GB 4793.2-2001 Particular requirements for hand-held current clamps for safe electrical measurements and tests on electrical equipment for measurement, control and laboratory use
Some standard content:
GB 4793.2—2001
All technical contents of this standard are mandatory. Foreword
This standard is formulated based on IEC 61010-2-032 Particular requirements for hand-held current clamps for electrical measurement and testing, which was formulated by the 66th Technical Committee of the International Electrotechnical Commission. This standard is equivalent to IEC61010-2-032:1994. This standard should be used in conjunction with IEC61010-1. GB 4793.1—1995 has equivalently adopted the 1990 edition of IFC61010-1 and the first amendment in 1991, but did not adopt the second amendment in 1995. In order to ensure the coordination and consistency between the standards, this standard is used in conjunction with IEC 61010-1. The content of IEC 61010-1 can refer to GB 4793.1—1995. The safety standard for electrical equipment for measurement, control and laboratory use consists of two parts. Part 1 is the general requirements, and Part 2 is the special safety requirements for each product.
The part of this standard marked "applicable" indicates that the corresponding provisions in IEC 61010-1 are applicable to this standard; the part of this standard marked "replace" or "modify" is subject to the provisions in this standard; the part of this standard marked "\add" indicates that in addition to complying with the corresponding provisions of IEC61010-1, it must also comply with the provisions added in this standard. This standard was proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the Comprehensive Technical and Economic Research Institute of Instruments and Meters of the Machinery Industry. The drafting unit of this standard: Comprehensive Technical and Economic Research Institute of Instruments and Meters of the Machinery Industry. The main drafter of this standard: Feng Xiaosheng.
GB4793.2 —2001
IEC Foreword
1) The formal resolutions or agreements of the IEC on technical issues, drawn up by the technical committees in which all the national committees with special concerns participate, express as nearly as possible the international consensus on the issues involved. 2) These resolutions or agreements are recommended for international use and are accepted by the national committees in this sense. 3) In order to promote international unification, the LEC hopes that all national committees will adopt the contents of IEC standards as the provisions of their national committees within the scope permitted by their domestic conditions. IEC Any divergence between the recommended standard and the corresponding national standard shall, as far as possible, be clearly stated in the national standard.
This standard has been prepared by Technical Committee IEC/TC66 (Safety of electrical equipment for measurement, control and laboratory use). This standard has the status of a safety publication in accordance with IEC Guide 104. The text of this standard is based on the following documents: DIS
66(CO)52
Voting Report
66(CO)56
Full details of the voting to approve this standard may be found in the voting report shown in the table above. This standard should be used in conjunction with IEC61010-1. IEC61010-1 consists of the first edition in 1990 and the first amendment in 1991. Future versions or revisions of IEC61010-1 are under study. This standard supplements or modifies IFC The corresponding clauses of IEC61010-1 are adapted to become the IEC standard: Particular requirements for material heating equipment for laboratory use. Although some clauses of IEC61010-1 are not restated in this standard, they are still applicable to this standard. Where there is "supplement", "modification" or "replacement" in this standard, the relevant requirements, test requirements or notes in IEC61010-1 shall also apply. In this standard, the following printing fonts are used:
Requirements: Roman;
-Notes: Small Roman;
-Test specifications: Italics:
-Terms used in this standard defined in Chapter 3: Small Roman. National Standard of the People's Republic of China
Safety of electrical equipment for measurement, control and laboratory use - Particular requirements for hand-held
current clamps for electrical measurement and testing
Safety Requirements for electrical equipment for measurement, control and laboratory use Particular requirements for hand-held current chump for electrical measurement and test 1 Scope and purpose
Except as follows, this chapter of IEC 61010-1 is applicable. 1.1 This clause is replaced by the following:
GB 4793. 2—2001
idt IEC 61010-2-032:1994
This standard applies to hand-held and hand-operated current clamps. This type of current clamp measures current without interrupting the current loop of the circuit being measured. The current clamp may be an independent device specified in the scope of JEC 61010-1 or an accessory to other equipment specified in the scope of IEC 61010-1.
