JB/T 6740.2-1993 Small fully enclosed refrigeration motor-positive temperature coefficient thermistor starting relay for compressor
Some standard content:
Machinery Industry Standard of the People's Republic of China
Small fully enclosed refrigeration motor-compressor
Starting relay with positive temperature coefficient thermistor 1 Subject content and scope of application
JB 6740.2 93||tt ||This standard specifies the terminology, product classification, technical requirements, test methods, inspection rules, marking, packaging, and transportation of positive temperature coefficient thermistor starting relays for small fully enclosed refrigeration motors and compressors (hereinafter referred to as PTC starters) and purchase and deposit. This standard applies to PT (: starters installed on the outer surface of the compressor shell of fully enclosed refrigeration motors and compressors used in refrigeration appliances for household and similar purposes.
This standard should be consistent with JB6740.1 "Small fully enclosed refrigeration motor- "Safety Requirements for Starting Relays for Compressors" will be used from now on, 2 cited standards
GB2423.2 Basic Environmental Testing Procedures for Electrical and Electronic Products Test Ba: High Temperature Test Method CB2423.22 Basic Environmental Testing Procedures for Electrical and Electronic Products Test N: Temperature Change Test method GB2423.10 Basic environmental test procedures for electrical and electronic products Test Fc: Vibration (sinusoidal) test method GB2828 Batch-by-batch inspection and counting sampling procedures and sampling tables GB2829 Periodic inspection and counting sampling procedures and sampling tables JB6740.1 Small fully enclosed refrigeration motor-compression Safety Requirements for Machine Starter Relays 3 Terms
Unless otherwise specified, the "voltage" and "current" used in this standard refer to the effective value 3.1 Action time
At 25C, PTC starter The time from when the current is turned on until the current flowing through the starter drops from the maximum value of 1. The time from when the power is turned off in the steady state under the working voltage until the resistance value drops to 2 times the resistance value at normal temperature
3.3 Resistance value at normal temperature
Zero power of PTC starter at 25C. Resistance value. 3.4 Rated normal temperature resistance value
. The normal temperature resistance value specified by the manufacturer for the PTC starter. 3.5 Maximum operating current
The maximum operating voltage allowed for the PTC starter. The maximum current passed. 3.6 Short-term overvoltage
The voltage value that the PTC starter can withstand in a short time exceeds the maximum working voltage. 3.7 Dissipated power
At 25C, the PTC starter is at normal temperature. , power consumption under stable operating conditions when the maximum operating voltage is applied. Approved by the Ministry of Machinery Industry on August 21, 1993
Implemented on 1993-10-01
t17
4 product categories|| tt||4.1 Type
JB 6740.2
93
The starting relay specified in this standard is a step-type positive temperature coefficient thermistor starting relay. 4.2 Model naming
QP | The letter QP indicates. Model description:
The product category code QP indicates the PTC starter, the structural type code 2 indicates the two-hole plug-in type, and 3 indicates the three-hole plug-in type. The specification code
indicates the PTC starter. Rated normal temperature resistance value (Q). The first design is represented by A, and the second design is represented by B. Design serial number—
Example:
QP2-33A, indicating that the rated normal temperature resistance value is 33Q. , the structure is two-hole plug-in type, the first designed PTC starter. 4.3 Basic parameters
The basic series and basic parameters of PTC starter are optimized according to the values ??listed in Table 1. Table 1
Rated room temperature resistance value
10±20%
15±20%
22±20%
3320%
47±20%
68±20%
100±30%
Maximum operating voltage
V
260,300
260,300|| tt |
A
9
8
7
6
5
4
2.5|| tt||Action time
0. 1~1. 0
0. 1~~1. 2
0.12~1.35
0. 4 -1. 35
0.4~~1.5
0.5~~2.0
1.2~3.0
Recovery time
80
80
80
80
80
80
80
The installation dimensions of the two-hole plug-in starter are shown in Figure 1 (motor-compressor above 360W Except for those used), the appearance and structure should be consistent with the production drawings. The terminal size for electrical connection with the external circuit is 6.3mm×0.8mm. 418
5 Technical requirements
JB 6740. 2-- 93
11.66
Two-hole insertion type
Figure 1 Two-hole insertion type|| tt||5.1PTC starter should comply with this standard and JB6740.1, and be manufactured according to the product drawings and technical documents approved by the prescribed procedures. 5.2 The PTC starter should be able to work normally under the following conditions: ambient air temperature 10~43℃;
a.
b. The relative humidity of the air is not greater than 90% (at 25℃); c. The power supply voltage is the rated voltage and the frequency is the rated frequency; d. There is no corrosive, flammable or explosive gas or conductive dust around. 5.3 Appearance requirements
The appearance should be smooth, without burrs, scratches, blisters, cracks and deformations, terminals without looseness, rust, and clear markings. 5.4 Playing force
If the connection between the PTC starter and the compressor is a plug-in connection, for the two-pole jack, the insertion force should be less than 200N, and the pull-out force should be greater than 25N.
