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GB 755-2008: [GB/T 755-2008] Rotating electrical machines -- Rating and performance
Delivery: 9 seconds. Download (and Email) true-PDF + Invoice.
Newer version: (Replacing this standard) GB/T 755-2019
Get Quotation: Click GB 755-2008 (Self-service in 1-minute)
Historical versions (Master-website): GB/T 755-2019
Preview True-PDF (Reload/Scroll-down if blank)
GB 755-2008
Rotating electrical machines.Rating and performance
ICS 29.160.01
K20
National Standards of People's Republic of China
GB 755-2008/IEC 60034-1.2004
Replacing GB 755-2000
The rotary electric machine rating and performance
(IEC 60034-1.2004, IDT)
Published 2008-06-19
2009-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China issued
Table of Contents
Preface Ⅰ
1 Scope 1
2 Normative References 1
2 3 Definitions
4 Duty 5
5 rating 14
6 on-site operating conditions 16
7 Electrical operating conditions 17
Thermal and 8 Test 21
Other performance tests 9 and 30
10 Nameplate 36
11 37 Other required
12 38 Tolerance
13 Electromagnetic compatibility (EMC) 39
14 Safety 40
Application of heat and determining the relative value of the expected lifetime TL guide Annex A (Informative Appendix) SlO duty is 41
Annex B (informative) Electromagnetic compatibility (EMC) limits 42
GB 755-2008/IEC 60034-1.2004
Foreword
Chapter 8 of this standard temperature and the temperature rise limit 8.10, Chapter 9 withstand voltage test 9.2, 9.6 Induction Motors operate safely
Line speed, 9.7 speed, Chapter 11 11.1 grounding protection, Chapter 13 Electromagnetic compatibility (EMC), Chapter 14, security is mandatory that
It is recommended. Mandatory provisions in the above table and an indicator of the mandatory technical content.
Equivalent standards adopted IEC 60034-1.2004 "rotating electric machine rating and performance" (11th edition).
This standard is based on the standard of the rotating electric machine, and which defines the technical requirements of basic performance of the motor. Related products in addition to special requirements
Such products should be included in the technical standards, the rest shall comply with this standard.
This standard replaces GB 755-2000.
This standard GB 755-2000 comparison, change of place.
a) the reference temperature water as the cooling medium, particularly temperature unchanged, over the submersible motor is not considered included in this range.
b) measure the distortion factor to increase the harmonic current of the load circuit requires.
c) In view of the production is no longer used or rarely A, E-grade insulation, canceled A, E content level insulation, and to deposit greater than 200kW
Class F insulation permissible temperature of the DC motor improved 5K.
d) voltage varies with changes temperature correcting section, raising the voltage, reducing the correction amount.
e) increased motor inspection test items.
f) modifying the terms of the withstand voltage test.
g) Modify the predetermined minimum torque cage induction motor.
h) increasing the maximum safe operating speed requirements cage induction motor.
i) synchronous motor telephone harmonic factor (THF) use amount of total harmonic distortion synchronous motor (THD) is represented.
j) Modify the tolerance table.
k) simplifies the description of the terms of EMC requirements.
The standard 6.5 "cooling water temperature not higher than 25 deg.] C", and according to our natural environment, if necessary, cooling water temperature not higher than + 33 ℃.
This standard Annex A, Annex B are informative annex.
The standard proposed by China Electrical Equipment Industrial Association.
This standard by the National Standardization Technical Committee of rotating electrical machines (SAC/TC26).
Responsible for the drafting of this standard. Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd., Shandong Motor Group Co., North
Bi Jie Beijing Electric Co., Ltd., Zhejiang Jinlong Electrical Machinery Co., Ltd., Hebei Electric Co., Ltd., Xi'an Simo Motor Co.
