Some standard content:
ICS29.18D
Machinery Industry Standard of the People's Republic of China
JB/T10428—2004
Poly-fanction protectors for transformers2004-03-12Published
2004-08-01Implementation
Published by the National Development and Reform Commission of the People's Republic of ChinaForeword
Scope.…
2Specification application documents
3Term definitions,
4Product type and
5Technical requirements
Requirements
Application conditions
Contact wear and use 3. Life requirements
Insulation performance of protective device
Core characteristics of protective device
Deep casing protection level
Sealing + energy of protective device
Anti-vibration ability
Time-dependent solar radiation ability
6. Standard inspection principles.
Routine inspection items
Type demonstration items
Current requirements of product and test methods
Insulation performance test.
Waste point window and shutdown life test
Gas release detection test
Force setting test.
Force switch action reduction time determination test Temperature detector and temperature meter detection test
Deep protection level test of deep protection equipment Deep protection equipment anti-disassembly kinetic energy test
Solar light energy test
8 Marking, packaging, transportation and transfer
JB/T 10428—2004
This standard is formulated for the first time
JBrT10428—2004
The writing format of this standard shall follow GB/T1.1-2000 "Standardization Work Rules Part 1: Structure and Writing Rules of Standards 3. This standard is issued by China Machinery Industry Federation. This standard is under the jurisdiction of the National Transformer Standardization Technical Committee (SACTC44). The drafting unit of this standard is: Transformer Research Institute. The main contributors to this standard are: New Chain, Decision Maker. i
1 Scope
Multifunctional protective device for transformer
JA/T 10428—2004
This standard defines the terms and definitions, product specifications, technical requirements, inspection rules, test methods, packaging, transportation and storage of multifunctional protective devices for transformers.
This standard is applicable to multifunctional protective devices (hereinafter referred to as protective devices) installed on standard power transformers with voltage levels of 35kV and below and rated capacities of 315kVA to 10000kVA. 2 Normative reference documents
The following documents are applicable to this standard only after being referenced by this standard. Clauses: For all dated referenced documents, any subsequent revisions or amendments are not applicable to this standard. However, the latest version of this document shall apply to all undated referenced documents, including the latest version of the standard, GB/T 19-2XK, GB/T 1905 Environmental Testing of Electrical Products Part 1: Testing Methods: Simulated Earth-centered Space Radiation IDEC 60-2-5:j975)
GB/2424.1415 Electrical engineering product environmental testing Part 2: Test method for radiation test in a room H box d:G0068.2-9:1975)
GB/12KK0.15-199 Electrical engineering terminology transformer, mutual inductor, filter:eyEC6H050-42[:1090TEC60050.321:1986,
GH4209 External protection level P code! (GB420%1993, egEC0529: [989[B/13837 Transformer production model compilation method 3 Terms and definitions
GH/T2900.1S) The following terms and definitions are applicable to this standard. 3.1
Transformer multi-function protection device poly-functionprotectursFortransformery A protection device for transformers is a protection device used for transformers. It combines the gas level release, power protection and temperature control of small transformers into a protective system. When the gas temperature in the transformer tank reaches a certain value, the gas contact of the protection device will act immediately: a warning signal is issued or the power supply of the power system is automatically cut off. 3.2
Contact capacity contactpower
The ability of an electrical contact to cut off current under a specified voltage. 1 Product model
The product model and designation shall comply with the requirements of 13/T3837, and the following provisions shall comply with the requirements of JB/T10428—2004
Example: The product model of a protective device with two-way valve is QYW-2, 5 Technical requirements
5.1 Basic requirements
5.t.1 The protective device shall comply with the requirements of this standard and be manufactured in accordance with the approved product drawings and technical documents. 5.1.2 The protective device shall be equipped with a device for taking in air, sampling oil, and releasing air; a floating plate for checking the oil level and the accumulated gas; and a wiring for the protective transfer lead. 5.2 Conditions of use
Ambient temperature: -45℃---50℃
Understandable working temperature; -45℃~-105℃ relative humidity; 20℃, not more than 95%;
Maximum allowable temperature of internal fluid: 120℃; Magnetic leakage of oil tank top: 20X10T; Working voltage (AC, rectified current>), 220V, 110V. Contact density and service life requirements
Under the working conditions specified in Table 1, the internal switch contacts of the protection device should be able to withstand less than 100 times of breaking and closing tests, and the switch contacts should have no damage after the test.