This standard does not apply to current transformers or current transmitters for fixed equipment. 1.4 The following content is added to this clause:
Replace the content after the seventh dash with the following content: The transient overvoltage of the primary output circuit complies with the equipment category (overvoltage category)", 1, and INV (see Appendix J). 2 Reference standards
Except for the following content, this chapter of IFC 61010-1 is applicable. The following standards are added:
Hand-held probes for electrical measurement and testing
IEC 61010-2-031:1993
3 Safety requirements for electrical equipment for measurement, control and laboratory use Particular requirements for probes
3 Definitions
Except for the following content, this chapter of IEC61010-1 is applicable. The following content is added to this clause:
3. 101 Current clamps and their parts 3.101.1 Current clamp
A device for measuring current or indicating current waveform without cutting off the current loop of the circuit being measured. 3.101.2 Jaw
The part or group of parts of a current clamp that is used to surround the conductor under test to pick up the magnetic field signal. 3.101.3 Jaw opening
The part or group of parts of a current clamp that is used to open the conductor to place it in the clamp. Approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on November 2, 2001 and implemented on June 1, 2002
CB 4793.2-20D1
Note: Figures 101 and 102 are examples of current clamps and their parts. Figure 101 is an example of a current clamp for accessories of equipment within the scope of application. Figure 102 is an example of a current clamp for equipment within the scope of application. 4 Test
Except for the following, the contents of LEC61010-1 are applicable. 4.4.2.7 This item is replaced by the following:
The output shall be carried out under the condition of open circuit or short circuit (the worst condition shall be selected), and only one output shall be carried out at a time. 5 Marking and Documentation
Except for the following, the contents of IEC61010-1 are applicable. This clause adds the following:
5.1.101 Rated Value
The maximum rated value of the voltage of the non-insulated current conductor to ground to be measured shall be indicated on the current clamp. The type of voltage (acdc, etc.) shall also be indicated, unless both alternating current (effective value) and direct current are applicable. The equipment category (overvoltage category) shall be marked next to the maximum rated voltage to earth by adding CAT.@ next to the voltage value, where @ is represented by the Roman letters 1, Ⅱ, or I to indicate the corresponding equipment category (overvoltage category> (see Appendix J). The maximum allowable current value and current type shall be marked. Compliance is checked by visual inspection.
5.1.2 This clause is modified with the following content: The content after the first dash is replaced by the following: the name or registered trademark of the manufacturer or supplier. The following content is added:
GB 4793- 2—2001
If the current clamp is specially designed for a specific type of equipment, the specific model mark shall be clearly indicated on the current clamp or in the accompanying documents. If this information can only be indicated on the document, the symbol in Table 1 shall be marked on the current clamp. 14.6 Protection against electric shock
In addition to the following content, IEC This chapter of 61010-1 is applicable. 6.1.1 Add the following content to this clause:
Add the following content after the first paragraph:
- Conductive parts located in the jaws that meet the requirements of 6.7 and 13.101. 6.4 Protection under normal conditions
Except as follows, the contents of IEC 61010-1 apply. Add the following:
6.4.101 Parts held or operated by hand
Parts of a current clamp held or operated by hand under normal conditions shall meet the requirements for double insulation or reinforced insulation in Annex D. NOTE: To avoid misunderstanding, this requirement fully meets the requirements of 6.5 of IEC 1010-1 for additional protection under single fault conditions. Compliance is checked by visual inspection and by measuring clearances and creepage distances and by voltage tests in 6.8 and by determining accessible parts in 6.2.
6.7 Electrical clearance and creepage distances
In addition to the following, this chapter of IFC 61010-1 is applicable with the following additions:
6.7.101 Insulation barriers and tactile wires
Insulation barriers shall be installed to form a protective distance to reduce the risk of touching the jaws or the conductor being measured. Or tactile wires shall be used to indicate to the operator a safe touchable boundary.
The electrical clearance and creepage distances between the insulation barriers or tactile wires and hazardous live parts shall meet the requirements for double insulation and reinforced insulation in Appendix D. Figures 103 and 104 give examples of the gap "d\" from the insulation barrier or tactile wire to the clamp or jaws and to the conductor under test. Insulation barrier or tactile wire
a) Without insulation protection
b) With insulation protection
Insulation protection set
Figure 103 When the current clamp is opened and the conductor is in the extreme position, the discontinuity between the insulation and the conductor 7 Protection against mechanical hazards bzxz.net
GB 4793. 2-2001
Figure 104 Minimum limit gap between the insulation barrier and the conductor IEC 61010-1 This chapter of IEC 61010-1 is applicable.
8 Resistance to mechanical shock and collision
This chapter of IFC61010-1 is applicable.
9 Temperature limits of equipment and prevention of the spread of fire This chapter of IEC61010-1 is applicable.
10 Heat resistance
This chapter of IEC61010-1 is applicable.
11 Protection against hazards of fluids
This chapter of IEC61010-1 is applicable.
12 Protection against radiation (including light sources), sound pressure and ultrasonic pressure This chapter of IEC 61010-1 is applicable.
13 Protection against gas release, explosion and implosion
Except as follows, IEC This chapter of IEC 61010-1 is applicable. Add the following content;
13.101 Protection against short circuits
At least basic insulation should be used to prevent short circuits between wires or circuit boards during measurement or clamping. Compliance is checked by visual inspection or by measuring electrical clearances or creepage distances and by voltage measurement in accordance with 6.8. 14 Components
Except for the following content, this chapter of IEC 61010-1 is applicable. Add the following content:
14.101 Input, output signal lines and test leads15
GB 4793.2—2001
Fixed or detachable input and output signal lines and test leads and their accessories shall comply with the requirements of [EC61010-2-031. Compliance is checked in accordance with IEC61010-2-031. Interlock protection
IEC This chapter of IEC61010-1 is applicable.
