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Q/GDW 440-2010   The Local Calibrating Standard of Measuring Temperature Equipment for Oil Transformer (English Version)
Standard No.: Q/GDW 440-2010 Status:valid remind me the status change

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Implemented on:1998-10-1 Delivery: via email in 1 business day
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Standard No.: Q/GDW 440-2010
English Name: The Local Calibrating Standard of Measuring Temperature Equipment for Oil Transformer
Chinese Name: 油浸式变压器测温装置现场校准规范
Professional Classification: Q/    
Issued by: State Grid Corporation of China
Issued on: April 08, 2010
Implemented on: 1998-10-1
Status: valid
Superseded on:2011-12-1
Language: English
File Format: PDF
Word Count: 5000 words
Price(USD): 100.0
Delivery: via email in 1 business day
1 Scope This standard is applicable to local calibration of such measuring equipments of temperature that have been installed at the site for oil transformer. 2 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties whose enter into agreement according to these specifications are encouraged to research whether the latest editions of these labels are applied or not. For undated references, the latest edition of the normative document is applicable to these specifications. JJG 310-2002 "Verification Regulation for Pressure Type Thermometer" Q/GDW 168-2008 "Regulations of Condition-based Maintenance & Test for Electric Equipment" DL/T 572 "Operation Specification for Power Transformer" JB/T 6302-2005 "Oil-surface Thermometers for Transformers" JB/T 8450-2005 "Thermometers for Transformer Windings" 3 Terms and Definitions 3.1 Measuring equipment of temperature It is the generic term of the temperature measurement system consisted of in-situ pointer thermometer (including oil surface thermometer and winding thermometer) and remote display devices (including temperature element and temperature transmitter) mating with the oil transformer (reactor and converter transformer). 3.2 Pointer thermometer It is the pressure type thermometer used for measuring the oil temperature and winding temperature of oil transformer (reactor and converter transformer). 3.3 The measure range of pointer thermometer It is the absolute value of the difference between the upper limit and lower limit of the scale range of pointer thermometer. 3.4 The valid measure range It is the usual temperature measure range defined based on the upper limit 105℃ of Class A insulation and heat resistance of oil transformer. 3.5 Zero adjusting for pointer It is a regulation method that the indication of a calibration point is corrected by moving the pointer. 3.6 Multi-points zero adjusting It is the piece-wise linearization regulation done for several indication setting points of the remote display device based on the indication of local pointer thermometer that meets the error requirements. 3.7 The error between local thermometer and far thermometer It is difference between the remote displayed value and the indication of the in-situ pointer thermometer. 3.8 Compound sensor It is the combined type sensor by assembling the temperature bulb of pointer thermometer and the far temperature element into one entirety. 4 General The measuring equipment of temperature consists of pointer thermometer, remote display device, and so on, and the block diagram hereof is detailed in Figure 1.
Contents Foreword II 1 Scope 2 Normative References 3 Terms and Definitions 4 General 5 Technical Requirements 5.1 General Technical Requirements 5.2 Measuring Performance Requirements 5.3 Calibrating Devices 5.4 Calibration Conditions 5.5 Calibration Items 6 Calibration Methods 6.1 Appearance Inspection 6.2 Insulation Resistance 6.3 Indication Error between Pointer Thermometer and Remote Display 6.4 The Error between Local Thermometer and Far Thermometer 6.5 Actuated Error of Connection Point 7 Treatment of Calibration Result 8 Calibration Cycle Appendix A (Normative) Format of Calibration Record Appendix B (Normative) Format of Calibration Certificate Appendix C (Normative) Specification for Thermometer Purchase Appendix D (Informative) Thermal Simulation Test of Winding Thermometer Appendix E (Informative) Ambient Temperature Influence Quantity Test Appendix F (Informative) Guideline for Temperature Protection of Oil Transformer
Referred in Q/GDW 440-2010:
*JJG 310-2002 Filled System Thermometers
*Q/GDW 168-2008 Regulations for condition-based maintenance and test of transmission and distribution equipment
*DL/T 572-2010 Operation specification for power transformer
*JB/T 6302-2005 Oil-surface thermometers for transformers
*JB/T 8450-2005 Thermometers for transformer windings
Code of China
Standard
Q/GDW 440-2010   The Local Calibrating Standard of Measuring Temperature Equipment for Oil Transformer (English Version)
Standard No.Q/GDW 440-2010
Statusvalid
LanguageEnglish
File FormatPDF
Word Count5000 words
Price(USD)100.0
Implemented on1998-10-1
Deliveryvia email in 1 business day
Detail of Q/GDW 440-2010
Standard No.