Resistance
Electrical conductivity
Internal resistance
220,
5.4 Protection device Insulation performance of the device
Gas detection contact capacity
Contact capacity of power switch
Contact capacity of constant resistorbzxZ.net
Power factor
2058-.1.6
Constant voltage
The connections between the protection device and the contacts to the ground should be able to withstand the working voltage V for 1 min. There should be no breakdown or flashover between the switch points. Other insulation should also be free of breakdown or flashover. 6.5 Action characteristics of protection device
5.5.1 When the gas accumulated in the transformer oil reaches 165ml, the protection device should be able to quickly send out an alarm signal, and the oil surface can be clearly seen: the gas volume difference does not exceed 10m3. 5.5.2 When the pressure in the transformer oil box rises to the specified value of the protection device pressure, the protection device will quickly send out a trip signal. The set pressure and the actual action force are within the requirements of Table 2. Table 2 sets the set pressure limit adjustment switch. TB/T10428—2004 5.5.3 When the internal pressure value of the transformer tank rises to the set pressure of the protection device, the action response of the protection device should not exceed the requirements of Table 3. 5.5.4 The setting temperature range of the thermostat inside the protection device is 3-120. Here, any value can be set according to the requirements of the transformer. When the humidity in the transformer oil layer reaches the specified value of the protection device, the contacts of the thermostat will be activated to issue a temporary alarm. When the set temperature range is 1, the deviation from the actual temperature when the contact is in action is greater than 4°C; when the set temperature range is 1°C, the deviation from the actual temperature when the contact is in action is less than 2°C. 5.5 The surface temperature indicator range of the protective device is 30~120°C (the temperature level of the protective device is 1.5°C). 5.6 The protection level of the protective device is generally 55°C if there is no special requirement. If there are special requirements, they shall be negotiated and determined when ordering. The sealing performance of the protective device is that when the finished product is filled with transformer oil, it can withstand the sealing test of 10Pa under the conditions specified in the table. When the transformer oil is filled with transformer oil, the high-pressure transformer oil can be replaced by air wet coal sweeping during the type test. Table 4 Test Type Test Type Test Type Test 58.Vibration resistance
Test intensity
Test time
The rated vibration rate is 41T2~-2031211 sine wave), the added inverse is 224g (g is the gravity added time. The switch contacts should not be exposed to
5.9 Radiation resistance
The extended surface (referring to the part exposed to the human air) should have the resistance to (B Section 2423.24 Test light truck A specified Solar radiation capacity
6 Inspection rules
Change test items
) Assembly and external control inspection: (according to 5.1) 3 Insulation fence test (according to 5.47
! Le force setting test (to 5.5.2):
d Gas range change internal inspection (Table 5.5.1! Constant temperature meter inspection according to 5.5.4, 5.5.5): [Compensation test ( 5.7.
6.2 Type test items
A/T10428-200
a: All routine tests,
! Contact capacity efficiency service life test (contact 5.3): d) Pressure switch action response time determination test (according to 5.5.3) d) Shell protection level test (according to 5.6%)
) Overload resistance test according to 5.9)
f) Anti-driving ability test (and new products for this test, according to 5.8) 6.9 Product type test regulations
After the old, the type test must be carried out: a) New product trial production
) When the design, process, material changes may cause product performance changes: ) Long-term suspension of production:
) Normal production of relays at least five years to carry out a type test. ) In other cases, new products need to have two units for type test. The product source is from a batch of products, and the number of units is less than 7. Test method
7.1 Insulation performance test
7.1.1 Test between contact terminals
Ground one contact: Then apply 2kT voltage between the contacts for 1min. There is no penetration. The contacts of each group of contacts are tested separately. 7.1.2 Contact terminal to ground test
Short-circuit all terminals and apply 2kV high frequency voltage to ground (case) for 1mis. No high breakdown or flashover is allowed.
7.2 Contact breakdown and service life test
According to 5.3 specification, the terminals are subjected to inductive load for a recommended period of time not more than 5×10s. When the circuit current in the DC circuit is adjusted to the working current at the working standard, the contact can be reliably opened and closed for less than 10%. There is no burning phenomenon on the contact surface and it is qualified.
