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NB/T 10330-2019: DC contactors for electrical vehicle
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DC contactors for electrical vehicle
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NB/T 10330-2019
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Basic data | Standard ID | NB/T 10330-2019 (NB/T10330-2019) | | Description (Translated English) | DC contactors for electrical vehicle | | Sector / Industry | Energy Industry Standard (Recommended) | | Classification of Chinese Standard | K32 | | Classification of International Standard | 29.120.20 | | Word Count Estimation | 36,319 | | Date of Issue | 2019-12-30 | | Date of Implementation | 2020-07-01 | | Issuing agency(ies) | National Energy Administration | NB/T 10330-2019: DC contactors for electrical vehicle---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
DC contactors for electrical vehicle
ICS 29.120.20
K 32
NB
Energy Industry Standards of the People's Republic of China
DC contactor for electric vehicle
2019-12-30 released
2020-07-01 implementation
Issued by National Energy Administration
Table of contents
Foreword...II
1 Scope...1
2 Normative references...1
3 Terms and definitions...2
4 Classification...2
5 Product Information...5
6 Normal use, installation and transportation conditions...6
7 Structure and performance requirements...7
8 Test...12
Appendix A (Informative Appendix) Type Test Procedure...28
Appendix B (Informative Appendix) Routine Test...30
References...31
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by China Electrical Equipment Industry Association.
This standard is under the jurisdiction of the Energy Industry Low Voltage DC Equipment and System Standardization Technical Committee (NEA/TC33).
Drafting organizations of this standard. Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd., Shanghai Electrical Apparatus Research Institute, Tyco Electronics (Shenzhen)
Co., Ltd., Shanghai Liangxin Electric Co., Ltd., Neptune Electric (Kunshan) Co., Ltd., Schugway Technology (Shanghai) Co., Ltd.,
CCIC Quality and Technology Inspection and Testing Scientific Research Institute Co., Ltd., Zhejiang Fangyuan Electrical Equipment Testing Co., Ltd., Zhejiang Chint Electric Co., Ltd.,
Suzhou Anlaiqiang Electronic Technology Co., Ltd., Shanghai Electrical Equipment Testing Institute Co., Ltd., Guizhou Tianyi Technology Co., Ltd., Dongguan Zhonghuirui
Germany Electronics Co., Ltd., Shanghai Noak Electric Co., Ltd., Shenyang Schaltbau Electric Co., Ltd., Bengbu Shuanghuan Electronics Group
Co., Ltd., Shenyang 213 Control Electric Manufacturing Co., Ltd., Zhejiang People Electric Co., Ltd., Suzhou Future Electric Co., Ltd.,
Shanghai Xiaoku Electric Co., Ltd., Zhejiang Zhongxin New Energy Technology Co., Ltd., Changsha Zhongkun Electric Technology Co., Ltd.
The main drafters of this standard. Zhang Keqiang, Li Hui, Gao Wei, Wu Peifeng, Li Yiting, Huang Qiuping, Wei Yisong, Wu Weidong, Wang Jian, Zeng
Xiangming, Zhang Yuxing, Wu Peng, Liu Shuzhang, Wang Haiyuan, Chen Long, Liu Kai, Cao Wenyu, Bao Zhizhou, Lou Mingda, Zhang Dewei, Wu Jinliang, Li
Jinping, Zheng Jiexin, Cui Tao.
DC contactor for electric vehicle
1 Scope
This standard specifies the scope, terminology, characteristics, product information, normal use and installation conditions, and results of DC contactors for electric vehicles.
Structure and performance requirements and test procedures.
This standard applies to DC contactors for electric vehicles whose main contacts are used to connect to the rated voltage of no more than 1 500 V DC.