Q/GDW 440-2010
English Name
The Local Calibrating Standard of Measuring Temperature Equipment for Oil Transformer
Chinese Name
油浸式变压器测温装置现场校准规范
Chinese Classification
Professional Classification
Q/
ICS Classification
Issued by
State Grid Corporation of China
Issued on
April 08, 2010
Implemented on
1998-10-1
Status
valid
Superseded by
Superseded on
2011-12-1
Abolished on
Superseding
Language
English
File Format
PDF
Word Count
5000 words
Price(USD)
100.0
Keywords
Q/GDW 440-2010, Q/GDWT 440-2010, QGDWT 440-2010, Q/GDW440-2010, Q/GDW 440, Q/GDW440, Q/GDWT440-2010, Q/GDWT 440, Q/GDWT440, QGDWT440-2010, QGDWT 440, QGDWT440
Introduction of Q/GDW 440-2010
1 Scope This standard is applicable to local calibration of such measuring equipments of temperature that have been installed at the site for oil transformer. 2 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties whose enter into agreement according to these specifications are encouraged to research whether the latest editions of these labels are applied or not. For undated references, the latest edition of the normative document is applicable to these specifications. JJG 310-2002 "Verification Regulation for Pressure Type Thermometer" Q/GDW 168-2008 "Regulations of Condition-based Maintenance & Test for Electric Equipment" DL/T 572 "Operation Specification for Power Transformer" JB/T 6302-2005 "Oil-surface Thermometers for Transformers" JB/T 8450-2005 "Thermometers for Transformer Windings" 3 Terms and Definitions 3.1 Measuring equipment of temperature It is the generic term of the temperature measurement system consisted of in-situ pointer thermometer (including oil surface thermometer and winding thermometer) and remote display devices (including temperature element and temperature transmitter) mating with the oil transformer (reactor and converter transformer). 3.2 Pointer thermometer It is the pressure type thermometer used for measuring the oil temperature and winding temperature of oil transformer (reactor and converter transformer). 3.3 The measure range of pointer thermometer It is the absolute value of the difference between the upper limit and lower limit of the scale range of pointer thermometer. 3.4 The valid measure range It is the usual temperature measure range defined based on the upper limit 105℃ of Class A insulation and heat resistance of oil transformer. 3.5 Zero adjusting for pointer It is a regulation method that the indication of a calibration point is corrected by moving the pointer. 3.6 Multi-points zero adjusting It is the piece-wise linearization regulation done for several indication setting points of the remote display device based on the indication of local pointer thermometer that meets the error requirements. 3.7 The error between local thermometer and far thermometer It is difference between the remote displayed value and the indication of the in-situ pointer thermometer. 3.8 Compound sensor It is the combined type sensor by assembling the temperature bulb of pointer thermometer and the far temperature element into one entirety. 4 General The measuring equipment of temperature consists of pointer thermometer, remote display device, and so on, and the block diagram hereof is detailed in Figure 1.
Contents of Q/GDW 440-2010
Contents Foreword II 1 Scope 2 Normative References 3 Terms and Definitions 4 General 5 Technical Requirements 5.1 General Technical Requirements 5.2 Measuring Performance Requirements 5.3 Calibrating Devices 5.4 Calibration Conditions 5.5 Calibration Items 6 Calibration Methods 6.1 Appearance Inspection 6.2 Insulation Resistance 6.3 Indication Error between Pointer Thermometer and Remote Display 6.4 The Error between Local Thermometer and Far Thermometer 6.5 Actuated Error of Connection Point 7 Treatment of Calibration Result 8 Calibration Cycle Appendix A (Normative) Format of Calibration Record Appendix B (Normative) Format of Calibration Certificate Appendix C (Normative) Specification for Thermometer Purchase Appendix D (Informative) Thermal Simulation Test of Winding Thermometer Appendix E (Informative) Ambient Temperature Influence Quantity Test Appendix F (Informative) Guideline for Temperature Protection of Oil Transformer
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