ISO 5826:2014
Resistance welding equipment — Transformers — General specifications applicable to all transformers
ISO 5826:2014 gives specifications applicable to transformers of IEC 61140 protection class I or II of the following types for use in resistance welding equipment: single-phase transformers for a.c. welding, typically operating at 50 Hz or 60 Hz; single-phase transformers with connected rectifier for d.c. welding, typically operating at 50 Hz or 60 Hz; single-phase inverter transformers with connected rectifier for d.c. welding, typically operating at 400 Hz to 2 kHz; three-phase transformers with connected rectifier for d.c. welding, typically operating at 50 Hz or 60 Hz.
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Section sec_1
Section sec_2
Section sec_3
Section sec_3.1
Section sec_3.2
Section sec_3.3
Section sec_3.4
Section sec_3.5
Section sec_3.6
Section sec_3.7
Section sec_3.8
Section sec_3.9
Section sec_3.10
Section sec_3.11
Section sec_3.12
Section sec_4
Table tab_1
Section sec_5
Section sec_5.1
Section sec_5.2
Section sec_6
Section sec_6.1
Section sec_6.2
Section sec_6.3
Section sec_6.4
Section sec_6.5
Section sec_6.6
Section sec_6.7
Section sec_7
Section sec_7.1
Section sec_7.2
Section sec_7.3
Section sec_8
Section sec_8.1
Section sec_8.2
Table tab_2
Section sec_8.3
Section sec_8.4
Section sec_8.5
Section sec_8.6
Section sec_9
Section sec_9.1
Section sec_9.2
Section sec_9.2.1
Section sec_9.2.2
Table tab_3
Section sec_9.2.3
Table tab_4
Section sec_9.2.4
Section sec_9.3
Section sec_9.3.1
Section sec_9.3.2
Section sec_9.3.3
Section sec_9.3.4
Section sec_9.3.5
Section sec_9.3.6
Section sec_9.4
Section sec_9.4.1
Section sec_9.4.2
Section sec_9.4.3
Section sec_9.4.4
Section sec_9.4.5
Section sec_9.4.6
Section sec_10
Section sec_10.1
Section sec_10.2
Section sec_10.3
Section sec_11
Section sec_11.1
Section sec_11.2
Section sec_12
Section sec_13
Section sec_14
Section sec_15
Section sec_16
Section sec_16.1
Section sec_16.2
Figure fig_1
Section sec_17
Annex sec_A
Figure fig_A.1
Annex sec_B
Annex sec_B.1
Annex sec_B.2
Table tab_B.1
Annex sec_C
Annex sec_C.1
Figure fig_C.1
Annex sec_C.2
Annex sec_C.3
Annex sec_C.3.1
Figure fig_C.2
Annex sec_C.3.2
Annex sec_C.3.3
Annex sec_C.4
Annex sec_D
Reference ref_1
Reference ref_2
Reference ref_3
Reference ref_4
Reference ref_5
Reference ref_6
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Construction, additional equipment
5.1 Thermal protection
5.2 Output current sensing coil
6 Physical environment and operating conditions
6.1 General
6.2 Ambient air temperature
6.3 Humidity
6.4 Altitude
6.5 Transportation and storage
6.6 Provisions for handling
6.7 Cooling liquid temperature
7 Tests
7.1 Test conditions
7.2 Type tests
7.3 Routine tests
8 Protection against electric shock
8.1 Insulation resistance
8.2 Dielectric strength
8.3 Calibration of output current sensing coil
8.4 Protection against electric shock in normal service (direct contact)
8.5 Protection against electric shock in case of fault condition (indirect contact)
8.6 Class II transformer insulation requirements
9 Thermal rating
9.1 General
9.2 Limits of temperature rise
9.3 Heating test conditions
9.4 Methods of temperature measurements
10 Rated output voltage
10.1 General
10.2 a.c. no-load voltage (U20)
10.3 d.c. no-load voltage (U2d)
11 No-load input current (I10)
11.1 General
11.2 Measurement procedure
12 Short-circuit voltage (Ucc)
13 Output current under load condition
14 Cooling liquid circuit
15 Dynamic behaviour
16 Rating plate
16.1 General
16.2 Description
