JB/T 7064-1993 General technical requirements for semiconductor inverters
Some standard content:
The standard of the People's Republic of China for high-pressure machinery industry JB/T70641993
1993-10-084
1994-01-01
G20 pe/
JB/T70641993
This standard specifies the technical requirements, test methods and inspection rules for semiconductor inverters (hereinafter referred to as inverters). This standard applies to inverters composed of handheld electronic components, and its main content is for self-commutated inverters and load-commutated inverters. This standard does not apply to inverters for motors without commutators and special applications (such as motor vehicles, ships, aviation, etc.). 2 Reference standards
GB-762
GB1980
Rated voltage
Rated current of electrical equipment
Rated load of electrical equipment
Electrical terminology Power electronics technology
GB 2900.33
GB7678
GB10236
GB12668
GB2423
GB3768
GB4208
JB4276
3 Terminology
Stipulation of basic requirements for semiconductor converters
Application guidelines for semiconductor converters
Semiconductor self-commutated converters
Semiconductor Guidelines for mutual interference between power converters and power grids and their protection methods. General technical case for speed control devices of semi-conductor motors. Basic environmental test procedures for electrical and electronic products. Noise source, sound level, power measurement. Classification of enclosure protection levels. Technical conditions for product packaging of converters. This chapter mainly gives common terms related to converters. For other related terms, see GB2900.33. 3.1 Inverter. A converter from DC to AC. 3.2 Voltage source converter. A converter powered by a DC power supply (or DC intermediate link) with voltage source characteristics: its output characteristics have low output voltage for the load (such as during the power-on process). 3.3 Current source inverter
An inverter powered by a DC power source (or DC intermediate link) with power generation characteristics, whose output characteristics have high output impedance to the load (at least in the dynamic process), 3.4 Positive wave inverter
An inverter whose output voltage has a relative harmonic content of no more than 10%. 3.5 Commutation
The process of the current being transferred from one arm to another in sequence, during which the two arms are conducting at the same time and the DC current is not interrupted. 3.6 External commutation
1993-10-08
1994-01-01
JB/T70641993
A commutation method in which the commutation voltage is provided by a power source other than a converter or electronic switch. 3.7 Harmonic load fast phase
A load commutation method in which the commutation voltage is provided by the characteristics of the load. 3.8 Self-commutation (current commutation)
A commutation method in which the commutation voltage is provided by the internal components of the converter or electronic switch. Note: It includes semiconductor devices (such as transistors, gate switches, etc.) that generate their own phase voltage and auxiliary components (capacitors) to provide the phase voltage. Static commutation method
3.9 Turn-off interval
The interval time from the moment when the on-state current in the controllable device drops to zero to the moment when the device starts to withstand the off-state voltage.
3.10 Active power factor
The ratio of active power to apparent power,
Note: In a converter, the above quantity is the AC power of the grid, 3.11 Load power factor
The ratio of load active power to apparent power under sinusoidal voltage conditions of rated power, 3.12 Active power factor
The ratio of the apparent active power produced by the baseband voltage and current to their apparent power, Note: The displacement factor can also be defined as the residual of the angle between the baseband voltage and the baseband current. 3.13 Spectral content
The quantity obtained by subtracting the baseband component from the AC periodic function. 3.14 Relative harmonic content (harmonic conversion factor): the ratio of the root mean square value of harmonic content to the root mean square value of air flow. 3.15 Relative fundamental content (fundamental factor): the ratio of the root mean square value of the fundamental sum to the root mean square value of the alternating current. 3.16 Fundamental power
The active power determined by the fundamental components of voltage and current. 3.17 DC power
The product of DC voltage and DC current (both are average values). 3.18 Efficiency
The ratio of output active power to auxiliary active power. 3.19 Inversion factor