Division of Motor Manufacturing Co., Ltd. Shandong Qilu, China Northern Locomotive and Rolling Stock Industry Group Yongji Electric Factory, Wheeling Qingjiang Motor Co., Ltd.,
Wuxi Huada Motor Co., Ltd., Xiangtan Electric Co., Ltd., Wolong Electric Corp., CSIC Electrical Machinery Technology Co. Shares
The company, Lu'an Jianghuai Motor Co., Tellhow Technology Co., Ltd., Shanxi Ex Motor (Group) Co., Ltd., Shanghai Electric Division Electrical Branch
Technology Co., Ltd.
Participated in the drafting of this standard. Harbin Institute of Large Electric, China Electric Apparatus Research Institute, Lanzhou Electric Co., Ltd., Anhui Wannan
Motor Co., Ltd., Shanghai Nanyang Electric Co., Ltd., Hebei Hengshui Electric Co., Ltd., Shanghai-Hui Electric Co., Ltd., Hai Mai
Gert Motor Co., Ltd., Jiangsu Wuxi Anderson explosion, the Yangtze River Shipping Group Motor Factory, Jiangsu Dazhong Electric Corp..
This standard drafter. Li Xiuying, ENCHNOLOGY Fu Zhanghong PROJECTION Zhou Shoulian, Ye Jinwu, Yang Xiujun, Lee Jin, Wu Dezhong, Hezhi Science,
Cao Hongtao, Chen Li, Guo lighthouse, Meng China, Li Bao, the Liu Lihan, Kang Maosheng, Lin Yang pivot.
This standard supersedes the previous editions are.
--- GB 755-1987;
--- GB 755-2000.
GB 755-2008/IEC 60034-1.2004
The rotary electric machine rating and performance
Range 1
This standard applies to all rotating electrical machine, with the exception of the motor and under other international IEC standards, for example, IEC 60349.
Machine covered by this standard may also be substituted by the compliance requirements and other international standards IEC modify or supplement, e.g. GB 3836
(IEC 60079) and GB/T 7060 (IEC 60092).
Note. in order to apply, for example, resistance to radiation or aerospace motors and motor must be modified in certain provisions of this Standard special purposes, all of the other provisions
Still valid when it can be applied.
2 Normative references
Terms of the following documents become provisions of this standard by reference in this standard. For dated reference documents, all later
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to agreements based on this standard
Whether the latest versions of these documents. For undated references, the latest version applies to this standard.
GB/T 156-2007 standard voltage (IEC 60038.2002, MOD)
GB/T 755.2-2003 rotary electric machine (except traction motor) Test Method for determining losses and efficiency (IEC 60034-2.1996,
IDT)
GB 1971-2006 Terminal markings rotary electric machine direction of rotation (IEC 60034-8.2002, IDT)
GB/T 1993-1993 rotary motor cooling (eqv IEC 60034-6.1991)
GB/T 2900.25-2008 Electrotechnical terminology rotary electric machine (IEV50 (411).1996)
GB/T and a basic method and a specific terminal equipment safety rules conductor terminal identification marking and identification 4026-2004 HMI and
General application alphanumeric system (IEC 60445.1999, IDT)
GB 4343.1-2003 Electromagnetic compatibility appliances, electric tools and similar apparatus Part 1. Emission (CISPR
14-1.2001, IDT)
GB 4343.2-1999 Electromagnetic compatibility appliances, electric tools and similar apparatus Part 2. Immunity product
Class standards (idt, CISPR14-2.1997)
GB 4706.1-2005 household and similar electrical appliances - Safety - Part 1. General requirements (IEC 60335-1.2004, IDT)
GB T 4772.1-1999 rotary motor size and output power level Part 1 /. Frame 56 ~ 55 ~ 400 and the flange
1080 (idt IEC 60072-1.1991)
GB/T 4772.2-1999 rotary motor size and output power levels Part 2. Frame numbers 355 to 1000 and the flange
1180 ~ 2360 (idt IEC 60072-2.1990)
GB/T 4772.3-1999 rotary motor size and output power levels Part 3. low power built-in type motor flange No.