5.5 Normal temperature resistance value
The normal temperature resistance value of the PTC starter should comply with the requirements in Table 1. 5.6 Power dissipation
The power dissipation of the PTC starter under stable operating conditions should not exceed 4W. 5.7 Action time
The action time of the PTC starter should comply with the requirements in Table 1. 5.8 Recovery time
The recovery time of the PTC starter should comply with the provisions of Table 1. 5.9 High temperature resistance
After the PTC starter has passed the high temperature test in 6.10, its appearance should be free of blistering, cracks and deformation, and the change rate of resistance value at normal temperature should not exceed ±20%.
5.10 Hot and cold shock
After the PTC starter passes the hot and cold shock test in Article 6.11, its appearance should be free of blistering, cracks and deformation, and there should be no loose ends; the change rate of the constant overflow resistance value should not be More than ±20%.
5.11 Vibration
After passing the vibration test in Article 6.12, the PTC starter shall have no cracks in appearance and no loose terminals: the change rate of resistance value at normal temperature shall not exceed 20%, and shall comply with Articles 5.6 and 5.7 , Article 5.8 Requirements 5.12 Drop
After passing the drop test in Article 6.13, the appearance of the PTC starter should be free of cracks and the terminals should not be loose; the change rate of the resistance value at normal temperature should not exceed 20%, and should comply with Articles 5.6, 5.7, Requirements of Article 5.8. 5.13 High-temperature continuous energization
After the PTC starter has passed the high-temperature continuous energization test of 6.14, the change rate of the resistance value at normal temperature does not exceed! 20%, and comply with the requirements of Articles 5.7 and 5.8419
.
5.14 Short-time overvoltage performance
JB 6740. 2 -- 93
After the PTC starter has passed the short-time overvoltage test of 6.15, its normal temperature resistance value change rate shall not exceed -6% and comply with the requirements of Articles 5.7 and 5.8.
.5.15 Electrical life
After the PTC starter has passed the 6.16 electrical life test, the change rate of the resistance value at normal temperature does not exceed ±20%. 6 Test methods
6.1i
Test environmental conditions
Unless otherwise specified, the test environmental conditions should meet the following requirements: temperature 20±5℃;
a.
Relative humidity 45%~75%;
b.
c． Atmospheric pressure is 86~106kPa;
should not be affected by external air flow.
d.
6.2 Test instruments and measuring tools
Unless otherwise specified in the standard, the accuracy of the test instruments is as follows: a. The accuracy of electrical measuring instruments is not less than level 0.5 (except megger): during factory inspection, the accuracy is not less than level 1.0; b. Thermal instruments are not less than level 0.5 or have a 0.2°C resolution temperature indicator; before leaving the factory The accuracy during inspection shall not be lower than level 1.0 or 1C resolution;
The resolution of the vernier caliper is 0.02mm or use a micrometer. c.
6.3 Appearance inspection
Check the PTC starter visually and by hand, and it should meet the requirements of Article 5.3. 6.4 Inspection of overall dimensions and installation dimensions
Measured with a vernier caliper, it shall comply with the provisions of Article 4.4. 6.5 Testing of insertion and extraction force
Install the standard plug for PTC starter (see Figure 2) on the insertion and extraction force tester, insert and extract it at a speed of 100~300mm/min, and measure the first insertion force and The result of the 6th pullout force shall comply with the provisions of Article 5.4. 0. 25±0.25
r8-e10
7.3±0.08
09
6.6 Detection of normal temperature resistance value
420
o
RO.61±0.051
%
Material: T10
Hardness;HRC60~62
8-04
Figure 2| | tt | The voltage should not be greater than 2V, the measurement current should not be greater than 10mA, and the resistance value should comply with the requirements of Article 5.5 of the station. 6.7 Detection of dissipated power
In an environment of 25±2°C, wire according to Figure 3. R. in the figure can be 250. The voltage rises from zero volts to the maximum working specific voltage at a speed of 5V/s. After stabilizing for 10 minutes, open the switch K, read the current Ia in the PTC starter, and calculate the dissipated power W according to the following formula: W-Vm·Ia | |tt|| where: Vm maximum operating voltage; V,
measured current value, A.