GB4793.2—2001
Except for the following contents, the appendix contents of IEC61010-1 are applicable. Appendix D
(Appendix of Standardization)
Electrical clearances, contact distances and attenuation of test voltages within equipment and on printed circuit boards
Except for the following contents, the contents of this appendix of IEC61010-1 are applicable. Add the following new tables D101 and D102
Table 101
Basic insulation or supplementary insulation
Pollution degree 2
Working voltage
(effective value or
Working voltage Voltage
effective value or
true current)
CTI>600
CTI>600
Inside the equipment
Material group
CTI>400
Equipment category (overvoltage category)N
High distance
On printed circuit boards
Without paint
CTI>100
CTI>175
With coating
CTI>100
Table D102
Double insulation or reinforced insulation
Pollution degree 2
Equipment category (overvoltage category) I
Fat electric distance
Inside the equipment
Material group
CTI>400
CTI>100
On printed circuit board
Uncoated
CTI>175
Coated
CT>100
Impact peak value
1.2/50μs
Impact peak value
1. 2/50 μs
13 600
Test voltage
RMS value
50/60 Hz
3·250
Test voltage
effective value
50/60Hz
DC or
50/60Hz
DC or
50/6011z
GB 4793. 2—2001
Appendix E
(Annex to the standard)
Guidelines for insulation requirements between specified parts
This appendix of IEC 61010-1 is applicable except for the following contents. Add the following contents:
E101 Protection between two or more circuits having external terminals or accessible parts with hazardous live current (see Figure E101). Accessible parts without protective conductor Hazardous live 1
27777222
Figure E101
Hazardous live 2
The insulation between each circuit and external or accessible parts meets the requirements for hazardous live in E1. The test requirements for X are determined by the worst application of the following conditions: B (basic insulation) - connection of circuits in hazardous live 1 and hazardous live 2, based on the maximum rated working voltage of the insulation between the circuits in accordance with Annex D (standard annex). C (double insulation) - connection of circuits in hazardous live 1, for the purpose of connection, the terminals in hazardous live 2 are accessible, based on the maximum rated working voltage of the insulation of the circuit in hazardous live 1 in accordance with Annex D. D (double insulation)—
Connection of circuits in hazardous live 2, where terminals in hazardous live 1 are accessible for the purpose of connection, based on the highest rated working voltage of the insulation of circuits in hazardous live 2, in accordance with Annex D. Annex J
(Informative Annex)
Insulation arrangements
This annex of IEC 61010-1 applies except as follows. In Part 6, except for the following:
This category is not relevant to this standard.
Replace old Table J1 with the following new Table J1.
3-phase 4-wire
System voltage
66/115
120/20B
120/240
230/400
277/480
400/690
3-phase 3-wire
System voltage
GB4793.2—2001
Phase-to-earth
Impulse withstand voltage value
Preferred series of impulse withstand voltage values for equipment category (overvoltage category) I to V
Appendix M
(Suggestive appendix)
Definition reference
Except the following contents, the contents of the appendices of IEC 61010-1 are applicable. Add the following terms:
Current clamp: 3.101.1
Clamp: 3.101.2
Jaw: 3.101.37 Electrical clearance and creepage distance
In addition to the following content, this chapter of IFC 61010-1 is applicable to the addition of the following content:
6.7.101 Insulation barriers and tactile wires
Insulation barriers should be installed to form a protective distance to reduce the risk of touching the jaws or the conductor being measured. Or a tactile wire should be used to indicate to the operator a safe touchable boundary.
The electrical clearance and creepage distance between the insulation barrier or tactile wire and the hazardous live parts shall meet the requirements of double insulation and reinforced insulation in Appendix D. Figures 103 and 104 give examples of the gap "d\" from the insulation barrier or tactile wire to the clamp or jaws and to the conductor under test. Insulation barrier or tactile wire
a) Without insulation protection
b) With insulation protection
Insulation protection set
Figure 103 When the current clamp is opened and the conductor is in the extreme position, the discontinuity between the insulation and the conductor 7 Protection against mechanical hazards
GB 4793. 2-2001
Figure 104 Minimum limit gap between the insulation barrier and the conductor IEC 61010-1 This chapter of IEC 61010-1 is applicable.
8 Resistance to mechanical shock and collision
This chapter of IFC61010-1 is applicable.
9 Temperature limits of equipment and prevention of the spread of fire This chapter of IEC61010-1 is applicable.
10 Heat resistance
This chapter of IEC61010-1 is applicable.
11 Protection against hazards of fluids
This chapter of IEC61010-1 is applicable.
12 Protection against radiation (including light sources), sound pressure and ultrasonic pressure This chapter of IEC 61010-1 is applicable.