BF10 ~ BF50 (idt IEC 60072-3.1994)
GB 4824-2004 industrial, scientific and medical disturbance characteristics (ISM) radio equipment limits and measurement methods (CISPR
11.2003, IDT)
GB/T 4942.1-2006 protection (IP code) an overall structure of a rotating electric machine rating (IEC 60034-5.2000, IDT)
GB/T 5226.1-2002 Safety of machinery Electrical Equipment Part 1. General requirements (IEC 60204-1.2000, IDT)
GB/T 6113.101-2008 radio disturbance and immunity measuring apparatus specifications (CISPR16-1-1.2006, IDT)
GB/T 7064 turbine type synchronous motor technology requirements (GB/T 7064-2002, neqIEC 60034-3. 1988)
GB/T 13394-1992 letter symbols used in electrical technology symbol rotation amount of the motor (eqv IEC 60027-4. 1985)
GB/T 17948 (portions of) the rotary electric machine insulation Functional evaluation (IEC 60034-18 (portions), IDT)
GB 755-2008/IEC 60034-1.2004
GB/T 20113-2006 Electrical insulation (EIS) thermal fractionation (IEC 62114.2001, IDT)
GB/T 20161-2006 cage induction motors powered drive application guide (IEC 60034-17.2002, IDT)
GB/T 21210-2007 starting performance of single-speed three-phase cage induction motors (IEC 60034-12.2002, IDT)
GB/T 21211-2007 equivalent load of the rotary electric machine and overlay techniques - Indirect testing to determine temperature rise of the rotary electric machine
(IEC 61986.2002, IDT)
JB/T 7062-1993 Semiconductor converters connected to flag code (eqv IEC 60971. 1989)
JB/T 10098-2000 AC motor stator winding forming a voltage level of impact resistance (IEC 60034-15.1995, IDT)
High voltage test techniques IEC 60060-1 - Part 1. General definitions and test requirements
Safety of machinery Electrical machinery IEC 60204-11 Part 11. AC voltage or DC voltage 1000V 1500V
And a high voltage above 36kV or less required equipment
IEC 60027-1.1997 Letter symbols technology electrician - Part 1. General
IEC 60279. 1969 Measurement of AC charging motor winding resistance
IEC 61293 device power rating electrical safety requirements marker
3 Terms and Definitions
This uses standard GB/T 2900.25-2008 and the following terms and definitions.
And on cooling a cooling medium, in addition to 3.17 ~ 3.22, the rest see GB/T 1993-1993.
This standard "protocol" refers to the "agreement between the manufacturer and the user."
3.1
Typically the magnitude of a motor by the manufacturer under predetermined operating conditions specified.
Note. rated voltage or voltage range refers to the end of the line voltage or the rated voltage range.
3.2
A set of ratings and operating conditions.
3.3
Ration output value.
3.4
At a given moment, the value of the full charge is applied to the motor and the mechanical quantity by a circuit or mechanical means.
3.5
The motor is rotating (the others are normal operating conditions) output from the zero power.
3.6
Motor with its load rating runtime.
3.7
The magnitude of the motor full load operation.
NOTE. This concept applies to power, torque, current, speed and the like.
3.8
That the motor is neither motion nor a state of electrical or mechanical energy input.
GB 755-2008/IEC 60034-1.2004
3.9
Described a series of load condition of the motor is subjected, including starting, electric braking, idling, can be broken down and its duration and sequencing the like.
3.10
Continuous working system can be divided, short, periodic or aperiodic types. Cyclical work system comprises one or more of a predetermined duration
Load time constant; aperiodic the duty load and speed typically within permissible operating range of variation.
3.11
The duty cycle of the load (including starter and electric brake including) the duration of the entire cycle time ratio, expressed as a percentage.
3.12
The measured values of the motor at the minimum rated frequency, rated voltage and the rotational angle position of the rotor at all blocked on its axis of rotation generated torque.
3.13
The maximum steady-state current of the motor at rated frequency and the rated voltage of the rotor input from the power supply line in all angular positions blocked rms.