Ia
R
E
Figure 3
mA one milliamp meter, Vm—
6.8 action time detection|| tt||Voltmeter (internal resistance greater than 1MQ); RL—current limiting resistor; K1 switch is wired according to Figure 4 in an environment of 25±2°C. Test voltage and current-limiting resistor RL according to the data given by the starter manufacturer. Measure the PTC starter. From the time when the current is turned on, the current flowing through the starter drops from the maximum value of 1. to 0.51. The end time (see Figure 5) shall comply with the requirements of Article 5.7.
Rt
Sample
IG
2
Oscilloscope
0
Figure 4
V - Voltmeter; R - Sampling resistor + R - Current limiting current 6.9 Detection of recovery time
T
Figure 5
Wiring according to Figure 6, the PTC starter is at the maximum operating voltage Continuously power on for 10 minutes, then turn off switch K, and measure the time it takes for the PTC starter resistance value to return to 2 times the normal temperature value. It should comply with the requirements of Article 5.8. The current passing through the PTC starter during the test should not exceed the maximum operating current.
121
6.10 High Temperature Test
JB 6740.2 -- 93
Figure 6
The test method is carried out according to GB2423.2, and the PTC starter is placed Raise the temperature to 125C in a constant temperature box and keep it for 1000h. Leave it at room temperature for more than 4h. The test results should meet the requirements of Article 5.9. 6.11 Hot and cold shock test
The test method is carried out according to GB2423.22. Place the PTC starter in a low temperature box at 20C for 15 minutes, then place it at room temperature for 5 minutes, then place it in a high temperature box at 120°C for 15 minutes and then leave it at room temperature. 5min is a cycle. After 1o cycles of hot and cold shock, place it at room temperature for more than 4h. The test results should comply with the requirements of Article 5.10. 6.12 Vibration test
The test method is carried out according to GB2423.10. The PTC starter is fixed on the vibration test bench and vibrates for 1 hour in three mutually perpendicular directions with an amplitude of 1.5mtm and a frequency of 25~30Hz. Meet the requirements of Article 5.11. 6.13 Drop test
Place the sample individually in a 4mm thick corrugated box and drop it freely from a height of 600mm to the cement floor once in three mutually perpendicular directions. Inspection of the specimen after falling shall comply with the requirements of Article 5.12. 6.14 High-temperature continuous power-on test
The PTC starter is applied with the maximum operating voltage in a constant temperature environment of 100±5C, and is continuously powered for 1000h. After the power is turned off, it is left at room temperature for more than 4h. The test results should comply with the requirements of Article 5.13. 6.15 Short-term overvoltage test
Wiring as shown in Figure 7, the voltage rises from zero volts to 1.4 times the maximum operating voltage at a speed of 5V/s, keep it for 3 minutes, and leave it in an environment of 25 (for more than 4 hours after the power is turned off. The resistance value at normal temperature should comply with the requirements of Article 5.14. The current through the PTC starter should not exceed the maximum operating current.
Figure 7
R． -Ammeter 422
6.16 Electrical Life Test
JB 6740.2—93
Place the PTC starter in a room temperature environment, wire it according to Figure 6, and apply the maximum working voltage and maximum working current. According to power-on 5, power-off 120$ should meet the requirements of Article 5.15 after 200,000 cycles, but it should be removed for testing at 10,000, 50,000, 100,000, and 150,000 cycles, and it should meet the requirements of Article 5.15. 5.15 Requirements Note: This test can be carried out under actual load. 7
Inspection rules
PTC starter inspection is divided into general inspection and type inspection. 7.1 Factory inspection
The product is shipped from the factory. Only after passing the inspection can it be shipped out. The items of factory inspection are shown in Table 2 and Table 3. The performance items of 7.1.1 factory inspection are shown in Table 2. According to the provisions of GB2828, a normal inspection sampling plan is used for inspection. The qualified quality level AQL and The inspection level is shown in Table 2. If there are special requirements, it can be determined by agreement between the manufacturer and the orderer. Table 2
Serial Number
2
3
4||tt| |5
6
7
8
7.1. 2
Item
Appearance
Dimensions||tt ||Mark
Insertion and extraction force
Resistance value at normal temperature
Dissipated power
Action time
Recovery time
This standard chapter, Article
Technical requirements
5.3
4.4
8,1
5. 4
5.5
5.6|| tt||5.7
5.8
Test method
6.3
6.4
6.5
6.6
6.7||tt ||6.8
6. 9
AQL
2.5
2.5
2.5
2.5
2.5||tt ||2.5
Check water
Ⅱ
Ⅱ
The safety items of factory inspection are shown in Table 3. The sampling plan refers to GB2828, general inspection level II, and one sampling is required for normal inspection. Form
case, but as long as one item is not qualified, the batch of products will be judged as unqualified. Table 3
Procedure
Type test
7.2|| tt||7.2.1
a.
b.bZxz.net
c.
d.
e.
f.