If the contact is connected to the AC circuit, under the working voltage and current specified in 5.3, adjust the circuit parameters so that the power factor is less than 10. The contact opens and closes for no less than 1 time, and there is no burning phenomenon on the contact surface and it is qualified. - In this case, the protective cover can be installed on the part of the special test device filled with transformer oil, and then the transparent body of the transformer can be lowered. When measuring, open the test device and the lower part of the test device, and the oil in the transparent protective device will slowly drop (the outflowing oil is measured by the oil level), and the small slider floating on the corresponding side will drop with the oil level. When the oil level drops to the surface of the float, the large float will start to move down: when the large float reaches the positioning point, the magnetic field in the large float will attract the tongue at the bottom of the cavity, and the oil discharge door will be closed, and the oil in the empty cylinder will be released as gas. This volume shall comply with the provisions of 5.5.1: 7.4 Force setting test
The protective device shall be equipped with a special test device for the test: adjust the pre-set time, and slowly fill the test bag with compressed air. When the switch contacts of the protective device are subjected to force, take the value of the dynamometer according to the actual situation. The deviation between this value and the set pressure value shall comply with the provisions of 55.2.
7.5 Determination test of action response time of pressure switch Install the protection device in the special test equipment and test the equipment and instrument. Adjust the pressure drop value. Use pressure sensor, automatic recorder or other instruments to test. When the internal pressure of the protection device is adjusted, the response time should meet the requirements of 5.53. 7.6 Testing test of thermostat and temperature meter
JR/T10428—2004
Install the protection device in the test equipment: (or in the case of steam, non-filled Fully charge the transformer, heat the transformer oil, adjust the thermostat setting value, record the temperature with a standard water thermometer (turn to 0.1 level), and when the thermostat contact is activated, immediately record the reading of the standard water thermometer (i.e. the actual temperature of the agent and the reading of the protection device dial. The difference between the temperature value of the thermostat and the thermometer and the actual temperature of the oil is calculated according to the specifications of 5.4 and 5.5.5. Note: The standard value range of diameter is between 69°C and 100°C. Based on this range, the internal type measuring disk is used. The protection level test of the protective cover of the protection device is completed according to the specifications of GB4208. 7.8 Vibration resistance test of protective equipment During the test, apply pulses similar to F-sine waves, with an acceleration of (2g4g) ± 1, a duration of 1ms-2m6, a pulse frequency of 4h7~20Hz, and a continuous impulse of no less than 1000 times. After the test, the protective equipment has no deformation or damage, and the switch contacts have no malfunction. 7.9 Vibration resistance test According to the provisions of GH Hall 2424.14, the test is carried out. 8.1 There is a clear sound on the protective shell of the protective equipment. The following items shall be marked on the brand: a) Name of manufacturer:
b) Product type:
e) Product name:
d) Standard code:
c) Product number:
f) Contact capacitance:
: Date of manufacture,
8.2 When the protection device is shipped, it shall be accompanied by:
) Installation and operation manual:
b) Product certificate of conformity
) Routine test report:
Packing list,
8.3 The packaging requirements of the protection device shall comply with the provisions of GB/T19. 8.4 The protection device shall be placed in a clean place to prevent dust and other dirt from entering the protection device. 53. Under the specified working voltage and current, adjust the circuit parameters to make the efficiency factor less than 10. The contact opens and closes for no less than 1 time, and there is no burning phenomenon on the contact surface. - In this case, the effective flow test
7.3 Gas release test
Install the protective cover on the part of the special test equipment filled with transformer oil, and then cut the transformer into pieces. When measuring, open the test device and the lower part of the effective valve, the oil convex in the transparent protective device slowly descends (the outflowing oil is measured by the core and the core), and the small slider floating on the corresponding side follows the oil level. When the oil level drops to the surface of the float, the large float starts to move down: when the large float reaches the fixed position, the magnetic field in the large float will attract the tongue at the bottom of the cavity, and the oil discharge valve will be closed immediately, and the oil in the empty cylinder will be released as gas. This volume is in accordance with the provisions of 5.5.1: 7.4 Force setting test
The protective device is installed with the special test device: adjust the time, slowly fill the test bag with compressed air, and when the protective device is subjected to the force switch contact, take the value of the dynamometer according to the situation, and the deviation between this value and the set pressure value should be in accordance with the provisions of 55.2.
