two armature leads (A1 and A2) connected to your DC drive reverses the motor’s shaft rotation.
Q: What is the difference between TENV and TEFC motors?
A: TENV (Totally Enclosed Non-Ventilated) motors do not have an external cooling fan and rely on surface radiation/convection. TEFC (Totally Enclosed Fan Cooled) motors feature an external shaft-driven fan.
Q: What warranty comes with this motor?
A: All CDP3445 motors supplied come backed by a comprehensive 12-month functional warranty from the date of shipment.
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