JB/T 3717-1999 Household AC voltage regulator

This standard specifies the product classification, technical requirements, test methods, inspection rules, packaging and storage of household AC voltage regulators (hereinafter referred to as voltage regulators). This standard applies to voltage regulators with a rated voltage not exceeding 250V, a rated frequency of 50Hz, and a rated output capacity not exceeding 3000VAC. JB/T 3717-1999 Household AC voltage regulator JB/T3717-1999 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T3717
1999-08-06
Wa Xian Ji Dong
2000-01-01
JB/T3717
This standard is a revision of JB 3717-84 household AC voltage regulator. The main changes between this standard and JB3717-84 are: 1. This standard is formatted according to GB/T1.1-1993 and GB1.3-1997. 2. The scope of this standard stipulates that the output capacity does not exceed 3000VA, while the original standard is "2500VA"; 3. The input voltage range of this standard is 120~250V, while the original standard is 160~250V; 4. The safety requirements such as leakage current and electrical strength of the original standard are modified according to GB4706.1-1992; 5. Technical requirements and test methods such as "overvoltage protection, undervoltage protection, and delayed output time" are added; 6. The requirements for the temperature rise of Class B and Class F insulation in the coil are added. Appendix A of this standard is the appendix of the standard. This standard replaces B3717-84 from the date of implementation. This standard was proposed and approved by Guangzhou Electric Science Research Institute. The issuing unit of this standard: Guangzhou Electric Science Research Institute. The main drafters of this standard are Xu Yanrong and Liu Jingchang. This standard was first issued in July 1984.
This standard is interpreted by Guangzhou Electric Science Research Institute. I
JB/T37171999bzxZ.net
JB/T37171984
This standard specifies the product classification, technical requirements, test methods, inspection rules, packaging and storage of household AC voltage regulators (hereinafter referred to as voltage regulators).
This standard applies to voltage regulators with a rated voltage not exceeding 250V, a rated frequency of 50Hz and a rated output capacity not exceeding 3000VA. 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of the standard, the versions shown are valid. All standards will be revised. Parties using this standard should explore the possibility of using the latest version of the following standards. GB/T 755—1987
GH 1002--1996
GB/T 1497—1979
GB 2099.1-—1996
GB/T4214—1984
GB 4343—1995
GB 4706.I—1992
Basic technical requirements for rotating motors
Types, basic parameters and dimensions of single-phase plugs and sockets for household and similar purposesBasic standard for low-voltage electrical appliances
Plugs and sockets for household and similar purposes - Part 1: General requirementsDetermination of noise power level of household appliances
Measurement methods and allowable values ​​of radio interference characteristics of household and similar electric and heating appliances, electric tools and similar electrical appliances
General safety requirements for household and similar electrical appliancesThis standard adopts the following definitions.
3.1 Electronic voltage regulator ekextronic voltage regulator uses electronic circuit to control servo motor to drive the brush of contact voltage regulator to achieve automatic voltage regulation. 3,2 Auto-coupled voltage regulator self-coupled voltage regulator coils are wound on the same core, and the number of winding turns is changed to achieve the voltage regulation. 33 Contact voltage regulator contact voltage regulator uses the change of sliding contact position to change the efficiency ratio of the common coil and the series coil in the auto-coupled coil to achieve the voltage regulation.
3.4 ​​Saturation magnetization voltage regulator
saturation magnetization voltage regulator uses a resonant circuit composed of inductors and capacitors to achieve the voltage regulation. 4 Product classification
4.1 Classification
1999-08-06
2000-01-01
JB/T37171999
Voltage regulators are divided into electronic voltage regulators, self-help voltage regulators and magnetic voltage stabilizers according to the voltage regulation method. 4.2 Rated value
Input voltage range: 120-250V:
—Rated output voltage: 220V (except self-voltage regulators) Rated output capacity: specified by the enterprise product standards. 4.3 Model
The model of the voltage regulator and its meaning are as follows:
Output capacity (VA)
Design sequence code
“D” indicates electronic voltage regulator
“W” indicates magnetic saturation voltage regulator
“M” indicates autocoupler voltage regulator
Indicates the category code of household appliances
Example: TD-200 indicates a household electronic voltage regulator with an output of 200VA, the first design (province) 5 Requirements
5.1 Normal use conditions:
a) Ambient air temperature: ~5-+40℃; h) Maximum relative humidity of ambient air 90% (when the temperature is +25℃); c) Altitude not exceeding 1000 m;
d) No steam, chemical deposition, dust, dirt and other harmful corrosive media; e) No severe vibration and tremor;