7.5 Determination test of action response time of pressure switch Install the protection device in the special test equipment and test the equipment and instrument. Adjust the pressure drop value. Use pressure sensor, automatic recorder or other instruments to test. When the internal pressure of the protection device is adjusted, the response time should meet the requirements of 5.53. 7.6 Testing test of thermostat and temperature meter
JR/T10428—2004
Install the protection device in the test equipment: (or in the case of steam, non-filled Fully charge the transformer, heat the transformer oil, adjust the thermostat setting value, record the temperature with a standard water thermometer (turn to 0.1 level), and when the thermostat contact is activated, immediately record the reading of the standard water thermometer (i.e. the actual temperature of the agent and the reading of the protection device dial. The difference between the temperature value of the thermostat and the thermometer and the actual temperature of the oil is calculated according to the specifications of 5.4 and 5.5.5. Note: The standard value range of diameter is between 69°C and 100°C. Based on this range, the internal type measuring disk is used. The protection level test of the protective cover of the protection device is completed according to the specifications of GB4208. 7.8 Vibration resistance test of protective equipment During the test, apply pulses similar to F-sine waves, with an acceleration of (2g4g) ± 1, a duration of 1ms-2m6, a pulse frequency of 4h7~20Hz, and a continuous impulse of no less than 1000 times. After the test, the protective equipment has no deformation or damage, and the switch contacts have no malfunction. 7.9 Vibration resistance test According to the provisions of GH Hall 2424.14, the test is carried out. 8.1 There is a clear sound on the protective shell of the protective equipment. The following items shall be marked on the brand: a) Name of manufacturer:
b) Product type:
e) Product name:
d) Standard code:
c) Product number:
f) Contact capacitance:
: Date of manufacture,
8.2 When the protection device is shipped, it shall be accompanied by:
) Installation and operation manual:
b) Product certificate of conformity
) Routine test report:
Packing list,
8.3 The packaging requirements of the protection device shall comply with the provisions of GB/T19. 8.4 The protection device shall be placed in a clean place to prevent dust and other dirt from entering the protection device. 53. Under the specified working voltage and current, adjust the circuit parameters to make the efficiency factor less than 10. The contact opens and closes for no less than 1 time, and there is no burning phenomenon on the contact surface. - In this case, the effective flow test
7.3 Gas release test
Install the protective cover on the part of the special test equipment filled with transformer oil, and then expand the penetration of the transformer body to the standard transformer. When measuring, open the test device and the lower part of the effective valve, the oil convex in the transparent protective device slowly descends (the outflowing oil is measured by the core and the core), and the small slider floating on the corresponding side follows the oil level. When the oil level drops to the surface of the float, the large float starts to move down: when the large float reaches the fixed position, the magnetic field in the large float will attract the tongue at the bottom of the cavity, and the oil discharge valve will be closed immediately, and the oil in the empty cylinder will be released as gas. This volume is in accordance with the provisions of 5.5.1: 7.4 Force setting test
The protective device is installed with the special test device: adjust the time, slowly fill the test bag with compressed air, and when the protective device is subjected to the force switch contact, take the value of the dynamometer according to the situation, and the deviation between this value and the set pressure value should be in accordance with the provisions of 55.2.
7.5 Determination test of action response time of pressure switch Install the protection device in the special test equipment and test the equipment and instrument. Adjust the pressure drop value. Use pressure sensor, automatic recorder or other instruments to test. When the internal pressure of the protection device is adjusted, the response time should meet the requirements of 5.53. 7.6 Testing test of thermostat and temperature meter
JR/T10428—2004
Install the protection device in the test equipment: (or in the case of steam, non-filled Fully charge the transformer, heat the transformer oil, adjust the thermostat setting value, record the temperature with a standard water thermometer (turn to 0.1 level), and when the thermostat contact is activated, immediately record the reading of the standard water thermometer (i.e. the actual temperature of the agent and the reading of the protection device dial. The difference between the temperature value of the thermostat and the thermometer and the actual temperature of the oil is calculated according to the specifications of 5.4 and 5.5.5. Note: The standard value range of diameter is between 69°C and 100°C. Based on this range, the internal type measuring disk is used. The protection level test of the protective cover of the protection device is completed according to the specifications of GB4208. 7.8 Vibration resistance test of protective equipment During the test, apply pulses similar to F-sine waves, with an acceleration of (2g4g) ± 1, a duration of 1ms-2m6, a pulse frequency of 4h7~20Hz, and a continuous impulse of no less than 1000 times. After the test, the protective equipment has no deformation or damage, and the switch contacts have no malfunction. 7.9 Vibration resistance test According to the provisions of GH Hall 2424.14, the test is carried out. 8.1 There is a clear sound on the protective shell of the protective equipment. The following items shall be marked on the brand: a) Name of manufacturer:
b) Product type:
e) Product name:
d) Standard code:
c) Product number:
f) Contact capacitance:
: Date of manufacture,
8.2 When the protection device is shipped, it shall be accompanied by:
) Installation and operation manual:
b) Product certificate of conformity
) Routine test report:
Packing list,
8.3 The packaging requirements of the protection device shall comply with the provisions of GB/T19. 8.4 The protection device shall be placed in a clean place to prevent dust and other dirt from entering the protection device. 5
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