JB/T 5348-1991 Basic technical requirements for DC choppers for traction
Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T 5348-1991
Basic Technical Conditions for DC Choppers for Traction Issued on 1991-06-28
Implementation on 1992-07-01 by the Ministry of Machinery and Electronics Industry of the People's Republic of China
Basic Technical Conditions for DC Choppers for Traction This standard adopts IEC411-4 "Direct Direct Converters for Vehicles (1986 Edition)" by reference. Subject Content and Scope of Application
This standard specifies the main technical parameters and test methods of DC choppers for traction. JB/T5348-1991
This standard applies to DC choppers (hereinafter referred to as choppers) used in the main circuit of traction vehicles, and can also be applied to choppers used as auxiliary power supplies on these vehicles. For vehicles with multiple power sources, this standard applies to the electrical devices that are powered by direct current. This standard does not apply to choppers for electric industrial vehicles and electric vehicles powered by batteries. 2
Referenced standards
GB3859
ZB K63 002
ZBK63003
JB4398
Use conditions
Normal use conditions
A is:
Semiconductor power converter
Electrical terminology
Converter
Basic environmental test procedures for electrical products Basic technical conditions for traction electrical appliances
Basic test methods for traction electrical appliances
Rules for electronic equipment for traction vehicles
Altitude does not exceed 1200m.
Test Db: Alternating damp heat test method
The ambient temperature is -25～+40, and the annual average temperature does not exceed +25. The average maximum relative humidity in the last month is 90% (the average maximum temperature of the month is not greater than +25℃). Corresponding to the locomotive and EMU, the required, lateral and lateral speeds have a positive gain of 1 to 50H2, and the width is not greater than A, A..
3.1.5 Maximum impact intensity:
One-way (vehicle travel direction)
"Insert straight line
When it is 110Hz
mm. When f is 10 to 50Hz
30m/sz
20m/ss
3.1.6 There are rain, snow and shock protection devices (electrical appliances that cannot be equipped with protective devices outside the car body should have the ability to resist rain, snow and wind and sand).
There are no gases and conductive dust blocks that are enough to corrode metals and destroy prohibited items in the air.3.1.7 There is no explosion hazard,
If the power supply is from the power grid, the input voltage is formed into a three-phase AC sine wave through 6-pulse rectification. If it is different from this waveform, it shall be determined by negotiation between the supply and demand parties.
Approved by the Ministry of Machinery and Electronics Industry on June 28, 1991 and implemented on July 1, 1992
JB/T5348-1991
3.1.9 Requirements for the peak and waveform of temporary overvoltages caused by external lightning intrusion or internal operation shall be determined by negotiation between the supply and demand parties. 3.1.10
Input voltage value shall be in accordance with the provisions of Table 1.
Battery
Minimum voltage
(400)
Rated voltage Ue
Note: The values in brackets are not recommended. It will not be used in new windings to be built in the future. 3.2
Special conditions of use
Maximum voltage
(720)
Special requirements for choppers used in gas coal mines, cold and tropical zones, high altitude areas and other special environments should also comply with the corresponding professional standards and be negotiated by the supply and demand parties. 4
Technical requirements
Rated voltage value
The rated value of the supply voltage is the rated voltage value of the chopper. Rated output current value
The rated current value of the load is the rated output current value of the new chopper. Under the specified operating conditions, the rated value allows continuous operation, an overload of 1.5 times allows operation for 2 hours, and an overload of 2 times allows operation for 1 minute. 4.3 Frequency
4.3. 1 Basic frequency, for multi-phase choppers, refers to the operating frequency of the phase chopper. 4.3.2 Synthetic frequency, for multi-phase (heavy) choppers, the input synthetic frequency is the product of the basic rated frequency and the number of phases; the output synthetic frequency is the product of the basic frequency and the number of phases.
4.4 On-ratio range
The on-ratio range shall meet 10% to 90% if there are no special requirements. If there are special requirements, it shall be agreed upon by the supply and demand parties. 4.5
Electrical clearance and creepage distance
The minimum electrical clearance and minimum creepage distance of the chopper device shall comply with the provisions of ZBK63002. The chopper shall be manufactured according to the drawings and process regulations approved by the prescribed procedures. The composition of the chopper
The chopper partbzxZ.net
is composed of the thyristor and the commutation element through which the main current passes. 5.2
Other components
The following links may be set up if necessary:
Follow-wheel link.
