JB/T 4315-1997 This standard is a revision of JB 4315-86. This standard specifies the requirements, test methods, marking, packaging, transportation and storage of crane electronic control equipment. This standard applies to crane electrical transmission control equipment (including control panels, control cabinets, control consoles, control boxes, etc., hereinafter referred to as crane electronic control equipment) with an AC rated voltage not exceeding 1200V, a frequency of 50Hz, and a direct injection rated voltage not exceeding 1500V. The selection, installation and protection requirements of single electrical components such as circuit breakers used in cranes should also comply with the relevant provisions of this standard. Electrical appliances with 60Hz and other frequencies can also refer to the relevant technical requirements in this standard. JB/T 4315-1997 Crane electronic control equipment JB/T4315-1997 standard download decompression password: www.bzxz.net

JB/T4315-1997
This standard is a revision of JB4315-86 "Electronic Control Equipment for Cranes". This standard supplements and modifies the terms, terminology, technical requirements, test methods and other chapters of the original standard, and adds a chapter on referenced standards. This standard refers to the relevant requirements of IEC439-1 (1992 third edition) "Low-voltage complete switchgear and control equipment Part 1: Complete equipment that has passed type tests and passed partial type tests" and IEC204-1 (1992) "Industrial machinery electrical equipment Part 1: General technical conditions".
This standard was first issued in 1986, and this is the first revision. This standard will be implemented from January 1, 1998, and the original JB4315-86 standard will be invalid.
This standard was proposed and managed by Shenyang Electric Drive Research Institute. Shenyang Electric Drive Research Institute was responsible for drafting this standard. Tianshui Great Wall Control Electric Appliance Factory, Dalian Switch Factory, Suzhou Electric Control Equipment Factory, Shanghai Dongwu Electric Co., Ltd., and Nanjing Switch Factory participated in the drafting. The main drafters of this standard are Yang Xiudong, Li Guang, Yan Xiaohua, Yu Qingshun, Chen Xueqin, Zhou Zhaomin, and Li Ying. Shenyang Electric Drive Research Institute is entrusted with the interpretation of this standard. Scope
Machinery Industry Standard of the People's Republic of China
Electronic Control Equipment for Cranes
JB/T4315-1997
Replaces JB 4315-86
This standard specifies the requirements, test methods, marking, packaging, transportation and storage of electronic control equipment for cranes. This standard applies to all types of crane electrical transmission control equipment (including control panels, control cabinets, control consoles, control boxes, etc., hereinafter referred to as crane electrical control equipment) with an AC rated voltage not exceeding 1200V and a frequency of 50Hz and a DC rated voltage not exceeding 1500V. The selection, installation and protection requirements of single electrical components such as circuit breakers used in cranes should also comply with the relevant provisions of this standard. Electrical appliances with 60Hz and other frequencies can also refer to the relevant technical requirements in this standard. 2
Cited Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. The versions shown are valid at the time of publication of this standard. All standards will be revised. All parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 2681-81bzxZ.net
GB/T 2682—81
GB/T 379789
GB/T 420584
JB/T3084—82
3 Definitions
Wire colors in electrical complete sets
Colors of indicator lights and buttons in electrical complete setsElectrical control equipment
Part 2: Electrical control equipment equipped with electronic devicesStandard operating parts for controlling electrical equipmentDirection of operation (eqVIEC447:74)Product packaging and transportation regulations for electric drive control stationsThis standard adopts the following definitions:
3.1 Indoor crane electrical control equipment
Electrical control equipment used on cranes working indoors. Outdoor crane electrical control equipment
Electrical control equipment used on cranes working outdoors Sheltered places and places without weather protection 3.3
Sheltered places refer to places that can prevent the electric control equipment from being directly affected by the weather, but there may be additional influences such as wind-blown falling objects, dripping water, air pollution, etc. Places without weather protection are installation places where the electric control equipment is directly exposed to the outdoors. 3.4Structure of crane electric control equipment
The general term for various structural parts such as frames and shells on electric control equipment that install and support electrical components and conductors. 3.5Metal structure
Structure made of metal as the main material. 3.6Open structure
A structural form. The electrical components and conductors installed on the structure can be directly touched, and there is no protection against external solids and liquids. 3.7 Protective structure
For complete sets of equipment with all faces closed (except the mounting surface), the protection level should not be less than IP2X3.8 Transmission control scheme
Approved by the Ministry of Machinery Industry of the People's Republic of China on September 5, 1997 and implemented on January 1, 1998
JB/T4315-1997
A general term for the specific transmission mode, speed regulation method and control circuit adopted by an electric transmission system. 3.9 AC transmission control scheme
Refers to the transmission control scheme in which the controlled object (motor) is mainly powered by AC power. Such as AC asynchronous motor stator and rotor series resistance speed regulation scheme, stator thyristor voltage speed regulation scheme, rotor thyristor resistance speed regulation scheme, eddy current brake speed regulation scheme, dynamic brake speed regulation scheme, variable frequency speed regulation scheme, etc.
