SIEMENS SIMOTICS SD 1LE5 series low-voltage motor

SIEMENS SIMOTICS SD 1LE5 series low-voltage motor

Overview and Product Positioning

Scope of application: Focusing on SIMOTICS SD 1LE5 series cast iron shell low-voltage three-phase asynchronous motors, with machine base sizes covering 400-450 and rated power of 355-1000kW, mainly used in industrial equipment such as pumps, fans, compressors, conveyors, extruders, cranes, etc;

Core series differentiation:

Series models, efficiency levels, key characteristics, applicable scenarios

1LE5534 IE4 (ultra efficient) low starting current, suitable for global certification, dual use of power grid/frequency converter with high energy efficiency requirements for general industrial scenarios

1LE5533 IE3 (Efficient Add Version) basic and efficient configuration, high cost-effectiveness, focusing on standard operating conditions and conventional industrial drive needs

1LE5583 IE3 (Efficient Pro Edition) multi voltage adaptation (380-690V), high starting torque project type business, frequency converter priority scenario

Product core positioning

Design concept: Modular structure (supporting terminal box rotation, installing encoder/brake), high power density (compact size suitable for small spaces), digital compatibility (supporting SIMOTICS Digital Data App to obtain data);

Compliance: Complies with the IEC 60034 series standards, EN 60034-30-1 efficiency standards, CE certification, and some versions comply with NEMA ISO14001 and UL/CSA requirements (D30/D31).

Key technical parameters

1. Basic electrical parameters (50Hz standard operating conditions)

Parameter category 1LE5534 (IE4) 1LE5533 (IE3) 1LE5583 (IE3 Pro)

Power range 355-1000kW 355-1000kW 335-980kW

Number of poles 2/4/6/8 poles 2/4/6/8 poles 2/4/6/8 poles

Rated speed 2988-744rpm (such as 2-pole 3000rpm, 8-pole 750rpm) 2986-742rpm 2988-744rpm

Rated torque 1790-8100Nm 1790-8100Nm 1600-7700Nm

Efficiency (4/4 load) 95.8% -97.5% 95.6% -97.0% 95.8% -97.4%

Power factor (cos φ) 0.79-0.91 0.80-0.91 0.80-0.91

Locking torque/rated torque 1.2-2.2 times 1.2-2.2 times 1.2-2.2 times 1.2-2.2 times

Locked rotor current/rated current 6.5-7.7 times 6.2-7.5 times 6.5-7.7 times

2. Environmental and structural parameters

Temperature and altitude:

Standard ambient temperature: -20~40 ℃, installation height ≤ 1000m;

Special adaptation: Low temperature version (-50~40 ℃, D02）、 Medium low temperature version (-40~40 ℃, D03）、 High humidity version (30-60g/m ³, N30; 60-100g/m ³, N31);

Derating coefficient: When the ambient temperature is greater than 40 ℃ or the installation height is greater than 1000m, it is necessary to follow thek HT Reduction, for example:

Installation height (m) Environmental temperature 30 ℃ Environmental temperature 40 ℃ Environmental temperature 45 ℃ Environmental temperature 50 ℃

1000 1.07 1.00 0.96 0.92

2000 1.00 0.94 0.90 0.86

3000 0.92 0.86 0.82 0.79

Protection and insulation:

Protection level: standard IP55, optional IP56 (H22), IP65 (H20);

Insulation System: DURIGNIT IR 2000, Temperature Class 155 (F), Insulation Voltage ≤ 720V (IVIC Class C, Suitable for Peak Voltage of Frequency Converter);

Anti corrosion coating: Standard S00 (RAL 7030 stone gray, C2 grade), optional S03 (marine grade C3), S04 (marine grade C5), S05 (internal coating).

Cooling method:

Cooling method code applicable scenario key parameters

Self ventilation IC411 standard operating condition 2-8 pole universal, fan rotates with rotor

Forced ventilation IC416 low-speed high load independent drive fan (F70), requires separate power supply

IC418 without external fan/fan cover relies on external airflow for cooling, requiring an external fan to provide airflow of ≥ 1.2m ³/min

Selection and Ordering Guide

1. Six step selection method

Clear requirements: Determine the rated power (kW), speed (rpm), voltage/frequency (e.g. 400V 50Hz), protection level (IP55), and installation structure (IM B3);

Pre selection type: Select sub series (such as 1LE5534 for IE4) based on environmental conditions (temperature>40 ℃ requires derating) and special requirements (anti-corrosion/low temperature);

Model selection: Match the machine base number, pole number, and rated torque from the selection table to determine the basic model (such as 1LE5534-4AB33);

Special version: Select additional options (such as insulated bearing L51, anti condensation heater Q02, terminal box rotating R09);

Confirm dimensions: Check the installation dimensions (such as the base length and flange aperture of IM B3), refer to the "Dimensions" section of the manual;

Supporting frequency converter: If a frequency converter drive is required, refer to Siemens Catalog D11/D18.1 to select the appropriate model.

2. Model coding rules (16 bit structure)

Position 1-7: Motor type (e.g. 1LE5534=IE4 cast iron motor);

Position 8-12: Machine frame number+number of poles+voltage (e.g. 4AB33=400 machine frame+4 poles+400V Δ/690VY);

Position 13-16: Voltage/Structure/Protection/Terminal Box Position (e.g. 4CB2=400V+IM V5+PTC Protection+Terminal Box Left 45 °);

Example: 1LE5534-4AB33-4CB2-Z H00 (IE4 motor, 400 base 4-pole, 400V, IM V5 structure, PTC protection, terminal box left 45 °, with protective cover).