JB/T 7827-1995 General technical requirements for electromagnetic locks for high voltage switchgear
Some standard content:
Machinery Industry Standard of the People's Republic of China
JB/T7827-1995
General Technical Conditions for Electromagnetic Locks for High-voltage Switchgear Issued on November 24, 1995
Ministry of Machinery Industry of the People's Republic of China
Implementation on July 1, 1996
JB/T7827-1995
This standard replaces JB/DQ2181-86 "General Technical Conditions for Electromagnetic Locks for High-voltage Switchgear". The differences between this standard and JB/DQ2181-86 are:
a) Added a preface;
b) Revised the definitions of the three terms "unlock", "automatic reset" and "manual reset", and added the definition of the term "lock insurance";
e) Improved the use environment conditions;
d) Supplemented the model compilation method of derived electromagnetic locks, electromagnetic locks used as door locks and humid tropical electromagnetic locks; e) Redefined the power frequency test voltage value and gave the corresponding altitude correction factor; f) Proposed the principle requirements for the mechanical strength of the outdoor electromagnetic lock housing; g) Added the test method of the lock insurance test of the electromagnetic lock with lock insurance function; h) In terms of temperature rise test, the relevant provisions of the electromagnetic lock that controls the conductive circuit with plug-in components have been deleted; 1) According to the new national standard, the contents of the damp heat test, mildew test, and salt spray test have been partially modified; j) The test method and qualified criteria for the rainproof test of outdoor electromagnetic locks have been clarified; k) The period of regular life test has been adjusted, and the period of regular temperature rise test has been supplemented; 1) The requirement of "simulated misoperation test" has been cancelled; m) In terms of factory test, the provisions of random testing of the insulation between the electromagnetic coils have been added. This standard shall be implemented from July 1, 1996. From the date of entry into force, this standard shall also replace JB/DQ2181-86. This standard is proposed and managed by the National Technical Committee for Standardization of High Voltage Switchgear. Drafting units of this standard: Shenyang High Voltage Switch Factory, Xi'an High Voltage Electrical Equipment Research Institute, Xi'an High Voltage Switch Factory Second Branch, Jiangshan City Switch Factory, Zhenjiang Electric Equipment Factory.
The main drafters of this standard are Yang Daju, Shen Yuxiu and Ke Zili. 1
1 Model drawing
Standard of the Machinery Industry of the People's Republic of China
General Technical Conditions for Electromagnetic Locks for High-voltage Switchgear JB/T 7827-1995
Replaces JB/DQ218186
This standard specifies the use environment conditions, product model compilation method and basic parameters, technical requirements, test methods, inspection rules, and marking, packaging, transportation and storage of electromagnetic locks for high-voltage switchgear (hereinafter referred to as electromagnetic locks). This standard applies to electromagnetic locks used to prevent electrical misoperation of high-voltage switchgear. 2 Referenced 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, and all standards will be revised. All parties using this standard should explore and use the possibility of the latest versions of the following standards. GB763—90
GB2421—89
GB/T2423.4—93
GB/T 2423.16-90
GB/T2423.17—93
GB/T2900.1--92
GB/T2900.20—94
GB/T5582—93
GB11022—89
JB911-66
3 Definition
Heating of AC high voltage electrical appliances during long-term operation Basic environmental test procedures for electrical and electronic products General provisions Basic environmental test procedures for electrical and electronic products Test Db: Alternating damp heat test method
Electric Basic environmental test procedures for electrical and electronic products: Test J: Mildew test method
Basic environmental test procedures for electrical and electronic products Test Ka: Salt spray test method
Electrical terminology Basic terminology
Electrical terminology High-voltage switchgear
Pollution migration level of external insulation of high-voltage power equipment
General technical conditions for high-voltage switchgear
Electrical clearance and creepage distance of low-voltage electrical appliances for general industry This standard adopts the definitions of terms. In addition to the provisions of GB/T2900.1 and GB/T2900.20 and other standards, the following terms are also defined. Electromagnetic lock
An electrically controlled mechanical interlocking device that prevents electrical misoperation of high-voltage switchgear. 3.2 Automatic reset
The electromagnetic lock has the function of automatically returning the lock bolt to the locked position after unlocking the locked object. 3.3 Manual reset
The electromagnetic lock has the function of manually returning the lock bolt to the locked position after unlocking the locked object. 3.4 Manual unlocking
The electromagnetic lock can be unlocked with the help of special tools when the electromagnet coil is not energized. 3.5 Locking insurance
After the electromagnetic lock is locked, even if the locked object meets the unlocking conditions, it can only be unlocked with the help of special tools. 4
Environmental conditions for use
4.1 Indoor electromagnetic lock
a) Ambient air temperature
Approved by the Ministry of Machinery Industry on November 24, 1995
Implemented on July 1, 1996
Upper limit: +40℃;
JB/T7827-1995
Lower limit: -10℃ in general areas, -25℃ in high-cold areas. b) Altitude
is divided into 1000, 2000, 3000m
e) Humidity
Recommended relative humidity: daily average value is not more than 95%, monthly average value is not more than 90%. When the temperature drops sharply during the high humidity period, dew may occur. d)
The air pollution level is level 0, level I or level I in GB/T5582. The specific level is specified by the product technical conditions. There is no frequent severe vibration.