17 Instruction manual
Annex A (informative) Example of a rating plate
Annex B (normative) Corrections for higher altitudes and cooling medium temperatures
Annex C (informative) Notes on physical concepts and comments on some definitions
Annex D (informative) Type code for single-phase transformers for alternating welding current
Bibliography
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Section sec_1
Section sec_2
Section sec_3
Section sec_3.1
Section sec_3.2
Section sec_3.3
Section sec_3.4
Section sec_3.5
Section sec_3.6
Section sec_3.7
Section sec_3.8
Section sec_3.9
Section sec_3.10
Section sec_3.11
Section sec_3.12
Section sec_4
Table tab_1
Section sec_5
Section sec_5.1
Section sec_5.2
Section sec_6
Section sec_6.1
Section sec_6.2
Section sec_6.3
Section sec_6.4
Section sec_6.5
Section sec_6.6
Section sec_6.7
Section sec_7
Section sec_7.1
Section sec_7.2
Section sec_7.3
Section sec_8
Section sec_8.1
Section sec_8.2
Table tab_2
Section sec_8.3
Section sec_8.4
Section sec_8.5
Section sec_8.6
Section sec_9
Section sec_9.1
Section sec_9.2
Section sec_9.2.1
Section sec_9.2.2
Table tab_3
Section sec_9.2.3
Table tab_4
Section sec_9.2.4
Section sec_9.3
Section sec_9.3.1
Section sec_9.3.2
Section sec_9.3.3
Section sec_9.3.4
Section sec_9.3.5
Section sec_9.3.6
Section sec_9.4
Section sec_9.4.1
Section sec_9.4.2
Section sec_9.4.3
Section sec_9.4.4
Section sec_9.4.5
Section sec_9.4.6
Section sec_10
Section sec_10.1
Section sec_10.2
Section sec_10.3
Section sec_11
Section sec_11.1
Section sec_11.2
Section sec_12
Section sec_13
Section sec_14
Section sec_15
Section sec_16
Section sec_16.1
Section sec_16.2
Figure fig_1
Section sec_17
Annex sec_A
Figure fig_A.1
Annex sec_B
Annex sec_B.1
Annex sec_B.2
Table tab_B.1
Annex sec_C
Annex sec_C.1
Figure fig_C.1
Annex sec_C.2
Annex sec_C.3
Annex sec_C.3.1
Figure fig_C.2
Annex sec_C.3.2
Annex sec_C.3.3
Annex sec_C.4
Annex sec_D
Reference ref_1
Reference ref_2
Reference ref_3
Reference ref_4
Reference ref_5
Reference ref_6
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Construction, additional equipment
5.1 Thermal protection
5.2 Output current sensing coil
6 Physical environment and operating conditions
6.1 General
6.2 Ambient air temperature
6.3 Humidity
6.4 Altitude
6.5 Transportation and storage
6.6 Provisions for handling
6.7 Cooling liquid temperature
7 Tests
7.1 Test conditions
7.2 Type tests
7.3 Routine tests
8 Protection against electric shock
8.1 Insulation resistance
8.2 Dielectric strength
8.3 Calibration of output current sensing coil
8.4 Protection against electric shock in normal service (direct contact)
8.5 Protection against electric shock in case of fault condition (indirect contact)
8.6 Class II transformer insulation requirements
9 Thermal rating
9.1 General
9.2 Limits of temperature rise
9.3 Heating test conditions
9.4 Methods of temperature measurements
10 Rated output voltage
10.1 General
10.2 a.c. no-load voltage (U20)
10.3 d.c. no-load voltage (U2d)
11 No-load input current (I10)
11.1 General
11.2 Measurement procedure
12 Short-circuit voltage (Ucc)
13 Output current under load condition
14 Cooling liquid circuit
15 Dynamic behaviour
16 Rating plate
16.1 General
16.2 Description
17 Instruction manual
Annex A (informative) Example of a rating plate
Annex B (normative) Corrections for higher altitudes and cooling medium temperatures
Annex C (informative) Notes on physical concepts and comments on some definitions
Annex D (informative) Type code for single-phase transformers for alternating welding current
Bibliography