1
2
No.
In the following situations, type testing should be carried out: when new products are trial-formulated;
item||tt| |Object
Insulation resistance
Electrical strength
After formal production, if there are major changes in structure, materials, and processes, which may affect product performance; when production is resumed after half a year of suspension;| |tt|| For continuously produced products, the test shall be conducted once a year (except for high temperature resistance and high temperature continuous power test); when the inspection results are significantly different from the last type inspection; when the national quality supervision agency proposes type inspection requirements. Note: The electrical life test is only performed under conditions a and b. JB6740.1 belongs to chapters and articles
4.8.1
4.8.2
423
JB6740 .2-93
7.2.2 Samples for type inspection should be randomly selected from batches of finished products. Type inspection items include performance items and safety items. 7.2.3 The performance items, grouping order and number of samples for type inspection are shown in Table 4. It is based on the G32829 judgment level 1 - one-time sampling case. 1 qualified quality water certificate RQL30 (sample size: 7=3), the number of judgment groups : A.=0, R.=1 experiments are carried out in order.
Table 4
Serial number
1
2
3
4
G
7| |tt||8
9
10
12
13
14
15
16||tt ||Test project
Logo
Packaging box
Appearance
Small size
Insertion and extraction force
Normal temperature resistance||tt| |Dissipated power
Action time
Recovery time
High temperature resistance
Hot and cold shock
Vibration
Drop
High temperature continuous energization
Short-time overvoltage
Electrical life
Technical requirements
8.1
8.2
5.3
4.4
5. 4
5.5
5.6
5.7
5.8
5.9
5.10
5.11
5.12
5.13
5.14
5.15
This standard contains chapters and articles
Test method
6.3|| tt||6.1
6.5
6.6
6.7
6.8
6.9
6.10
6.1||tt| |6.12
6.13
6.14
6.15
6.16
Number of samples
3
3||tt| |.-
The safety items, grouping order, number of samples and evaluation of type inspection shall be carried out in accordance with the provisions of JB6740.1, but the items in Table 1 are not repeated. 7.2.4
do experiments.
7.2.5 If the type inspection fails, the factory should be stopped, the reasons should be analyzed immediately, and treatment methods should be proposed until the new type inspection passes. 7.2.6 Samples that have passed the type inspection shall not be shipped as qualified products. 8 Marking, packaging, transportation and storage
8.1 Marking
When the PIC starter leaves the factory, the following content should be clearly marked in the appropriate position and comply with the relevant regulations of JB6740.1. a.
h.
c.
424
Factory name or trademark;
Product model:
Limit temperature of the installation surface (when necessary). JB 6740. 2 - 93
8.2 Packaging
8.2.1 The packaging of PTC starter should comply with the national standard "Packaging and Marking of Electrical Accessories and Household and Similar Purpose Controllers and Protectors".
8.2.2 The small packaging box of the PTC starter has a cardboard compartment or a foam plastic box suitable for its outer dimensions, and is accompanied by product instructions and product certificates.
The product trademark, model, specification, production date, and quality inspection number should be marked with non-fading pigment on the certificate. 8.2.3
8.2.4
8.2.5
b
c.
d.
e.||tt| |f.
g.
The small packaging box is placed inside the large packaging box. The large packaging box is made of corrugated paper. The large packaging box should be strong and reliable, and have moisture-proof and vibration-proof measures. The outer wall of the packaging box should be marked with non-fading pigments as follows: product name;
product model and specifications;
PTC starter quantity:
gross weight;
volume: long article width Unit mailing address.
i.