3.14
The motor at rated voltage, rated frequency, and zero rotation speed corresponding to the maximum torque generated by the torque steady asynchronous
Minimum.
This definition does not apply torque continuously increases with the decrease of the rotational speed induction motor.
NOTE. In certain rotation speed, in addition to the steady-state torque asynchronous, it will also work with the rotor angle generating harmonics as a function of the synchronous speed.
Under these speed correspond to certain power angle rotor acceleration torque may become negative.
Experience and calculations show that this is an unstable operating state, harmonic acceleration synchronizing torque of the motor does not interfere, may be excluded from this definition.
3.15
No steady state dump speed asynchronous motor maximum torque at rated voltage and frequency produced.
This definition does not apply torque continuously increases with the decrease of the rotational speed induction motor.
3.16
The maximum torque of the synchronous motor at rated voltage, the rated frequency and the rated field current, when the synchronous speed can produce.
3.17
One kind of heat transfer process, heat losses due to the motor is transmitted to the formation of the primary cooling medium, the medium can be exchanged continuously or
It is cooled in a cooler secondary cooling medium.
3.18
Gas or liquid heat transfer medium.
3.19
Gaseous or liquid medium temperature is lower than a motor member, which contact with the parts of the machine, and take away the heat which is released.
3.20
Temperature is below the primary cooling medium is a gas or a liquid medium, the primary cooling medium through the outer surface of the cooler or the heat released to the motor
GB 755-2008/IEC 60034-1.2004
The amount taken away.
3.21
One kind of winding, which is located inside the main cooling medium flows through the conductor insulation as the hollow part of the winding, the conduit, duct or channel, with the
Direct contact with the cooling section, regardless of its orientation.
3.22
Any other windings other than the winding directly cooled.
1) In any case, if not marked "indirect" or "direct" it means that the word is the indirect cooling coil.
3.23
In order to prevent individual insulated dielectric breakdown due to the main electric shock, in addition to increasing the main insulation.
3.24
Each infinitesimal mass element with the micro-objects to a predete...
Delivery: 9 seconds. Download (and Email) true-PDF + Invoice.
Newer version: (Replacing this standard) GB/T 755-2019
Get Quotation: Click GB 755-2008 (Self-service in 1-minute)
Historical versions (Master-website): GB/T 755-2019
Preview True-PDF (Reload/Scroll-down if blank)
GB 755-2008
Rotating electrical machines.Rating and performance
ICS 29.160.01
K20
National Standards of People's Republic of China
GB 755-2008/IEC 60034-1.2004
Replacing GB 755-2000
The rotary electric machine rating and performance
(IEC 60034-1.2004, IDT)
Published 2008-06-19
2009-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China issued
Table of Contents
Preface Ⅰ
1 Scope 1
2 Normative References 1
2 3 Definitions
4 Duty 5
5 rating 14
6 on-site operating conditions 16
7 Electrical operating conditions 17
Thermal and 8 Test 21
Other performance tests 9 and 30
10 Nameplate 36
11 37 Other required
12 38 Tolerance
13 Electromagnetic compatibility (EMC) 39
14 Safety 40
Application of heat and determining the relative value of the expected lifetime TL guide Annex A (Informative Appendix) SlO duty is 41
Annex B (informative) Electromagnetic compatibility (EMC) limits 42
GB 755-2008/IEC 60034-1.2004
Foreword
Chapter 8 of this standard temperature and the temperature rise limit 8.10, Chapter 9 withstand voltage test 9.2, 9.6 Induction Motors operate safely
Line speed, 9.7 speed, Chapter 11 11.1 grounding protection, Chapter 13 Electromagnetic compatibility (EMC), Chapter 14, security is mandatory that
It is recommended. Mandatory provisions in the above table and an indicator of the mandatory technical content.
Equivalent standards adopted IEC 60034-1.2004 "rotating electric machine rating and performance" (11th edition).