Blocking diode.
Main smoothing reactor.
Input filter.
6.1 Light load test
JB/T 53481991
This test is used to verify whether the connection of the new wave filter device is correct and whether the static control characteristics meet the specified requirements. During the test, the power supply voltage changes in the entire range, and its output voltage is measured to verify whether the signal transmission and control signal are correct. The output voltage should change smoothly without sudden changes. The selected load should be able to provide a current value not less than 0.1 times the rated output. 6.2 On-ratio test
This test is carried out under the conditions listed in Table 2 with the specified load. The minimum and maximum values of the output current are specified by the product technical conditions. Table
On-ratio a
Input voltage
Highest voltage
Lowest voltage
Where, T. .—The time for the current of the wave part to flow, mS. T
Output current (average value)
-cycle time of the new wave part, ms.
Note: For choppers with a rated frequency below 200-300Hz, the conduction ratio can be replaced by the ratio of the output voltage (average value) to the input voltage. 6.3 Reclosing test
This test is conducted under rated conditions, and the reclosing is conducted 5 times within the specified shortest time interval. If the device cannot be reconnected, it shall be regarded as a fault. The shortest time interval is specified by the product technical conditions (the corresponding protection link should be connected during the test). 6.4 Short-time interruption test of network voltage
This test is required for choppers and triggering devices powered by the grid. During the test, the chopper is in any working position under rated conditions. If the chopper components are not damaged and can be restarted, the test is considered to be qualified (the corresponding protection link should be connected during the test), and the interruption time is specified by the product technical conditions.
Commutation capacity test
This test should be carried out under the conditions of minimum input voltage and maximum output current. The maximum output current should be the peak current when the pulsation rate is the largest. The test lasts for 10s.
For power electronic devices such as GTO or GTR, other special conditions of this test are specified by the product technical conditions. 6.6 Output current and input voltage pulsation test 6.6.1 Output current pulsation test
The pulsation degree of the output current is specified by the extreme pulsation rate under the rated input voltage and rated load. It is a function of the average output current and the conduction ratio. The maximum value of the pulsation rate is determined by negotiation between the supply and demand parties. iRMH-i
iRMH+iRML
Where: -
Current extreme value pulse rate, %
×100-
·（2）
inMHLoad current peak value, A
ismLLoad current valley peak value, A
6.6.2 Input voltage ripple test
JB/T53481991
Powered by the grid, the input voltage ripple degree is specified by the ripple rate under the rated input voltage and rated load. The maximum ripple rate should not be greater than 20%.
UMH-UL
URMN+URAL
In the formula, μ is the voltage ripple rate, %
URMH---grid voltage peak value, V
UeML-grid voltage valley peak value, V
6.7 Power supply voltage fluctuation test
The new ripple device is in 3.1.10. Within the voltage variation range of Table 1, the chopper should start reliably and work normally. (3)
For urban traffic vehicle choppers, the audio noise level should not exceed 80dB. For industrial and mining electric locomotive choppers, if required by the user, it shall be carried out in accordance with the agreement between the supplier and the buyer. Unless otherwise agreed, the audio noise transmitted by the chopper shall be measured at a horizontal distance of 1m from the chopper housing.
3 Interference test
6.8.1 All contactors and relays on the vehicle shall operate in sequence, and no malfunction or damage shall be caused to the chopper trigger device and the main circuit. If there are other interference sources, the supplier and the buyer shall negotiate and determine in accordance with the provisions of Article 4.5.4.5 of GB3859. 6.8.2 The electromagnetic interference current generated by the chopper in actual operation shall not affect the communication and signal circuits. The details of this test shall be jointly agreed upon by the supplier and the buyer.
6.9 Temperature rise test
This test is carried out with rated load under the specified equivalent operating conditions. When the ambient temperature is +40°C, the allowable temperature rise limits of each part are shown in Table 3.
