JB/T 9688-1999 Rectification equipment for high voltage electrostatic precipitator
Some standard content:
JB/T9688-1999
This standard is a revision of ZBK46008.1-88 "Rectifier Equipment for High Voltage Electrostatic Precipitators". According to the provisions of GB/T1.1-1993, necessary editorial modifications have been made to this standard. The main technical contents of the standard (scope of application, ambient conditions, performance requirements, etc.) have not changed.
This standard replaces ZBK46008.1-88 from the date of implementation. This standard is proposed and managed by the National Power Electronics Standardization Technical Committee. The drafting units of this standard are: Xi'an Power Electronics Technology Research Institute, Shanghai Resistor Factory. The main drafters of this standard are: Li Jihe, Lu Di, and Zhu Huawei. This standard was first issued in 1977 and revised for the first time in 1988. This standard is interpreted by the National Power Electronics Standardization Technical Committee. 121
Machinery Industry Standard of the People's Republic of China
Rectifying equipment for high voltage electrostatic precipitator
Rectifying equipment for high voltage electrostatic precipitator1 Scope
JB/T 9688--1999
Replaces ZBK46008.1-88
This standard applies to single-phase full-wave high voltage rectifier equipment for electrostatic precipitator, which provides high voltage DC power supply for dust removal, mist removal, tar removal, dehydration and other purposes.
This standard only puts forward requirements for the particularity of high voltage rectifier equipment, while the common parts with other semiconductor power converters shall comply with the relevant provisions of GB/T3859.1.
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 all valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards. GB/T3859.1-1993 Basic requirements for semiconductor converters (eqvIEC60146-1-1: 1991) GB/T3859.2-1993 Application guidelines for semiconductor converters (eqvIEC60146-1-2: 1991) JB/T4276-1999
JB/T5845-1991
3 Model spectrum
3.1 Product model
Technical conditions for converter product packaging
Test method for rectifier equipment for high-voltage electrostatic dust removal The model complies with the provisions of the power electronics major on the compilation of relevant models. 3.2 Model spectrum
3.2.1 Rated output DC voltage level
The rated output DC voltage (average value) of the high-voltage rectifier equipment shall be selected from the following values (kV): 40, (50), 60, (66), 72, (80), 90, 100, 120, 150. Note: The values in brackets are not recommended.
3.2.2 Rated output DC current level
The rated output DC current (average value) of the high-voltage rectifier equipment shall be selected from the following values (A): 0.05, 0.1, 0.2, 0.4, 0.6, (0.7), 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0. Note: The values in brackets are not recommended.
4 Technical requirements
4.1 Conditions of use
a) The altitude shall not exceed 1000m. If the altitude is higher than 1000m, make corresponding amendments according to Appendix B of GB/T3859.2-1993; b) For control cabinets, the ambient temperature shall be 10-+40℃; for high-voltage silicon rectifier transformers, the ambient temperature shall not be higher than +40℃ and not lower than Approved by the State Machinery Industry Bureau on August 6, 1999 122
Implementation on January 1, 2000| |tt||The condensation point temperature specified by the transformer; JB/T9688-1999
c) The maximum relative humidity of the air is 90% (equivalent to air 20±5℃); d) There is no severe vibration and impact, and the vertical inclination does not exceed 5%; e) There is no conductive explosion dust at the operating location, and there is no gas or vapor that corrodes metal and damages insulation; f) The continuous fluctuation range of the input AC voltage does not exceed ±10% of the rated value; g) The frequency fluctuation range of the input AC voltage does not exceed ±2%. Note: If the high-voltage rectifier equipment is required to be used under special working conditions. The user should propose it when ordering and negotiate with the manufacturer. 4.2 Voltage regulation method
Use a crystal tube to regulate the voltage on the grid side of the rectifier transformer. 4.3 Load level
The load level is "I" level (100% rated output current, continuous). 4.4 Rated DC output voltage
The rated DC output voltage of the high-voltage rectifier equipment shall comply with the requirements of 2.2.1 and shall also be equipped with taps at 10% and 20% below the rated DC output voltage. When the load is resistive, the rated value is allowed to be reduced by 20%. 4.5 Efficiency and power factor of the equipment
Efficiency ≥ 80%; power factor ≥ 0.8.
