JB/T 3336-1983 General technical requirements for automation devices of power station equipment

This standard specifies indoor electrical (including those equipped with electronic devices) power station equipment automation devices. For example, telecontrol devices, patrol detection devices, program control devices, logic control devices, adjustment devices, power conversion devices, etc. All electronic devices and self-contained components or devices, such as integrated circuits, electronic computers, microprocessors, etc., should comply with their respective relevant standards. This standard is the basis for the design, manufacture, use, storage and transportation and the formulation of standards for various other devices. This standard does not apply to power station equipment automation devices that are not power sources. For example, gas source electrification devices, etc. This standard does not apply to sensors that convert non-electrical quantities into electrical quantities. JB/T 3336-1983 General Technical Conditions for Power Station Equipment Automation Devices JB/T3336-1983 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T3336
1983-07-26
JB/T33361983
1.1.1 This standard applies to indoor electrical (including electronic devices) power station equipment automation devices. For example, remote control devices, patrol detection devices, program control devices, logic control devices, adjustment devices, power conversion devices, etc. 1.1.2 All electronic devices and components or devices of white bodies, such as integrated circuits, electronic computers, microprocessors, etc., should comply with their respective relevant standards.
1.1.3 This standard is the basis for the design, manufacture, use, storage and transportation and the formulation of standards for various other devices. 1.2 Scope of non-application
1.2.1 This standard does not apply to power plant equipment automation devices other than power sources. For example, gas source automation devices, etc. 1.2.2 This standard does not apply to sensors that convert non-electrical quantities into electrical quantities. 1.3 Additional provisions
1.3.1 Technical requirements not specified in this standard shall be specified in various device standards as required. 1.3.2 Devices used in special environmental conditions or with special requirements shall be implemented in accordance with relevant standards. They may also be specified in device standards through negotiation between the purchaser and the buyer.
1.3.8 Additional errors in technical indicators caused by changes in ambient temperature shall be specified in device standards. 1.4 See Table 1 for normal operating environmental conditions of the device. Table 1
Atmospheric pressure
Inclination
Ambient temperature, ℃
+ 18 ~ + 27
+ 5 - 40Www.bzxZ.net
+ 5 ~ 1 55
- 5 ~ + 40
25 + 55
68 ~ 106 kPa
Relative grip, %
35 ~75
10 ~ 90
Frequency 10 ~ 150 Hz Single amplitude 0. 0375mm No explosion hazard, no corrosive gas and conductive dust no more than 5”
This standard applies to areas with an altitude not exceeding 2500m. If the environmental conditions exceed the above requirements, the supply and demand parties shall agree.
1983-07-26
Air-conditioned places
Additional and (formed) cooling places
No heating and (or) cooling places
1984-01-01
1.5 Standard atmospheric conditions
1.5.1 Reference atmospheric conditions
20 ℃
Relative humidity
Atmospheric pressure
1.5.2 Normal test atmospheric conditions
15~35℃
Relative humidity
Da Le Fang
45% ~75%
68 ~ 106 kFa
JB/T3336
Measurement: The test temperature of the air-conditioned place is specified in the technical conditions of its device 2 Technical requirements
2.1 AC power supply
2.1.1 Rated frequency 50Hz or 60Hz
2.1.2 Rated voltage 12, 24, 42, 100, 127*, 220, 380V. 2.1.3 Voltage deviation level +1%, ±10%-15%~+10, -20%~+15%. 2.1.4 Frequency deviation level ±0.2%, ±1%, ±5%e2. 1. 5 Harmonic content should be less than 2%, 5 %, 10%, 20%. 2.2 Jitao Power Supply
2.2.1 Rated voltage 1.5, 3, 5, 6, 12, 15, 24, 48, 6D, 110, 220V. Note: DC rated voltage 5V and: 15V are only for integrated circuits. 2.2.2 Voltage deviation level 0.3%, 1%, ±5%, -15% - +10%, 20%~~+15%, -25%~-30% 2.2. The voltage ripple should be less than 0.2%, 1%, 5%, 15%. 2.3 Rated current
1, 1.25, 1.6, 2, 2.5, 3.15, 4, 5, 6.3, 8A. For less than 1A, if it is greater than 8A, multiply the reference value by 10, n is a negative or positive integer.