The high-voltage electrical system plays the role of making and breaking the circuit.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version is used in this document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 2423.17-2008 Environmental testing of electric and electronic products Part 2.Test method Test Ka. Salt spray (IEC
60068-2-11.1981, IDT)
GB/T 2423.22-2012 Environmental Test Part 2.Test Method Test N. Temperature Change (IEC 60068-2-14.2009, IDT)
GB/T 2423.34-2012 Environmental testing Part 2.Test method Test Z/AD. Temperature/humidity combined cycle test (IEC
60068-2-38.2009, IDT)
GB/T 2423.56-2018 Environmental Test Part 2.Test Method Test Fh. Broadband Random Vibration Guidelines (IEC 60068-2-64.
2008, IDT)
GB/T 14048.1-2012 Low-voltage switchgear and control equipment Part 1.General (IEC 60947-1.2011, MOD)
GB/T 14048.4-2010 Low-voltage switchgear and control equipment Part 4-1.Contactors and motor starters electromechanical contactors
And motor starter (including motor protector) (IEC 60947-4-1.2009 Ed.3.0, MOD)
GB/T 14048.5-2017 Low-voltage switchgear and control equipment Part 5-1.Electromechanical control of control circuit appliances and switching elements
Circuit appliances (IEC 60947-5-1.2016, MOD)
GB/T 17626.4-2018 Electromagnetic compatibility test and measurement technology Electrical fast transient pulse group immunity test
GB/T 17626.5-2019 Electromagnetic compatibility test and measurement technology surge (impact) immunity test (IEC 61000-4-5..2014, IDT)
GB/T 18655-2018 Limits and measurement methods of radio disturbance characteristics of vehicles, ships and internal combustion engines for the protection of vehicle receivers
(IEC /CISPR 25.2016)
GB/T 19596-2017 Electric Vehicle Terminology
GB/T.19951-2019 Test method for immunity of electrical/electronic components of road vehicles to electrostatic discharge (ISO 10605.2008, MOD)
GB/T 21437 (all parts) Electrical disturbance caused by conduction and coupling of road vehicles
GB/T 33014 (all parts) Test method for immunity of electrical/electronic components of road vehicles to narrow-band radiated electromagnetic energy
GB/T 16927.1-2011 High Voltage Test Technology Part 1.General Definition and Test Requirements (IEC 60060-1.2010, MOD)
IEC 60364-7-772.2015 Low-voltage electrical installations Part 7-722.Requirements for special installations or locations-electric vehicles
IEC 60947-1.2014 Low-voltage switchgear and control equipment Part 1.General
3 Terms and definitions
The following terms and definitions defined in GB/T 14048.1-2012 and GB/T 14048.4-2010 apply to this standard.
3.1
Electric vehicle; EV
Mainly used for vehicles driven by electric motors used on public streets, highways or highways, whose driving current comes from rechargeable
Batteries or other portable energy storage devices (rechargeable, the energy used comes from outside the vehicle, such as residential areas or public power facilities).
Note. In ISO publications, "electric vehicle" is represented by "electric road vehicle".
[IEC 60364-7-772.2015,722.3.1]
3.2
Power battery system
One or more battery packs and corresponding accessories (battery management system, high-voltage circuit, low-voltage circuit, thermal management equipment and machine
(Mechanical assembly) constitutes an energy storage device that provides electrical energy for the driving of the electric vehicle.
[GB/T 19596-2017, 3.1.2.1.9]
3.3
High voltage power system
The high-voltage drive component system of electric vehicles whose internal B-level voltage is connected to the DC bus of the power battery or driven by the power battery power supply
System, including but not limited to. power battery system and/or high voltage power distribution system (high voltage relay, fuse, resistor, main switch, etc.),
Motor and its controller system, DC/DC converter and vehicle charger, etc.
[GB/T 19596-2017, 3.1.2.1.11]
3.4
The lowest value of the ambient temperature at which the DC contactor for electric vehicles can work.
3.5
Maximum operating temperature
Tmax
The highest value of ambient temperature at which DC contactors for electric vehicles can work continuously.
3.6
Critical load current
Breaking current with significantly prolonged arcing time within the range of operating conditions.