Parts name
Electrical contact surface connected with burst nails or potassium nails
Single-layer current coil
Soft connection
Insulating coil and conductive metal parts in contact with insulating materials
Brass or copper
Brass or copper (silver-plated at the contact)
Brass or copper (pot-plated at the contact)
Copper and aluminum
Copper (plated at the contact)
Class A insulation
Class E insulation
Class B insulation
Class F insulation
|H-class insulation
Temperature rise limit
Parts name
Screw fixing of pin busbar connected to semiconductor device
Remote connection of copper busbar
Return connection of aluminum busbar
Resistor element
Plastic insulated wire, rubber, insulated wire, varnished cloth insulated wire connected to power conductor deviceJB/T5348-1991
Continued Table 3
Tin or aluminum plating
Sugar plating
Air 30mm from the surface
Q.= Q, Pavs (Rje + Res + R) 40Where Q is the junction temperature of the component, ℃.
Pavs-average power loss of the component, W. Re—junction-to-case thermal resistance of the component, c/W.
Re—-contact thermal resistance of the component, ℃/W.
R, heat sink thermal resistance, ℃/W.
Q Limit temperature rise at the heat sink, K.
6.10 Control characteristic test
Temperature rise limit
This test should be carried out in combination with the traction motor. Since there are various types of traction motor control systems using new wave generators, and their control characteristics also vary accordingly, this test should be carried out in accordance with the following test items based on the characteristics of the product itself. 6.10.1 If it is a constant current starting chopper, a constant current starting test should be carried out. If the chopper can work at the predetermined constant current value, the test is considered to be qualified. 6.10.2 If the electric brake is a constant torque (or constant power) control, the chopper should be tested for constant torque (or constant power). If it can work at the predetermined constant value within the effective braking speed range, the test is considered to be qualified. 6.10.3 If there is regenerative braking, a regenerative load fluctuation test should be carried out. When the load fluctuates, the operation of the new wave generator should not show abnormal phenomena.
6.10.4 When there is no or insufficient regenerative load, the oscillator should be able to effectively limit the voltage and should not produce overvoltage that endangers electrical products. 6.10.5 If an abnormal situation occurs during the operation of the oscillator, such as overvoltage, undervoltage, overcurrent, commutation failure, etc., its protection link should be able to operate reliably. If necessary, it should also have an alarm and display device. After the fault is eliminated, it should be able to restart. 6.11 High temperature test
Under normal power supply conditions, the oscillator is placed in a high temperature box, and the temperature is gradually increased from the ambient temperature to +40±2℃. The heating time is not less than 0.5h, and it is maintained at +40±2℃ for 6h. At the end of this period, a performance test is carried out, which should meet the requirements of Articles 6.1 and 6.5. 6.12 Low temperature test
The chopper is placed in the test box without any voltage applied, and the temperature in the box is gradually reduced to -25±2℃. The cooling time is not less than 0.5h, and the temperature is kept at ~25±2℃ for 2h before the power is turned on. The chopper should meet the requirements of Articles 6.1 and 6.5. 6.13 Vibration and shock test
Under the alarm and shock conditions specified in Articles 3.1.4 and 3.1.5, the chopper should not cause mechanical damage, loose fasteners, and abnormal operation.
6.14 Short circuit test
JB/T53481991
The input voltage is 110% of the rated voltage, and the equivalent load is connected. The current flowing through it is the specified maximum value. After the chopper is powered on for 1min, the short-circuit contactor connected in parallel with the load is closed. The protection link should be able to clear the fault current, the chopper should not be damaged, and it should be able to restart after the short circuit is eliminated.
Moisture resistance test
The new chopper is in accordance with GB2423, 4. The test severity is as follows: high temperature 40C, test cycle 6d, the lower limit of relative humidity in the cooling stage shall not be less than 95% (for products with no obvious breathing effect, it is allowed to be not less than 85%). The insulation performance of the product after the test shall meet the following requirements. 6.15.1 The insulation resistance of the new chopper shall be qualified by the product technical conditions. 6.15.2 The withstand voltage of the chopper shall be able to withstand 85% of the value specified in Table 4 of Article 6.17, and there shall be no breakdown or flashover. 6.16 Insulation withstand voltage test
The insulation of the new chopper shall be able to withstand the AC sinusoidal 50Hz test voltage (effective value) specified in Table 4 for 1min, and there shall be no breakdown or flashover.