4.2 Outdoor electromagnetic lock
a) Ambient air temperature
Upper limit: +40℃;
Lower limit: -30℃ in general areas, -40℃ in high-cold areas. Altitude
is divided into 1000, 2000, 3000m.
The influence of condensation or rain should be considered.
The air pollution level is Class I, Class I or Class II in GB/T5582. The specific level is specified by the product technical requirements. Product model compilation method and basic parameters
Product model compilation method
Wet tropical type
(Left-side installation, indicated by the first capital letter Z of the Chinese pinyin of the word "left") (Right-side installation, indicated by the first capital letter Y of the Chinese pinyin of the word "right") M
(Door lock, indicated by the first capital letter M of the Chinese pinyin of the word "door") MZ (Door lock installed on the left, indicated by the first capital letter MZ of the Chinese pinyin of the two words "door left") MY
(Door lock installed on the right, indicated by the first capital letter MY of the Chinese pinyin of the two words "door right") Derived, use capital English letters ABC. to indicate the design number, and use Arabic numerals 1, 2, 3, **· to indicate (N (for indoor use, indicated by the first capital letter N of the Chinese pinyin of the word "inside") w
(For outdoor use, use the first capital letter W of the Chinese pinyin of the word "outside") The first capital letter of the Chinese pinyin of the word "lock"||tt ||The first capital letter of the Chinese Pinyin for the word "electricity"
Note; the so-called left-side installation or right-side installation refers to the installation position corresponding to the person facing the locked object. When the installation position of the electric lock on the locked object is on the left side of the person facing, it is left-side installation; otherwise, it is right-side installation. 5.2 Rated voltage
The rated voltage of the electromagnetic lock should be selected from the following values: AC (50Hz): 220V;
DC: 24, 48, 110, 220V.
Note: DC 24V should be used as little as possible.
Technical requirements
JB/T7827-1995
The lock bolt of the electromagnetic lock should be an indirect action type. If the cross-section of the lock bolt is circular, the diameter of the lock bolt for indoor electromagnetic locks shall not be less than 9mm, and the diameter of the lock bolt for outdoor electromagnetic locks shall not be less than 12mm. The strength of the lock bolt and the length of the lock bolt inserted into the lock hole shall meet the requirements of the locked object. 6.2
The electromagnetic lock shall have an indication device to indicate whether unlocking is allowed. The bolt may also have a structure with an automatic reset function. The lock bolt of the electromagnetic lock shall have a manual reset function. According to user needs, the electromagnetic lock shall have the function of keeping the lock bolt in the locked position. The electromagnetic lock shall be able to be manually released.
If the user needs it, the electromagnetic lock shall have the function of locking insurance. The electrical clearance and hysteresis distance of the electromagnetic lock shall comply with the provisions of JB911. All ferrous metal parts shall have anti-corrosion measures (except stainless steel parts). Antifreeze grease shall be used for electromagnetic locks used in high-cold areas. The electromagnetic lock shall be able to work reliably at 85%110% of the rated voltage. The insulation of the electromagnetic lock shall be able to withstand the power frequency test voltage specified in Table 1. Table
DC 24, 48
DC 110, 220AC 220
1min power frequency test voltage (effective value)
In the electromagnetic lock, the inter-turn insulation of the electromagnet coil should be able to withstand the following AC test voltage for 1min: AC line: 3.5 times the rated voltage,
DC line: 2.5 times the rated voltage,
The insulation of the electromagnetic lock must withstand the damp heat test. After the test: 6.13
The insulation resistance should not be less than the value listed in Table 2; it should be able to withstand the power frequency test voltage specified in Table 1. b)
DC 24, 48
AC 220, DC 110, 220
The allowable temperature rise of each heating element of the electromagnetic lock when the ambient air temperature is +40C should not exceed the provisions of Table 3. 6.14
The temperature rise of heating elements manufactured according to special standards shall comply with the relevant standards. Table
Heating elements and their insulation heat resistance gradeswwW.bzxz.Net
The surface of electromagnetic locks, the insulation heat resistance grade of which is the Y-level electromagnetic lock, the insulation heat resistance grade of which is the A-level electromagnetic lock, the insulation heat resistance grade of which is the E-level electromagnetic lock, the insulation heat resistance grade of which is the B-level interlocking contact and terminal contact part
+40C allowable temperature rise
Outdoor electromagnetic locks should have good rainproof performance, and their casing should have sufficient mechanical strength. K
JB/T7827—1995
6.16The design of the electromagnetic lock structure should consider the elimination of internal condensation, and the outdoor electromagnetic lock should also prevent sand and dust from entering. 6.17 The replacement type electromagnetic lock should have moisture-proof performance; the humid tropical type electromagnetic lock should have moisture-proof, anti-wet and anti-salt spray performance. 6.18 The electromagnetic wires of ordinary and mixed-zone electromagnetic locks shall be moisture-proof, mildew-proof and salt-fog-proof. 6.19 The installation dimensions of electromagnetic locks of the same model shall be consistent and the wearing parts shall be interchangeable. Test method
, general inspection
Carry out the following inspections according to product drawings and technical conditions: a)
appearance, external dimensions, installation dimensions and lock bolt stroke; b)
electrical inter-ohm and leakage distance;
others.