This standard is based on the standard of the rotating electric machine, and which defines the technical requirements of basic performance of the motor. Related products in addition to special requirements
Such products should be included in the technical standards, the rest shall comply with this standard.
This standard replaces GB 755-2000.
This standard GB 755-2000 comparison, change of place.
a) the reference temperature water as the cooling medium, particularly temperature unchanged, over the submersible motor is not considered included in this range.
b) measure the distortion factor to increase the harmonic current of the load circuit requires.
c) In view of the production is no longer used or rarely A, E-grade insulation, canceled A, E content level insulation, and to deposit greater than 200kW
Class F insulation permissible temperature of the DC motor improved 5K.
d) voltage varies with changes temperature correcting section, raising the voltage, reducing the correction amount.
e) increased motor inspection test items.
f) modifying the terms of the withstand voltage test.
g) Modify the predetermined minimum torque cage induction motor.
h) increasing the maximum safe operating speed requirements cage induction motor.
i) synchronous motor telephone harmonic factor (THF) use amount of total harmonic distortion synchronous motor (THD) is represented.
j) Modify the tolerance table.
k) simplifies the description of the terms of EMC requirements.
The standard 6.5 "cooling water temperature not higher than 25 deg.] C", and according to our natural environment, if necessary, cooling water temperature not higher than + 33 ℃.
This standard Annex A, Annex B are informative annex.
The standard proposed by China Electrical Equipment Industrial Association.
This standard by the National Standardization Technical Committee of rotating electrical machines (SAC/TC26).
Responsible for the drafting of this standard. Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd., Shandong Motor Group Co., North
Bi Jie Beijing Electric Co., Ltd., Zhejiang Jinlong Electrical Machinery Co., Ltd., Hebei Electric Co., Ltd., Xi'an Simo Motor Co.
Division of Motor Manufacturing Co., Ltd. Shandong Qilu, China Northern Locomotive and Rolling Stock Industry Group Yongji Electric Factory, Wheeling Qingjiang Motor Co., Ltd.,
Wuxi Huada Motor Co., Ltd., Xiangtan Electric Co., Ltd., Wolong Electric Corp., CSIC Electrical Machinery Technology Co. Shares
The company, Lu'an Jianghuai Motor Co., Tellhow Technology Co., Ltd., Shanxi Ex Motor (Group) Co., Ltd., Shanghai Electric Division Electrical Branch
Technology Co., Ltd.
Participated in the drafting of this standard. Harbin Institute of Large Electric, China Electric Apparatus Research Institute, Lanzhou Electric Co., Ltd., Anhui Wannan
Motor Co., Ltd., Shanghai Nanyang Electric Co., Ltd., Hebei Hengshui Electric Co., Ltd., Shanghai-Hui Electric Co., Ltd., Hai Mai
Gert Motor Co., Ltd., Jiangsu Wuxi Anderson explosion, the Yangtze River Shipping Group Motor Factory, Jiangsu Dazhong Electric Corp..
This standard drafter. Li Xiuying, ENCHNOLOGY Fu Zhanghong PROJECTION Zhou Shoulian, Ye Jinwu, Yang Xiujun, Lee Jin, Wu Dezhong, Hezhi Science,
Cao Hongtao, Chen Li, Guo lighthouse, Meng China, Li Bao, the Liu Lihan, Kang Maosheng, Lin Yang pivot.
This standard supersedes the previous editions are.
--- GB 755-1987;
--- GB 755-2000.
GB 755-2008/IEC 60034-1.2004
The rotary electric machine rating and performance
Range 1
This standard applies to all rotating electrical machine, with the exception of the motor and under other international IEC standards, for example, IEC 60349.
Machine covered by this standard may also be substituted by the compliance requirements and other international standards IEC modify or supplement, e.g. GB 3836
(IEC 60079) and GB/T 7060 (IEC 60092).
Note. in order to apply, for example, resistance to radiation or aerospace motors and motor must be modified in certain provisions of this Standard special purposes, all of the other provisions
Still valid when it can be applied.
