GB/T 13501-2026Test methods for insulation compatibility of electric motors for hermetic refrigeration compressors (English PDF)

Foreword

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

This document supersedes GB/T 13501-2008 "Test Method for Insulation Compatibility of Electric Motors for Hermetic Refrigeration Compressors". Compared with GB/T 13501-2008, apart from structural adjustments and editorial changes, the main technical changes are as follows.

---The requirements for autoclaves have been changed (see 4.1, 2008 version 4.1);

---The notation for the motor power range has been changed (see 4.2, 2008 edition 4.2);

---The specifications for gas leak detectors have been changed (see 4.3, 2008 edition of 4.3);

---The specifications for electrical contact pressure gauges have been changed (see 4.4, 2008 edition of 4.4);

---The insulation material category "Winding bobbin, insulating bushing" has been revised and added (see Chapter 5, Chapter 5 of the 2008 edition);

---Added refrigerant categories such as R1234yf, R1234ze, R290, R32, R502, R507A, and R744 (see Chapter 1, 6.1, and Table 2);

---The heat resistance rating and the internal test temperature have been increased (see Table 2 and Table A.1);

---The test cycle for DC motors has been increased (see Table 2);

---The limits for water content in refrigeration oil have been changed (see Table 2, Note 3 of Table 2 in the 2008 edition);

---Leak detection requirements have been changed (see 6.2.5, 2008 version of 6.2.5);

---The standards for the number of test cycles and test time have been added (see 6.2.7, Table A.1);

---The requirements for checking the test voltage before testing have been changed (see 7.1, 7.1 in the 2008 edition);

---The test requirements and content for "Electrical Strength Test" have been added (see A.3.1).

1 Scope

This document describes the test method for electrical insulation compatibility of electric motors (hereinafter referred to as "electric motors") used in hermetic refrigeration compressors.

This document applies to electric motors for hermetic refrigeration compressors operating with refrigerants such as R22, R134a, R404A, R410A, R407C, R600a, R1234yf, R1234ze, R290, R32, R502, R507A and R744.

Motors for compressors using other refrigerants may refer to it.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document.

GB/T 755 Ratings and Performance of Rotating Electrical Machines

GB/T 16630 Refrigeration Oil

JB/T 6738 General Technical Requirements for Single-Phase Asynchronous Motors Used in Hermetic Refrigeration Compressors

JB/T 10597 General Technical Requirements for Three-Phase Asynchronous Motors Used in Hermetic Refrigeration Compressors

JB/T 12226 Brushless DC motor for hermetic refrigeration compressors

3 Terms and Definitions

The following terms and definitions apply to this document.