7.2 Operation test
Carry out the following operations on the fully assembled product: a)
30 times at 100% rated voltage;
10 times at 85% rated voltage;
10 times at 110% rated voltage.
During the test, the electromagnetic lock shall act flexibly and correctly without any jamming phenomenon, and the indicating device shall indicate normally. 7.3 Life test
The electromagnetic lock, when fully assembled, shall be able to withstand a life test of 10,000 operations, including: 8,000 tests alone; 2,000 tests after being assembled with the matching locking object (such as a manual operating mechanism, etc.). b) The
test is 2,000 times as a cycle. Each cycle includes 50 operations at 85% of the rated voltage, 1,900 operations at 100% of the rated voltage, and 50 operations at 110% of the rated voltage. No adjustment is allowed in each cycle, but lubrication is allowed according to the product installation and operating instructions. Slight adjustments are allowed between every two cycles (such as adjusting assembly dimensions, tightening screws, etc.), but no trimming is allowed. The operating frequency is limited to the temperature rise of the electromagnet coil not exceeding the value specified in Table 3. During the test, no refusal to operate, malfunction, or unreliable locking shall occur, and the matching manual operating mechanism shall be separated and combined in place. After the entire test, no damage that prevents continued normal operation shall occur. 7.+Unlocking test
When the electromagnetic lock is not energized, perform 10 unlocking operations, and each time it should be able to unlock smoothly. 7.5 Locking insurance test
Electromagnetic locks with locking insurance function should be subject to 5 locking insurance tests. During each test, the lock can only be unlocked smoothly with the help of special tools when the locked object is capable of unlocking. 7.6 Withstand voltage test
7.6.1 Power frequency withstand voltage test
The test voltage and pressure application time shall be in accordance with the provisions of 6.11, and the voltage application parts are: a) between the conductive part and the shell (to the ground); b) between the disconnected contacts of the same pole.
During the test, if no insulation breakdown or surface flashover occurs, the test is considered to be qualified. For electromagnetic locks intended to be used at an altitude higher than 1000m, it is recommended that the test voltage of the power frequency withstand voltage test be increased by 1% for every 100m increase in altitude. 7.6.2 Turn-to-turn insulation test of the electromagnet coil The test voltage and pressure-applying time shall comply with the provisions of 6.12. The test method shall comply with the provisions of 7.1.10 of GB11022. 7.7 Temperature rise test
After the conductive circuit of the electromagnetic lock is continuously energized for 1 minute at the rated voltage, the temperature rise of each heating element shall be measured immediately, and the value shall not exceed the provisions of 6.14.
JB/T7827—1995
6.16 The design of the electromagnetic lock structure shall consider the elimination of internal condensation, and the outdoor electromagnetic lock shall also prevent sand and dust from entering. 6.17 The electromagnetic lock of the replacement type shall have moisture-proof performance; the electromagnetic lock of the humid tropical type shall have moisture-proof, mildew-proof and salt spray-proof performance. 6.18 The electromagnetic wire of the ordinary type and the mixed tropical type electromagnetic lock shall have moisture-proof, mildew-proof and salt spray-proof performance. 6.19 The installation dimensions of the electromagnetic lock of the same model shall be consistent, and the wearing parts shall be interchangeable. Test method
, general inspection
Carry out the following inspections according to product drawings and technical conditions: a)
Appearance, overall dimensions, installation dimensions and lock bolt stroke; b)
Electrical inter-ohm and creepage distance;
Others.
7.2 Operation test
Carry out the following operations on the fully assembled product: a)
30 times at 100% rated voltage;
10 times at 85% rated voltage;
10 times at 110% rated voltage.
