JB/T 1012-2017Specification for YY series capacitor-run induction motors (English PDF)

1 Scope

This Standard specifies the types, basic parameters and dimensions, technical requirements, test methods, inspection rules, marking, packaging, storage and transportation of YY series permanent-split capacitor asynchronous motors.

This Standard is applicable to YY series permanent-split capacitor asynchronous motors (frame No.: 45 ~ 90) (hereinafter referred to as motors). All kinds of motors derived from this series of motors may also take this Standard as a reference.

2 Normative References

The following documents are indispensable to the application of this document. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document.

GB/T 755 Rotating Electrical Machines - Rating and Performance

GB/T 2828.1-2012 Sampling Procedures for Inspection by Attribute - Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection

GB/T 5171.1-2014 Small Power Motors - Part 1: General Technical Requirements

GB/T 5171.21-2016 Small Power Motors - Part 21: General Test Methods

GB 12350-2009 Safety Requirements of Small-power Motors

GB/T 22719.2-2008 Interturn Insulation of Random-wound Winding for AC Low-voltage Electrical Machines - Part 2: Test Limits

GB/T 32891.1-2016 Rotating Electrical Machines - Efficiency Classification (IE code) - Part 1: Grid-fed AC Motors

3 Types, Basic Parameters and Dimensions

3.1 The enclosure protection class of the motors is IP44, IP54 and IP55.

3.2 The cooling methods for the motors: IC 411 for 63 and above frame; IC 410 for 56 ---The altitude does not exceed 1,000 m;

---The highest ambient air temperature changes with the seasons, but does not exceed 40 °C;

---If the motors are designated to be used at an altitude of more than 1,000 m or an ambient air temperature of above 40 °C, it shall be handled in accordance with the stipulations of GB/T 755-2008;

---The lowest ambient air temperature is -15 °C;

---The monthly average maximum relative humidity of the wettest month is 90%, and the monthly average minimum temperature of that month is not higher than 25 °C.

4 Technical Requirements

4.3 During the operation of the motors, the deviation of the power supply voltage and frequency from the rated value shall comply with the stipulations of GB 5171.1-2014.

4.4 When the power, voltage and frequency of the motors are rated values, the guaranteed values of the efficiency and power factor shall comply with the stipulations of Table 14 in this Standard. The efficiency classification of the motors shall comply with the requirements of GB/T 32891.1-2016 and be indicated on the nameplate, as it is shown in 7.2 j) of this Standard.

NOTE: in terms of motors with a protection class of IP54 and IP55, when measuring their efficiency, the shaft sealing device may be removed for testing.

a) Mechanical inspection (in accordance with the stipulations of 6.1.3 and 6.1.4);

b) The determination of insulation resistance of the stator winding to the casing and the windings;

c) The determination of DC resistance of stator winding in actual cold state;

d) Stator winding interturn insulation impulse voltage resistance test or elevated voltage test (the interturn insulation impulse voltage resistance test may be implemented during the production process);

e) Voltage withstand test;

f) The determination of no-load current and loss (during type inspection, the no-load characteristic curve shall be taken);

g) The determination of locked-rotor current and loss (determined in cold state).

6 Inspection Rules

7 Marking, Packaging, Storage and Transportation

7.1 The method of marking the nameplate material and the data on the nameplate shall ensure that the writing is not easy to be worn out during the whole service period of the motors. […]