13 Protection against gas release, explosion and implosion
Except as follows, IEC This chapter of IEC 61010-1 is applicable. Add the following content;
13.101 Protection against short circuits
At least basic insulation should be used to prevent short circuits between wires or circuit boards during measurement or clamping. Compliance is checked by visual inspection or by measuring electrical clearances or creepage distances and by voltage measurement in accordance with 6.8. 14 Components
Except for the following content, this chapter of IEC 61010-1 is applicable. Add the following content:
14.101 Input, output signal lines and test leads15
GB 4793.2—2001
Fixed or detachable input and output signal lines and test leads and their accessories shall comply with the requirements of [EC61010-2-031. Compliance is checked in accordance with IEC61010-2-031. Interlock protection
IEC This chapter of IEC61010-1 is applicable.
GB4793.2—2001
Except for the following contents, the appendix contents of IEC61010-1 are applicable. Appendix D
(Appendix of Standardization)
Electrical clearances, contact distances and attenuation of test voltages within equipment and on printed circuit boards
Except for the following contents, the contents of this appendix of IEC61010-1 are applicable. Add the following new tables D101 and D102
Table 101
Basic insulation or supplementary insulation
Pollution degree 2
Working voltage
(effective value or
Working voltage Voltage
effective value or
true current)
CTI>600
CTI>600
Inside the equipment
Material group
CTI>400
Equipment category (overvoltage category)N
High distance
On printed circuit boards
Without paint
CTI>100
CTI>175
With coating
CTI>100
Table D102
Double insulation or reinforced insulation
Pollution degree 2
Equipment category (overvoltage category) I
Electrical distance
Inside the equipment
Material group
CTI>400
CTI>100
On printed circuit board
Uncoated
CTI>175
Coated
CT>100
Impact peak value
1.2/50μs
Impact peak value
1. 2/50 μs
13 600
Test voltage
RMS value
50/60 Hz
3·250
Test voltage
effective value
50/60Hz
DC or
50/60Hz
DC or
50/6011z
GB 4793. 2—2001
Appendix E
(Annex to standard)
Guidelines for insulation requirements between specified parts
This appendix of IEC 61010-1 is applicable except for the following contents. Add the following contents:
E101 Protection between two or more circuits having external terminals or accessible parts with hazardous live current (see Figure E101). Accessible parts without protective conductor Hazardous live 1
27777222
Figure E101
Hazardous live 2
The insulation between each circuit and external or accessible parts meets the requirements for hazardous live in E1. The test requirements for X are determined by the worst application of the following conditions: B (basic insulation) - connection of circuits in hazardous live 1 and hazardous live 2, based on the maximum rated working voltage of the insulation between the circuits in accordance with Annex D (standard annex). C (double insulation) - connection of circuits in hazardous live 1, for the purpose of connection, the terminals in hazardous live 2 are accessible, based on the maximum rated working voltage of the insulation of the circuit in hazardous live 1 in accordance with Annex D. D (double insulation)—
Connection of circuits in hazardous live 2, where terminals in hazardous live 1 are accessible for the purpose of connection, based on the highest rated working voltage of the insulation of circuits in hazardous live 2, in accordance with Annex D. Annex J
(Informative Annex)
Insulation arrangements
This annex of IEC 61010-1 applies except as follows. In Part 6, except for the following:
This category is not relevant to this standard.
Replace old Table J1 with the following new Table J1.
3-phase 4-wire
System voltage
66/115
120/20B
120/240
230/400
277/480
400/690
3-phase 3-wire
System voltage
GB4793.2—2001
Phase-to-earth
Impulse withstand voltage value
Preferred series of impulse withstand voltage values for equipment category (overvoltage category) I to V
Appendix M
(Suggestive appendix)
Definition reference
Except the following contents, the contents of the appendices of IEC 61010-1 are applicable. Add the following terms:
Current clamp: 3.101.1
Clamp: 3.101.2
Jaw: 3.101.37 Electrical clearance and creepage distance
In addition to the following content, this chapter of IFC 61010-1 is applicable to the addition of the following content:
6.7.101 Insulation barriers and tactile wires
Insulation barriers should be installed to form a protective distance to reduce the risk of touching the jaws or the conductor being measured. Or a tactile wire should be used to indicate to the operator a safe touchable boundary.
The electrical clearance and creepage distance between the insulation barrier or tactile wire and the hazardous live parts shall meet the requirements of double insulation and reinforced insulation in Appendix D. Figures 103 and 104 give examples of the gap "d\" from the insulation barrier or tactile wire to the clamp or jaws and to the conductor under test. Insulation barrier or tactile wire
a) Without insulation protection
b) With insulation protection
Insulation protection set
Figure 103 When the current clamp is opened and the conductor is in the extreme position, the discontinuity between the insulation and the conductor 7 Protection against mechanical hazards
GB 4793. 2-2001
Figure 104 Minimum limit gap between the insulation barrier and the conductor IEC 61010-1 This chapter of IEC 61010-1 is applicable.
8 Resistance to mechanical shock and collision
This chapter of IFC61010-1 is applicable.
9 Temperature limits of equipment and prevention of the spread of fire This chapter of IEC61010-1 is applicable.
10 Heat resistance
This chapter of IEC61010-1 is applicable.
11 Protection against hazards of fluids
This chapter of IEC61010-1 is applicable.