2.4 Electrical clearance and creepage distance
Electrical clearance and creepage distance shall not be less than the provisions of Table 2. Table 2
Electrical clearance
Rated voltage, V
: (i) A series -
Creep distance
Electrical clearance
Creep distance
Electrical clearance
Electrical clearance
L -LL-A
Creep distance
The environmental conditions are very good, and the impact on insulation is small! The spike and surge voltage are small, and the influence of insulation fault can be ignored. L27 V is only used for mine, thermal instrumentation and machine tool control systems. 2
B series-
C series
JB/T33361983
The environmental conditions are normal, the influence on insulation is small, the spike and surge voltage are normal, and the influence of insulation fault is normal. The environmental conditions are poor, and the influence on insulation is large! The spike and surge voltage is large, and the influence on insulation fault is serious. ②, b represents the creepage distance, which is divided into two levels, a and b. L·L represents the minimum distance between two visible live parts. 1,-1 represents the minimum distance between bare live parts and external conductive parts. When the determined electrical barrier is greater than α or the required distance specified in the column, the creepage distance from the live parts to the required conductive parts should not be less than the electrical barrier. Guidelines for determining creepage distance Appendix A
(4) Clearance and creepage distance do not include the separation distance between the same-pole moving and static contacts of the circuit board and the electrical appliance when they are in the disconnected position. 2.5 Insulation resistance
According to the ambient temperature and relative humidity specified in 1.5.2, under the atmospheric conditions of 2500m (74.8kPa) above sea level, the insulation resistance shall not be less than that specified in Table 3.
Rated voltage, V
30 and below
31 ~380
Mega-effect meter voltage level, V
Insulation resistance, M2
When the altitude of the test area is less than 2500m, the insulation resistance value in Table 3 shall be increased by 1% for every 100° decrease in altitude. 2.6 Insulation Strength
According to the ambient temperature and relative humidity specified in 1.5.2, under the atmospheric conditions of 2500m (74.8kPa) above sea level, the tested part of the device can withstand the insulation strength test of 50Hz AC specified in Table 4 for 1min, without breakdown and flashover. Table 4
Test voltage, V
Rated voltage, V
A series
B series
C series
Insulation strength test, the test voltage specified in Table 4 can also be increased by 10% and the test lasted for 1:1000
When the altitude of the test area is less than 250lm, the test voltage value in Table 4 should be increased by 1% for every 100ml decrease in altitude. When the insulation strength test is repeated, the test voltage value should be 75% of the previous one. 2.T Power supply influence
2.7.1 AC power supply influence
JB/T33361983
According to the normal test atmospheric conditions specified in 1, 5.2, when the AC voltage, frequency, harmonic content, each of which changes according to the selected limit (change one of them, the rest are rated values), the device should work reliably, and the performance and parameters should meet the requirements of its technical conditions. 2.7.2 DC power supply influence
According to the normal test atmospheric conditions specified in 1.5.2, when the DC voltage and voltage ripple, each of which changes according to the selected limit value (change one of them, the rest are rated values), the device should work reliably, and the performance and parameters should meet the requirements of its technical conditions. 2.8 High-frequency interference
2.8.t Requirements
Under the atmospheric conditions specified in 1.5.2, the device is in normal working state, and the specified high-frequency signal is applied. The device should not malfunction, the device components are not damaged, and the device performance meets the requirements of its technical conditions. 2.8.2 Characteristics and parameters of the interference signal
wave, attenuated oscillation wave, its envelope decays to 50% of the peak value after three to six cycles. Frequency, 1→0.1MHx
Power supply impedance: 200Ω 20.
Repetition rate: The repetition rate of the interference signal added to the device is 400 times/second. Test time, 29-2s, if the minimum setting value of the device time is greater than 25, the test time is extended to be greater than this minimum value. Test voltage classification: test voltage × no-load voltage of the interference signal generator, deviation -10%~0. The voltage level is stipulated as follows: Class I 0V
Class I longitudinal mode 1k (first half wave value)
Transverse mode 0.5kV (first half wave peak value)
Longitudinal mode 2.5kV (first half wave peak value)
Transverse mode 1k (first half wave peak value)
Test classification principle +
Class I devices are not exposed to interference tests.
勇. The power supply circuit of the device is connected to a dedicated power supply, the lead is short, and no other operating circuit is connected to the power supply circuit. b. The input circuit of the device is not directly connected to the current transformer or voltage transformer, or the lead wire is well shielded and grounded. c. The output circuit is connected to the load with a short wire. Sub-level
a. The power circuit of the device is connected to the battery in the station. Due to the long lead wire, the longitudinal mode interference voltage can be generated. The transverse mode interference voltage in the power line can be caused by other operating circuits connected to the same battery power supply. b. The input circuit of the device is connected to the current transformer or the positive transformer or the lead wire is long, and no effective shielding and grounding are taken. C. Due to the long connection line from the output circuit to the load, a high longitudinal mode interference voltage can appear at the output terminal. The input circuit, power circuit and output circuit of a device can have different test voltage levels. 2.9 Low temperature
According to the ambient temperature category selected in Table 1, at its lower limit temperature, the temperature error is ±3 degrees, which lasts for 16 hours. The device should work normally, and the main parameters and performance meet its technical requirements. Parts requirements, no mechanical damage. 2.10 High temperature
According to the ambient temperature category selected in Table 1, at its highest limit temperature, the temperature error is +3℃, which lasts for 16 hours, the cover should work normally, the main parameters and performance meet the requirements of its technical conditions, and there is no mechanical damage. 2.11 Vibration
Under the normal test atmospheric conditions specified in 1.5.2, the device should withstand a frequency of 10~150Hz, a deviation of ±2%, a single amplitude of 0.075mm, a deviation of +15%, and two vertical directions (in the same plane), each lasting 2 hours of vibration without malfunction. The main parameters and performance meet the requirements of its technical conditions. After the move, the device structure and components are not loose or damaged. 2. 12 Impact
JB/T33361983
The technical requirements for impact shall be specified in the standards of the respective devices. 2.13 Power consumption
The power consumed by the device at rated voltage and rated load shall be specified in the technical conditions of the respective devices. The unit is expressed in W for DC and VA for AC.