0 Indoor use.
5.z Safety requirements
5.2.1 Protection against electric shock
The structure of the voltage regulator should have good protection to prevent the user from any contact with its live parts during normal use. 5.2.2 Temperature rise
The temperature rise of the coil, core, shell and brush contact of the voltage regulator should not exceed the requirements of Table 1. 5.2.3 Leakage current
The leakage current of the voltage regulator should not be greater than 0.75 mAc 5.2.4 Insulation resistance
The insulation resistance of the voltage regulator under humid conditions should be not less than 2M. 2
Measurement location
Easy-to-touch shell surface
Contact place of carbon brush
Outer surface of capacitor
Class A insulation
JB/T37171999
Temperature rise group Jiagong
Class E insulation
Class B insulation
With maximum working temperature T Mark T—35
No maximum operating temperature mark 50
F grade insulation
Note: The above temperature rise is the value at an altitude of 10D0m. When testing at different altitudes, it should be corrected according to the provisions of GB/T1497. 5.2.5 Electrical strength
Measurement method
Resistance method
Thermocouple method
The voltage regulator should be able to withstand an electrical strength test of 50Hz positive oscillating voltage for 1min without flashover and breakdown. Test voltage:
Under working temperature: 1000V
Under humid conditions: [250 V.
3.2.6 Overload protection
The structure of the voltage regulator should take into account: in case of a short circuit in normal use, the voltage regulator or related circuits will not cause overheating:
5.2.7 Power cord
5.2.7.1 The power cord should be an RVV or RVVB type cord with an effective length of not less than 1.5m and a non-rewirable plug. Its nominal cross-sectional area should not be less than the value listed in Table 2.
Input current I
16<[≤25
Note: The input current value corresponds to the lower limit of the input voltage range, the nominal lock cross section
5.2.7.2 The power plug and the power output socket of the voltage regulator shall comply with the provisions of GB2099.1 and GB1002. 5.2.7.3 The power cord shall be equipped with a cord fixture at the connection of the voltage regulator to prevent the wire from being subjected to tension including twisting and to prevent the insulation of the wire from being worn.
The cord fixture shall be installed so that it can only be touched with the help of tools or designed so that the cord can only be fixed with the help of tools. Conduct tension test and torque test on the cord according to the tension and torque specified in Table 3: After the test, the cord shall not be damaged and the longitudinal displacement shall not exceed 2mm.
Voltage regulator quality Akg
5.2,8 Internal wiring
JB/T37171999
Internal wiring shall comply with the provisions of GB4706.1-1992 Chapter 23. 5.2.9 Grounding measures
The grounding measures shall comply with the provisions of GB4706.1-1992 Chapter 27, twist
N·㎡
The resistance between the grounding terminal of the voltage regulator or the grounding electrode of the power output socket and the easily accessible metal parts of the shell shall not be less than o.in.
5.2.10 Creepage distance and electrical clearance
Creepage distance should not be less than the value shown in Table 4, Table 4
Between live parts of different polarities!!;
There is protection against dirt deposition 2,
Enameled wire mirror assembly
Between live parts and other metal parts across basic insulation: There is protection against dirt accumulation 11
Live parts are enameled velvet windings
Creepage distance quotient
Electrical clearance
1) It is not applicable to the air gap between contacts of thermal controllers, overload protection devices, micro-source structure switches, etc. It is also not applicable to the gap between small current-carrying components of devices that produce gap changes as the contacts move, 21
A tool with an appropriate dustproof shell can be considered to be protected against dirt deposition without complete sealing as long as it does not produce dust inside itself.
5.2.11 Rust prevention
The steel parts in the voltage regulator should have sufficient rust prevention ability. 5.3 Performance requirements
5.3,1 Appearance
a) The appearance of the voltage regulator should be flat and clean: the paint film on the surface of the painted parts must be smooth and even in color, with a firm paint layer, and its main surface should be free of obvious defects such as paint flow, wrinkles and peeling. The plating layer of electroplated parts should be bright, fine and uniform in color, without spots, pinholes, bubbles and falling off.
b) Buttons, switches and other operations should be flexible and reliable, and parts should not be loose. c) The text, graphics and symbols describing the functions should be clear and durable. d) The indication function is normal.
5.3.2 Specified capacity of household voltage regulator
JB/T3717
The rated capacity P of household voltage regulator is calculated as follows: 5.3.2.1
P.-U, - I.........