The conversion factor of the inverter, that is, the ratio of the fundamental fluctuation to the DC power. 3.20 Tolerance (tolerance range): The limit range of the allowable deviation of the steady-state value of the stable output quantity during operation. 3.21 New rated value
Values of electrical, mechanical and other performance parameters determined by the manufacturer according to the specified working conditions and use conditions. 3.22 Output voltage
Fundamental root mean square voltage between output terminals. 3.23 Output current
Fundamental root mean square current flowing through the output terminals. 24 Output power
The active power of the output output (the sum of the active power of the fundamental component, harmonic component and harmonic component of the voltage and current). 2
3.25 Output frequency
JB/T70641993
The frequency of the output fundamental voltage or the range of change of the frequency. 3.26 Voltage-frequency ratio
The ratio of the root mean square value of the output voltage to the output frequency is recorded as U) 3.27 Rated output voltage
The output voltage determined by the manufacturer as the calculation basis. 3.28 Provisional auxiliary output current
The output current determined by the manufacturer as the basis for calculating the duty cycle and overload capacity. 3.29 Determined auxiliary output frequency
The output frequency determined by the manufacturer under specified conditions. 3.30 Determined line output current
The maximum RMS current that can be continuously output under specified working conditions and does not exceed the specified limit. 3.31 Determined short-time overload current
The RMS current that can exceed the rated value for a short time (in seconds or minutes) under specified working conditions. 3.32 Rated power supply voltage
The average voltage of the inverter DC input determined by the manufacturer. 3.33 Power supply overvoltage
The peak voltage between the power supply lines at the inverter connection point when the inverter is not connected. 3.34 Power supply voltage
The inductance presented at the power supply output terminal when the inverter is not connected. 3.35 Power dissipation energy
The amount of energy that a DC power supply can deliver to the connected inverter during dissipation. 3.36 Dissipation short-circuit output current
The dissipation current that flows through the short-circuit point when a short circuit occurs at the inverter output terminal. 3.37 Output impedance
The impedance presented by the inverter to the load at a specified frequency. 3.38 Frequency resolution
The amount of adjustable frequency variation. 3.39 Voltage offset
The difference between the instantaneous value of the actual voltage and the instantaneous value corresponding to its waveform when it is not disturbed, expressed as a percentage. 3.40 Voltage dropwwW.bzxz.Net
The change that causes the absolute value of the voltage to decrease instantaneously. 3.41 Voltage rise
Change that causes the absolute value of voltage to increase instantaneously, 3.42 Three-phase asymmetric system
Three-phase system in which the root mean square value of at least one phase voltage or line voltage (or current) is not equal to that of other phases or lines. 3.43 Asymmetry
Ratio of negative sequence component to positive sequence component.
4 Product type and basic parameters
4.1 Inverter type (three-phase and single-phase)
4.1.1. Commutation mode of main power
L External commutation (grid commutation, load commutation): 3
Self commutation (capacitor commutation, device connection), b.
4.1.2 Type of DC system
Current source inverter:
Voltage source inverter.
4.2 Model
JB/T70641993
The product model of semiconductor converter shall comply with the provisions of the standard for the compilation of semiconductor power converter numbers. 4.3 Its main number
4.3.1 Rated auxiliary output current level
Should be selected from the following values according to the provisions of GB762 (A) 1, 2, 5, 1012.5) 16, 20, 25, 31.5. 40, 50.63, 80, 100, 125, 160, 200, 250, 315, 400.500, 630.800, 1000.
Note: When the current other than the above is required, it shall be selected according to the provisions of GB762. The values in brackets shall not be used continuously.
4.3.2 The agreed output voltage level
shall be selected from the following values according to the provisions of GB156 (V): Single phase: 24.36+42, 115, 220
Three phase: 36, 42380, 660, 1000 (11403 Note, ① When a voltage other than the above level is required, it shall be in accordance with the provisions of GB156 or determined by agreement between the user and the manufacturer. The values in brackets are not recommended.