2.14 Continuous operation
Under the ambient temperature and relative humidity conditions specified in 1.5.2, the device applies rated electrical parameters and loads and runs continuously for 120 hours, and should work reliably. All parameters and performances shall meet the requirements of its technical conditions. 2.15 Appearance requirements
2.15,1 The overall dimensions and installation dimensions shall comply with the requirements of the device drawings. 2.15.2 The fastening of parts, the pressing and assembly of components, and the numbering of terminal blocks shall comply with the requirements of the drawings. 2.15.3 Parts and shells shall not have rust, corrosion, cracks or obvious scratches. The coating should not fall off. 2.15.4 The metal shell or base of the device to be grounded should have a grounding terminal or grounding screw, and should have an obvious grounding mark. 2.15.5 The quality of the printed circuit board and nameplate should meet the relevant standards. 2.16 Dynamic characteristics simulation
If necessary, it shall be specified in the technical conditions of the device itself. 2.17 On-site trial operation
If necessary, it shall be specified in the technical conditions of the device itself. 3 Test methods
3.1 Appearance inspection
Check whether the electrical clearance and creepage distance between adjacent conductive parts meet the requirements according to the provisions of 2.4. Check whether the appearance meets the requirements according to 2.15. 8.2 Insulation resistance test
According to the provisions of 2.5, test each circuit without electrical connection, and each circuit and the shell or grounded parts. Before testing, the grounded or shell-connected parts or circuits should be disconnected. After testing, reconnect them in place. 3.3 Dielectric Strength Test
According to the provisions of 2.6, conduct dielectric strength test between each circuit without electrical connection; between each circuit and the shell or grounded metal parts. The initial value of the test voltage shall not be higher than 50% of the specified value. Then gradually increase to the specified value within 55 and maintain 1Ⅱin, and then quickly and smoothly drop to the specified value before power off.
Before the test, the components or circuits connected to the ground or shell should be disconnected. Reconnect them in place at the start of the test. 3.4 Power Supply Influence Test
Perform according to the requirements of 2.7.1 and 2.7.2.
3.5 High-frequency Interference Test
See Figure 1 for the circuit diagram of the interference signal generator. The power circuit of the device under test should be rated. Each test lead should not be longer than 2m.
Interference signal application position:
a. Apply between each group of input or output terminals of the device and the ground (longitudinal mode), see Figure 2. h. Apply between the terminals of each independent circuit of the device (longitudinal mode), see Figure 2. c. Apply between the terminals of a circuit of the device (transverse mode), see Figure 3. Note: Item (1) does not apply to contact circuits. However, it must be done for semiconductor output circuits. When the input, power supply and output circuits of the same device belong to the same voltage level, the quality test c is carried out according to the specified circuit voltage level. For the tests of items a and b, the highest voltage level is tested in reverse. 5
Fagong Group
zuo Hz
JB/T3336
0.5kV 1MI[1
2.uIV IMHe
L = 26fF Cr = 20μF+ L: = 6.3mH, Cs =4μC, = 80 p K = 2Qt R, = HHs2, R, =50ns-R, =333.3?, R,-1000Q; R 250S2 Figure 1 Interference Generator Circuit
Note: T high frequency filter R2, C2 are determined by test. ② As shown in the figure, the device is connected in the loop to check the output parameters, and the test is attached to disconnect it from the reverse circuit for installation. Install
car||ice generator
(between loops)
to ten disruptors
(between loops and ground
L=1~5mHtC=0.5μF
Figure 2 Interference test circuit (longitudinal mode)
3.6 Low temperature test
JB/T33361983
to disruptor
L=1-5mH: C-0.5uF
Figure 3 Interference test circuit (transverse mode)
The temperature deviation of the low temperature box is ±3℃, and the minimum distance between each surface of the device and the corresponding internal peak is not less than 15mm The device is ready for use, but not powered on. Place the device with the test room temperature in a low temperature box according to the actual working installation method (the low temperature is the same as the temperature of the test room). Adjust the temperature of the low temperature box to the specified temperature value (the cooling rate shall not exceed 1℃/min), start timing after the temperature of the low temperature box is stable, and keep warm for 16 hours. 2 hours before the end of the test, in the specified low temperature state, apply the rated electrical parameters and loads specified in the technical conditions to the device to check whether the device can work properly at low temperature, and test the performance and parameters specified in the technical conditions of the device. At the end of the test, first turn off the power to the device, and then restore the temperature in the box to the test room temperature (the temperature rise rate shall not exceed 1℃:/min). After the temperature reaches stability, take the device out of the box for appearance inspection. 3.7 High temperature test
The temperature deviation of the high temperature box is =3C, and the absolute humidity in the box is no more than 20g of water per cubic meter of air! (The relative humidity is about 50%. 35℃).