During the test, the electromagnetic lock should move flexibly and correctly without sticking, and the indicating device should indicate normally. 7.3 Life test
The electromagnetic lock, when fully assembled, shall be able to withstand a life test of 10,000 operations, including: 8,000 tests alone; 2,000 tests after being assembled with the matching locking object (such as a manual operating mechanism, etc.). b) The
test is 2,000 times as a cycle. Each cycle includes 50 operations at 85% of the rated voltage, 1,900 operations at 100% of the rated voltage, and 50 operations at 110% of the rated voltage. No adjustment is allowed in each cycle, but lubrication is allowed according to the product installation and operating instructions. Slight adjustments are allowed between every two cycles (such as adjusting assembly dimensions, tightening screws, etc.), but no trimming is allowed. The operating frequency is limited to the temperature rise of the electromagnet coil not exceeding the value specified in Table 3. During the test, no refusal to operate, malfunction, or unreliable locking shall occur, and the matching manual operating mechanism shall be separated and combined in place. After the entire test, no damage that prevents continued normal operation shall occur. 7.+Unlocking test
When the electromagnetic lock is not energized, perform 10 unlocking operations, and each time it should be able to unlock smoothly. 7.5 Locking insurance test
Electromagnetic locks with locking insurance function should be subject to 5 locking insurance tests. During each test, the lock can only be unlocked smoothly with the help of special tools when the locked object is capable of unlocking. 7.6 Withstand voltage test
7.6.1 Power frequency withstand voltage test
The test voltage and pressurization time shall be in accordance with the provisions of 6.11, and the voltage application parts are: a) between the conductive part and the shell (to the ground); b) between the disconnected contacts of the same pole.
During the test, if no insulation breakdown or surface flashover occurs, the test is considered to be qualified. For electromagnetic locks intended to be used at an altitude of more than 1000m, the test voltage of the power withstand voltage test is recommended to be increased by 1% for every 100m increase in altitude. 7.6.2 Turn-to-turn insulation test of the electromagnetic coil The test voltage and pressurization time shall be in accordance with the provisions of 6.12. The test method is in accordance with 7.1.10 of GB11022. 7.7 Temperature rise test
After the conductive circuit of the electromagnetic lock is continuously energized at the rated voltage for 1 minute, the temperature rise of each heating element is measured immediately. The value should not exceed the value specified in 6.14.
JB/T7827-1995
Ordinary electromagnetic lock: 7.1~7.8 and 7.12; a)
b) Humid and tropical electromagnetic lock: the items specified in 7.1~7.10 and 7.12; e) Electromagnetic coil of electromagnetic lock: the items specified in 7.8~7.11. 8.2 Factory test
8.2.1 Products must be inspected and qualified by the quality inspection department of the manufacturer before they can be shipped. 8.2.2 Factory test items are the items specified in item a of 7.1, 7.2, 7.4, 7.5 and 7.6. Note: Among them, the locking insurance test of 7.5 is only carried out on electromagnetic locks with locking insurance function; the distance insulation test of the electromagnetic coil of 7.6.2 can be sampled, and 5% of each batch shall be sampled, but not less than three. 9
Marking, packaging, transportation and storage
Product marking
Each electromagnetic lock shipped out of the factory shall have a nameplate, which shall indicate: 9.1.1
Manufacturer name or trademark;
Product model and name;
Rated voltage and power nature (AC or DC); Factory number:
Manufacture year.
The electromagnetic coil of the electromagnetic lock shall have a nameplate. The nameplate shall indicate: Rated voltage and power nature (AC or DC); Wire brand and specification:
Massive number;
DC resistance value at 20℃.
The nameplate shall be made of materials that are not easily corroded by nature, and the words and symbols shall be clear and durable. 9.2 Packaging
9.2.1 The packaging shall ensure that the product will not be damaged, deformed, lost, damp or corroded during transportation and storage. 9.2.2 The packaging box should be accompanied by a product certificate, product installation and use instructions and a packing list. 3 The packaging box should have packaging and transportation icons, such as "Handle with care" and "Avoid moisture". 9.2. 3
9.3 Transportation
The packaging of the electromagnetic lock should be suitable for loading and unloading and transportation requirements. 9.4 Storage
The electromagnetic lock should be stored in a well-packed state, and the storage place should be clean and dry. 6
People's Republic of China
Mechanical Industry Standard
General Technical Conditions for Electromagnetic Locks for High Voltage Switchgear JB/T 78271995
Published and issued by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing
Postal Code 100044)
Number of words xXX, xXx
Format 880×1230
Sheet X/X
Edition X in xX month, 19XX
Printing X in XX month, 19XX
Number of prints 1-XXX
Price XXX.XX Yuan
XX-XXX
Mechanical Industry Standard Service Network: http://wwwJB.ac.cn66_8
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