8.3 Transportation
The packaged PTC starter should be suitable for transportation by any means of transportation, and should avoid heavy pressure, rain, falling, throwing, and rolling. 8.4 Storage
The packaged PTC starter should be stored in a warehouse with good ventilation, an ambient temperature of -10~~40℃, and a relative humidity of less than 80% (at 25C). The surrounding area should be free of corrosive, radioactive, Flammable, explosive and toxic substances. Additional notes:
This standard is proposed and managed by the National Technical Committee for Standardization of Electrical Accessories. This standard is drafted by the Guangzhou Electrical Equipment Research Institute of the Ministry of Mechanical and Electrical Engineering. The main drafters of this standard: Yang Zhaote and Rao Qinfang. 425
5. If the type inspection fails, the factory should be stopped, the reasons should be analyzed immediately, and treatment methods should be proposed until the new type inspection passes. 7.2.6 Samples that have passed the type inspection shall not be shipped as qualified products. 8 Marking, packaging, transportation and storage
8.1 Marking
When the PIC starter leaves the factory, the following content should be clearly marked in the appropriate position and comply with the relevant regulations of JB6740.1. a.
h.
c.
424
Factory name or trademark;
Product model:
Limit temperature of the installation surface (when necessary). JB 6740. 2 - 93
8.2 Packaging
8.2.1 The packaging of PTC starter should comply with the national standard "Packaging and Marking of Electrical Accessories and Household and Similar Purpose Controllers and Protectors".
8.2.2 The small packaging box of the PTC starter has a cardboard compartment or a foam plastic box suitable for its outer dimensions, and is accompanied by product instructions and product certificates.
The product trademark, model, specification, production date, and quality inspection number should be marked with non-fading pigment on the certificate. 8.2.3
8.2.4
8.2.5
b
c.
d.
e.||tt| |f.
g.
The small packaging box is placed inside the large packaging box. The large packaging box is made of corrugated paper. The large packaging box should be strong and reliable, and have moisture-proof and vibration-proof measures. The outer wall of the packaging box should be marked with non-fading pigments as follows: product name;
product model and specifications;
PTC starter quantity:
gross weight;
volume: long article width Unit mailing address.
i.
8.3 Transportation
The packaged PTC starter should be suitable for transportation by any means of transportation, and should avoid heavy pressure, rain, falling, throwing, and rolling. 8.4 Storage
The packaged PTC starter should be stored in a warehouse with good ventilation, an ambient temperature of -10~~40℃, and a relative humidity of less than 80% (at 25C). The surrounding area should be free of corrosive, radioactive, Flammable, explosive and toxic substances. Additional notes:
This standard is proposed and managed by the National Technical Committee for Standardization of Electrical Accessories. This standard is drafted by the Guangzhou Electrical Equipment Research Institute of the Ministry of Mechanical and Electrical Engineering. The main drafters of this standard: Yang Zhaote and Rao Qinfang. 425
5. If the type inspection fails, the factory should be stopped, the reasons should be analyzed immediately, and treatment methods should be proposed until the new type inspection passes. 7.2.6 Samples that have passed the type inspection shall not be shipped as qualified products. 8 Marking, packaging, transportation and storage
8.1 Marking
When the PIC starter leaves the factory, the following content should be clearly marked in the appropriate position and comply with the relevant regulations of JB6740.1. a.
h.
c.
424
Factory name or trademark;
Product model:
Limit temperature of the installation surface (when necessary). JB 6740. 2 - 93
8.2 Packaging
8.2.1 The packaging of PTC starter should comply with the national standard "Packaging and Marking of Electrical Accessories and Household and Similar Purpose Controllers and Protectors".
8.2.2 The small packaging box of the PTC starter has a cardboard compartment or a foam plastic box suitable for its outer dimensions, and is accompanied by product instructions and product certificates.
The product trademark, model, specification, production date, and quality inspection number should be marked with non-fading pigment on the certificate. 8.2.3
8.2.4
8.2.5
b
c.
d.
e.||tt| |f.
g.
The small packaging box is placed inside the large packaging box. The large packaging box is made of corrugated paper. The large packaging box should be strong and reliable, and have moisture-proof and vibration-proof measures. The outer wall of the packaging box should be marked with non-fading pigments as follows: product name;
product model and specifications;
PTC starter quantity:
gross weight;
volume: long article width Unit mailing address.
i.
8.3 Transportation
The packaged PTC starter should be suitable for transportation by any means of transportation, and should avoid heavy pressure, rain, falling, throwing, and rolling. 8.4 Storage
The packaged PTC starter should be stored in a warehouse with good ventilation, an ambient temperature of -10~~40℃, and a relative humidity of less than 80% (at 25C). The surrounding area should be free of corrosive, radioactive, Flammable, explosive and toxic substances. Additional notes:
This standard is proposed and managed by the National Technical Committee for Standardization of Electrical Accessories. This standard is drafted by the Guangzhou Electrical Equipment Research Institute of the Ministry of Mechanical and Electrical Engineering. The main drafters of this standard: Yang Zhaote and Rao Qinfang. 425
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