The device is ready for use, but not powered on. Place the device with laboratory temperature in a high-temperature box according to the following installation method (the temperature inside the box is the same as the temperature in the laboratory). Gradually adjust the temperature inside the box to reach the specified high temperature value (the heating rate shall not exceed 1C/min). Start timing after the temperature inside the box reaches stability. At the same time, apply the rated power parameters and loads specified in the technical conditions to the device to check whether the device can work normally. Keep warm for 16 hours. 2 hours before the end of the test, test the temperature rise and performance of the heating devices and components of the device under the specified high temperature state. When the test time ends, first turn off the power to the device, and then restore the temperature inside the box to the laboratory temperature (the cooling rate shall not exceed 1℃/min). After the temperature stabilizes, take the device out of the box for appearance inspection. 3.a Vibration test
The device is installed on the vibration table according to the actual working installation method. If the device is not equipped with vibration protection, it shall be tested together with the vibration protection facilities. The device is given rated electrical parameters and loads, and the vibration test is carried out according to the parameters specified in 2.11. 3.8.1 Initial resonance check: Scan within the frequency range. The scan should be continuous logarithmic, with a scanning speed of about 1 octave per minute, and scan 3 times in total. If there is a peak, the frequency and amplitude at this time should be recorded. 3.8.2 Frequency scanning: After the initial resonance check, if there is a peak, repeat the above test for 2 hours at a scanning speed of 1 octave per minute to test the vibration resistance of the device.
3.8.3 Final inspection: If there is resonance that causes the device to malfunction or the device performance and parameters exceed its technical requirements, take measures to solve it. Then repeat the test in 3.8.2 until the requirements are met. After the vibration test, check whether the structure and components are loose or damaged. 8.9 Impact test
Carry out according to the standard of each device. 3.10 Power consumption test
JB/T33361983
Apply rated electrical parameters and load to the device, and measure at the input end of the device using the volt-ampere method. 3.11 Continuous operation test
Carry out according to the requirements of 2.14. If a fault occurs during the test, the test will be re-timed after the fault is eliminated. 3.12 Dynamic characteristics simulation test
Carry out according to the technical requirements agreed upon by both parties. 3.13 On-site trial operation test
Carry out according to the technical requirements agreed upon by both parties. 4 Inspection rules
4.1 Test
Return to the manufacturing! Technical inspection department to conduct or with the participation of the ordering party). According to the order of items specified in Table 5, all submitted devices shall be tested one by one. The qualified products shall be in accordance with the technical requirements and shall be accompanied by the certificate of qualification. Table 5 Test items Continuous resistance Dielectric strength Power supply influence High frequency interference Efficiency consumption Continuous operation Dynamic simulation On-site trial operation Factory test Note: The test is conducted by marking ○. 4.2 Type test Type test Final test Technical requirements According to this standard 2:15 Test method According to this standard The test shall be conducted by the technical inspection department of the manufacturer in the order of items specified in Table 5. Test cycle: Once every two years for large-scale production devices (100 units or more per year). Once every three years for small-scale production devices. If the design, process, materials, and components are changed and may affect the performance, type tests are also required after the changes. Test sampling: For devices produced in large quantities, 3 units are randomly selected from the same model devices that have passed the factory test, and 1 to 3 units are randomly selected from devices produced in small quantities for type tests. All units that meet the technical requirements are qualified. If there is one unit that does not meet the requirements, the sampling quantity is doubled and the unqualified items are retested. If all units meet the requirements, they are qualified. If there is still one unit that does not meet the requirements, the batch is unqualified. After reorganization, the type test is re-performed according to all the above type test items and processes. 4.3 Finalization test
The appraisal committee is responsible for conducting finalization tests according to all the items, technical requirements and test methods specified in Table 5. Only after passing the appraisal test can it be put into production.
Whether dynamic characteristics simulation tests and on-site trial runs are carried out in the finalization test shall be carried out according to the specific technical requirements agreed upon by the supply and demand parties. 8
5 Marking, packaging, transportation and storage
5.1 Marking
5.1.1 The following obvious markings shall be on the device nameplate a. Device name and model.
Manufacturer name and trademark.