2 Normative references
Terms of the following documents become provisions of this standard by reference in this standard. For dated reference documents, all later
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to agreements based on this standard
Whether the latest versions of these documents. For undated references, the latest version applies to this standard.
GB/T 156-2007 standard voltage (IEC 60038.2002, MOD)
GB/T 755.2-2003 rotary electric machine (except traction motor) Test Method for determining losses and efficiency (IEC 60034-2.1996,
IDT)
GB 1971-2006 Terminal markings rotary electric machine direction of rotation (IEC 60034-8.2002, IDT)
GB/T 1993-1993 rotary motor cooling (eqv IEC 60034-6.1991)
GB/T 2900.25-2008 Electrotechnical terminology rotary electric machine (IEV50 (411).1996)
GB/T and a basic method and a specific terminal equipment safety rules conductor terminal identification marking and identification 4026-2004 HMI and
General application alphanumeric system (IEC 60445.1999, IDT)
GB 4343.1-2003 Electromagnetic compatibility appliances, electric tools and similar apparatus Part 1. Emission (CISPR
14-1.2001, IDT)
GB 4343.2-1999 Electromagnetic compatibility appliances, electric tools and similar apparatus Part 2. Immunity product
Class standards (idt, CISPR14-2.1997)
GB 4706.1-2005 household and similar electrical appliances - Safety - Part 1. General requirements (IEC 60335-1.2004, IDT)
GB T 4772.1-1999 rotary motor size and output power level Part 1 /. Frame 56 ~ 55 ~ 400 and the flange
1080 (idt IEC 60072-1.1991)
GB/T 4772.2-1999 rotary motor size and output power levels Part 2. Frame numbers 355 to 1000 and the flange
1180 ~ 2360 (idt IEC 60072-2.1990)
GB/T 4772.3-1999 rotary motor size and output power levels Part 3. low power built-in type motor flange No.
BF10 ~ BF50 (idt IEC 60072-3.1994)
GB 4824-2004 industrial, scientific and medical disturbance characteristics (ISM) radio equipment limits and measurement methods (CISPR
11.2003, IDT)
GB/T 4942.1-2006 protection (IP code) an overall structure of a rotating electric machine rating (IEC 60034-5.2000, IDT)
GB/T 5226.1-2002 Safety of machinery Electrical Equipment Part 1. General requirements (IEC 60204-1.2000, IDT)
GB/T 6113.101-2008 radio disturbance and immunity measuring apparatus specifications (CISPR16-1-1.2006, IDT)
GB/T 7064 turbine type synchronous motor technology requirements (GB/T 7064-2002, neqIEC 60034-3. 1988)
GB/T 13394-1992 letter symbols used in electrical technology symbol rotation amount of the motor (eqv IEC 60027-4. 1985)
GB/T 17948 (portions of) the rotary electric machine insulation Functional evaluation (IEC 60034-18 (portions), IDT)
GB 755-2008/IEC 60034-1.2004
GB/T 20113-2006 Electrical insulation (EIS) thermal fractionation (IEC 62114.2001, IDT)
GB/T 20161-2006 cage induction motors powered drive application guide (IEC 60034-17.2002, IDT)
GB/T 21210-2007 starting performance of single-speed three-phase cage induction motors (IEC 60034-12.2002, IDT)
GB/T 21211-2007 equivalent load of the rotary electric machine and overlay techniques - Indirect testing to determine temperature rise of the rotary electric machine
(IEC 61986.2002, IDT)
JB/T 7062-1993 Semiconductor converters connected to flag code (eqv IEC 60971. 1989)
JB/T 10098-2000 AC motor stator winding forming a voltage level of impact resistance (IEC 60034-15.1995, IDT)
High voltage test techniques IEC 60060-1 - Part 1. General definitions and test requirements
Safety of machinery Electrical machinery IEC 60204-11 Part 11. AC voltage or DC voltage 1000V 1500V
And a high voltage above 36kV or less required equipment
IEC 60027-1.1997 Letter symbols technology electrician - Part 1. General
IEC 60279. 1969 Measurement of AC charging motor winding resistance
IEC 61293 device power rating electrical safety requirements marker
3 Terms and Definitions
This uses standard GB/T 2900.25-2008 and the following terms and definitions.
