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1LA9166-2LA91-ZT30
Siemens
The Siemens 1LA9166-2LA91-ZT30 is a 2-pole squirrel-cage AC induction motor from the 1LA9 series, designed for general industrial applications. This motor delivers 15 kW (20 HP) rated power at 400V/690V (Delta/Star), with a nominal speed of approximately 2930-2970 rpm at 50Hz. It features IP55 protection, IC411 self-ventilated cooling, and Class F insulation with Class B temperature rise. The IM B3 foot-mounted design with a 160mm shaft height ensures compatibility with standard pump, fan, compressor, and conveyor installations. The Z-code suffix indicates factory-special options which may include specific bearing arrangements, special grease, or tropicalization coatings — always verify against the physical nameplate before commissioning.
FAQ
Q: What is the rated power of the Siemens 1LA9166-2LA91-ZT30 motor?
A: The rated power is 15 kW (approximately 20 HP) at 50Hz, 400V.
Q: What does the "Z" suffix mean in 1LA9166-2LA91-ZT30?
A: The "-Z" indicates factory-special options that deviate from the standard catalog motor. "T30" is an internal specification code that may refer to specific bearing arrangements, special grease, or tropicalization. The exact meaning requires the original order confirmation or physical nameplate.
Q: What are the physical dimensions and mounting type?
A: It uses IM B3 foot-mounted construction with a 160mm shaft height. The shaft diameter is approximately 42mm.
Q: What is the protection rating of this motor?
A: IP55 — dust-tight and protected against water jets.
Q: Can this motor be used with a Variable Frequency Drive (VFD)?
A: Yes, the insulation is Class F rated. However, the "T30" code may specifically include provisions for VFD operation (such as insulated bearings). Verify the nameplate and documentation before VFD use.
Q: What is the efficiency class of this motor?
A: IE2 standard, with some production batches potentially reaching IE3 depending on the manufacturing year.
Q: What applications is this motor suitable for?
A: Pumps, fans, compressors, conveyor systems, and general industrial machinery requiring continuous duty (S1) operation.
| Siemens 1LA9 Series AC Induction Motor 1LA9166-2LA91-ZT30 | |
| Siemens 1LA9166-2LA91-ZT30 - Technical Specifications | |
| Feature | Specification |
| - | - |
| Manufacturer | Siemens |
| Series | 1LA9 (Simotics GP equivalent) |
| Frame Size | 160 |
| Number of Poles | 2 |
| Motor Type | Squirrel-Cage Induction Motor |
| Rated Power | 15 kW (20 HP) |
| Rated Voltage | 400V Δ / 690V Y |
| Rated Current @400V | ~28.5 A |
| Rated Current @690V | ~16.5 A |
| Frequency | 50 Hz |
| Speed | 2930 - 2970 rpm |
| Efficiency Class | IE2 / IE3 (varies by production year) |
| Power Factor (cos φ) | ~0.88 |
| Construction Type | IM B3 (Foot mounting) |
| Shaft Height | 160 mm |
| Shaft Diameter | ~42 mm |
| Degree of Protection | IP55 |
| Cooling Method | IC411 (Self-ventilated) |
| Insulation Class | F (Temperature rise limited to Class B) |
| Ambient Temperature | -20°C to +40°C |
| Max Altitude | 1000 m (without derating) |
| Duty Cycle | S1 (Continuous running) |
| Special Code | -Z: Factory specials; T30: Application-specific configuration |