Year and month of production and serial number.
5.1,2 Markings on the outer packaging box
Device name, model and total number.
Manufacturer name.
JB/T33361983
Year and month of factory.
d. Relevant markings in accordance with GB191-73 "Packaging, storage and transportation indications". 5.2 Packaging
The device shall have inner and outer packaging boxes, dust and shockproof measures, hoisting facilities and markings. If there are special requirements, they shall be stated in the technical conditions of the device.
5.3 Transportation
The device is suitable for sea, land and air transportation. During transportation and loading and unloading, follow the markings on the packaging box and relevant rules. 5.4 Storage
5.4.1 Warehouse conditions
The ambient temperature is -5~+40, the relative humidity is not more than 90%, and there is no acid, alkali, salt and corrosive and explosive gas indoors. It is not affected by dust, rain and snow.
5.↓,2. Warranty period
From the time of shipment, transportation, storage and use, within two years, if the device fails to meet the technical requirements or is damaged due to manufacturing and packaging quality problems, the manufacturer is responsible for repair. If it is not repaired, the manufacturer is responsible for replacement. 6
Supply completeness
The device is supplied with:
Product certificate, product certificate
Conditions, accessories
Instruction manual, schematic diagram and installation wiring diagram. 9
A.1 Relative leakage index of insulating materials See Table A1 Relative creepage index of insulating materials
120 174
175 ~ 400
More than 400
JB/T33361983
Guidelines for determining creepage distance
(Supplement)
Minimum creepage distance for a creepage distance span without reinforcement
Note: Relative creepage index of insulating materials indicates the insulation performance of the material. The larger the index, the better the insulation performance. With reinforcement
Drop 50 drops of electrolyte on the surface of the insulating material, with 30s between each drop, and install the surface of the material dripping electrolyte. Two electrodes, with a distance of 4mm between the electrodes, are used to apply a test voltage between the two electrodes. The voltage value when the insulating material breaks down is called the relative leakage index. (For the test method, see [EC112 publication third edition, 1979)
A.2 Guidelines for determining creepage distance
For grooves with a width or depth equal to or greater than 1mm, measure along their circumference. For grooves smaller than the above size or prone to dust accumulation, only measure their direct distance.
For grooves with a height less than 1mm, ignore them. When the height of the rib is equal to or greater than 1mm, if the rib and the insulating part are integral (for example, formed by die casting or welding), measure along their circumference. If the rib and the insulating part are not integral, measure along the shorter of the two paths, that is, the length of the joint or the side of the rib. A.3 Legend for determining creepage distance
Figures A1, A2, and A3 indicate whether the groove is included in the creepage distance. Figures A4 and A5 indicate whether the rib is included in the creepage distance or not. Figure A6 shows the considerations for the joint when a rib is formed by inserting an insulating part and the protruding side of the rib is longer than the length of the side of the inserted part.
Figures A7, A8, A9, and A10 illustrate how to determine the creepage distance when there is a fastener in the groove of the insulating part. Figure A1
Additional notes:
JB/T3336
A-Insulator, (-Conductive part, F-Creep distance This standard was proposed and approved by the Acheng Power Station Equipment Automation Design Institute of the Ministry of Machinery Industry. This standard was drafted by the Acheng Power Station Equipment Automation Design Institute. The main drafter of this standard was Hu Jinghe.
Figure A101 Delivery: Test
Return to manufacturing! Technical inspection department or with the participation of the ordering party). According to the order of items specified in Table 5, all submitted devices are tested one by one. Those that meet the technical requirements are qualified products and are accompanied by a certificate of qualification. Table 5
Test items
Continuous resistance
Insulation strength
Power supply influence
High frequency interference
Efficiency consumption
Continuous operation
Dynamic simulation
On-site trial operation
Factory test
Note: Those marked with ○ are tested.
4.2 Type test
Type test
Type test
Technical requirements are in accordance with this standard
Test method is in accordance with this standard
The test is carried out by the technical inspection department of the manufacturer in the order of items specified in Table 5. Test cycle: Once every two years for devices produced in large quantities (100 units or more per year). Once every three years for devices produced in small quantities. If there are changes in design, process, materials, and components that may affect performance, type tests are also required after the changes. Test sampling: For devices produced in large quantities, 3 units of the same model that have passed the factory test are randomly selected, and 1 to 3 units of devices produced in small quantities are randomly selected for type testing. All units that meet the technical requirements are qualified. If there is one unit that does not meet the requirements, the sampling quantity is doubled and the unqualified items are retested. If all units meet the requirements, they are qualified. If there is still one unit that does not meet the requirements, the batch is unqualified. After reorganization, the type test shall be conducted again according to all the above type test items and processes. 4.3 Type test
According to all the items, technical requirements and test methods specified in Table 5, the appraisal committee shall be responsible for conducting the type test. Only after the appraisal test is qualified can it be put into production.
