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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by China Machinery Industry Federation.
This standard is under the jurisdiction of the National Technical Committee 26 on Electric Rotating Machinery of Standardization Administration of China (SAC/TC 26).
This standard hereby is initially issued.
Three-phase Induction Motor for Variable Frequency Speed Adjusting Control for Shield Machine - Specification
1 Scope
This standard specifies the terms and definitions, type and basic parameters, technical requirements, test methods, inspection rules, marking, packaging and storage period of three-phase induction motor for variable frequency speed adjusting control for shield machine.
This standard is applicable to three-phase induction cage motor for variable frequency speed adjusting control for 4m, 6m, 9m, 12m, and 15m shield machine cutter (hereinafter referred to as “motor”). It is also a reference for the motors of other shield machine cutters.
2 Normative References
The following documents are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated reference, the latest edition (including any amendments) applies.
GB/T 191-2008 Packaging—Pictorial Marking for Handling of Goods
GB 755-2008 Rotating Electrical Machines—Rating and Performance
GB/T 997-2008 Rotating Electrical Machines—Classification of Types of Construction, Mounting Arrangements and Terminal Box Position (IM Code)
GB/T 1032-2012 Test Procedure for Three-phase Induction Motors
GB/T 1993-1993 Cooling Methods for Rotating Electrical Machines
GB/T 2423.4-2008 Environmental Testing for Electric and Electronic Products —Part 2: Test method—Test Db: Damp Heat, Cyclic (12h+12h Cycle)
GB/T 4942.1-2006 Degrees of Protection Provided by the Integral Design of Rotating Electrical Machines (IP code)—Classification
GB 10068-2008 Mechanical Vibration of Certain Machines with Shaft Heights 56mm and Higher—Measurement, Evaluation and Limits of Vibration
GB/T 10069.1-2006 Measurement of Airborne Noise Emitted by Rotating Electrical Machines and the Noise Limits—Part 1: Method for the Measurement of Airborne Noise Emitted by Rotating Electrical Machines
GB 14711 General Requirements for Safety of Small and Medium Size Rotating Electrical Machines
GB/T 21707-2008 Insulation Specification for Variable Frequency Adjustable Speed Definite Purpose Converter-fed Three-phase Induction Motors
GB/T 22670-2008 Test Procedures for Converter-fed Three Phase Cage Induction Motors
GB/T 22720.1-2008 Rotating Electrical Machines—Qualification and Type Tests for—Type I Electrical Insulation Systems used in Rotating Electrical Machines Fed from Voltage Converters
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB 755-2008 and the following apply.
3.1
shield machine
tunnel boring machine, which has the functions of excavation, cutting, conveying, assembling, lining, measuring, guiding and correcting.
Note: The tunnel boring machine includes earth pressure balance shield machine, slurry shield machine, hard rock TBM, etc. In this standard, “tunnel boring machine” is called "shield machine” for short.
3.2
breakout torque
stall torque at the lowest starting frequency of the motor.
Note: During the construction of the shield machine, the cutter head may be difficult to start due to deformation of the construction surface, long-term shutdown, etc. It is necessary to continue the operation of the cutter head in the escape mode, and the torque at this time is about 30% higher than the rated torque and is called the breakout torque.
3.3
typical value
average of the parameters of the first four motors, one of which has been type tested.
4 Type and Basic Parameter
4.1 The motor model consists of two parts: product code and specification code.
For example:
4.2 Enclosure protection class of the motor is IP55 (as specified in GB/T 4942.1-2006). Special requirements shall be determined through negotiation by the seller and the buyer.
4.3 The cooling mode of the motor is IC3W7 (according to GB/T 1993-1993). The cooling method beyond the scope of the standard shall be determined by the seller and the buyer. The primary or secondary cooling medium shall not cause damage to the product or the surrounding environment and shall be free from leakage and corrosion.
4.4 The structure and installation type of the motor are IMB5, IMB9, IMB10 (according to GB/T 997-2008), or other suitable installation types. The structure and installation type exceeding the scope of the standard shall be determined by the seller and the buyer.
4.5 Rating of the motor is continuously based on continuous duty system (S1) (according to GB 755-2008). The user and manufacturer are allowed to determine the quota based on other duty systems through agreement and to specify the corresponding rotating speed, load, load duration factor and other parameters and test methods.
4.6 Frequency range of motor at speed control by constant torque is from 5 Hz to the reference frequency; frequency range at speed control by constant power is from the reference frequency to 2 times the reference frequency; in case of frequency exceeding 2 times the reference frequency, it shall be determined by the seller and the buyer.
4.7 Motors shall be manufactured in accordance with the following nominal powers:
30kW, 75kW, 90 kW, 110kW, 132kW, 220kW, 250kW, 300 kW, 315 kW, 350 kW, 400 kW.
4.8 The corresponding relationship between the outer diameter, the number of poles, the nominal power, the rated voltage and the reference frequency of the stator plate of the motor shall be as specified in Table 1. When the motor parameters exceed the scope of Table 1, it shall be determined by both parties.
Table 1 Corresponding Relationship of Outer Diameter, Number of Poles, Nominal Power, Rated Voltage and Reference Frequency of Stator Plate
Outer diameter of stator plate mm Number of poles
4 6
Nominal power KW Rated voltage V Reference frequency Hz Nominal power KW Rated voltage V Reference frequency Hz
327 30 380(400) 50 - - -
493 75
90
560 220 660(690) 110 380(400) 37.5
50
132
220 660(690)
250
300
620 - - - 315 660(690) 50
400
Note: The rated voltages in parentheses are not preferentially recommended.
4.9 The shape, mounting dimensions and tolerances of motors shall meet the requirements of Figures 1~ 2 and Tables 2~ 3; the boundary dimensions shall not be larger than those specified in Figures 1~ 2 and Tables 2~ 3. Special requirement for dimensions and tolerance by the user, if any, may be determined upon negotiation by the seller and the buyer.
Figure 1 Single Shaft Extension Motor
Table 2 Single Shaft Extension Motor
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Type and Basic Parameter
5 Technical Requirements
6 Test Methods
7 Inspection Rules
8 Marking, Packaging and Storage Period
Figure 1 Single Shaft Extension Motor
Figure 2 Double Shaft Extension Motor
Table 1 Corresponding Relationship of Outer Diameter, Number of Poles, Nominal Power, Rated Voltage and Reference Frequency of Stator Plate
Table 2 Single Shaft Extension Motor
Table 3 Double Shaft Extension Motor
Table 4 Cooling Water Flow
Table 5 Guarantee Values of Efficiency
Table 6 Tolerance of Guarantee Value of Electrical Performance
Table 7 Corresponding Relationship between Thermal Classification and Temperature Rise Limit
Table 8 Interval after Power Failure
Table 9 Corresponding Relationship of Rated Voltage and Disruptive Test Voltage and Insulation Resistance
Table 10 Corresponding Relationship of Rated Voltage, Disruptive Test Voltage and Stator Winding Insulation Resistance after Cyclic Damp Heat Test
Table 11 Vibration Strength Limits (square root mean values) Expressed by Displacement, Speed, and Acceleration
Table 12 Noise Limits
Table 13 Type Inspection and Factory Inspection Items