12 Protection against radiation (including light sources), sound pressure and ultrasonic pressure This chapter of IEC 61010-1 is applicable.
13 Protection against gas release, explosion and implosion
Except as follows, IEC This chapter of IEC 61010-1 is applicable. Add the following content;
13.101 Protection against short circuits
At least basic insulation should be used to prevent short circuits between wires or circuit boards during measurement or clamping. Compliance is checked by visual inspection or by measuring electrical clearances or creepage distances and by voltage measurement in accordance with 6.8. 14 Components
Except for the following content, this chapter of IEC 61010-1 is applicable. Add the following content:
14.101 Input, output signal lines and test leads15
GB 4793.2—2001
Fixed or detachable input and output signal lines and test leads and their accessories shall comply with the requirements of [EC61010-2-031. Compliance is checked in accordance with IEC61010-2-031. Interlock protection
IEC This chapter of IEC61010-1 is applicable.
GB4793.2—2001
Except for the following contents, the appendix contents of IEC61010-1 are applicable. Appendix D
(Appendix of Standardization)
Electrical clearances, contact distances and attenuation of test voltages within equipment and on printed circuit boards
Except for the following contents, the contents of this appendix of IEC61010-1 are applicable. Add the following new tables D101 and D102
Table 101
Basic insulation or supplementary insulation
Pollution degree 2
Working voltage
(effective value or
Working voltage Voltage
effective value or
true current)
CTI>600
CTI>600
Inside the equipment
Material group
CTI>400
Equipment category (overvoltage category)N
High distance
On printed circuit boards
Without paint
CTI>100
CTI>175
With coating
CTI>100
Table D102
Double insulation or reinforced insulation
Pollution degree 2
Equipment category (overvoltage category) I
Electrical distance
Inside the equipment
Material group
CTI>400
CTI>100
On printed circuit board
Uncoated
CTI>175
Coated
CT>100
Impact peak value
1.2/50μs
Impact peak value
1. 2/50 μs
13 600
Test voltage
RMS value
50/60 Hz
3·250
Test voltage
effective value
50/60Hz
DC or
50/60Hz
DC or
50/6011z
GB 4793. 2—2001
Appendix E
(Annex to the standard)
Guidelines for insulation requirements between specified parts
This appendix of IEC 61010-1 is applicable except for the following contents. Add the following contents:
E101 Protection between two or more circuits having external terminals or accessible parts with hazardous live current (see Figure E101). Accessible parts without protective conductor Hazardous live 1
27777222
Figure E101
Hazardous live 2
The insulation between each circuit and external or accessible parts meets the requirements for hazardous live in E1. The test requirements for X are determined by the worst application of the following conditions: B (basic insulation) - connection of circuits in hazardous live 1 and hazardous live 2, based on the maximum rated working voltage of the insulation between the circuits in accordance with Annex D (standard annex). C (double insulation) - connection of circuits in hazardous live 1, for the purpose of connection, the terminals in hazardous live 2 are accessible, based on the maximum rated working voltage of the insulation of the circuit in hazardous live 1 in accordance with Annex D. D (double insulation)—
Connection of circuits in hazardous live 2, where terminals in hazardous live 1 are accessible for the purpose of connection, based on the highest rated working voltage of the insulation of circuits in hazardous live 2, in accordance with Annex D. Annex J
(Informative Annex)
Insulation arrangements
This annex of IEC 61010-1 applies except as follows. In Part 6, except for the following:
This category is not relevant to this standard.
Replace old Table J1 with the following new Table J1.
3-phase 4-wire
System voltage
66/115
120/20B
120/240
230/400
277/480
400/690
3-phase 3-wire
System voltage
GB4793.2—2001
Phase-to-earth
Impulse withstand voltage value
Preferred series of impulse withstand voltage values for equipment category (overvoltage category) I to V
Appendix M
(Suggestive appendix)
Definition reference
Except the following contents, the contents of the appendices of IEC 61010-1 are applicable. Add the following terms:
Current clamp: 3.101.1
Clamp: 3.101.2
Jaw: 3.101.32—2001
Figure 104 Minimum limiting clearance between insulating barrier and conductor This clause of IEC 61010-1 applies.
8 Resistance to mechanical shock and impact
This clause of IFC61010-1 applies.
9 Temperature limitation of equipment and prevention of the spread of fire This clause of IEC61010-1 applies.
10 Resistance to heat
This clause of IEC61010-1 applies.
11 Protection against hazards of fluids
This clause of IEC61010-1 applies.
12 Protection against radiation (including light sources), sound pressure and ultrasonic pressure This clause of IEC 61010-1 applies.