Rated voltage Ue
31~300
301~660
661~3000
In the main circuit with voltage greater than 600V, the protective circuit and the relevant parts of the control circuit with voltage less than 500V to ground
applied voltage
between the mutually insulated alternate parts and between the mutually insulated live parts to ground and between the mutually insulated live parts to ground and between the mutually insulated live parts to ground
live parts to ground
Test methods not specifically specified in this standard shall be carried out in accordance with the provisions of ZBK63003. 6.17
Test acceptance rules
7.1 The test of the new wave filter is divided into type test and inspection test. 7.2 Type test shall be carried out in the following cases. 7.2.1 When a new product is trial-produced.
Test voltage U
2.5Ue+2000
2.5Ue+2000
7.2.2 When the improvement of the structure, process or material of the product is sufficient to affect certain performances of the chopper, partial or full type tests shall be carried out. 7.2.3 For products that are regularly mass-produced, type tests or partial type tests shall be carried out every 3 to 5 years, and the test items shall be specified by the product technical conditions. 7.3 When carrying out the type tests of Articles 7.2.1 and 7.2.2, in principle, the number of tested products for each test item shall not be less than 2 units, and each type test item shall be qualified.
When carrying out the type test of Article 7.2.3, the tested products shall be drawn from the qualified products of the inspection test, at least 2 units. If both products fail to meet a certain requirement in the test, the batch shall be considered as unqualified. If one item of one unit fails, double the number of products should be taken for retesting. If one unit still fails, the batch shall be considered as unqualified. 7.4 Each product leaving the factory shall be inspected and tested by the manufacturer. Users can check whether the products leaving the factory meet the requirements of the technical conditions. If one item does not meet the requirements of the technical conditions, it shall be regarded as an unqualified product. 7.5 The items of type test and inspection test are shown in Table 5.6
General inspection
Light load test
Conduction ratio test
Donghe adjustment test
Grid voltage short-time interruption test
Commutation capacity test
Output current and input voltage pulsation test
Power supply voltage fluctuation test
Sound propagation test
Interference test
Temperature rise test
Control characteristic test
High retreat test
Low temperature Test
Vibration impact test
Short circuit test
Moisture resistance test
Insulation withstand voltage test
JB/T5348-1991
Type test
4.5, 4.6
6,6,1, 6,6.2
6,9,1, 6,9,2
6,11,1~6,11,5
Inspection test
4,5, 4,6
6.11.1~6.11.5
Due to the limitation of test conditions, some items of type test can be tested and assessed by loading according to the requirements of product technical conditions after consultation between the manufacturer and the user.
Marking, packaging, transportation and storage
The product should be marked in a conspicuous place:
Name,
Model:
Rated parameters;
Factory guide:
Standard number,
Weight;
Manufacturer name:
Year and month of manufacture.
If the product size is limited, only the model and parameters of the product can be marked. The packaging of the product should be able to prevent the product from getting damp or damaged during transportation. 8.2
Each product must be accompanied by a certificate of conformity when leaving the factory, and at least one instruction manual should be provided to each user. JB/T5348-1991
4 Under the condition that the user complies with the storage and use instructions of the product, within one year from the date of shipment from the manufacturer, if the product is damaged or cannot work normally due to poor manufacturing quality8.4
, the manufacturer shall promptly repair or replace parts for the user free of charge. Additional remarks:
This standard was proposed and managed by the Xiangtan Traction Electrical Equipment Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Xiangtan Traction Electrical Equipment Research Institute. The main drafters of this standard were Yi Lanlao and Li Genliang. oo
People's Republic of China
Mechanical Industry Standard
Basic Technical Requirements for DC Transformers for Traction JB/T53481991
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Postal Code 100044)
Number of words XXX,XXX
Format 880×1230
Sheet X/X
Edition X, XX, 19XX
Printing X, XX, 19XX
Number of copies 1-XXX
Price XXX.XX Yuan
XX-XXX
Mechanical Industry Standard Service Network: http://www.JB.ac.cn1661_8
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