And on cooling a cooling medium, in addition to 3.17 ~ 3.22, the rest see GB/T 1993-1993.
This standard "protocol" refers to the "agreement between the manufacturer and the user."
3.1
Typically the magnitude of a motor by the manufacturer under predetermined operating conditions specified.
Note. rated voltage or voltage range refers to the end of the line voltage or the rated voltage range.
3.2
A set of ratings and operating conditions.
3.3
Ration output value.
3.4
At a given moment, the value of the full charge is applied to the motor and the mechanical quantity by a circuit or mechanical means.
3.5
The motor is rotating (the others are normal operating conditions) output from the zero power.
3.6
Motor with its load rating runtime.
3.7
The magnitude of the motor full load operation.
NOTE. This concept applies to power, torque, current, speed and the like.
3.8
That the motor is neither motion nor a state of electrical or mechanical energy input.
GB 755-2008/IEC 60034-1.2004
3.9
Described a series of load condition of the motor is subjected, including starting, electric braking, idling, can be broken down and its duration and sequencing the like.
3.10
Continuous working system can be divided, short, periodic or aperiodic types. Cyclical work system comprises one or more of a predetermined duration
Load time constant; aperiodic the duty load and speed typically within permissible operating range of variation.
3.11
The duty cycle of the load (including starter and electric brake including) the duration of the entire cycle time ratio, expressed as a percentage.
3.12
The measured values of the motor at the minimum rated frequency, rated voltage and the rotational angle position of the rotor at all blocked on its axis of rotation generated torque.
3.13
The maximum steady-state current of the motor at rated frequency and the rated voltage of the rotor input from the power supply line in all angular positions blocked rms.
3.14
The motor at rated voltage, rated frequency, and zero rotation speed corresponding to the maximum torque generated by the torque steady asynchronous
Minimum.
This definition does not apply torque continuously increases with the decrease of the rotational speed induction motor.
NOTE. In certain rotation speed, in addition to the steady-state torque asynchronous, it will also work with the rotor angle generating harmonics as a function of the synchronous speed.
Under these speed correspond to certain power angle rotor acceleration torque may become negative.
Experience and calculations show that this is an unstable operating state, harmonic acceleration synchronizing torque of the motor does not interfere, may be excluded from this definition.
3.15
No steady state dump speed asynchronous motor maximum torque at rated voltage and frequency produced.
This definition does not apply torque continuously increases with the decrease of the rotational speed induction motor.
3.16
The maximum torque of the synchronous motor at rated voltage, the rated frequency and the rated field current, when the synchronous speed can produce.
3.17
One kind of heat transfer process, heat losses due to the motor is transmitted to the formation of the primary cooling medium, the medium can be exchanged continuously or
It is cooled in a cooler secondary cooling medium.
3.18
Gas or liquid heat transfer medium.
3.19
Gaseous or liquid medium temperature is lower than a motor member, which contact with the parts of the machine, and take away the heat which is released.
3.20
Temperature is below the primary cooling medium is a gas or a liquid medium, the primary cooling medium through the outer surface of the cooler or the heat released to the motor
GB 755-2008/IEC 60034-1.2004
The amount taken away.
3.21
One kind of winding, which is located inside the main cooling medium flows through the conductor insulation as the hollow part of the winding, the conduit, duct or channel, with the
Direct contact with the cooling section, regardless of its orientation.
3.22
Any other windings other than the winding directly cooled.
1) In any case, if not marked "indirect" or "direct" it means that the word is the indirect cooling coil.
3.23
In order to prevent individual insulated dielectric breakdown due to the main electric shock, in addition to increasing the main insulation.
3.24
Each infinitesimal mass element with the micro-objects to a predete...
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