13 Protection against gas release, explosion and implosion
This clause of IEC 61010-1 applies except as follows. Add the following content;
13.101 Protection against short circuits
At least basic insulation shall be used to prevent short circuits between wires or circuit boards during measurement or when clamping the wires. Compliance shall be checked by visual inspection or by measuring electrical clearances or creepage distances and by voltage measurement in accordance with 6.8. 14 Components
Except as follows, this clause of IEC 61010-1 applies. Add the following content:
14.101 Input and output signal lines and test leads15
GB 4793.2—2001
Fixed or detachable input and output signal lines and test leads and their accessories shall comply with the requirements of [EC61010-2-031. Compliance shall be checked in accordance with IEC61010-2-031. Interlock protection
This clause of IEC 61010-1 applies.
GB4793.2—2001
Except for the following contents, the appendix contents of IEC61010-1 are applicable. Appendix D
(Appendix of Standardization)
Electrical clearances, contact distances and test voltage attenuation specifications within equipment and on printed circuit boards
Except for the following contents, the contents of this appendix of IEC61010-1 are applicable. Add the following new tables D101 and D102
Table 101
Basic insulation or supplementary insulation
Pollution degree 2
Working voltage
(rms value or
Working voltage
rms value or
true current)
CTI>600
CTI>600
In equipment
Material group
CTI> 400
Equipment category (overvoltage category) N
High distance
On printed circuit boards
Without paint
CTI>100
CTI>175
With coating
CTI>100
Table D102
Double insulation or reinforced insulation
Pollution degree 2
Equipment category (overvoltage category) I
Electrical distance
Inside the equipment
Material group
CTI>400
CTI>100
On printed circuit board
Uncoated
CTI>175
Coated
CT>100
Impact peak value
1.2/50μs
Impact peak value
1. 2/50 μs
13 600
Test voltage
RMS value
50/60 Hz
3·250
Test voltage
effective value
50/60Hz
DC or
50/60Hz
DC or
50/6011z
GB 4793. 2—2001
Appendix E
(Annex to the standard)
Guidelines for insulation requirements between specified parts
This appendix of IEC 61010-1 is applicable except for the following contents. Add the following contents:
E101 Protection between two or more circuits having external terminals or accessible parts with hazardous live current (see Figure E101). Accessible parts without protective conductor Hazardous live 1
27777222
Figure E101
Hazardous live 2
The insulation between each circuit and external or accessible parts meets the requirements for hazardous live in E1. The test requirements for X are determined by the worst application of the following conditions: B (basic insulation) - connection of circuits in hazardous live 1 and hazardous live 2, based on the maximum rated working voltage of the insulation between the circuits in accordance with Annex D (standard annex). C (double insulation) - connection of circuits in hazardous live 1, for the purpose of connection, the terminals in hazardous live 2 are accessible, based on the maximum rated working voltage of the insulation of the circuit in hazardous live 1 in accordance with Annex D. D (double insulation)—
Connection of circuits in hazardous live 2, where terminals in hazardous live 1 are accessible for the purpose of connection, based on the highest rated working voltage of the insulation of circuits in hazardous live 2, in accordance with Annex D. Annex J
(Informative Annex)
Insulation arrangements
This annex of IEC 61010-1 applies except as follows. In Part 6, except for the following:
This category is not relevant to this standard.
Replace old Table J1 with the following new Table J1.
3-phase 4-wire
System voltage
66/115
120/20B
120/240
230/400
277/480
400/690
3-phase 3-wire
System voltage
GB4793.2—2001
Phase-to-earth
Impulse withstand voltage value
Preferred series of impulse withstand voltage values for equipment category (overvoltage category) I to V
Appendix M
(Suggestive appendix)
Definition reference
Except the following contents, the contents of the appendices of IEC 61010-1 are applicable. Add the following terms:
Current clamp: 3.101.1
Clamp: 3.101.2
Jaw: 3.101.32—2001
Figure 104 Minimum limiting clearance between insulating barrier and conductor This clause of IEC 61010-1 applies.
8 Resistance to mechanical shock and impact
This clause of IFC61010-1 applies.
9 Temperature limitation of equipment and prevention of the spread of fire This clause of IEC61010-1 applies.
10 Resistance to heat
This clause of IEC61010-1 applies.
11 Protection against hazards of fluids
This clause of IEC61010-1 applies.
12 Protection against radiation (including light sources), sound pressure and ultrasonic pressure This clause of IEC 61010-1 applies.
13 Protection against gas release, explosion and implosion
This clause of IEC 61010-1 applies except as follows. Add the following content;
13.101 Protection against short circuits
At least basic insulation shall be used to prevent short circuits between wires or circuit boards during measurement or when clamping the wires. Compliance shall be checked by visual inspection or by measuring electrical clearances or creepage distances and by voltage measurement in accordance with 6.8. 14 Components
Except as follows, this clause of IEC 61010-1 applies. Add the following content:
14.101 Input and output signal lines and test leads15
GB 4793.2—2001
Fixed or detachable input and output signal lines and test leads and their accessories shall comply with the requirements of [EC61010-2-031. Compliance shall be checked in accordance with IEC61010-2-031. Interlock protection
This clause of IEC 61010-1 applies.
