GB/T 21969-2021YGP series variable-frequency adjustable-speed three-phase induction motors for roll table application—Technical specification (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document replaces GB/T 21969-2008 "Technical Conditions for Variable-frequency Speed-regulating Three-phase Asynchronous Motors for YGP Series Rollers", and Compared with GB/T 21969-2008, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

---Added the motor model and example description (see 4.1);

---Increase the protection level IP56 (see 4.2);

---Increase the reference frequency of the motor 30Hz (see 4.5), increase the number of poles of the motor 10 poles and 12 poles (see 4.7), and increase 6 poles~ 12-pole motor (30Hz) data (see 4.9, Table 3), the test method of reference frequency 30Hz motor has been added (see 6.5, 6.6 And 6.8);

--- Deleted "When the motor is used in a continuous working system, its temperature rise is at the rated frequency and voltage, according to the power test of the S1 working system. Nuclear" (see 3.7 of the 2008 edition);

---Added "the tolerance of the moment of inertia of the motor is 10% of the guaranteed value" (see 4.11);

---Changed the constant torque frequency range, from "5~50" to "3~50", changed 1500r/min, 280L1~315M2 motor "Rated torque" data (see Table 2, 6.7.2 and 6.8, Table 2, 6.5.2 and 6.6 of the 2008 edition);

---Change the K basic dimensions and position tolerances of table 4 and table 6 for frame numbers 160S~225M, and change table 5 and table 6 for frame numbers The basic size of S from 112M to 250M has increased its position tolerance (see Table 4 to Table 6, and Table 3 to Table 5 in the 2008 edition);

---Change the limit deviation of the key width (see Table 7, Table 6 of the 2008 edition);

---Added "The deviation of any one phase of the DC resistance of the motor three-phase stator winding in the actual cold state from the three-phase average value should not exceed ±2% of the average value" (see 5.7);

--- Added "The cold insulation resistance value of the stator winding of the motor should not be less than 5Mohm" (see 5.8);

---Added short-time over torque test requirements (see 5.9);

---Added 1s test (see 5.11);

---The regulations on the unevenness of the air gap of the motor have been deleted, and the inspection of the unevenness of the air gap has been cancelled accordingly (see the 2008 edition of the 4.18);

--- The requirements for motor vibration and noise have been changed (see 5.15, 5.16, 4.16 and 4.17 in the 2008 edition);

--- Added "The grounding terminal should not be used for other purposes except for protective grounding" (see 5.17);

---Added the requirements for the direction of rotation of the motor (see 5.19, 6.10);

---Added the motor appearance and assembly quality requirements (see 5.21);

---Added the test of conventional motor items (see 5.22);

--- Express the inspection rules in a table (see Chapter 7, Chapter 5 of the 2008 edition);

---Added the test requirements of 355~400 4-pole motors (see 6.5, 6.6 and 6.8);

---Added "cooling method" and "noise limit" items (see 8.2).

1 Scope

This document specifies the type, basic parameters and dimensions, technical requirements, test Inspection methods, inspection rules and signs, packaging and warranty period.

This document is applicable to all kinds of three-phase asynchronous motors with variable frequency speed regulation for roller tables (frame size 112~400) (hereinafter referred to as electric motors). All genus Refer to the implementation of various series motors derived from this series of motors.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 191 Packaging, storage and transportation pictorial signs

GB/T 755 Rotating motor rating and performance

GB/T 756 Cylindrical shaft extension of rotating electric machine

GB/T 997 Classification of structure type, installation type and junction box position of rotating electric machine (IM code)

GB/T 1032 Three-phase asynchronous motor test method

GB/T 1096 Ordinary flat key

GB/T 1958 Product Geometric Technical Specification (GPS) Geometric Tolerance Testing and Verification

GB/T 1971 Rotating motor wire end marking and direction of rotation

GB/T 1993 Rotating electric machine cooling method

GB/T 2423.4 Environmental testing of electrical and electronic products Part 2: Test method Test Db. Alternating damp heat (12h 12h cycle)

GB/T 4772.1 Rotating electrical machine size and output power rating Part 1: Frame number 56~400 and flange number 55~1080

GB/T 4942.1 Degree of protection of the overall structure of rotating electrical machines (IP code) Classification

GB/T 10068 The measurement, evaluation and limits of mechanical vibration of motors with a shaft center height of 56mm and above

GB/T 10069.1 Rotating electrical machine noise measurement method and limit value Part 1: Rotating electrical machine noise measurement method

GB/T 10069.3 Rotating electrical machine noise measurement methods and limits Part 3: Noise limits

GB/T 12351 Environmental technical requirements for tropical rotating electrical machines

GB 20237-2006 Safety requirements for crane metallurgy and shielded motors

GB/T 22670 Inverter-powered three-phase cage induction motor test method

GB/T 22719.1 Inter-turn insulation of scattered windings of AC low-voltage motors Part 1: Test methods

GB/T 22719.2 Inter-turn insulation of scattered windings of AC low-voltage motors Part 2: Test limits

3 Terms and definitions

There are no terms and definitions that need to be defined in this document.