YGSP Series High-Speed ​​Variable-Frequency Three-Phase Asynchronous Motor for AC Electric Dynamometers

1 Overview

The YGSP180–355 series high-speed, variable-frequency, three-phase asynchronous motors—designed specifically for AC electric dynamometers—represent the latest product developed by our company. Building upon the foundation of the original YSP series and incorporating advanced technologies from abroad, this series was created following extensive market research and data collection. These motors offer advantages such as low noise, minimal vibration, a wide speed-regulation range, reliable operation, and ease of maintenance. They are compatible with various domestic and international variable-frequency drive (VFD) systems, facilitating energy conservation and automated control. When operating at low speeds (below the rated frequency), the motors deliver high starting torque and maintain constant-torque operation with smooth performance, free from torque "creep." At high speeds (ranging from the rated frequency to the maximum operating frequency), they exhibit high overload capacity, ensuring constant power output. Forced ventilation is provided by an independently powered centrifugal fan, guaranteeing effective cooling across all operating speeds. The motors feature reliable insulation and excellent performance; advanced dielectric breakdown testing controls the quality of key materials like magnet wire and impregnating varnish, while dynamic dielectric measurements during the insulation process monitor varnish impregnation and baking to ensure consistent, reliable insulation quality. They are highly resilient against overvoltage caused by the high carrier frequencies of VFDs. Additionally, computer control interfaces can be configured to meet user requirements, facilitating the automation of the speed-regulation system.

The enclosure protection rating for this motor series is IP23, in accordance with GB4942.1 and IEC34-5 standards ("Degrees of protection provided by the integral design of rotating electrical machines").

The cooling method for this motor series is IC06, in accordance with GB/T1993 and IEC34-6 standards ("Methods of cooling for rotating electrical machines").

The construction and mounting arrangement is IMB3 (horizontal mounting with feet; end shields without flanges), complying with GB997 and IEC34-7 standards ("Classification of types of construction and mounting arrangements of rotating electrical machines"). The tables in this catalog list the technical data and mounting dimensions for various motor specifications rated at 380V (50Hz) and 400V (75Hz); motors with other voltage ratings, frequency ranges, and specifications can also be derived from this series.

2 Scope of Application

This series of motors is primarily used to drive dynamometer equipment, but can also drive various general-purpose machinery such as compressors, fans, metal-cutting machine tools, transport machinery, and other equipment.

Basic conditions for normal motor operation:

a Altitude not exceeding 1,000 m;

b Maximum ambient air temperature not exceeding 40°C; minimum ambient air temperature of -15°C;

c Monthly average maximum relative humidity of 90% during the most humid month, provided that the monthly average minimum temperature during that month does not exceed 25°C;

d Motor duty type: continuous duty (S1).

3 Model Designation

In accordance with the GB4831 standard, the motor model designation consists of a product code followed by a specification code. The product code represents the motor series, with meanings as follows:

Example:

4 Ordering Information

Please specify the following details when placing an order:

(1) Motor model: (YGSP355-6)

(2) Rated frequency: (50Hz)

(3) Nominal power: (250kW)

(4) Rated voltage: (380V)

(5) Number of poles: (6 poles)

(6) Protection class: (IP23)

(7) Mounting type: (IMB3)

(8) Direction of rotation: (Clockwise [viewed from the shaft extension end])

(9) Terminal box position: (Right side of the motor [viewed from the shaft extension end])

5 Precautions

a If the motor is required to drive loads with high moment of inertia, operate at higher maximum speeds, run under short-term overspeed or overload conditions, or meet other special requirements, relevant technical data must be provided and a technical agreement signed at the time of ordering. This serves as the basis for the motor's special design to ensure reliable operation;

b The technical performance data listed in the catalog tables are design values ​​(approximating actual values) intended for reference during design selection and ordering; they do not serve as acceptance criteria. Motor acceptance testing must be conducted in accordance with the applicable technical specifications;

c Technical data and dimensions in this catalog are subject to change without prior notice due to technological advancements or revisions to relevant domestic and international standards. Please request the official outline drawing from our company after placing an order.