Where: P,-
Rated capacity, VA;
U-Output voltage, V:
Rated output current, A
3.3.2.2 Output capacity of voltage regulator The output capacity of voltage regulator shall comply with the requirements of the curve shown in Figure 1, P)
210240270, (V)
Output capacity curve of electronic voltage regulator
Rated loss
Requirements. The rated loss (no-load loss, no-load current) of auto-voltage regulator shall not exceed the requirements of Table 5. Electronic voltage regulator group,
No-load loss w
Rated output loss VA
No-load current A
Magnetic saturation voltage regulator, under the condition of rated input voltage, rated frequency and rated output current, its efficiency shall not be less than the value in Table 6
Rated output voltage accuracy
5.3.4 Input voltage accuracy
JB/T37171999
When the input voltage changes within the specified range, the percentage of the output voltage change relative to the rated output voltage to the rated output voltage shall comply with the provisions of Table 7.
Note: Auto-coupling voltage regulator does not have input voltage viscosity requirements, only for voltage regulation range assessment. Table 7
Electronic voltage regulator
Magnetic and voltage stabilizer
5.3.5 Overvoltage protection
5.3.5.1 The output voltage overvoltage protection voltage value shall not be greater than 250V. Output voltage accuracy
5.3.5.2 When the input voltage rises or falls rapidly within the input voltage range, the output voltage of the voltage regulator shall not have an instantaneous overvoltage exceeding 250V.
5.3.6 Undervoltage protection
The output voltage undervoltage protection voltage value shall not be less than 180V. 5.3.7 Delayed output time
The time for delayed output voltage shall not be less than 3 min. 5.3.8 Response time
When the input voltage deviates from the rated value by 10%, the output voltage of the electronic voltage regulator shall recover to the specified voltage regulation accuracy within 45°C.
5.3.9 Waveform distortion
Within the specified range of input and output voltage changes, the distortion of the no-load or loaded output voltage waveform compared with the standard sine wave shall not exceed 3%
Note: This test is not required for magnetic saturation stabilizers. 5.3.10 Noise
Magnetic saturation stabilizers must be tested for noise. The noise is measured in A-weighted sound power level and its value shall not exceed the requirements of Table 8. 8
Maximum noise sound power level
5.3.11 Radio interference
Household voltage regulators shall not cause excessive interference to radio or television and shall comply with the following values: Within the frequency range of 0.15~300 MH[z/s, the allowable deflection value shall not exceed 60 dB5.3.12 Contact spark
When the output current does not exceed the rated value, the brush contact spark level shall not exceed the level specified in Articles 33 and 35 of GB/755-1987
5.3.13 Abnormal use
When the brush position of the electronic voltage regulator is at the specified minimum input voltage limit position, even at the specified maximum input voltage limit value (GB/T37171999), the electronic voltage regulator shall not be damaged when subjected to over-induction, and shall be able to start and operate normally. 5.3.13.2 The magnetic saturation voltage regulator shall be at 1.1 5.3.14 Lifespan
5.3.14.1 When the electronic voltage regulator is supplied with rated output current, it should be able to work normally after 20,000 round trips within the input voltage range, and the carbon fiber loss should not exceed 1mm
3.3.14.2 Under normal use conditions, the magnetic saturation voltage regulator can continue to be used after 5000l of continuous operation. 6 Test methods
6.1 General test conditions
6.1.1 Except for the tests for which the test conditions have been specifically specified, the test shall be conducted indoors with an ambient temperature of 20±5, no external airflow, no strong sunlight and other heat radiation. The positive fluctuation of the test frequency power supply shall not exceed 1% of the rated voltage. The frequency fluctuation range is 49.5~50.5Hz. The medium voltage when the input voltage is 220V is taken as the rated input voltage. 6.1.2 Test instruments
a) The accuracy of the ammeter, voltmeter and power meter used in the type test shall not be less than Class 0.5. Class 1 can be used for factory tests; b) The accuracy of the instrument for measuring temperature shall not be less than 0.5℃; c) The accuracy of the instrument for measuring time shall not be less than 0.1s; d) The accuracy of the instrument for measuring frequency shall not be less than Class 0.5. 6.1.3 Test load
6.1.3.1 Unless otherwise specified, the performance test of electronic voltage regulator and auto-coupling voltage regulator shall adopt resistive load as test load. The resistance value is calculated as follows:
Resistive rated load:
Where: R
U--rated output voltage, V:
P--rated output capacity, VA:
6.1,3,2The load adopted for the performance test of magnetic saturation voltage regulator shall comply with the provisions of Appendix A. 6.2 Anti-electric shock protection test
Use the standard test finger shown in Figure 2 of GB4706.11992: Carry out the test according to the circuit shown in Figure 1 of this standard: (2)