4.3.3 Output frequency and output frequency variation range The output frequency shall be selected from the following values according to the provisions of GB1980 (Hz): 50.(60), 150, 400, (500), 10002500, 4000, 8000, 10000, 2 0000.50000,100000.For the special hot bottle rate below 50, the user and the manufacturer shall jointly set the regulations, and the auxiliary output of the inverter shall be specified in the product standard. Note: the values in brackets are not recommended. 5 Technical requirements
5.1 Environmental conditions
5.1.1 Normal use conditions
5. The sea height does not exceed 1000m:
Note: When the sea height exceeds 1000m, the equipment The load capacity will decrease with the increase of sea load altitude. For the reduction correction method, please refer to Appendix B of GB3859.8. b. The limit temperature of cooling air during operation of the equipment is specified in Table 1. The daily average temperature of cooling air shall not exceed +30°C and the annual average temperature shall not exceed +25°C. The temperature change rate of the working environment shall not exceed 5K/h. Table
Cooling operation
Low temperature
Highest temperature
Note: When the temperature of the equipment during operation is higher than the specified limit temperature, appropriate corrections should be made, see Appendix A of GB3859.2. The minimum relative air temperature is 15%, the maximum relative humidity shall not exceed 90% (equivalent to air at 20±5°C), the change rate of relative humidity shall not exceed 5% per hour, and no dew shall occur: d. There shall be no conductive or welding environment at the operating site, and no gas or blue steam that corrodes metal or damages the insulation: The allowable vibration rate severity level at the equipment installation site is 10150Hz, and the vibration acceleration shall not exceed 5m/s. When the equipment is installed in a place where the alarm surface may generate a common alarm, the equipment should be protected from the alarm response rate. During the storage and transportation of the equipment, the ambient air temperature should be within the range of 40 to 1055°C. The water-cooled equipment should be kept in a static cooling range during storage and transportation. The insulating liquid used for cooling should comply with the relevant standards and technical documents. The water quality requirements for cooling water refer to GB385 9.1 Provisions of Article 5.1.4.2
5.1.2 Non-use of components
High relative humidity and temperature in subtropical or tropical climates: Cooling requirements that may cause corrosion or blockage, such as water or more water! Foreign particles in the surrounding air, such as abnormal dust or lead:
Salty air (such as near the edge of the card), high humidity, dripping water, corrosive gases:
Exposure to steam or oil vapor:
Exposure to explosive powder or gas mixture 5.2.1 The DC voltage fluctuation range is 10%~17.5% of the national standard value; or the voltage fluctuation range when the battery pack is powered is the rated value (the product of the rated voltage of a single battery and the number of series connected batteries) ±15%. When there are special requirements for the DC voltage fluctuation range, corresponding provisions are allowed in the product standard. 5.2.2 The peak-to-valley range of the DC voltage ripple shall not exceed 15% of the rated value. 5.2.3 Able to withstand a certain amount of reverse (feedback) current. 5.24 The overvoltage energy of the input transformer shall not be greater than 4V when the DC power supply is equal to or greater than 260V. When the DC power supply voltage is higher than 260V, the overvoltage energy that may be generated is greater than 4V, which should be stated when ordering. Note: When the input end of the transformer is powered by a rectifier, the auxiliary AC power supply of the rectifier shall comply with the provisions of Article 52 of GB3859.1. 5.3 Rated value of inverter
5.31 Rated output voltage, rated output voltage range Under the specified power supply conditions, when outputting the rated current, the fixed frequency inverter shall be able to ensure the output of the rated voltage, and its voltage level shall comply with the provisions of 4.3.2: The tolerance is ±5% of the rated value. For variable frequency inverters, under the specified power supply conditions, when outputting the rated current, the rated output voltage range is guaranteed, and its maximum value, minimum value and their differential are specified by the product standard. 5.3.2 Rated output current
Under the specified output power and load power rating, the inverter shall output rated current, and its current level shall comply with the provisions of Article 4.3.1. For fixed-power inverters, the load power rating shall be 1.0 (resistive load). For variable-power inverters, the load power rating under the specified output power rating shall be 0.8C. Other load conditions may be agreed upon by the user and the manufacturer. 5.3.3 Rated output frequency and output frequency range Under the specified conditions, the rated output frequency of fixed-power inverters shall be clearly specified in the product standard, and its frequency level shall comply with the provisions of Article 4.3.3. The basic value shall be ±2% of the rated value. For variable-power inverters, the product standard shall specify the output frequency variation range and its maximum and minimum values. 5.34 Maximum relative harmonic content of auxiliary output voltage (wave distortion factor) For sinusoidal wave inverters, under resistive load, the maximum relative harmonic content of auxiliary output voltage should not exceed 10%. For square wave inverters, the maximum relative harmonic content of auxiliary output voltage should comply with the product standard. 5.35 Voltage-frequency ratio (U/A)
JB/T70641993
For inverters that work with a certain corresponding relationship between voltage and frequency, under normal use conditions, the voltage-frequency ratio and its differential should be specified in the product standard.
5.36 The rated values of the variable frequency inverter supplying a single motor (or multiple motors operating as a whole) shall be the same as those of the variable frequency inverter, and the motor type shall be specified. The relevant rated values on the motor compartment and nameplate. 5.37 Duty and its timing mode
5.3.7.1 Duty
When the inverter is working at the rated continuous auxiliary current, non-periodic overload is allowed. The overload phase and duration, as well as the overload period every two times The interval time between non-periodic overloads is specified by the product standard. The overload capacity of the inverter should meet the specified overload requirements within the specified entire power change range and load dynamic efficiency. 5.3.7.2 Marking method
a/bc/def
In which: - Within a specified shorter time (in minutes): the output short-term overload current is expressed as the nominal value of the rated output current; b - The duration of the short-term overload current range in minutes, m in! C--the short-time overload current output within the specified short time (in seconds), expressed by the nominal value of the rated output current! d--the duration of the short-time overcurrent, e--the maximum instantaneous current peak value output by the inverter, expressed by the nominal value of the rated output current: [letters or letter combinations indicating control characteristics! A: Overload separation B. Limit,
C. Frequency modulation start, D. Voltage regulation start
The digital deduction in the marking mode selects the following teaching values : 1.00, 1.12, 1.25, 1.40, 1,60, 1.80, 2.00, 2.40, etc. b - 10, 15 + 20 25, etc.