GB4793.2—2001
Except for the following contents, the appendix contents of IEC61010-1 are applicable. Appendix D
(Appendix of Standardization)
Electrical clearances, contact distances and test voltage attenuation specifications within equipment and on printed circuit boards
Except for the following contents, the contents of this appendix of IEC61010-1 are applicable. Add the following new tables D101 and D102
Table 101
Basic insulation or supplementary insulation
Pollution degree 2
Working voltage
(rms value or
Working voltage
rms value or
true current)
CTI>600
CTI>600
In equipment
Material group
CTI> 400
Equipment category (overvoltage category) N
High distance
On printed circuit boards
Without paint
CTI>100
CTI>175
With coating
CTI>100
Table D102
Double insulation or reinforced insulation
Pollution degree 2
Equipment category (overvoltage category) I
Electrical distance
Inside the equipment
Material group
CTI>400
CTI>100
On printed circuit board
Uncoated
CTI>175
Coated
CT>100
Impact peak value
1.2/50μs
Impact peak value
1. 2/50 μs
13 600
Test voltage
RMS value
50/60 Hz
3·250
Test voltage
effective value
50/60Hz
DC or
50/60Hz
DC or
50/6011z
GB 4793. 2—2001
Appendix E
(Annex to the standard)
Guidelines for insulation requirements between specified parts
This appendix of IEC 61010-1 is applicable except for the following contents. Add the following contents:
E101 Protection between two or more circuits having external terminals or accessible parts with hazardous live current (see Figure E101). Accessible parts without protective conductor Hazardous live 1
27777222
Figure E101
Hazardous live 2
The insulation between each circuit and external or accessible parts meets the requirements for hazardous live in E1. The test requirements for X are determined by the worst application of the following conditions: B (basic insulation) - connection of circuits in hazardous live 1 and hazardous live 2, based on the maximum rated working voltage of the insulation between the circuits in accordance with Annex D (standard annex). C (double insulation) - connection of circuits in hazardous live 1, for the purpose of connection, the terminals in hazardous live 2 are accessible, based on the maximum rated working voltage of the insulation of the circuit in hazardous live 1 in accordance with Annex D. D (double insulation)—
Connection of circuits in hazardous live 2, where terminals in hazardous live 1 are accessible for the purpose of connection, based on the highest rated working voltage of the insulation of circuits in hazardous live 2, in accordance with Annex D. Annex J
(Informative Annex)
Insulation arrangements
This annex of IEC 61010-1 applies except as follows. In Part 6, except for the following:
This category is not relevant to this standard.
Replace old Table J1 with the following new Table J1.
3-phase 4-wire
System voltage
66/115
120/20B
120/240
230/400
277/480
400/690
3-phase 3-wire
System voltage
GB4793.2—2001
Phase-to-earth
Impulse withstand voltage value
Preferred series of impulse withstand voltage values for equipment category (overvoltage category) I to V
Appendix M
(Suggestive appendix)
Definition reference
Except the following contents, the contents of the appendices of IEC 61010-1 are applicable. Add the following terms:
Current clamp: 3.101.1
Clamp: 3.101.2
Jaw: 3.101.3The contents of the appendixes of IEC61010-1 are applicable. Appendix D
(Appendix of Standard Recommendation)
Electrical clearances, contact distances and attenuation of test voltages in equipment and on printed circuit boards
Except for the following contents, the contents of this appendix of IEC61010-1 are applicable. Add the following new tables D101 and D102
Table 101
Basic insulation or supplementary insulation
Pollution degree 2
Working voltage
(effective value or
Working voltage
effective value or
true current)
CTI>600
CTI>600
In equipment
Material group
CTI> 400
Equipment category (overvoltage category) N
High distance
On printed circuit boards
Without paint
CTI>100
CTI>175
With coating
CTI>100
Table D102
Double insulation or reinforced insulation
Pollution degree 2
Equipment category (overvoltage category) I
Electrical distance
Inside the equipment
Material group
CTI>400
CTI>100
On printed circuit board
Uncoated
CTI>175
Coated
CT>100
Impact peak value
1.2/50μs
Impact peak value
1. 2/50 μs
13 600
Test voltage
RMS value
50/60 Hz
3·250
Test voltage
effective value
50/60Hz
DC or
50/60Hz
DC or
50/6011z
GB 4793. 2—2001
Appendix E
(Annex to the standard)
Guidelines for insulation requirements between specified parts
This appendix of IEC 61010-1 is applicable except for the following contents. Add the following contents:
E101 Protection between two or more circuits having external terminals or accessible parts with hazardous live current (see Figure E101). Accessible parts without protective conductor Hazardous live 1
27777222
Figure E101
Hazardous live 2
The insulation between each circuit and external or accessible parts meets the requirements for hazardous live in E1. The test requirements for X are determined by the worst application of the following conditions: B (basic insulation) - connection of circuits in hazardous live 1 and hazardous live 2, based on the maximum rated working voltage of the insulation between the circuits in accordance with Annex D (standard annex). C (double insulation) - connection of circuits in hazardous live 1, for the purpose of connection, the terminals in hazardous live 2 are accessible, based on the maximum rated working voltage of the insulation of the circuit in hazardous live 1 in accordance with Annex D. D (double insulation)—
Connection of circuits in hazardous live 2, where terminals in hazardous live 1 are accessible for the purpose of connection, based on the highest rated working voltage of the insulation of circuits in hazardous live 2, in accordance with Annex D. Annex J
(Informative Annex)
Insulation arrangements
This annex of IEC 61010-1 applies except as follows. In Part 6, except for the following:
This category is not relevant to this standard.