Whether to conduct dynamic characteristic simulation test and on-site trial operation in the type test shall be carried out according to the specific technical requirements agreed upon by the supply and demand parties. 8
5 Marking, packaging, transportation and storage
5.1 Marking
5.1.1 The following obvious markings shall be on the device nameplate a. Device name and model.
Manufacturer name and trademark.
Year and month of production and serial number.
5.1,2 Marking on the outer packaging box
Device name, model and total.
Manufacturer name.
JB/T33361983
Factory year and month.
d. Conform to the relevant signs of GB191-73 "Packaging, Storage and Transportation Indicators". 5.2 Packaging
The device should have inner and outer packaging boxes, dustproof and shockproof measures, lifting facilities and signs. If there are special requirements, they will be stated in the technical conditions of the device.
5.3 Transportation
The device is suitable for sea, land and air transportation. During transportation and loading and unloading, follow the marks on the packaging box and relevant rules. 5.4 Storage
5.4.1 Warehouse conditions
The ambient temperature is -5 to +40, the relative humidity is not more than 90%, and there is no acid, alkali, salt and corrosive and explosive gas indoors. It is not affected by dust, rain or snow.
5. ↓,2. Warranty period
From the date of shipment, transportation, storage and use, within two years, if the equipment fails to meet the technical requirements or is damaged due to manufacturing or packaging quality problems, the manufacturer shall be responsible for repair. If it cannot be repaired, the manufacturer shall be responsible for replacement. 6
Supply completeness
The equipment supplied with the following includes:
Product certificate, product certificate
Terms and conditions, accessories
Operation manual, schematic diagram and installation wiring diagram. 9
A.1 Relative leakage index of insulating materials See Table A1 Relative leakage index of insulating materials
120 174
175 ~ 400
More than 400
JB/T33361983
Guidelines for determining creepage distance
(Supplement)
Minimum creepage distance of a creepage span without reinforcement
Note: The relative creepage index of the insulating material is the insulation performance of the material. The larger the index, the better the insulation performance. With reinforcement
Drop 50 drops of electrolyte on the surface of the insulating material, with 30s between each drop, and install on the surface of the dripping electrolyte material Two electrodes, with a distance of 4mm between the electrodes, are used to apply a test voltage between the two electrodes. The voltage value when the insulating material breaks down is called the relative leakage index. (For the test method, see [EC112 publication third edition, 1979)
A.2 Guidelines for determining creepage distance
For grooves with a width or depth equal to or greater than 1mm, measure along their circumference. For grooves smaller than the above size or prone to dust accumulation, only measure their direct distance.
For grooves with a height less than 1mm, ignore them. When the height of the rib is equal to or greater than 1mm, if the rib and the insulating part are integral (for example, formed by die casting or welding), measure along their circumference. If the rib and the insulating part are not integral, measure along the shorter of the two paths, that is, the length of the joint or the side of the rib. A.3 Legend for determining creepage distance
Figures A1, A2, and A3 indicate whether the groove is included in the creepage distance. Figures A4 and A5 indicate whether the rib is included in the creepage distance or not. Figure A6 shows the considerations for the joint when a rib is formed by inserting an insulating part and the protruding side of the rib is longer than the length of the side of the inserted part.
Figures A7, A8, A9, and A10 illustrate how to determine the creepage distance when there is a fastener in the groove of the insulating part. Figure A1
Additional notes:
JB/T3336
A-Insulator, (-Conductive part, F-Creep distance This standard was proposed and approved by the Acheng Power Station Equipment Automation Design Institute of the Ministry of Machinery Industry. This standard was drafted by the Acheng Power Station Equipment Automation Design Institute. The main drafter of this standard was Hu Jinghe.
Figure A101 Delivery: Test
Return to manufacturing! Technical inspection department or with the participation of the ordering party). According to the order of items specified in Table 5, all submitted devices are tested one by one. Those that meet the technical requirements are qualified products and are accompanied by a certificate of qualification. Table 5
Test items
Continuous resistance
Insulation strength
Power supply influence
High frequency interference
Efficiency consumption
Continuous operation
Dynamic simulation
On-site trial operation
Factory test
Note: Those marked with ○ are tested.
4.2 Type test
Type test
Type test
Technical requirements are in accordance with this standard
Test method is in accordance with this standard
The test is carried out by the technical inspection department of the manufacturer in the order of items specified in Table 5. Test cycle: Once every two years for devices produced in large quantities (100 units or more per year). Once every three years for devices produced in small quantities. If there are changes in design, process, materials, and components that may affect performance, type tests are also required after the changes. Test sampling: For devices produced in large quantities, 3 units of the same model that have passed the factory test are randomly selected, and 1 to 3 units of devices produced in small quantities are randomly selected for type testing. All units that meet the technical requirements are qualified. If there is one unit that does not meet the requirements, the sampling quantity is doubled and the unqualified items are retested. If all units meet the requirements, they are qualified. If there is still one unit that does not meet the requirements, the batch is unqualified. After reorganization, the type test shall be conducted again according to all the above type test items and processes. 4.3 Type test
According to all the items, technical requirements and test methods specified in Table 5, the appraisal committee shall be responsible for conducting the type test. Only after the appraisal test is qualified can it be put into production.