[IEC 60947-1.2014,2.5.16]
4 categories
4.1 Summary of Features
The characteristics of DC contactors for electric vehicles are specified by the following items (when applicable);
--The rated value and limit value of the main circuit (4.2);
--Control circuit (4.3);
- Auxiliary circuit (4.4);
-Coordination with short-circuit protection appliances (4.5);
-Functional status classification (4.6).
4.2 Ratings and limits of the main circuit
4.2.1 Rated voltage
4.2.1.1 Rated working voltage (Ue)
The rated working voltage is the voltage value specified by the manufacturer and the rated working current combination to determine the performance of the DC contactor.
Preferred values of rated working voltage. 150V, 250 (200) V, 450 (400) V, 750 (700) V, 1000V, 1200V, 1500V.
Note. Due to technological advancement, the rated working voltage of the DC contactor can use other voltage levels, which should match the voltage level of the high-voltage system of electric vehicles.
4.2.1.2 Rated insulation voltage (Ui)
The rated insulation voltage is the voltage value specified by the manufacturer, which is related to the dielectric test voltage and creepage distance.
Under no circumstances should the maximum rated working voltage exceed the rated insulation voltage.
4.2.1.3 Rated impulse withstand voltage (Uimp)
Under specified conditions, the DC contactor can withstand impulse voltage peaks of specified shape and polarity without breakdown. This value and electricity
The air gap is related.
4.2.2 Current
4.2.2.1 Conventional free air heating current (Ith)
4.3.2.1 in GB/T 14048.1-2012 applies.
4.2.2.2 Conventional enclosed thermal current (Ithe)
4.3.2.2 in GB/T 14048.1-2012 applies.
4.2.2.3 Rated operating current (Ie)
4.3.2.3 in GB/T 14048.1-2012 applies.
4.2.3 Normal load and overload characteristics
4.2.3.1 Rated making and breaking capacity
The rated making capacity of the DC contactor refers to the current value that can be connected well under the specified
The current value that can be broken well under certain breaking conditions shall be specified by the manufacturer.
The rated making and breaking capacity of the DC contactor shall meet the conditions of 7.2.10.1.
4.2.3.2 Conventional operating performance
The agreed operation performance of the direct contactor shall meet the conditions of 7.2.10.2.
4.2.3.3 Overload capacity
The overload making and breaking capacity of the DC contactor should meet the conditions of 7.2.10.3, and the overload current capacity should meet the conditions of 7.2.10.4.
The limited breaking capacity shall meet the conditions of 7.2.10.5.
4.2.3.4 Critical load current
The critical load current of the DC contactor should be able to meet the conditions of 7.2.10.6.
4.2.3.5 Rated limit short-circuit current
The rated limit short-circuit current of the DC contactor is under the test conditions of 8.3.3, protected with the short-circuit protection device specified by the manufacturer,
The expected short-circuit current value that can be well withstood within the operating time of the short-circuit protection appliance, which is specified by the manufacturer.
The specific requirements of the designated short-circuit protection electrical appliances shall be specified by the manufacturer, and the use of fuses for electric vehicle protection is recommended.
4.3 Control circuit
Characteristics of electrical and electronic control circuits.
--Type of current;
--Rated frequency (applicable for AC only);
--Rated control power supply voltage Us;
--The type of external control circuit appliances (contacts, sensors, optocouplers, active electronic devices, etc.);
--Power consumption.
The rated control power supply voltage and rated frequency (if applicable) determine the operation and temperature rise characteristic parameters of the control circuit.
4.4 Auxiliary circuit
The characteristics of auxiliary circuits are the number and type of contacts (a contact, b contact, etc.) in each circuit and their rated values. For rated values, see GB/T
14048.5-2017.
The characteristics of the auxiliary contact should meet the requirements of GB/T 14048.5-2017.
4.5 Coordination and cooperation with short-circuit protection devices (SCPD)
The manufacturer shall specify the type and characteristics of the SCPD used in conjunction with the DC contactor and apply to DC contact at the rated working voltage
The maximum expected short-circuit current of the device (including SCPD).
