GB/T 33984-2017 in English
VALIDMotor soft-start device--Terminology
- Issued on:2017-07-12
- Implemented on:2018-02-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$146.00
| Standard No: | GB/T 33984-2017 |
| Document status: | VALID |
| Title in English: | Motor soft-start device--Terminology |
| Title in Chinese: | 电动机软起动装置 术语 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2017-07-12 |
| Implemented on: | 2018-02-01 |
| ICS Classification: | 29.200-Rectifiers. Convertors. Stabilized power supply |
| Chinese Classification: | K46-Power semiconductor device and parts |
| Professional Classification: | GB-National Standard |
| Related Topics: | GBT33984
GB/T 33984-2017 |
《GB/T 33984-2017电动机软起动装置 术语》由TC60（全国电力电子系统和设备标准化技术委员会）归口，TC60SC5（全国电力电子系统和设备标准化技术委员会电机软起动分会）执行，主管部门为中国电器工业协会。
Introduction
GB/T 33984—2017: In-depth interpretation of the terminology of motor soft starters
Standard Overview
This standard GB/T 33984—2017 "Terminology of Motor Soft Starters" is under the jurisdiction of the National Technical Committee for Standardization of Power Electronic Systems and Equipment, and standardizes the basic terminology for the production and application of AC motor soft starters.
Core Terms Comparison Table
| Term Category | Term Name | Brief Definition |
|---|---|---|
| Basic Terms | Soft Start Device | A combination switch and its control, measurement and regulation device, used to achieve smooth start and stop of motor. |
| Starting Mode | Reduced Voltage Soft Start | Soft start is achieved by reducing the voltage at the motor terminals. |
| Adjustment method | Rotor variable resistance soft start | The rotor circuit is connected in series with a variable resistor to limit the current and increase the starting torque. |
Technical background and evolution analysis
Background: Traditional direct starting of motors will cause a sudden drop in grid voltage, affecting the operation of other equipment. To solve this problem, soft start devices came into being.
Technological evolution:From simple step-down starting to intelligent adjustment variable frequency starting, the technology is constantly upgraded:
- First generation: liquid resistor soft start and thermal resistor soft start
- Second generation: auto-coupling step-down soft start and magnetic control soft start
- Third generation: variable frequency soft start and torque control soft start
Implementation and recommendations of the standard
Scope of application:Applicable to AC motors and related equipment.
Selection suggestions:
- Choose the appropriate starting mode (light load/heavy load) according to the load characteristics
- Consider the grid conditions to avoid excessive voltage fluctuations
- Choose a reliable brand and maintenance cycle based on the equipment life
Maintenance management:Regularly check the control parameters and operating status of the soft starter to ensure its long-term stable operation.
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