Whether to conduct dynamic characteristic simulation test and on-site trial operation in the type test shall be carried out according to the specific technical requirements agreed upon by the supply and demand parties. 8
5 Marking, packaging, transportation and storage
5.1 Marking
5.1.1 The following obvious markings shall be on the device nameplate a. Device name and model.
Manufacturer name and trademark.
Year and month of production and serial number.
5.1,2 Marking on the outer packaging box
Device name, model and total.
Manufacturer name.
JB/T33361983
Factory year and month.
d. Conform to the relevant signs of GB191-73 "Packaging, Storage and Transportation Indicators". 5.2 Packaging
The device should have inner and outer packaging boxes, dustproof and shockproof measures, lifting facilities and signs. If there are special requirements, they will be stated in the technical conditions of the device.
5.3 Transportation
The device is suitable for sea, land and air transportation. During transportation and loading and unloading, follow the marks on the packaging box and relevant rules. 5.4 Storage
5.4.1 Warehouse conditions
The ambient temperature is -5 to +40, the relative humidity is not more than 90%, and there is no acid, alkali, salt and corrosive and explosive gas indoors. It is not affected by dust, rain or snow.
5. ↓,2. Warranty period
From the date of shipment, transportation, storage and use, within two years, if the equipment fails to meet the technical requirements or is damaged due to manufacturing or packaging quality problems, the manufacturer shall be responsible for repair. If it cannot be repaired, the manufacturer shall be responsible for replacement. 6
Supply completeness
The equipment supplied with the following includes:
Product certificate, product certificate
Terms and conditions, accessories
Operation manual, schematic diagram and installation wiring diagram. 9
A.1 Relative leakage index of insulating materials See Table A1 Relative leakage index of insulating materials
120 174
175 ~ 400
More than 400
JB/T33361983
Guidelines for determining creepage distance
(Supplement)
Minimum creepage distance of a creepage span without reinforcement
Note: The relative creepage index of the insulating material is the insulation performance of the material. The larger the index, the better the insulation performance. With reinforcement
Drop 50 drops of electrolyte on the surface of the insulating material, with 30s between each drop, and install on the surface of the dripping electrolyte material Two electrodes, with a distance of 4mm between the electrodes, are used to apply a test voltage between the two electrodes. The voltage value when the insulating material breaks down is called the relative leakage index. (For the test method, see [EC112 publication third edition, 1979)
A.2 Guidelines for determining creepage distance
For grooves with a width or depth equal to or greater than 1mm, measure along their circumference. For grooves smaller than the above size or prone to dust accumulation, only measure their direct distance.
For grooves with a height less than 1mm, ignore them. When the height of the rib is equal to or greater than 1mm, if the rib and the insulating part are integral (for example, formed by die casting or welding), measure along their circumference. If the rib and the insulating part are not integral, measure along the shorter of the two paths, that is, the length of the joint or the side of the rib. A.3 Legend for determining creepage distance
Figures A1, A2, and A3 indicate whether the groove is included in the creepage distance. Figures A4 and A5 indicate whether the rib is included in the creepage distance or not. Figure A6 shows the considerations for the joint when a rib is formed by inserting an insulating part and the protruding side of the rib is longer than the length of the side of the inserted part.
Figures A7, A8, A9, and A10 illustrate how to determine the creepage distance when there is a fastener in the groove of the insulating part. Figure A1
Additional notes:
JB/T3336
A-Insulator, (-Conductive part, F-Creep distance This standard was proposed and approved by the Acheng Power Station Equipment Automation Design Institute of the Ministry of Machinery Industry. This standard was drafted by the Acheng Power Station Equipment Automation Design Institute. The main drafter of this standard was Hu Jinghe.
Figure A101 Warehouse conditions
The ambient temperature is -5 ~ +40, the relative humidity is not more than 90%, and there is no acid, alkali, salt and corrosive and explosive gas in the room. It is not affected by dust, rain and snow.