3.10 DC transmission control scheme
Refers to the transmission control scheme in which the controlled object (motor) is mainly powered by DC power. Such as DC motor armature series resistance speed control scheme, thyristor voltage control speed control scheme, weak magnetic speed control scheme, etc. 3.11 Low speed control scheme
Transmission control scheme with speed control range D≤3. 3.12 Speed ​​control range
The ratio of the synchronous speed of the motor to the speed of the motor in the first gear down under the condition of rated load. N.
Where: D——speed control range;
N. —Synchronous speed of the motor;
N.in——Rated load speed of the motor in the first gear down. 3.13 Speed ​​change rate
The ratio of the difference between the speed of the motor under light load (generally 10% of the rated load) and the speed of the rated load to the synchronous speed of the motor when the mechanism is running in the first gear down.
Where: 8—
Rate of speed change;
The first gear motor speed under light load;
Nin——The first gear motor speed under rated load 3.14 General crane electronic control equipment
All kinds of crane electronic control equipment that can work under the normal working conditions specified in this standard. 3.15 Special crane electronic control equipment
Crane electronic control equipment whose working conditions are different from the normal working conditions specified in this standard and special measures must be taken to meet the use requirements.
4 Working conditions
4.1 Normal working conditions
4.1.1 The electric control equipment of indoor general cranes shall be able to work normally under the following conditions: a) The altitude shall not exceed 2000m;
b) The ambient air temperature shall not exceed +40℃ and shall not be lower than -5℃, and the average temperature within a 24h period shall not exceed +35℃; c) The air shall be clean, and the relative humidity shall not exceed 50% at the highest temperature of +40℃, and the relative humidity may be increased at lower temperatures (for example, 90% at +20℃). Due to temperature changes, slight condensation may occur occasionally; d) The quality of the power supply network shall be qualified, and the fluctuation range of the incoming line voltage shall not exceed ±10% of the rated voltage; e) Vertical installation, with an inclination of no more than 5°; f) The installation shall be firm, and no horizontal movement or vertical jump relative to the main engine shall occur during the operation of the main engine; g) The maximum vibration conditions of the installation part shall be: 1.5mm at 5~13Hz; 1.0g at 13~150Hz. 4.1.2 The normal working conditions of outdoor general crane electronic control equipment are: 5
JB/T43151997
a) The ambient air temperature does not exceed +40℃, and is not lower than -25℃ (temperate zone) and -40℃ (cold zone), and the average temperature within a 24h period does not exceed +35℃;
b) When the maximum air temperature does not exceed +25℃, the relative humidity is allowed to temporarily reach 100%; c) Other conditions are the same as 4.1.1 a), d), e), f), g). 4.2 Special working conditions
Special working conditions include:
a) The altitude is different from that specified in 4.1; b) The ambient air temperature is different from that specified in 4.1; c) The ambient air humidity is different from that specified in 4.1. Special crane electronic control equipment should be able to work normally under the specified special working conditions. The specific data of special working conditions are specified by the corresponding product standards.
4.3 Requirements beyond the above working conditions must comply with applicable special requirements or a special agreement between the manufacturer and the user. The user should propose this to the manufacturer.
In addition to complying with the provisions of this standard, crane electronic control equipment shall also comply with the requirements of relevant clauses of other standards and be manufactured in accordance with the working drawings approved by the prescribed procedures.