e 1.0, 1.5 2.0, 3.0, 4.0, etc.
d - 30, 40 50, 60, etc.
e - 1.4, 2.1 2.8, 4.2, etc. for sine waves) 12, 3, 4, etc. (for square waves)
Example of overload capacity representation!
: Pu represents the nominal value of the new auxiliary DC output B
—current output
4.2p·u instantaneous current
3p·u current for 60s
2p·u current for 30min
for virtual, and 1.0 long-term continuous operation time (period) in L, denoted by, 5.4 Technical performance
5.4.1 Efficiency
The efficiency of the inverter at a certain output voltage, a certain output current and a specified load power factor shall be as specified in the product standard. 5.4.1 Load power load
The allowable variation range of the inverter load power load is specified in the product standard. It is recommended to select from 0.71.0, or other values can be agreed upon by the user and the manufacturer. 5.4.3 Load asymmetry
JB/T70641993
The fixed frequency three-phase inverter should be allowed to work under 10% asymmetric load. At this time, the asymmetry of the output voltage should not exceed 10%.
Allow users to agree with the manufacturer to stipulate other asymmetric allowable values. 5.4 Output voltage asymmetry!
Under normal working conditions, within the entire output power variation range, when the load of each phase is symmetrical, the asymmetry of the output three-phase voltage should not exceed 5%,
5-45 Output voltage harmonic component
Under rated working conditions, the inverter's AC auxiliary output voltage harmonic component and its allowable limit value are determined by the product standard or by the user and the manufacturer.
5.4.6 Short-circuit characteristics
The short-circuit characteristics of the device are the minimum I value that the inverter can provide to the branch it supplies power to. Based on this, configure appropriate overcurrent protection devices (such as overcurrent breakers).
The minimum output value should be the oscilloscope diagram of the instantaneous output current when a torque circuit occurs under the rated DC input voltage, rated continuous load and appropriate inrush current. 5.4.7 Starting durability
Under normal working conditions, the inverter should have no less than 5 consecutive normal starts under full load and no-load operating conditions. The shortest time interval between two adjacent starts shall be specified by the product standard or by the user and the manufacturer. For equipment that requires overcurrent starting, it shall be separately specified in the product standard.
5.48 Reclosing
Under rated load, after the temperature rise of the inverter stabilizes, reclosing after work interruption shall be allowed. After each opening, the circuit breaker should be reclosed within the shortest time interval specified in the product standard to avoid faults. The reclosing operation should be performed no less than 5 times.
5.4.9 Voltage sag, voltage swell
According to the needs, the product standard or the user and the manufacturer can stipulate the allowable limit values of the voltage sag, voltage swell and the duration of the over-voltage caused by the step change of the auxiliary voltage and the negative current detected by the inverter (under the load or asymmetric load) in the product standard or the user and the manufacturer. 5.4.10 Power stability error
The product standard should specify the specific conditions (such as the range of changes of power supply voltage and load current) and give the power stability error at the rated auxiliary output frequency. The value is recommended to be selected from the following levels: 0.05% 0.1%, 0.5%. 1.0%. 1.5%. 2.0%. 2.5%, 5.0%. When there are higher requirements for the output power stability performance, the user and the manufacturer shall reach an agreement. 5.4.11 Power resolution
In the output The frequency change range of the inverter should be specified by the product standard. 5.4.12. Under the specified load, after the inverter thermal balance is stable, the temperature of each component inside should not exceed the provisions of Table 2. The limit of the inverter transformer is in Table 15 of CB3859.1. Components and devices Power conductors and other electrical components. Devices Connecting the mother of general low-voltage electrical appliances, the mother connected to the mother of the power semiconductor device is connected to the mother of the bus JB/T70641993 and the technical level, the drum is welcome to inquire, the wall is copper, plated saw, ultrasonic sensitive, purple steel, no reason Shengju, copper, tinned copper, copper, plated saw. |Aluminum, sound-generating limbs and sugar media
Plastic insulated wires or insulation wires connected to semiconductor devices 5.4.13
Overcurrent, overvoltage, long-term voltage and phase loss protection should be set: Short-circuit protection should be set:
Over-rated protection, power semiconductor device over-voltage protection and temporary power failure protection can be set, output grounding protection can be set:
Reduction system protection can be set,
The type and performance of protection are set by the product standard user and the manufacturer. 5.4.14
The electrical distance between the live circuits of the inverter and the electrical distance between the live parts and the conductive parts or grounded parts should not exceed the reasonable standard. The provisions of Table 3 should be met.