5. ↓, 2. Warranty period
From the time of delivery, transportation, storage and use, within two years, if the equipment fails to meet the technical requirements or is damaged due to manufacturing and packaging quality problems, the manufacturer is responsible for repair. If it is not repaired, the manufacturer is responsible for replacement. 6
Supply completeness
The equipment is supplied with:
Product certificate, product certificate
Conditions, accessories
Instruction manual, schematic diagram and installation wiring diagram. 9
A.1 Relative leakage index of insulating materials See Table A1 Relative temperature index of insulating materials
120 174
175 ~ 400
More than 400
JB/T33361983
Guidelines for determining creepage distance
(Supplement)
Minimum creepage distance of a creepage span without reinforcement
Note: The relative creepage index of the insulating material is the insulation performance of the material. The larger the index, the better the insulation performance. With reinforcement
Drop 50 drops of electrolyte on the surface of the insulating material, with 30s between each drop, and install on the surface of the dripping electrolyte material Two electrodes, with a distance of 4mm between the electrodes, are used to apply a test voltage between the two electrodes. The voltage value when the insulating material breaks down is called the relative leakage index. (For the test method, see [EC112 publication third edition, 1979)
A.2 Guidelines for determining creepage distance
For grooves with a width or depth equal to or greater than 1mm, measure along their circumference. For grooves smaller than the above size or prone to dust accumulation, only measure their direct distance.
For grooves with a height less than 1mm, ignore them. When the height of the rib is equal to or greater than 1mm, if the rib and the insulating part are integral (for example, formed by die casting or welding), measure along their circumference. If the rib and the insulating part are not integral, measure along the shorter of the two paths, that is, the length of the joint or the side of the rib. A.3 Legend for determining creepage distance
Figures A1, A2, and A3 indicate whether the groove is included in the creepage distance. Figures A4 and A5 indicate whether the rib is included in the creepage distance or not. Figure A6 shows the considerations for the joint when a rib is formed by inserting an insulating part and the protruding side of the rib is longer than the length of the side of the inserted part.
Figures A7, A8, A9, and A10 illustrate how to determine the creepage distance when there is a fastener in the groove of the insulating part. Figure A1
Additional notes:
JB/T3336
A-Insulator, (-Conductive part, F-Creep distance This standard was proposed and approved by the Acheng Power Station Equipment Automation Design Institute of the Ministry of Machinery Industry. This standard was drafted by the Acheng Power Station Equipment Automation Design Institute. The main drafter of this standard was Hu Jinghe.
Figure A101 Warehouse conditions
The ambient temperature is -5 ~ +40, the relative humidity is not more than 90%, and there is no acid, alkali, salt and corrosive and explosive gas in the room. It is not affected by dust, rain and snow.
5. ↓, 2. Warranty period
From the time of delivery, transportation, storage and use, within two years, if the equipment fails to meet the technical requirements or is damaged due to manufacturing and packaging quality problems, the manufacturer is responsible for repair. If it is not repaired, the manufacturer is responsible for replacement. 6
Supply completeness
The equipment is supplied with:
Product certificate, product certificate
Conditions, accessories
Instruction manual, schematic diagram and installation wiring diagram. 9
A.1 Relative leakage index of insulating materials See Table A1 Relative temperature index of insulating materials
120 174
175 ~ 400
More than 400
JB/T33361983
Guidelines for determining creepage distance
(Supplement)
Minimum creepage distance of a creepage span without reinforcement
Note: The relative creepage index of the insulating material is the insulation performance of the material. The larger the index, the better the insulation performance. With reinforcement
Drop 50 drops of electrolyte on the surface of the insulating material, with 30s between each drop, and install on the surface of the dripping electrolyte material Two electrodes, with a distance of 4mm between the electrodes, are used to apply a test voltage between the two electrodes. The voltage value when the insulating material breaks down is called the relative leakage index. (For the test method, see [EC112 publication third edition, 1979)
A.2 Guidelines for determining creepage distance
For grooves with a width or depth equal to or greater than 1mm, measure along their circumference. For grooves smaller than the above size or prone to dust accumulation, only measure their direct distance.
For grooves with a height less than 1mm, ignore them. When the height of the rib is equal to or greater than 1mm, if the rib and the insulating part are integral (for example, formed by die casting or welding), measure along their circumference. If the rib and the insulating part are not integral, measure along the shorter of the two paths, that is, the length of the joint or the side of the rib. A.3 Legend for determining creepage distance
Figures A1, A2, and A3 indicate whether the groove is included in the creepage distance. Figures A4 and A5 indicate whether the rib is included in the creepage distance or not. Figure A6 shows the considerations for the joint when a rib is formed by inserting an insulating part and the protruding side of the rib is longer than the length of the side of the inserted part.
Figures A7, A8, A9, and A10 illustrate how to determine the creepage distance when there is a fastener in the groove of the insulating part. Figure A1
Additional notes:
JB/T3336
A-Insulator, (-Conductive part, F-Creep distance This standard was proposed and approved by the Acheng Power Station Equipment Automation Design Institute of the Ministry of Machinery Industry. This standard was drafted by the Acheng Power Station Equipment Automation Design Institute. The main drafter of this standard was Hu Jinghe.
Figure A10
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