5.1 Transmission control scheme for crane electronic control equipment 5.1.1 The transmission control scheme adopted by crane electronic control equipment should be a mature scheme that has been reviewed and approved. If the existing scheme cannot meet the actual needs and other schemes proposed by the user are required, the user and the manufacturer should reach a special agreement in advance or apply for supplementary scheme review. 5.1.2 The structure of the crane transmission control scheme must include the following necessary protection links; a) at least one level of short-circuit protection;
b) undervoltage protection;
c) emergency stop switch or device;
d) necessary limit protection.
The structure of the crane transmission control scheme, depending on the specific scheme selected, also needs to add the following protection links accordingly: a) controller zero position protection.
b) mechanical and electrical interlocking between the forward and reverse contactors and other contactors that will cause short-circuit accidents when closed at the same time, c) overcurrent protection set separately for the motor. Three-phase wound asynchronous motors can be equipped with overcurrent protection in two phases. The system protected by the protection box should be equipped with total overcurrent protection for the third phase of all motors. The total contactor should be disconnected when it is actuated. DC motors can be equipped with overcurrent protection in an ungrounded power line. Diesel engine-generator power supply and squirrel cage asynchronous motors can be exceptions. d) overspeed protection.
The lifting mechanism and the variable amplitude mechanism adopt the AC stator thyristor voltage and speed regulation, eddy current brake speed regulation, dynamic brake speed regulation, frequency conversion speed regulation, DC thyristor power supply speed regulation and DC unit power supply speed regulation and other transmission control schemes should be equipped with overspeed protection. The crane electronic control equipment used in other places where the consequences of overspeed are particularly serious should also have overspeed protection. e) Break and phase error protection.
f) The DC generator-motor set should be equipped with zero position anti-creep protection. g) The DC separately excited motor should be equipped with demagnetization protection. h) Other necessary protection and interlocking
5.2 Structure of crane electric control equipment
Crane electric control equipment should adopt metal structure, which should be firm and reliable, able to withstand the force under normal working condition of crane, and ensure the normal operation of various electrical components in the electric control equipment. 5.2.2 When there is an electrical equipment room on the crane, the electric control equipment in the electrical equipment room can adopt an open structure, such as a control panel; the electric control equipment of the crane outdoors or without an electrical equipment room must adopt a protective structure, such as a control cabinet and a resistor box cover. 5.2.3 Crane electric control equipment with an open structure should have appropriate protective devices, such as protective railings, protective covers, etc., to prevent users and maintenance personnel from accidentally touching the live conductors and components on the electric control equipment. 5.2.4 Outdoor crane electric control equipment: must adopt a protective structure (except when there is a closed electrical equipment room). When installed and used in places without weather protection, the enclosure protection level should not be lower than IP53. When installed and used in places with shelter, the enclosure protection level can be appropriately reduced.
When necessary, temperature control facilities should be added inside the electric control equipment of outdoor cranes. 5.2.5 The metal structure (including ferrous metal parts) should have a reliable coating layer, the outer surface should be flat, without bumps and weld penetration, the coating color should be uniform, neat and beautiful, without defects such as blistering and flow marks. When the surface treatment of metal structures and ferrous metal parts has appearance and adhesion level requirements, the manufacturer and the user can negotiate in accordance with the relevant provisions of the relevant standards.
5 The doors of the control box and cabinet should be able to be opened and closed flexibly within an angle of not less than 90°. The same group of equipment should be equipped with locks that can be opened with the same key.
5.2.7 The metal shell of the equipment must be welded with a protective grounding screw (or nut) and marked with a protective grounding symbol in a conspicuous place. The size of the grounding screw must meet the connection requirements of the protective conductor listed in Table 1. To ensure good contact during use, it is forbidden to spray the covering layer on the threads and the conductive contact surface, but anti-rust measures should be taken. If non-standard dimensions are obtained using Table 1, the wire with the closest cross-sectional area to the standard should be used. The values ​​in Table 1 are only valid when the material of the protective conductor is the same as that of the phase conductor. If the materials are different, the cross-sectional area of ​​the protective conductor should be determined to produce the same conductive effect as in Table 1. Table 1
Cross-sectional area of ​​the phase conductor of the equipment
S≤16
16
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