4.6 Functional status classification
4.6.1 General provisions
Describe the functional state of the DC contactor during and after the test.
4.6.2 Level A
The DC contactor can perform all its pre-designed functions during and after the test.
4.6.3 Level B
The DC contactor can perform all its pre-designed functions during and after the test. However, one or more indicators may exceed the regulations
The deviation. All functions shall automatically return to normal operation after the test. The storage function shall comply with Class A.
4.6.4 Level C
In the test, the DC contactor does not perform one or more of its pre-designed functions, but all functions can automatically return to normal after the test
run.
4.6.5 Level D
During the test, the DC contactor does not perform one or more of its pre-designed functions, and cannot automatically return to normal operation after the test.
The DC contactor needs to be reactivated by a simple operation.
4.6.6 Level E
During the test, the DC contactor does not perform one or more of its pre-designed functions, and cannot automatically return to normal operation after the test.
The DC contactor needs to be repaired or replaced.
5 Product Information
5.1 Data content
The manufacturer shall provide the following relevant information.
5.1.1 Nameplate
a) The name or trademark of the manufacturer;
b) Product model or serial number;
5.1.2 Characteristics, basic ratings
characteristic.
c) Rated working voltage;
d) Rated working current;
e) Polarity of wiring terminal (if applicable);
f) Polar impedance (Z);
Related value.
g) Overload making and breaking capacity;
h) Ability to withstand overload current;
i) Ultimate breaking capacity;
Security and installation.
j) Rated insulation voltage;
k) Rated impulse withstand voltage;
l) Enclosure protection level, for enclosed electrical appliances with enclosures;
m) Pollution degree;
n) Rated limited short-circuit current and SCPD type, current rating and characteristics;
o) The maximum allowable altitude of the installation site, such as higher than the altitude of 2 000 m;
Control circuit.
The following control circuit parameters should be marked on the coil or electrical appliance.
p) Rated control power supply voltage (Us), current nature and rated frequency;
Note 1.Other relevant information such as holding power or pull-in power can be given in the product manual and other materials.
Auxiliary circuit.
q) The rated value of the auxiliary circuit;
EMC performance.
r) Environment A or B;
i) Special requirements, such as the application of shielded wires and twisted-pair wires.
Note 2.Normal installation conditions do not use shielded wires and twisted-pair wires.
5.2 Logo
The data in 5.1.2 can be marked on the nameplate or on the product or in the manual published by the manufacturer.
The data of e) in 5.1.2 shall be marked on the product.
5.3 Instructions for installation, operation and maintenance
5.3 of GB/T 14048.1-2012 applies.
6 Normal use, installation and transportation conditions
6.1 Normal use conditions
6.1.1 Ambient air temperature
The manufacturer shall provide the highest ambient air temperature Tmax and the lowest ambient air temperature Tmin at which the DC contactor can work normally.
The recommended maximum ambient air temperature is. 70℃ or 85℃; the recommended minimum ambient air temperature is. -25℃ or -40℃.
6.1.2 Altitude
The altitude of the installation site generally does not exceed 2 000 m.
Note. When installing at a higher altitude, the dielectric strength reduction and air cooling effect should be considered. Such a DC contactor should be based on the agreement between the manufacturer and the user
It is recommended to design and use.
6.1.3 Atmospheric conditions
6.1.3.1 Humidity
The air is clean and does not contain corroding DC contactor materials or destroying insulating, conductive and explosive media.
When the temperature remains unchanged at 40°C, the relative humidity is 95% maximum.
When the temperature changes rapidly from -25℃ to 30℃, the maximum relative humidity is 95% and the maximum absolute humidity is 30 g/m3.
6.1.3.2 Pollution degree
6.1.3.2 of GB/T 14048.1-2012 applies and is supplemented as follows.
DC contactors are generally suitable for environments with pollution degree 3.However, for special purposes and internal micro-environment, other
Pollution level.