The test finger shall be placed in any accessible position, and an indicator light shall be used to indicate whether it is in contact with the live parts of the voltage regulator under test. The test voltage shall not be less than 4 0V, should meet the requirements of 5.2.1: 2
z--indicator lamp:
T--tested sample:
S--standard test finger
Figure 2 Anti-electric shock test circuit
6.3 Overflow test
JB/T37171999
Place the voltage regulator on a support of about 20mm thick plywood painted with matte black paint. Under the specified test conditions, place more than 2 thermometers 2m away from the voltage regulator. The average value of their readings is the ambient temperature. The voltage regulator operates for not less than 41 at the rated input voltage, rated current and rated output current. After the heat reaches a stable state, measure the temperature rise. Note: For voltage regulators and auto-coupling voltage regulators, the test should be carried out when the input voltage is 210V. a) Use the thermocouple method to measure the temperature rise of the hottest surface of the voltage regulator; d) Use the thermocouple method to measure the temperature rise of the iron core, capacitor, and carbon of the voltage regulator. The measuring part should be the hottest point; ) Use the resistance method to measure the temperature rise of the cable group. The measurement of hot resistance must be completed within 20 seconds after the power is cut off; d) The cold and hot resistance should be measured using an intermediate bridge, and a single replacement bridge can be used; e) The temperature of the winding is calculated by the following formula: +-Rer (23$t) - (tt)..
Wu Zhong: t-
Temperature rise of the winding, ℃:
R,-cold resistance of the winding at T,:
R-hot resistance of the winding at T,;
t,Room temperature at the beginning of the test, :
Room temperature at the end of the test,.
The temperature rise value of the test meets the requirements of 5.2.2. 6.4 Leakage current test
6.4.1 Leakage current test at operating temperature (3)
The test should be carried out immediately after the test in 6.3. The transformer is operated at the upper limit of the input voltage range. According to the circuit shown in Figure 3, the leakage current between any pole of the power supply and the easily accessible metal parts is measured. When measuring the leakage current, the switch K should be switched to different polarities of the power supply. The larger leakage current value should meet the requirements of 5.2.3.
T—Tested sample:
K—Single-pole double-drop switch, R—Protective resistor 2K±100; Figure 3 Leakage current measurement circuit
6.4.2 Leakage current test under humid conditions A—AC ammeter
First, subject the voltage regulator to humid treatment according to the method specified in 15.4 of GB4706.1-1992, and then immediately conduct a leakage current test under humid conditions in a humid room (box). The test voltage is 0.06 times the upper limit of the rated voltage range. Measure the leakage current between any pole of the power supply and the easily accessible metal parts according to the circuit shown in Figure 3. The measurement should be carried out within 5s after the test voltage is applied, and the result should meet the requirements of 5.2.3. 6.5 Insulation resistance measurement
The test should be carried out in a humid room (box) immediately after the test in 6.4.2. The power switch of the voltage regulator should be placed in the on position. The insulation resistance value should be measured after applying a DC voltage of about 500V for 1min between the power input terminal and the metal parts of the shell. The measured insulation resistance value should meet the requirements of 5.2.4.
Note: For electronic voltage regulators, it is allowed to disconnect the electronic components before measurement. 6.6 Electrical strength test
6.,6.1 Electrical strength test under working filter The test should be carried out immediately after the test in 6.4.1 in accordance with the provisions of GB4706.1-199213.3. The test voltage is 1000V and should comply with the requirements of 5.2.5.
Note: For electronic voltage regulators, it is allowed to disconnect the electronic components before testing. 6.6.2 Electric strength test under humid conditions The test shall be carried out immediately after the test in 6.4.2 in accordance with the provisions of 16.4 of GB4706.1-1992. The test voltage is 1250V and shall meet the requirements of 5.2.5.
Note: For electronic voltage regulators, it is allowed to test after disconnecting the electronic components. 6.7 Overload protection test
The overload protection test shall be carried out in accordance with the provisions of Chapter 17 of GB4706.1-1992 and shall meet the requirements of 5.2.6. 6.8 Power cord inspection
6.8.1 Determine whether the effective length, model and nominal cross-sectional area of ​​the power cord meet the requirements of $.2.7.1 through visual inspection and measurement. 6.8.2 Test the power plug and output socket in accordance with GB2099.1 and GB1002 and meet the requirements of 5.2.7.2. 6.8.3 According to the provisions of 25.11 of GB4706.1-1992, the power cord fixture shall be inspected and tested for tension, and shall meet the requirements of 5.2.7.3.