4.6 Electrical insulation strength of high-voltage rectifier equipment 4.6.1 The transformer shall comply with the provisions of its standards, and the breakdown voltage shall not be less than 40kV/2.5mm. 4.6.2 After the rectifier transformer is filled with oil for 24 hours, the high-voltage circuit (excluding the silicon stack) shall conduct a withstand voltage test of the external construction frequency AC voltage on the low-voltage winding, iron core and box shell. The allowable value of the test voltage is shown in Table 1. It lasts for 1 minute and there should be no insulation breakdown, flashover or abnormal sound. Table 1
Rated output voltage level
(50)
Test voltage (RMS value)
4.6.3 The low-voltage windings and reactor windings of the rectifier transformer shall be subjected to a withstand voltage test of the external power frequency AC voltage to the casing. The test voltage is 2000V (RMS value) and lasts for 1 minute. There shall be no insulation breakdown, flashover or abnormal sound. 4.6.4 The insulation between the windings of the rectifier transformer shall be subjected to a withstand voltage test of the double frequency induced voltage. The test frequency is twice the power frequency, and the RMS value of the test voltage is 1.5 times the rated input AC voltage. It lasts for 1 minute. There shall be no insulation breakdown, flashover or abnormal sound. 4.6.5 The control cabinet shall be subjected to a withstand voltage test. When the working voltage of the components is greater than 90V, the RMS value of the test voltage to the cabinet shell is 2000V. When the working voltage of the components is less than 90V, the RMS value of the test voltage to the cabinet shell is 1000V. After 1 minute, there should be no insulation breakdown, flashover or abnormal sound. 4.7 Temperature rise of each part of the equipment
When the rated DC output current and DC output voltage are 100% and 70% of the rated value, the temperature rise of the equipment shall not exceed the values listed in Table 2.
Device or part
Transformer, reactor winding
High-voltage rectifier circuit
Fast fuse and wire screw fixing place
Thyristor shell
Wire screw fixing place
Resistor element
Plastic insulated wire
Rubber insulated wire
Varnished cloth insulated wire
JB/T9688-1999
Limit temperature rise, K
The highest temperature rise of the upper oil surface is 40
According to relevant standards Or product technical conditions
45 (bare copper)
55 (with tin or cadmium plating)
70 (with silver plating)
185 (surface)
25 (empty space 30mm from the surface)
Measurement method
Resistance method
Thermometer method
Thermocouple method, thermometer method or other methods
Note: Transformer and reactor windings are of Class A insulation, and other levels can be changed accordingly. Remarks
High-voltage rectifier transformers and high-voltage When the pressure silicon
rectifier components are assembled, the
limit temperature rise shall be based on the high voltage rectifier circuit
4.8 The equipment shall operate stably under the rated DC output voltage and rated DC output current (the various overcurrent protection devices shall be adjusted according to the design requirements).
4.9 Use an oscilloscope to check the range of its conduction angle change, which shall meet the design requirements, and the waveform shall be smooth and symmetrical. 4.10 When the high voltage silicon rectifier transformer or equipment is input with AC voltage, its output voltage shall not be less than 1.5 of the rated DC voltage. The equipment should not have any abnormal phenomenon after running at no load for 1 minute at the rated load.
4.11 The load is allowed to be completely short-circuited, and no component in the equipment should be damaged, and it should be able to trip and sound an alarm. 4.12 The equipment is allowed to operate at 150 flashovers per minute. If an arc occurs in the dust collector load, it should be able to extinguish the arc quickly, and the equipment should not have any faults.
4.13 The equipment is not allowed to run at no load, but the load should occasionally open the circuit momentarily, which should not cause any faults. 4.14 The equipment should withstand the impact of starting and stopping under rated load conditions. 4.15 The equipment should withstand the impact of starting and stopping under no-load and short-circuit conditions, and the impact of load and no-load conversion, and load and short-circuit positive phase conversion.