6.1.3.3 Shock and vibration
During use, the DC contactor will withstand vibrations and shocks of various frequencies and accelerations, and its requirements should meet 8.4.1 and
The specified conditions in 8.4.2.
6.2 Transport and storage conditions
If the transportation and storage conditions of the DC contactor, such as temperature and humidity, are different from those specified in 6.1, the manufacturer and user should
A special agreement was reached. Unless otherwise specified, the following temperature range applies to transportation and storage. between -40°C and 85°C.
Electrical appliances that do not operate under extreme temperatures should not be subject to irreversible damage. Under normal conditions, electrical appliances should be able to operate normally according to regulations.
Made.
More stringent transportation and storage conditions are negotiated between the manufacturer and the user.
6.3 Installation
The DC contactor should be installed and used in accordance with the manufacturer's instructions and product identification.
7 Structure and performance requirements
7.1 Structural requirements
7.1.1 Materials
7.1.1.1 General requirements
The materials used in the DC contactor should not have any adverse effects on electric vehicles under the action of abnormal heat and fire.
7.1.1.2 Glow wire test
When testing on DC contactors or components, the insulating material components used to fix the current-carrying parts should comply with GB/T 14048.1-2012
8.2.1.1.1 The glow wire test requires that the test temperature is 850°C or higher, 960°C.
Other insulating material parts shall meet the glow wire test requirements of 8.2.1.1.1 in GB/T 14048.1-2012, and the test temperature shall be 650℃.
7.1.1.3 Heat resistance
The DC contactor should have sufficient heat resistance.
Compliance with the requirements is checked by the test of 8.2.2.
7.1.2 Current-carrying parts and their connections
7.1.3 of GB/T 14048.1-2012 applies.
7.1.3 Electrical clearance and creepage distance
7.1.4 in GB/T 14048.1-2012 applies.
For inflatable products (not filled with air or compressed air), it is allowed to evaluate the insulation system according to GB/T 16927.1.
7.1.4 Terminals
7.1.8 of GB/T 14048.1-2012 applies.
7.2 Performance requirements
7.2.1 Scope of action
The DC contactor is within the range of the highest ambient air temperature Tmax and the lowest ambient air temperature Tmin declared by the manufacturer.
Any value between 85% and 110% of the voltage Us should be reliably pulled in; the limit value for the release and complete disconnection of the DC contactor is the rated control power voltage
10%~75% of Us.
The limit value of the pull-in is when the ambient air temperature is the ambient temperature declared by the manufacturer (the highest ambient air temperature Tmax), and the coil is at 100% Us
It is determined after continuous power-on reaches a stable temperature rise.
The release limit value is determined when the coil circuit resistance is at the lowest ambient air temperature Tmin.
The pull-in time and release time of the DC contactor should not be greater than the value specified by the manufacturer.
Note. If the rated control power supply voltage Us declared by the manufacturer is a range value, such as 9 V-36 V, the DC contactor should be reliably within the declared voltage range
The limit value of pull-in, release and complete disconnection is 10%~75% of Usmin.
7.2.2 Coil power consumption
The power consumption of the DC contactor coil shall be obtained through the test of 8.3.2.2.
7.2.3 Polar impedance
The pole impedance is specified by the manufacturer and is determined by measuring the voltage drop caused by the current flowing through the pole. It should be obtained by the test of 8.3.2.3
take.
7.2.4 Overvoltage
The ability of the DC contactor coil to withstand overvoltage shall be checked by the test of 8.3.2.4 to meet the requirements.
7.2.5 The supply voltage drops instantaneously
The instantaneous drop in the supply voltage of the DC contactor coil shall be checked by the test of 8.3.2.5 to see if it meets the requirements.
7.2.6 Reset performance for voltage dip
The reset performance of the DC contactor coil against voltage sags shall be checked by the test of 8.3.2.6 to meet the requirements.