6.9 Grounding measures inspection
Perform visual inspection and grounding resistance test according to the provisions of Chapter 27 of GB4706.1-1992, and shall meet the requirements of 5.2.9. 6.10 Creepage distance and electrical clearance inspection
Perform measurement according to the provisions of Chapter 29 of GB4706.1-1992 to determine whether it meets the requirements of 5.2.10. 6.11: Rust prevention
Perform rust prevention test according to the provisions of Chapter 31 of GB4706.1-1992, and shall meet the requirements of 5.2.11. 6.12 Rated loss test
The rated performance test of the transformer shall be connected as shown in Figures 4 and 5. 9
V voltmeter;
A- Ammeter:
JB/T3717
W-- Power meter; Z Test load:
T Sample machine
Figure 1 No-load and voltage regulation characteristic test circuit of electronic voltage regulator and self-voltage regulator V voltage cut:
A- Ammeter:
W- Power loss:
KK switch
Z Simulated load
Figure 5 Stable performance test circuit of magnetic saturation voltage regulator 6.12.1 No-load and voltage regulation characteristic test of voltage regulator, the test circuit is shown in Figure 4. T-Test machine
The current and power measured when the input terminal of the voltage regulator is open at the rated input voltage are the no-load current and no-load loss of the voltage regulator. ,12.2 Efficiency measurement of the magnetic and voltage regulator. The test wiring is shown in Figure 5. When the magnetic and voltage regulator are at rated input voltage and predetermined output current, the input and output voltage, current and power are measured respectively. According to the measured test data, the efficiency is calculated by the following formula: P2×100%
Where: n-
Efficiency of the voltage regulator, %;
P,--The actual measured input power of the voltage regulator, VA: P
The actual measured output power of the voltage regulator, VA. Note: When reading any value, irrelevant instruments must be divided from the measured voltage. 1012 Rated loss test
The rated performance test of the voltage regulator is connected as shown in Figure 4 and Figure 5. 9
V voltmeter;
A- Ammeter:
JB/T3717
W-- Power meter; Z Test load:
T Sample machine
Figure 1 No-load and voltage regulation characteristic test circuit of electronic voltage regulator and self-voltage regulator V voltage cut:
A- Medium vegetable meter:
W- Power loss:
KK switch
Z Simulated load
Figure 5 Rated performance test circuit of magnetic saturation voltage regulator 6.12.1 No-load and voltage regulation characteristic test of voltage regulator, the test circuit is shown in Figure 4. T-Test machine
The voltage regulator is under the rated input voltage. The current and power measured when the input terminal is open circuit are the no-load current and no-load loss of the voltage regulator. 12.2 Efficiency measurement of the magnetic and voltage regulator. The test wiring is shown in Figure 5. When the magnetic and voltage regulator are at rated input voltage and predetermined output current, the input and output voltage, current and power are measured respectively. According to the measured test data, the efficiency is calculated by the following formula: P2×100%
Where: n-
Efficiency of the voltage regulator, %;
P, - Actual measured input power of the voltage regulator, VA: P
Actual measured output power of the voltage regulator, VA. Note: When reading any value, irrelevant instruments must be divided from the measured voltage. 1012 Rated loss test
The rated performance test of the voltage regulator is connected as shown in Figure 4 and Figure 5. 9
V voltmeter;
A- Ammeter:
JB/T3717
W-- Power meter; Z Test load:
T Sample machine
Figure 1 No-load and voltage regulation characteristic test circuit of electronic voltage regulator and self-voltage regulator V voltage cut:
A- Medium vegetable meter:
W- Power loss:
KK switch
Z Simulated load
Figure 5 Rated performance test circuit of magnetic saturation voltage regulator 6.12.1 No-load and voltage regulation characteristic test of voltage regulator, the test circuit is shown in Figure 4. T-Test machine
The voltage regulator is under the rated input voltage. The current and power measured when the input terminal is open circuit are the no-load current and no-load loss of the voltage regulator. 12.2 Efficiency measurement of the magnetic and voltage regulator. The test wiring is shown in Figure 5. When the magnetic and voltage regulator are at rated input voltage and predetermined output current, the input and output voltage, current and power are measured respectively. According to the measured test data, the efficiency is calculated by the following formula: P2×100%
Where: n-
Efficiency of the voltage regulator, %;
P, - Actual measured input power of the voltage regulator, VA: P
Actual measured output power of the voltage regulator, VA. Note: When reading any value, irrelevant instruments must be divided from the measured voltage. 10
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