The grounding voltage
>60~2 50
>250380
>380~500
>5008-60
>660750
>750~1140
>75300
≥300450
>450-600
≥500- 700
>700800|| tt||>800~1200
Electrical conditions
New rated current
Electrical conditions
The voltages or currents listed in Table 3 are cross-connected average values or DC average values, mm
Electrical resistance
New rated current
Electrical distances between the electrical components and units of the device shall comply with the provisions of the relevant standards. 5.4.15 Insulation resistance and dielectric strength
Dielectric distance
The insulation resistance between the live circuit and the ground (casing) shall not be less than 1M0 when the ambient temperature is 20±5°C and the relative humidity is 90%. The insulation resistance data is only used as an auxiliary judgment before and after insulation certification. The dielectric strength between each live circuit and the ground (casing) and the circuit without electrical connection should be able to withstand the test voltage specified in Table 4 and Table 5. The test voltage duration is 1min, 813
Overcurrent, overvoltage, long-term voltage and phase loss protection should be set; short-circuit protection should be set; over-rated protection, power semiconductor device over-voltage protection and temporary power failure protection can be set; output grounding protection can be set; cooling system protection can be set; the type and performance of protection shall be set by the product standard user and the manufacturer. 5.4.14
Electrical distance
Do not exceed the corresponding standard
Electrical distance and height between each live circuit of the inverter and the live parts and conductive parts or grounded parts shall meet the requirements of Table 3.
Zhiding geovoltage
>60~250
>250380
>380~500
>5008-60
>660750
>750~1140
>75300
≥300450||tt ||>450-600
≥500-700||tt ||>700800
>800~1200
Electrical question
New rated current
Electrical question
The voltage or current listed in Table 3 are all cross-connected square average value or DC average value, mm
Electrical depth
New rated telephone
As the electrical components and units of the device, their electrical distances and dielectric distances shall comply with the provisions of the relevant standards. 5.4.15 Insulation resistance and dielectric strength
Dielectric distance
The insulation resistance between the live circuit and the ground (shell) shall not be less than 1M0 when the ambient temperature is 20±5°C and the relative humidity is 90%. The insulation resistance data is only used as an auxiliary judgment before and after insulation certification. The dielectric strength between each live circuit and the ground (shell) and the circuit without electrical connection should be able to withstand the test voltage specified in Table 4 and Table 5. The test voltage lasts for 1 minute, 813
Overcurrent, overvoltage, long-term voltage and phase loss protection should be set; short-circuit protection should be set; over-rated protection, power semiconductor device over-voltage protection and temporary power failure protection can be set; output grounding protection can be set; cooling system protection can be set; the type and performance of protection shall be set by the product standard user and the manufacturer. 5.4.14
Electrical distance
Do not exceed the corresponding standard
Electrical distance and height between each live circuit of the inverter and the live parts and conductive parts or grounded parts shall meet the requirements of Table 3.
Zhiding geovoltage
>60~250
>250380
>380~500
>5008-60
>660750
>750~1140
>75300
≥300450||tt ||>450-600
≥500-700||tt ||>700800
>800~1200
Electrical question
New rated current
Electrical question
The voltage or current listed in Table 3 are all cross-connected square average value or DC average value, mm
Electrical depth
New rated telephone
As the electrical components and units of the device, their electrical distances and dielectric distances shall comply with the provisions of the relevant standards. 5.4.15 Insulation resistance and dielectric strength
Dielectric distance
The insulation resistance between the live circuit and the ground (shell) shall not be less than 1M0 when the ambient temperature is 20±5°C and the relative humidity is 90%. The insulation resistance data is only used as an auxiliary judgment before and after insulation certification. The dielectric strength between each live circuit and the ground (shell) and the circuit without electrical connection should be able to withstand the test voltage specified in Table 4 and Table 5. The test voltage lasts for 1 minute, 8
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