7.2.7 Temperature rise
7.2.7.1 General requirements
7.2.2 of GB/T 14048.1-2012 is applicable, and the test should be carried out on a clean, new DC contactor.
Note 1.When the test voltage is lower than 100 V, the contact resistance due to oxidation may affect the temperature rise. The test is performed under 100 V
When the electrical contacts should be cleaned, it can be done by non-abrasive methods or 10 operating cycles at any voltage.
The temperature rise measured during the test under the conditions specified in 8.3.2.7 shall not exceed Table 1 in this standard and GB/T 14048.1-2012 respectively.
The limit values specified in 7.2.2.1 and 7.2.2.2.
If there is an electronic control electromagnet, it is not feasible to measure the temperature rise of the coil through the change of resistance. At this time, other types can be used.
Methods, such as thermocouples or other applicable methods.
7.2.7.2 Terminals
7.2.2.1 of GB/T 14048.1-2012 applies.
7.2.7.3 Accessible parts
7.2.2.2 of GB/T 14048.1-2012 applies.
7.2.7.4 Ambient air temperature
7.2.2.3 of GB/T 14048.1-2012 applies.
7.2.7.5 Main circuit
When testing in accordance with 8.3.2.7.4, the main circuit of the DC contactor should be able to carry the agreed free air heating current or the agreed closed generator
Thermal current, and its temperature rise does not exceed the limit value specified in 7.2.2.1 of GB/T 14048.1-2012.
7.2.7.6 Control circuit
7.2.2.5 of GB/T 14048.1-2012 applies.
7.2.7.7 Coil and solenoid winding
When the main circuit passes the maximum current specified in 7.2.7.5, the winding of the contactor coil must withstand the highest rated control under continuous load
The power supply voltage does not exceed the temperature rise limit specified in Table 1 and GB/T 14048.1-2012 7.2.2.6.
Note. According to some technical methods (such as certain types of electronic control electromagnets), when the coil is connected in normal operation, the control power supply voltage may not be straight
The connection is applied to the coil winding.
7.2.7.8 Auxiliary circuit
7.2.2.7 in GB/T 14048.1-2012 applies.
7.2.7.9 Other parts
7.2.2.8 in GB/T 14048.1-2012 is applicable and also applicable to parts made of insulating materials.
7.2.8 Current cycle test
The current cycle test of the DC contactor shall pass the test of 8.3.2.8 to check whether it meets the requirements. Measure the temperature rise of the terminal after the test,
Should not exceed the limit specified in 7.2.7.
7.2.9 Dielectric properties
7.2.3 of GB/T 14048.1-2012 is applicable, with the following modifications.
7.2.9.1 Impulse withstand voltage
The rated impulse withstand current should be equal to or higher than 4 kV.
7.2.9.2 Power frequency withstand voltage
The power frequency withstand voltage should be carried out in accordance with Table 2.
7.2.10 Performance requirements under normal load and overload conditions
7.2.10.1 Making and breaking capacity
According to the test method described in 8.3.2.10, the DC contactor should be able to switch on and off the test current and the number of operation cycles in Table 3.
The power-on time and interval time should not exceed the values specified in Table 3 and Table 4.
7.2.10.2 Conventional operating performance
7.2.4.2 of GB/T 14048.1-2012 applies, and the following requirements are added.
According to the test method described in 8.3.2.11, the DC contactor should be able to switch on and off the test current and the number of operation cycles in Table 5.
7.2.10.3 Overload making and breaking capacity
According to the test method described in 8.3.2.12, the DC contactor should be able to switch on and off the overload current and the number of operation cycles in Table 6.
7.2.10.4 Ability to withstand overload current
The DC contactor should be able to withstand an overload current of 8Ie for 10 s.
The DC contactor shall be verified for its ability to withstand overload current according to 8.3.2.13.
Note. The withstand overload current multiple and withstand time can also be increased, which can be agreed between the user and the manufacturer, but the I2t value should not be less than the specified value.
7.2.10.5 Ultimate breaking capacity
The limit breaking capacity of the D...
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