GB 28736-2019 Minimum allowable values of energy efficiency and energy efficiency grades for welding machines English, Anglais, Englisch, Inglés, えいご
1 Scope
This standard specifies the energy efficiency grades, minimum allowable values of energy efficiency and test methods for arc welding machines and resistance welding machines.
This standard is applicable to arc welding machines and resistance welding machines designed for industrial and professional use and powered by voltages not exceeding those specified in GB/T 156.
The resistance welding machine to which this standard applies specifically refers to the resistance welding transformer that is finally installed with the frame, input circuit and secondary circuit.
This standard is not applicable to AC TIG arc welding machines, AC and DC dual-purpose TIG arc welding machines, power frequency secondary rectifier resistance welding machines, seam welding machines, resistance butt welding machines, flash butt welding machines, energy storage resistance welding machines, inverter AC resistance welding machines, separately sold resistance welding transformers and welding machines driven by mechanical equipment.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 156 Standard voltage
GB/T 2900.22 Electrotechnical terminology - Electric welding machine
GB/T 8118 The general specification for arc welding machines
GB/T 8366 Resistance welding - Resistance welding equipment - Mechanical and electrical requirements
GB/T 14549-1993 Quality of electric energy supply - Harmonics in public supply network
GB 15578 Safety requirements for resistance welding machines
GB/T 15579.1 Arc welding equipment - Part 1: Welding power sources
GB/T 25301 Resistance welding equipment - General specifications applicable to all transformers
3 Terms and definitions
For the purpose of this document, the terms and definitions given in GB/T 2900.22, GB/T 8118, GB/T 15579.1, GB/T 8366, GB 15578 and GB/T 25301 and the following apply.
3.1
minimum allowable values of energy efficiency for welding machines
minimum guaranteed value of the allowable efficiency of the arc welding machine in the rated state and maximum limit of the allowable short-circuit loss of the resistance welding machine in the rated gear under the test conditions specified in the standard
3.2
no-load loss for resistance welding machine
active power input to a resistance welding machine (including the rectifier, where applicable) when (1) its secondary is open and it is in the rated gear position; (2) a rated voltage at the rated frequency is applied to its primary winding
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Energy efficiency grades for welding machines
5 Technical requirements
6 Test methods
GB 28736-2019 Minimum allowable values of energy efficiency and energy efficiency grades for welding machines English, Anglais, Englisch, Inglés, えいご
1 Scope
This standard specifies the energy efficiency grades, minimum allowable values of energy efficiency and test methods for arc welding machines and resistance welding machines.
This standard is applicable to arc welding machines and resistance welding machines designed for industrial and professional use and powered by voltages not exceeding those specified in GB/T 156.
The resistance welding machine to which this standard applies specifically refers to the resistance welding transformer that is finally installed with the frame, input circuit and secondary circuit.
This standard is not applicable to AC TIG arc welding machines, AC and DC dual-purpose TIG arc welding machines, power frequency secondary rectifier resistance welding machines, seam welding machines, resistance butt welding machines, flash butt welding machines, energy storage resistance welding machines, inverter AC resistance welding machines, separately sold resistance welding transformers and welding machines driven by mechanical equipment.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 156 Standard voltage
GB/T 2900.22 Electrotechnical terminology - Electric welding machine
GB/T 8118 The general specification for arc welding machines
GB/T 8366 Resistance welding - Resistance welding equipment - Mechanical and electrical requirements
GB/T 14549-1993 Quality of electric energy supply - Harmonics in public supply network
GB 15578 Safety requirements for resistance welding machines
GB/T 15579.1 Arc welding equipment - Part 1: Welding power sources
GB/T 25301 Resistance welding equipment - General specifications applicable to all transformers
3 Terms and definitions
For the purpose of this document, the terms and definitions given in GB/T 2900.22, GB/T 8118, GB/T 15579.1, GB/T 8366, GB 15578 and GB/T 25301 and the following apply.
3.1
minimum allowable values of energy efficiency for welding machines
minimum guaranteed value of the allowable efficiency of the arc welding machine in the rated state and maximum limit of the allowable short-circuit loss of the resistance welding machine in the rated gear under the test conditions specified in the standard
3.2
no-load loss for resistance welding machine
active power input to a resistance welding machine (including the rectifier, where applicable) when (1) its secondary is open and it is in the rated gear position; (2) a rated voltage at the rated frequency is applied to its primary winding
Contents of GB 28736-2019
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Energy efficiency grades for welding machines
5 Technical requirements
6 Test methods