Replace old Table J1 with the following new Table J1.
3-phase 4-wire
System voltage
66/115
120/20B
120/240
230/400
277/480
400/690
3-phase 3-wire
System voltage
GB4793.2—2001
Phase-to-earth
Impulse withstand voltage value
Preferred series of impulse withstand voltage values for equipment category (overvoltage category) I to V
Appendix M
(Suggestive appendix)
Definition reference
Except the following contents, the contents of the appendices of IEC 61010-1 are applicable. Add the following terms:
Current clamp: 3.101.1
Clamp: 3.101.2
Jaw: 3.101.3The contents of the appendixes of IEC61010-1 are applicable. Appendix D
(Appendix of Standard Recommendation)
Electrical clearances, contact distances and attenuation of test voltages in equipment and on printed circuit boards
Except for the following contents, the contents of this appendix of IEC61010-1 are applicable. Add the following new tables D101 and D102
Table 101
Basic insulation or supplementary insulation
Pollution degree 2
Working voltage
(effective value or
Working voltage
effective value or
true current)
CTI>600
CTI>600
In equipment
Material group
CTI> 400
Equipment category (overvoltage category) N
High distance
On printed circuit boards
Without paint
CTI>100
CTI>175
With coating
CTI>100
Table D102
Double insulation or reinforced insulation
Pollution degree 2
Equipment category (overvoltage category) I
Electrical distance
Inside the equipment
Material group
CTI>400
CTI>100
On printed circuit board
Uncoated
CTI>175
Coated
CT>100
Impact peak value
1.2/50μs
Impact peak value
1. 2/50 μs
13 600
Test voltage
RMS value
50/60 Hz
3·250
Test voltage
effective value
50/60Hz
DC or
50/60Hz
DC or
50/6011z
GB 4793. 2—2001
Appendix E
(Annex to the standard)
Guidelines for insulation requirements between specified parts
This appendix of IEC 61010-1 is applicable except for the following contents. Add the following contents:
E101 Protection between two or more circuits having external terminals or accessible parts with hazardous live current (see Figure E101). Accessible parts without protective conductor Hazardous live 1
27777222
Figure E101
Hazardous live 2
The insulation between each circuit and external or accessible parts meets the requirements for hazardous live in E1. The test requirements for X are determined by the worst application of the following conditions: B (basic insulation) - connection of circuits in hazardous live 1 and hazardous live 2, based on the maximum rated working voltage of the insulation between the circuits in accordance with Annex D (standard annex). C (double insulation) - connection of circuits in hazardous live 1, for the purpose of connection, the terminals in hazardous live 2 are accessible, based on the maximum rated working voltage of the insulation of the circuit in hazardous live 1 in accordance with Annex D. D (double insulation)—
Connection of circuits in hazardous live 2, where terminals in hazardous live 1 are accessible for the purpose of connection, based on the highest rated working voltage of the insulation of circuits in hazardous live 2, in accordance with Annex D. Annex J
(Informative Annex)
Insulation arrangements
This annex of IEC 61010-1 applies except as follows. In Part 6, except for the following:
This category is not relevant to this standard.
Replace old Table J1 with the following new Table J1.
3-phase 4-wire
System voltage
66/115
120/20B
120/240
230/400
277/480
400/690
3-phase 3-wire
System voltage
GB4793.2—2001
Phase-to-earth
Impulse withstand voltage value
Preferred series of impulse withstand voltage values for equipment category (overvoltage category) I to V
Appendix M
(Suggestive appendix)
Definition reference
Except the following contents, the contents of the appendices of IEC 61010-1 are applicable. Add the following terms:
Current clamp: 3.101.1
Clamp: 3.101.2
Jaw: 3.101.32—2001
Relative
Impulse withstand voltage values
Preferred series of impulse withstand voltage values for equipment categories (overvoltage categories) I to V
Appendix M
(Indicative appendix)
Definition reference
Except as follows, the appendices of IEC 61010-1 are applicable. Add the following terms:
Current clamp: 3.101.1
Clamp: 3.101.2
Jaw: 3.101.32—2001
Relative
Impulse withstand voltage values
Preferred series of impulse withstand voltage values for equipment categories (overvoltage categories) I to V
Appendix M
(Indicative appendix)
Definition reference
Except as follows, the appendices of IEC 61010-1 are applicable. Add the following terms:
Current clamp: 3.101.1
Clamp: 3.101.2
Jaw: 3.101.3
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