4.16 The manufacturing quality of the equipment cabinet, the surface processing of parts, the main circuit connection, the secondary wiring and the installation of electrical components shall all comply with the relevant technical requirements of GB/T3859.1: 4.17 Under the condition that the user unit complies with the storage, use, installation and operation rules, within 12 months from the date of installation, but not more than 18 months from the date of shipment from the manufacturer, if the product is damaged and cannot work normally due to poor manufacturing quality, the manufacturer shall repair or replace parts for the user unit free of charge.
5 Test method
See the provisions of JB/T5845.
Inspection rules
JB/T9688--1999
Equipment tests are divided into factory tests and type tests. In principle, both tests are carried out in the factory using simulated electric fields. However, if the performance of the factory products can be guaranteed to meet the use requirements, they can also be carried out using resistive loads or on-site. 6.1 Factory tests
Products must be tested one by one before leaving the factory. After passing the factory tests, a product certificate should be issued. 6.2 Type test
Type test shall be carried out for high voltage rectifier equipment in any of the following cases: a) new products to be trial-produced;
b) when the design, process or materials used of the product change will affect the guaranteed performance of the product; c) when the product which is not produced frequently is produced again; .d) for mass-produced products, random test shall be carried out every five years, and no less than two units shall be tested for each batch: if one unit fails in one item during the test, it shall be allowed to return for retesting. If the retest still fails, the batch of products shall be considered as unqualified products and can only be produced after the defects are eliminated and the test is passed.
6.3 Test items
The factory test and type test items of the equipment are listed in Table 3. Table 3 Test items for high-voltage rectifier equipment
Withstand voltage test
Multiple frequency withstand voltage test
No-load test
Test items
Determination and calculation of power factor and power factor
Load test
Temperature rise test
Performance inspection of trigger device
Flashover test
Impact, short circuit and protection test
a) Negative power impulse test;
b) Open circuit impulse and short circuit impulse test of opening and closing the primary side of rectifier transformer ; c) Open circuit impact test and short circuit impact test of operating DC side high-voltage disconnector; d) Inspection of overload protection;
e) Short circuit and short circuit protection test;
f) Overvoltage test
General inspection
Type test
Export test
7 Marking, packaging, transportation and storage
7.1 Marking
JB/T9688-1999
Nameplates should be installed in obvious positions of the control cabinet, rectifier transformer and reactor of the equipment. The nameplate should indicate the following items: a) product model;
b) factory serial number;
c) rated AC voltage, V;
d) rated AC current, A;
e) rated frequency and number of phases; bzxz.net
f) rated output voltage, kV;
g) rated output current, A;
h) weight, kg;
i) manufacturing date;
i) manufacturer's name.
7.2 Packaging
7.2.1 Technical documents supplied with the product: a) product certificate;
b) product manual;
c) product set and spare parts list.
7.2.2 Product Packaging
Product packaging must comply with the provisions of JB/T4276, and should ensure that the product is not mechanically damaged during transportation and storage, and has rain and dustproof capabilities. The following signs should be marked on the outside of the packaging box: a) Product model, name and factory number; b) Product net weight and gross weight;
c) Name and address of the consignee:
d) Manufacturer's name and address;
e) Position mark "pcs" and the word "upward" written above the arrow and the lifting position mark; f) Package dimensions;
g) Package expiration date.
7.3 Transportation
During transportation, the product should not be subjected to severe vibration, impact or inversion. 7:4 "Storage
The product should not be exposed to the sun or rain, and should be stored in a warehouse with good air circulation, ambient medium temperature not less than 20°C, maximum relative humidity of 90% (equivalent to air temperature 20±5°C) and no corrosive gas. 1264. Storage
The product should not be exposed to the sun or rain, and should be stored in a warehouse with good air circulation, ambient medium temperature not lower than 20°C, maximum relative humidity of 90% (equivalent to air temperature 20±5°C) and no corrosive gas. 1264. Storage
The product should not be exposed to the sun or rain, and should be stored in a warehouse with good air circulation, ambient medium temperature not lower than 20°C, maximum relative humidity of 90% (equivalent to air temperature 20±5°C) and no corrosive gas. 126
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